Instruction Manual
Issued: 7-15-2024
hoshizakiamerica.com
Low-Profile Modular Crescent Cuber
Models
KM D-355MAJ, MWJ
KMD-505MAJ, MWJ, MRJZ
KMD-705MAJ, MWJ, MRJZ
2
WARNING
Only qualied service technicians should install and service the appliance. To
obtain the name and phone number of your local Hoshizaki Certied Service
Representative, visit www.hoshizakiamerica.com. No installation or service should
be undertaken until the technician has thoroughly read this Instruction Manual.
Likewise, the owner/manager should not proceed to operate the appliance until the
installer has instructed them on its proper operation. Failure to install, operate, and
maintain the appliance in accordance with this manual will adversely affect safety,
performance, component life, and warranty coverage and may result in costly water
damage. Proper installation is the responsibility of the installer. Product failure or
property damage due to improper installation is not covered under warranty.
Hoshizaki provides this manual primarily to assist qualied service technicians in the
installation, maintenance, and service of the appliance.
Should the reader have any questions or concerns which have not been satisfactorily
addressed, please call, send an e-mail message, or write to the Hoshizaki Technical
Support Department for assistance.
Phone: 1-800-233-1940; (770) 487-2331
Fax: 1-800-843-1056; (770) 487-3360
E-mail: techsuppor[email protected]
618 Highway 74 South
Peachtree City, GA 30269
Attn: Hoshizaki Technical Support Department
NOTE: To expedite assistance, all correspondence/communication MUST include the
following information:
• Model Number
• Serial Number
• Complete and detailed explanation of the problem.
3
CONTENTS
Important Safety Information ................................................................................................. 4
I. Specications ...................................................................................................................... 6
A. Electrical and Refrigerant Data ..................................................................................... 6
1. KMD-355M_J ........................................................................................................... 6
2. KMD-505M_J(Z) ...................................................................................................... 6
3. KMD-705M_J(Z) ...................................................................................................... 7
B. Dimensions/Connections .............................................................................................. 8
1. Air-Cooled Models (MAJ) ......................................................................................... 8
2. Water-Cooled Models (MWJ) ................................................................................... 9
3. Remote Models (MRJZ)......................................................................................... 10
4. Remote Condenser Unit URC-5FZ (use with KMD-505MRJZ) ..............................11
5. Remote Condenser Unit URC-9FZ (use with KMD-705MRJZ) ............................. 12
II. Installation and Operating Instructions ............................................................................ 13
A. Location ...................................................................................................................... 13
B. Checks Before Installation ........................................................................................... 14
C. How to Remove Panels ............................................................................................... 15
D. Setup ........................................................................................................................... 16
E. Electrical Connection .................................................................................................. 17
F. Water Supply and Drain Connections .......................................................................... 18
1. Icemaker ................................................................................................................ 19
2. Water-Cooled Condenser....................................................................................... 20
G. Installation of Remote Condenser Unit ....................................................................... 24
1. Location ................................................................................................................. 24
2. Checks Before Installation ..................................................................................... 25
3. Setup ..................................................................................................................... 25
4. Line Set Size and Refrigerant Charge ................................................................... 26
5. Line Set Installation ............................................................................................... 27
6. Electrical Connection ............................................................................................. 34
7. Stacking Remote Condenser Unit .......................................................................... 35
H. Final Checklist ............................................................................................................. 36
1. Pre-Startup ............................................................................................................. 36
2. Post-Startup ........................................................................................................... 37
I. Startup .......................................................................................................................... 38
1. Bin Control Setting ................................................................................................. 38
2. Appliance Startup and Bin Control Check ............................................................. 41
III. Maintenance ................................................................................................................... 44
A. Maintenance Schedule ................................................................................................ 44
B. Cleaning and Sanitizing Instructions ........................................................................... 45
IV. Preparing the Appliance for Periods of Non-Use ............................................................ 47
V. Disposal ........................................................................................................................... 49
IMPORTANT
This manual should be read carefully before the appliance is installed and operated.
Read the warnings and guidelines contained in this manual carefully as they
provide essential information for the continued safe use and maintenance of the
appliance. Retain this manual for any further reference that may be necessary.
4
Important Safety Information
Throughout this manual, notices appear to bring your attention to situations which could
result in death, serious injury, damage to the appliance, or damage to property.
WARNING Indicates a hazardous situation which could result in death or
serious injury.
NOTICE Indicates a situation which could result in damage to the
appliance or property.
IMPORTANT Indicates important information about the installation, use, and
care of the appliance.
WARNING
The appliance should be destined only to the use for which it has been expressly
conceived. Any other use should be considered improper and therefore dangerous.
The manufacturer cannot be held responsible for injury or damage resulting
from improper, incorrect, and unreasonable use. Failure to install, operate, and
maintain the appliance in accordance with this manual will adversely affect safety,
performance, component life, and warranty coverage and may result in costly water
damage.
To reduce the risk of death, electric shock, serious injury, or re, follow basic
precautions including the following:
• Only qualied service technicians should install and service the appliance.
• The appliance must be installed in accordance with applicable national, state, and
local codes and regulations.
• Electrical connection must be hard-wired and must meet national, state, and local
electrical code requirements. Failure to meet these code requirements could result
in death, electric shock, serious injury, re, or damage.
• The icemaker requires an independent power supply of proper capacity. See the
nameplate for electrical specications. Failure to use an independent power supply
of proper capacity can result in a tripped breaker, blown fuse, damage to existing
wiring, or component failure. This could lead to heat generation or re.
• THE ICEMAKER MUST BE GROUNDED. Failure to properly ground the icemaker
could result in death or serious injury.
• To reduce the risk of electric shock, do not touch the control switch or service switch
with damp hands.
• Move the control switch to the "OFF" position and turn off the power supply before
servicing. Lockout/Tagout to prevent the power supply from being turned back on
inadvertently.
• Do not make any alterations to the appliance. Alterations could result in electric
shock, serious injury, re, or damage.
• The appliance is not intended for use by persons (including children) with reduced
physical, sensory, or mental capabilities, or lack of experience and knowledge,
unless they have been given supervision or instruction concerning use of the
appliance by a person responsible for their safety.
5
WARNING, continued
• Children should be properly supervised around the appliance.
• Do not climb, stand, or hang on the appliance or allow children or animals to do so.
Serious injury could occur or the appliance could be damaged.
• Do not use combustible spray or place volatile or ammable substances near the
appliance. They might catch re.
• Keep the area around the appliance clean. Dirt, dust, or insects in the appliance
could cause harm to individuals or damage to the appliance.
Additional Warning for Remote Models
• THE REMOTE CONDENSER UNIT MUST BE GROUNDED. The power supply and
ground connection to the remote condenser unit are supplied from the icemaker.
Failure to properly ground the remote condenser unit could result in death or
serious injury.
• Wire routing (conduit) and disconnect (if required) must meet national, state, and
local electrical code requirements. Failure to meet these code requirements could
result in death, electric shock, serious injury, re, or damage.
NOTICE
• Follow the water supply, drain connection, and maintenance instructions carefully to
reduce the risk of costly water damage.
• In areas where water damage is a concern, install in a contained area with a oor
drain.
• Install the icemaker in a location that stays above freezing. Normal operating
ambient temperature must be within 45°F to 100°F (7°C to 38°C).
• Level the ice dispenser/ice storage bin prior to installing the icemaker. After
icemaker installation, comrm the icemaker is level. An out-of-level icemaker could
result in improper operation, poor performance, and/or damage to the icemaker.
• Do not leave the icemaker on during extended periods of non-use, extended
absences, or in sub-freezing temperatures. To properly prepare the icemaker for
these occasions, follow the instructions in "IV. Preparing the Appliance for Periods
of Non-Use."
• Do not place objects on top of the appliance.
• The dispenser unit/ice storage bin is for ice use only. Do not store anything else in
the dispenser unit/ice storage bin.
6
I. Specications
A. Electrical and Refrigerant Data
The rating label and nameplate provide electrical and refrigerant data. The rating label
can be seen by removing the front panel. The nameplate is located on the rear panel. For
certication marks, see the nameplate.
We reserve the right to make changes in specications and design without prior notice.
1. KMD-355M_J
Model Number KMD-355MAJ KMD-355MWJ
AC Supply Voltage 115/60/1 115/60/1
Compressor 115V 8.4RLA 50LRA 115V 7.0RLA 50LRA
Pump 115V 0.46RLA 49W 115V 0.46RLA 49W
Fan 115V 1.0FLA 1/15HP --- --- ---
Other 115V 0.15A 115V 0.15A
Maximum Fuse Size 15 AMPS 15 AMPS
Max. HACR Breaker
(USA Only)
15 AMPS 15 AMPS
Max. Circuit Breaker
(Canada Only)
15 AMPS 15 AMPS
Minimum Circuit
Ampacity
15 AMPS 15 AMPS
Design Pressure HI-467PSI LO-250PSI HI-427PSI LO-250PSI
Refrigerant 404A 1 LB. 9.6 OZ. 404A 15.0 OZ.
2. KMD-505M_J(Z)
Model Number KMD-505MAJ KMD-505MWJ KMD-505MRJZ
AC Supply Voltage 115/60/1 115/60/1 115/60/1
Compressor 115V 9.6RLA 54.5LRA 115V 10.9RLA 70LRA 115V 12.0RLA 70LRA
Pump 115V 0.46RLA 49W 115V 0.46RLA 49W 115V 0.46RLA 49W
Fan 115V 1.0FLA 1/15HP --- --- --- 115V 3A MAX (Fan in URC)
Other 115V 0.15A 115V 0.15A 115V 0.15A
Maximum Fuse Size 20 AMPS 20 AMPS 20 AMPS
Max. HACR Breaker
(USA Only)
20 AMPS 20 AMPS 20 AMPS
Max. Circuit Breaker
(Canada Only)
20 AMPS 20 AMPS 20 AMPS
Minimum Circuit
Ampacity
20 AMPS 20 AMPS 20 AMPS
Design Pressure HI-467PSI LO-250PSI HI-427PSI LO-250PSI HI-467PSI LO-250PSI
Refrigerant 404A 1 LB. 8.7 OZ. 404A 15.9 OZ. 404A
Total Refrigerant Charge with
Hoshizaki Remote Condenser
Unit URC-5FZ: 4 LB. 11.8 OZ.
7
3. KMD-705M_J(Z)
Model Number KMD-705MAJ KMD-705MWJ KMD-705MRJZ
AC Supply Voltage 115/60/1 115/60/1 115/60/1
Compressor 115V 13.5RLA 93LRA 115V 12.1RLA 93LRA 115V 12.8RLA 93LRA
Pump 115V 0.46RLA 49W 115V 0.46RLA 49W 115V 0.46RLA 49W
Fan 115V 1.0FLA 1/15HP --- --- --- 115V 3A MAX (Fan in URC)
Other 115V 0.15A 115V 0.15A 115V 0.15A
Maximum Fuse Size 20 AMPS 20 AMPS 20 AMPS
Max. HACR Breaker
(USA Only)
20 AMPS 20 AMPS 20 AMPS
Max. Circuit Breaker
(Canada Only)
20 AMPS 20 AMPS 20 AMPS
Minimum Circuit
Ampacity
20 AMPS 20 AMPS 20 AMPS
Design Pressure HI-467PSI LO-250PSI HI-427PSI LO-250PSI HI-467PSI LO-250PSI
Refrigerant 404A 2 LB. 12.1 OZ. 404A 1 LB. 11.3 OZ. 404A
Total Refrigerant Charge with
Hoshizaki Remote Condenser
Unit URC-9FZ: 10 LB. 11.1 OZ.
8
NOTICE
• Allow 6" (15 cm) clearance at rear,
sides, and top for proper air circulation
and ease of maintenance and/or
service should they be required.
• The ice storage bin opening must
match the bottom opening as in the
illustration.
B. Dimensions/Connections
1. Air-Cooled Models (MAJ)
Units: mm [in.]
Rear
Side
Bottom
Model Shown: KMD-505MAJ
KMD-355MAJ
KMD-505MAJ
KMD-705MAJ
A 559 [22] 659 [26]
B 540 [21-1/4] 639 [25-1/8]
C 538 [21-1/8] 637 [25-1/8]
Model Shown: KMD-505MAJ
Model Shown: KMD-505MAJ
9
2. Water-Cooled Models (MWJ)
Units: mm [in.]
NOTICE
• Allow 6" (15 cm) clearance at rear,
sides, and top for proper air circulation
and ease of maintenance and/or
service should they be required.
• The ice storage bin opening must
match the bottom opening as in the
illustration.
KMD-355MWJ
KMD-505MWJ
KMD-705MWJ
A 559 [22] 659 [26]
B 540 [21-1/4] 639 [25-1/8]
C 538 [21-1/8] 637 [25]
D 435 [17-1/8] 488 [19-1/4]
E 64 [2-1/2] 60 [2-3/8]
F 66 [2-5/8] 150 [6]
Rear
KMD-355/505MWJ
Side
Bottom
Model Shown: KMD-505MWJ
Model Shown: KMD-505MWJ
Model Shown: KMD-505MWJ
Model Shown: KMD-705MWJ
Rear
KMD-705MWJ
10
3. Remote Models (MRJZ)
NOTICE
• Allow 6" (15 cm) clearance at rear,
sides, and top for proper air circulation
and ease of maintenance and/or
service should they be required.
• The ice storage bin opening must
match the bottom opening as in the
illustration.
Rear
Side
Bottom
Model Shown: KMD-505MRJZ
Model Shown: KMD-505MRJZ
Model Shown: KMD-505MRJZ
Units: mm [in.]
KMD-505MRJZ KMD-705MRJZ
A 559 [22] 659 [26]
B 510 [20-1/8] 609 [24]
C 538 [21-1/8] 639 [25-1/8]
D 409 [16-1/8] 480 [18-7/8]
E 49 [1-7/8] 46 [1-3/4]
F 84 [3-1/4] 87 [3-1/2]
G 30 [1-1/8] 30 [1-1/8]
11
Units: mm [in.]
Top
Icemaker Model
URC-5FZ Heat of Rejection
AT 90°F (32°C)
WT 70°F (21°C)
KMD-505MRJZ 7,900 BTU/hr
NOTICE
Allow 24" (61-cm) clearance at front
and rear for proper air circulation and
ease of maintenance and/or service
should they be required.
4. Remote Condenser Unit URC-5FZ (use with KMD-505MRJZ)
Rear
12
Units: mm [in.]
5. Remote Condenser Unit URC-9FZ (use with KMD-705MRJZ)
Icemaker Model
URC-9FZ Heat of Rejection
AT 90°F (32°C)
WT 70°F (21°C)
KMD-705MRJZ 9,500 BTU/hr
NOTICE
Allow 24" (61cm) clearance at front
and rear for proper air circulation and
ease of maintenance and/or service
should they be required.
Rear
Top
13
II. Installation and Operating Instructions
WARNING
• The appliance must be installed in accordance with applicable national, state, and
local codes and regulations.
• Failure to install, operate, and maintain the appliance in accordance with this
manual will adversely affect safety, performance, component life, and warranty
coverage and may result in costly water damage.
• CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews
are securely in place after installation. Make sure that none have fallen into the
dispenser unit/ice storage bin.
A. Location
NOTICE
• The icemaker is not intended for outdoor use. Normal operating ambient
temperature must be within 45°F to 100°F (7°C to 38°C); Normal operating
water temperature must be within 45°F to 90°F (7°C to 32°C). Operation of the
icemaker, for extended periods, outside of these normal temperature ranges may
affect icemaker performance.
• The icemaker will not work at sub-freezing temperatures. To prevent damage
to the water supply line, drain the icemaker if the air temperature is going to go
below 32°F (0°C). See "IV. Preparing the Appliance for Periods of Non-Use."
• Install the appliance in a location that is at. The ice storage bin has adjustable
legs, adjust to level as needed. Be sure the appliance is properly leveled to avoid
improper operation, faulty system performance, and possible appliance damage.
• The icemaker should not be located next to ovens, grills, or other high heat producing
equipment.
• Allow 6" (15 cm) clearance at rear, sides, and top for proper air circulation and ease of
maintenance and/or service should they be required.
14
B. Checks Before Installation
• Visually inspect the exterior of the shipping container and immediately report any
damage to the carrier. Upon opening the container, any concealed damage should also
be immediately reported to the carrier.
• Remove the shipping carton, tape, and packing material. If any are left in the appliance,
it will not work properly.
• See the nameplate on the rear panel, and check that your voltage supplied corresponds
with the voltage specied on the nameplate.
• Remove the panels to prevent damage when installing the appliance. See "II.C. How to
Remove Panels."
• Remove the package containing the accessories.
• Remove the protective plastic lm from the panels. If the appliance is exposed to the
sun or to heat, remove the lm after the appliance cools.
• Check that the refrigerant lines do not rub or touch lines or other surfaces, and that the
fan blade (if applicable) turns freely.
• Check that the compressor is snug on all mounting pads.
• The icemaker can be installed on a dispenser unit or ice storage bin. The ice storage
bins listed below are recommended.
Model Number Bin Width Recommended Hoshizaki Ice Storage Bin
KMD-355M_J
KMD-505M_J(Z)
KMD-705M_J(Z)
30" or Wider B-500 or
BD-500 Series
For further options, contact your local Hoshizaki distributor.
• NOTICE! Remote model must be connected to an appropriate remote condenser
unit. The remote condenser unit listed below is recommended. Connection to a
different remote condenser unit will void the warranty unless Hoshizaki approves
a different remote condenser unit for your specic application. For further
details, contact your local Hoshizaki distributor.
Model Number Recommended Hoshizaki Remote Condenser Unit
KMD-505MRJZ URC-5FZ
KMD-705MRJZ URC-9FZ
15
Fig. 1
Top Panel
Front Insulation Panel
Front Panel
Screw
Screw
Right Side Panel
Top Insulation Panel
C. How to Remove Panels
See Fig. 1
• Front Panel: Remove the screw. Lift up and towards you.
• Top Panel: Lift up at front slightly, push rearward, then lift off.
• Right Side Panel: Remove the screw. Slide outward to the right slightly, then push
rearward and remove.
• Top Insulation Panel: Pull forward slightly, then lift off.
• Front Insulation Panel: From the top, pull forward slightly, then lift off.
Side Frame
16
Fig. 2a Fig. 2b
D. Setup
Dispenser Unit/Ice Storage Bin and Icemaker Setup
WARNING
The installer must ensure the dispenser unit/ice storage bin is compatible with
the icemaker, and the dispenser unit/ice storage bin and icemaker are properly
attached and secured.
1) If mounting the icemaker on top of a dispenser unit, follow the dispenser unit's setup
procedure. If mounting the icemaker on top of an ice storage bin, unpack the ice storage
bin and attach the 4 adjustable legs provided (bin accessory) to the bottom of the ice
storage bin.
2) Position the dispenser unit/ice storage bin in its permanent location.
3) If required, install an adapter kit or top kit. Contact your local Hoshizaki distributor for
recommendations.
4) Level the dispenser unit/ice storage bin in both the left-to-right and front-to-rear
directions. Adjust the ice dispenser/ice storage bin legs to level. NOTICE! The
appliance must be level. Not properly leveling the appliance could result in
improper operation, appliance performance, and appliance damage.
5) Place the icemaker on top of the dispenser unit/ice storage bin. NOTICE! Do not use
the side frame to lift the icemaker. See Fig.1. Lift the icemaker from the base.
6) Conrm the installation is level. NOTICE! The dispenser unit/ice storage bin must
be level. Failure to level the equipment could result in improper operation, poor
performance, and/or equipment damage.
7a) Dispenser Unit: Follow the dispenser unit, adapter kit, or top kit instructions for
securing the icemaker. If no instructions are available, secure the icemaker using the
mounting brackets provided. Rotate the mounting brackets so that they t ush to the
dispenser unit. SeeFig.2a. Secure the mounting brackets to the icemaker with the bolts
provided. Secure the mounting brackets to the dispenser unit with self-tapping screws
(not provided). NOTICE! Use care to avoid damage to dispenser unit components
when attaching the mounting brackets.
7b) Ice Storage Bin: Follow the ice storage bin, adapter kit, or top kit instructions for
securing the icemaker. If no instructions are available, secure the icemaker using the
2mounting brackets and the bolts provided. See Fig.2b.
Dispenser Unit Application Ice Storage Bin Application
17
E. Electrical Connection
WARNING
For All Models
• Electrical connection must be hard-wired and must meet national, state, and local
electrical code requirements. Failure to meet these code requirements could result
in death, electric shock, serious injury, re, or damage.
• The icemaker requires an independent power supply of proper capacity. See
the nameplate for electrical specications. Failure to use an independent power
supply of proper capacity can result in a tripped breaker, blown fuse, damage to
existing wiring, or component failure. This could lead to heat generation or re.
• THE ICEMAKER MUST BE GROUNDED. Failure to properly ground the icemaker
could result in death or serious injury.
• Electrical connection must be made in accordance with the instructions on the
"WARNING" tag, provided with the pig tail leads in the junction box. See Fig. 3.
Additional Warnings for Remote Models
• THE REMOTE CONDENSER UNIT MUST BE GROUNDED. Power supply and
ground wire to the remote condenser unit are supplied from the icemaker. See
"II.G.6. Electrical Connection." Failure to properly ground the remote condenser
unit could result in death or serious injury.
• To reduce the risk of electric shock, make all remote condenser unit connections
before connecting the icemaker power supply.
NOTICE
On remote models, the appliance must have power for a minimum of 4hours prior
to startup to prevent compressor damage.
• Usually an electrical permit and services of a licensed
electrician are required.
• The maximum allowable voltage variation is ±10 percent
of the nameplate rating.
• The white lead must be connected to the neutral
conductor of the power source. NOTICE! Miswiring
may result in severe damage to the icemaker.
• The opening for the power supply connection is
7/8" DIA. to t a 1/2" trade size conduit.
KMD-355M_J
KMD-505M_J(Z)
KMD-705M_J(Z)
115/60/1
WARNING
ELECTRICAL CONNECTION
THIS UNIT MUST BE GROUNDED
Failure to properly ground or wire
this unit could result in death,
serious injury, or severe damage
to the icemaker. The white lead
must be connected to the neutral
conductor of the power source.
See diagram below.
4Axxxx-010Based on 435005
JUNCTION BOX
1
15-120V
Black
WHITE
L
N
Fig. 3
18
F. Water Supply and Drain Connections
See Figs. 4 through 8
WARNING
Water supply and drain connections must be installed in accordance with applicable
national, state, and local regulations.
NOTICE
• Normal operating water temperature should be within 45°F to 90°F (7°C to
32°C). Operation of the appliance, for extended periods, outside of this normal
temperature range may affect appliance performance.
• Water supply pressure must be a minimum of 10 PSIG and a maximum of
113PSIG. If the pressure exceeds 113 PSIG, the use of a pressure reducing valve
is required.
• To prevent damage to the appliance, do not operate the appliance when the water
supply is off, or if the pressure is below 10 PSIG. Do not run the appliance until
the proper water pressure is reached.
• External lters, strainers, or softeners may be required depending on water quality.
Contact your local Hoshizaki Certied Service Representative or local Hoshizaki
distributor for recommendations.
• A plumbing permit and services of a licensed plumber may be required in some areas.
• The icemaker drain line, dispenser unit/ice storage bin drain line, and water-cooled
condenser drain line (if applicable) must be run separately.
• Drain lines must have 1/4" fall per foot (2 cm per 1 m) on horizontal runs to provide a
proper drain ow. A vented tee connection is also required for proper ow.
• Drain lines should not be piped directly to the sewer system. An air gap of a minimum of
2vertical inches (5 cm) should be between the end of the drain pipes from the icemaker,
dispenser unit/ice storage bin, and water-cooled condenser (if applicable) and the oor
drain.
19
1. Icemaker
Icemaker Water
Supply Inlet
Minimum Icemaker
Water Supply Line Size
Icemaker Drain
Outlet
Minimum Icemaker
Drain Line Size
1/2" Female Pipe
Thread (FPT)
1/4" Nominal ID
Copper Water Tubing or
Equivalent
3/4" Female Pipe
Thread (FPT)
3/4" Nominal
ID Hard Pipe or
Equivalent
• An icemaker water supply line shut-off valve and drain valve must be installed.
• Be sure there is sufficient extra water supply line and drain line for the appliance to be
pulled out for service.
Fig. 4
Model Shown:
KMD-505MRJZ
Air-Cooled and Remote Models
Remote Condenser
Line Set Connections
(Remote Model)
Shut-Off Valve
Drain Valve
Icemaker
Icemaker Water
Supply Inlet
1/2" FPT
Bin Drain Outlet
3/4" FPT
2-inch (5-cm) air gap
Floor
Drain
Icemaker
Drain Outlet
3/4" FPT
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Vent Tube
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Ice
Storage
Bin
Separate piping to approved
drain. Leave a 2-inch (5-cm)
vertical air gap between the
end of each pipe and the
drain.
Be sure there is sufficient
extra water supply line and
drain line for the appliance
to be pulled out for service.
20
2. Water-Cooled Condenser
a) KMD-355/505MWJ
(1) Connection to an Open Drain System
Condenser Water
Supply Inlet
Minimum Condenser
Water Supply Line Size
Condenser Drain
Outlet
Minimum Condenser
Drain Line Size
1/2" Female Pipe
Thread (FPT)
1/4" Nominal ID Copper
Water Tubing or Equivalent
3/8" Female Pipe
Thread (FPT)
1/4" Nominal ID Hard Pipe
or Equivalent
• A condenser water supply line shut-off valve and drain valve must be installed.
• In some areas, a back ow preventer may be required in the cooling water circuit.
• In order to maintain the proper high side pressure, the condenser water supply inlet
temperature should not drop below 45°F (7°C) and the condenser drain outlet temperature
must be in the 104°F to 115°F (40°C to 46°C) range. Once the icemaker installation
is complete, conrm the condenser drain outlet temperature 5 minutes after a freeze
cycle starts. If the condenser drain outlet temperature is not in the proper range, use a
at blade screwdriver to rotate the adjustment screw on the water-regulating valve until
the temperature is in the proper range (rotate counterclockwise to raise temperature or
clockwise to lower temperature).
Fig. 5
Water-Cooled Models
Connection to an Open Drain System
Model Shown:
KMD-505MWJ
Icemaker
Icemaker Water
Supply Inlet
1/2" FPT
Bin Drain Outlet
3/4" FPT
2-inch (5-cm) air gap
Floor
Drain
Icemaker
Drain Outlet
3/4" FPT
Vent Tube
Vent Tube
Minimum 1/4"
Nominal ID
Hard Pipe or
Equivalent
Condenser Water
Supply Inlet
1/2" FPT
Condenser
Drain Outlet
3/8" FPT
Shut-Off Valve
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Drain Valve
Ice
Storage
Bin
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Separate piping to approved
drain. Leave a 2-inch (5-cm)
vertical air gap between the
end of each pipe and the
drain.
Be sure there is sufficient
extra water supply line and
drain line for the appliance
to be pulled out for service.
21
(2) Connection to a Closed Loop System
Condenser Water
Supply Inlet
Minimum Condenser
Water Supply Line Size
Condenser
Return Outlet
Minimum Condenser
Return Line Size
1/2" Female Pipe
Thread (FPT)
1/4" Nominal ID Copper
Water Tubing or Equivalent
3/8" Female Pipe
Thread (FPT)
1/4" Nominal ID Copper
Water Tubing or Equivalent
• Shut-off valves and drain valves must be installed at both the condenser water supply inlet
and condenser return outlet.
• Minimum water ow to the condenser is 4 GPM.
• The pressure differential between the condenser water supply inlet and condenser return
outlet must be no less than 10 PSIG.
• When using a glycol blend, the solution mixture should be less than 30% glycol.
• In order to maintain the proper high side pressure, the condenser water supply inlet
temperature should not drop below 45°F (7°C) and the condenser return outlet
temperature must be in the 104°F to 115°F (40°C to 46°C) range. Once the icemaker
installation is complete, conrm the condenser return outlet temperature 5 minutes after a
freeze cycle starts. If the condenser return outlet temperature is not in the proper range,
use a at blade screwdriver to rotate the adjustment screw on the water-regulating valve
until the temperature is in the proper range (rotate counterclockwise to raise temperature
or clockwise to lower temperature).
Fig. 6
Water-Cooled Models
Connection to a Closed Loop System
Model Shown:
KMD-505MWJ
Icemaker
Icemaker Water
Supply Inlet
1/2" FPT
Bin Drain Outlet
3/4" FPT
2-inch (5-cm) air gap
Floor
Drain
Icemaker
Drain Outlet
3/4" FPT
Vent Tube
Vent Tube
Condenser Water
Supply Inlet
1/2" FPT
Condenser
Return Outlet
3/8" FPT
Shut-Off Valve
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Drain Valve
Ice
Storage
Bin
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Separate piping to approved
drain. Leave a 2-inch (5-cm)
vertical air gap between the
end of each pipe and the
drain.
Be sure there is sufficient
extra water supply line and
drain line for the appliance
to be pulled out for service.
22
b) KMD-705MWJ
(1) Connection to an Open Drain System
Condenser Water
Supply Inlet
Minimum Condenser
Water Supply Line Size
Condenser Drain
Outlet
Minimum Condenser
Drain Line Size
1/2" Female Pipe
Thread (FPT)
1/4" Nominal ID Copper
Water Tubing or Equivalent
3/8" Female Pipe
Thread (FPT)
1/4" Nominal ID Hard Pipe
or Equivalent
• A condenser water supply line shut-off valve and drain valve must be installed.
• In some areas, a back ow preventer may be required in the cooling water circuit.
• In order to maintain the proper high side pressure, the condenser water supply inlet
temperature should not drop below 45°F (7°C) and the condenser drain outlet temperature
must be in the 104°F to 115°F (40°C to 46°C) range. Once the icemaker installation
is complete, conrm the condenser drain outlet temperature 5 minutes after a freeze
cycle starts. If the condenser drain outlet temperature is not in the proper range, use a
at blade screwdriver to rotate the adjustment screw on the water-regulating valve until
the temperature is in the proper range (rotate counterclockwise to raise temperature or
clockwise to lower temperature).
Fig. 7
Water-Cooled Models
Connection to an Open Drain System
Model Shown:
KMD-705MWJ
Icemaker
Icemaker Water
Supply Inlet
1/2" FPT
Bin Drain Outlet
3/4" FPT
2-inch (5-cm) air gap
Floor
Drain
Icemaker
Drain Outlet
3/4" FPT
Vent Tube
Vent Tube
Minimum 1/4"
Nominal ID
Hard Pipe or
Equivalent
Condenser Water
Supply Inlet
1/2" FPT
Condenser
Drain Outlet
3/8" FPT
Shut-Off Valve
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Drain Valve
Ice
Storage
Bin
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Separate piping to approved
drain. Leave a 2-inch (5-cm)
vertical air gap between the
end of each pipe and the
drain.
Be sure there is sufficient
extra water supply line and
drain line for the appliance
to be pulled out for service.
23
(2) Connection to a Closed Loop System
Condenser Water
Supply Inlet
Minimum Condenser
Water Supply Line Size
Condenser
Return Outlet
Minimum Condenser
Return Line Size
1/2" Female Pipe
Thread (FPT)
1/4" Nominal ID Copper
Water Tubing or Equivalent
3/8" Female Pipe
Thread (FPT)
1/4" Nominal ID Copper
Water Tubing or Equivalent
• Shut-off valves and drain valves must be installed at both the condenser water supply inlet
and condenser return outlet.
• Minimum water ow to the condenser is 4 GPM.
• The pressure differential between the condenser water supply inlet and condenser return
outlet must be no less than 10 PSIG.
• When using a glycol blend, the solution mixture should be less than 30% glycol.
• In order to maintain the proper high side pressure, the condenser water supply inlet
temperature should not drop below 45°F (7°C) and the condenser return outlet
temperature must be in the 104°F to 115°F (40°C to 46°C) range. Once the icemaker
installation is complete, conrm the condenser return outlet temperature 5 minutes after a
freeze cycle starts. If the condenser return outlet temperature is not in the proper range,
use a at blade screwdriver to rotate the adjustment screw on the water-regulating valve
until the temperature is in the proper range (rotate counterclockwise to raise temperature
or clockwise to lower temperature).
Fig.8
Water-Cooled Models
Connection to a Closed Loop System
Model Shown:
KMD-705MWJ
Icemaker
Icemaker Water
Supply Inlet
1/2" FPT
Bin Drain Outlet
3/4" FPT
2-inch (5-cm) air gap
Floor
Drain
Icemaker
Drain Outlet
3/4" FPT
Vent Tube
Vent Tube
Condenser Water
Supply Inlet
1/2" FPT
Condenser
Return Outlet
3/8" FPT
Shut-Off Valve
Minimum 1/4" Nominal ID Copper
Water Tubing or Equivalent
Drain Valve
Ice
Storage
Bin
Minimum 3/4" Nominal ID
Hard Pipe or Equivalent
Separate piping to approved
drain. Leave a 2-inch (5-cm)
vertical air gap between the
end of each pipe and the
drain.
Be sure there is sufficient
extra water supply line and
drain line for the appliance
to be pulled out for service.
24
G. Installation of Remote Condenser Unit
WARNING
• Installation of remote condenser unit must be performed by properly trained and
EPA-certied service personnel.
• The remote condenser unit must be installed in accordance with applicable
national, state, and local codes and regulations.
• Failure to install the remote condenser unit within these guidelines may adversely
affect safety, performance, component life, and warranty coverage.
• Power supply and ground wire to the remote condenser unit are supplied from the
icemaker. For details, see section "II.G.6. Electrical Connection."
1. Location
NOTICE
• The remote condenser unit is intended for outdoor use. Normal operating ambient
temperature should be within -20°F to +122°F (-29°C to +50°C). Operation of the
remote condenser unit, for extended periods, outside of this normal temperature
range may affect icemaker performance.
• The maximum line length for the standard line sizes and refrigerant charge is
66feet (20 m). With larger line sizes and/or additional refrigerant, the maximum
line length is 100 feet (30.5 m). For details, see "II.G.4 Line Set Size and
Refrigerant Charge."
• The maximum vertical distance between the remote condenser unit and the
icemaker is 33 feet (10 m) above or 10 feet (3 m) below the icemaker. These
distances are measured tting to tting. See Fig. 9.
The remote condenser unit must be positioned in a permanent site under the following
guidelines:
• A rm and at site.
• A dry and well ventilated area with 24" (61cm) clearance at front and rear for proper air
circulation and ease of maintenance and/or service should they be required. See Fig. 10.
Min. 24" (61 cm) Clearance
Air Air
Icemaker
Remote
Condenser
Unit
Service Loop
Max.
33'
(10 m)
Remote
Condenser
Unit
Max.
10'
(3 m)
Icemaker
Service Loop
Fig. 9
Fig. 10
25
2. Checks Before Installation
1) Remove the shipping carton, tape, and packing material.
2) Check that the refrigerant lines do not rub or touch lines or other surfaces, and that the
fan blade moves freely.
3. Setup
1) Assemble two sets of legs using the legs, bolts, and nuts provided. See Fig. 11.
2) Position one of the plates provided between a set of legs and the remote condenser
unit, then secure the legs to the remote condenser unit with the bolts and nuts provided.
Repeat on the other side with the remaining set of legs.
3) The bottom of each leg has a mounting hole. Secure the legs to the permanent site with
4 bolts (not included).
Fig. 11
Bolt with Split Lock
Washer and Flat Washer
Nut
Plate
Leg
Bolt with Split Lock
Washer and Flat Washer
Nut
26
4. Line Set Size and Refrigerant Charge
NOTICE
The icemaker, line set, and remote condenser unit must contain the same type
of refrigerant. Mixing of refrigerants will result in improper operation and possible
damage to the refrigeration system.
Line Set Size and Refrigerant Charge
Hoshizaki
Icemaker
Hoshizaki
Remote
Condenser
Unit
Line Set
Up to 66 Feet (20 m)
Line Set
Greater than 66 Feet (20 m)
Maximum 100 Feet (30.5 m)
Liquid
Line
Discharge
Line
Charge
Adjustment
Liquid
Line
Discharge
Line
Charge Adjustment
(R-404A)
KMD-505MRJZ URC-5FZ 1/4"
OD
3/8"
OD
Not
Applicable
3/8"
OD
1/2" OD Add 16.5 oz. (468g)
to compensate for
larger diameter line
sizes, then add
0.4oz. for each foot
over 66 feet (40
g for each meter
over 20m). Write
new total charge on
icemaker's rating
label.
KMD-705MRJZ URC-9FZ 3/8"
OD
1/2" OD Not
Applicable
3/8"
OD
1/2" OD Add 0.4 oz. for each
foot over 66 feet
(40g for each meter
over 20m). Write
new total charge on
icemaker's rating
label.
27
5. Line Set Installation
WARNING
• R-404A itself is not ammable at atmospheric pressure and temperatures up to
176°F (80°C).
• R-404A itself is not explosive or poisonous. However, when exposed to high
temperatures (open ames), R-404A can be decomposed to form hydrouoric
acid and carbonyl uoride both of which are hazardous.
• Do not use silver alloy or copper alloy containing arsenic.
• Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of
refrigerant to the line set tubing through the service valve access ports (ifusing
an electronic leak detector), and then raise the pressure using nitrogen gas
(140PSIG). Do not use R-404A as a mixture with pressurized air for leak testing.
NOTICE
• Do not open any service valve until the line set installation is complete and leak
tested.
• Ensure that there are no traps and no kinks in the line set.
• Do not coil extra line set.
a) Line Set Up to 66' (20 m)
1) Route the factory line set or appropriate size copper tubing. When eld fabricating,
insulate the copper tubes separately. Leave a service loop behind the icemaker to allow
the icemaker to be pulled out for service. See Fig. 9.
Note: • The service loop is not considered an oil trap
• The maximum line length for the standard line sizes and refrigerant charge is
66' (20 m). With larger line sizes and/or additional refrigerant, the maximum line
length is 100' (30.5 m). For details, see "II.G.4 Line Set Size and Refrigerant
Charge."
2) Remove any extra line set length, then insulate the two copper tubes separately.
28
Icemaker
3) Remove the Schrader valve cores from the icemaker liquid line and discharge line
service valves.
4) KMD-505MRJZ:
a) Remove one of the straight copper tubes from the icemaker accessory bag and
place it in the icemaker liquid line service valve. See Fig. 12.
b) Place the line set liquid line copper tube into the straight copper tube.
Service Valve Cap
Condenser Unit Discharge Line
Service Valve
Access Valve Cap
Schrader Valve
Core
Straight Copper Tube
Fig. 12
4) KMD-705MRJZ: Place the line set liquid line copper tube into the icemaker liquid line
service valve.
NOTICE
• Before brazing, remove the Schrader valve cores from the service valve access
ports.
• When brazing protect the service valve by using a wet cloth to prevent the
service valve from overheating.
• Braze all ttings while purging with a nitrogen gas owing at a pressure of 3 to 4
PSIG.
5) KMD-505MRJZ: Braze the line set liquid line copper tube to the straight copper tube,
then braze the straight copper tube to the icemaker liquid line service valve.
5) KMD-705MRJZ: Braze the line set liquid line copper tube to the icemaker liquid line
service valve.
6) Place the line set discharge line copper tube into the icemaker discharge line service
valve.
7) Braze the icemaker line set discharge line copper tube to the icemaker discharge line
service valve.
29
Condenser Unit
8) Remove the Schrader valve cores from the condenser unit liquid line and discharge line
service valves.
9) KMD-505MRJZ:
a) Remove the remaining straight copper tube from the icemaker accessory bag and
place it in the condenser unit liquid line service valve. See Fig. 13.
b) Place the line set liquid line copper tube into the straight copper tube.
Fig. 13
9) KMD-705MRJZ: Place the line set liquid line copper tube into the condenser unit liquid
line service valve.
NOTICE
• Before brazing, remove the Schrader valve cores from the service valve access
ports.
• When brazing protect the service valve by using a wet cloth to prevent the
service valve from overheating.
• Braze all ttings while purging with a nitrogen gas owing at a pressure of 3 to 4
PSIG.
10) KMD-505MRJZ: Braze the line set liquid line copper tube to the straight copper tube,
then braze the liquid line straight copper tube to the condenser unit liquid line service
valve.
10) KMD-705MRJZ: Braze the line set liquid line copper tube to the condenser unit liquid
line service valve.
11) Place the line set discharge line copper tube into the condenser unit discharge line
service valve.
12) Braze the line set discharge line copper tube to the condenser unit discharge line
service valve.
13) Allow the service valves to cool, then replace the icemaker and condenser unit
Schrader valve cores. Attach the gauge manifold hoses.
14) Add a trace of refrigerant to the line set tubing through the service valve access ports
(if using an electronic leak detector), and then raise the pressure using nitrogen
gas (140 PSIG). Use an electronic leak detector or soap bubbles to check for leaks.
WARNING! Do not use R-404A as a mixture with pressurized air for leak testing.
Service Valve Cap
Condenser Unit Discharge Line
Service Valve
Access Valve Cap
Schrader Valve
Core
Straight Copper Tube
30
15) After checking the line set for leaks, vent the nitrogen charge from the line set.
16) Evacuate the line set. Allow the vacuum pump to pull down to a 29.9" Hg vacuum.
Evacuating period depends on pump capacity.
17) After evacuation, charge each line set tube with R-404A vapor to a pressure of 15 to 30
PSIG.
18) Close both gauge manifold valves.
19) Open the icemaker service valves rst, then open the remote condenser unit service
valves.
20) Disconnect the gauge manifold hoses.
21) Replace all service valve caps and tighten.
22) Insulate all exposed tubing and ttings.
31
Fig. 14
b) Line Set Greater Than 66' (20 m) Up to a Maximum of 100' (30.5 m)
1) Route the factory line set or appropriate size copper tubing. When eld fabricating,
insulate the copper tubes separately. Leave a service loop behind the icemaker to allow
the icemaker to be pulled out for service. See Fig. 9.
Note: • The service loop is not considered an oil trap.
• The maximum line length for the standard line sizes and refrigerant charge is
66' (20 m). With larger line sizes and/or additional refrigerant, the maximum line
length is 100' (30.5 m). For details, see "II.G.4 Line Set Size and Refrigerant
Charge."
2) Remove any extra line set length, then insulate the two copper tubes separately.
Icemaker
3) Remove the Schrader valve cores from the icemaker liquid line and discharge line
service valves.
4) Place the line set liquid line copper tube into the icemaker liquid line service valve.
5) KMD-505MRJZ:
a) Using a 1/2"×3/8" copper slip reducer
(not provided), place the 3/8" end of the
copper slip reducer into the icemaker
discharge line service valve (3/8").
b) Place the line set discharge line copper
tube (1/2") into the copper tube slip reducer
1/2" end. See Fig. 14.
5) KMD-705MRJZ: Place the line set discharge line copper tube into the icemaker
discharge line service valve.
NOTICE
• Before brazing, remove the Schrader valve cores from the service valve access
ports.
• When brazing protect the service valve by using a wet cloth to prevent the
service valve from overheating.
• Braze all ttings while purging with a nitrogen gas owing at a pressure of 3 to 4
PSIG.
6) Braze the line set liquid line copper tube to the icemaker liquid line service valve.
7) KMD-505MRJZ: Braze the line set discharge line copper tube to the 1/2"×3/8" copper
slip reducer and then braze the 1/2"×3/8" copper slip reducer to the icemaker discharge
line service valve.
7) KMD-705MRJZ Models: Braze the line set discharge line copper tube to the icemaker
discharge line service valve.
Service Valve Cap
Condenser Unit
Discharge Line
Service Valve
Access Valve Cap
Schrader Valve Core
1/2×3/8 Copper Reducer 1/2" Diameter End
3/8" Diameter End
32
Condenser Unit
8) Remove the Schrader valve cores from the condenser unit liquid line and discharge line
service valves.
9) Place the line set liquid line copper tube into the condensing unit liquid line service
valve.
10) KMD-505MRJZ:
a) Using a 1/2"×3/8" copper slip reducer (not provided), place the 3/8" end of the
copper slip reducer into the condensing unit discharge line service valve (3/8").
b) Place the line set discharge line copper tube (1/2") into the copper tube slip reducer
1/2" end. See Fig. 15.
Fig. 15
10) KMD-705MRJZ: Place the line set discharge line copper tube into the condenser unit
discharge line service valve.
NOTICE
• Before brazing, remove the Schrader valve cores from the service valve access
ports.
• When brazing protect the service valve by using a wet cloth to prevent the
service valve from overheating.
• Braze all ttings while purging with a nitrogen gas owing at a pressure of 3 to 4
PSIG.
11) Braze the line set liquid line copper tube to the condenser unit liquid line service valve.
12) KMD-505MRJZ: Braze the line set discharge line copper tube to the 1/2"×3/8" copper
slip reducer and then braze the 1/2"×3/8" copper slip reducer to the condenser unit
discharge line service valve.
12) KMD-705MRJZ Models: Braze the line set discharge line copper tube to the condenser
unit discharge line service valve.
13) Allow the service valves to cool, then replace the icemaker and condenser unit Schrader
valve cores. Attach the gauge manifold hoses.
14) Add a trace of refrigerant to the line set tubing through the service valve access ports
(if using an electronic leak detector), and then raise the pressure using nitrogen
gas (140 PSIG). Use an electronic leak detector or soap bubbles to check for leaks.
WARNING! Do not use R-404A as a mixture with pressurized air for leak testing.
Service Valve Cap
Condenser Unit Discharge Line
Service Valve
Access Valve Cap
Schrader Valve Core
1/2×3/8 Copper Reducer
1/2" Diameter End
3/8" Diameter End
33
15) After checking the line set for leaks, vent the nitrogen charge from the line set.
16) Evacuate the line set. Allow the vacuum pump to pull down to a 29.9" Hg vacuum.
Evacuating period depends on pump capacity.
17) After evacuation, add the appropriate amount of additional R-404A. See "II.G.4 Line Set
Size and Refrigerant Charge" for details.
Hoshizaki Technical Support is available at 1-800-233-1940 for recommendations.
18) Close both gauge manifold valves.
19) Open the icemaker service valves rst, then open the remote condenser unit service
valves.
20) Disconnect the gauge manifold hoses.
21) Replace all service valve caps and tighten.
22) Insulate all exposed tubing and ttings.
34
6. Electrical Connection
WARNING
• Electrical connection must meet national, state, and local electrical code
requirements. Failure to meet these code requirements could result in death,
electric shock, serious injury, re, or damage.
• To reduce the risk of electric shock, make all remote condenser unit connections
before connecting the icemaker power supply.
• THE REMOTE CONDENSER UNIT MUST BE GROUNDED. Install a ground wire
from the icemaker's fan motor junction box to the remote condenser unit's junction
box. Use wire of an appropriate gage and outdoor rating. Failure to properly
ground the remote condenser unit could result in death or serious injury.
• Install line and neutral wires from the fan motor leads in the icemaker's fan motor
junction box to the leads in the remote condenser unit's junction box. Use wire of
an appropriate gage and outdoor rating.
• Do not connect the fan motor leads in the icemaker to incoming power source.
Do not connect the fan motor leads in the icemaker together. Do not allow the
leads to contact the junction box walls.
• Do not connect the remote condenser unit to an external power source.
NOTICE
On remote models, the icemaker must have power for a minimum of 4hours prior
to startup to prevent compressor damage.
• Usually an electrical permit and services of a licensed electrician are required.
• The opening for the power supply connection is 7/8" DIA. to t a 1/2" trade size conduit.
1) Remove the remote condenser unit louver panel. See Fig. 16.
2) Install the icemaker fan motor tting (7/8" DIA. to t a 1/2" trade size conduit).
Fig. 16
Screws
Louver Panel
Junction Box
Cover
Remote Condenser Unit
Icemaker
Condenser Unit Fan
Motor Connection
35
3) Install a ground wire from the icemaker fan motor junction box to the remote condenser
unit junction box. Use wire of an appropriate gage and outdoor rating.
4) Install line and neutral wires from the fan motor leads in the icemaker fan motor junction
box to the leads in the remote condenser unit junction box. Use wire of an appropriate
gage and outdoor rating.
5) Replace the junction box covers and the louver panel in their correct positions.
7. Stacking Remote Condenser Unit
1) Install the lower remote condenser unit as described earlier in this section.
2) Place the upper remote condenser unit on top of the lower. See Fig. 17.
3) Secure the upper remote condenser unit to the lower remote condenser unit with the
4screws provided.
4) Install refrigerant lines and make electrical connection as described earlier in this
section.
Fig. 17
Upper Remote
Condenser Unit
Screws
Lower Remote
Condenser Unit
Screws
36
H. Final Checklist
1. Pre-Startup
1) Is the icemaker level?
2) Is the icemaker in a site where the ambient temperature is within 45°F to 100°F (7°C to
38°C) and the water temperature within 45°F to 90°F (7°C to 32°C) all year around?
3) Is there at least 6" (15 cm) clearance at rear, sides, and top of the icemaker?
4) Have the shipping carton, tape, and packing material been removed from the icemaker?
Is the cube guide in the correct position?
5) Have all electrical and water connections been made? Do electrical and water
connections meet applicable national, state, and local code and regulation
requirements?
6) Has the power supply voltage been checked or tested against the nameplate rating?
Has a proper ground been installed to the icemaker? On remote models, has a proper
ground also been installed to the remote condenser unit?
7) Are the water supply and drain lines sized as specied? Are the water supply line
shut-off valve(s) and drain valve(s) installed? Has the water supply pressure been
checked to ensure a minimum of 10 PSIG and a maximum of 113 PSIG?
8) Is the compressor snug on all mounting pads? Have the refrigerant lines been checked
to make sure they do not rub or touch other lines or surfaces? Has the fan blade
(if applicable) been checked to make sure it turns freely?
9) On remote models:
• Is the line set sized as specied, insulated, tightened, and free of leaks and kinks?
• If the line set exceeds 66' (20 m), has the line set size (if applicable) and charge been
adjusted as specied?
• Has the appliance power supply been on for a minimum of 4 hours?
• Is the remote condenser unit in a site where the ambient temperature is
within -20°F to +122°F (-29°C to +50°C) all year around?
• Is there at least 24" (61 cm) clearance around the remote condenser unit?
10) Continue to "I. Startup."
37
2. Post-Startup
WARNING
CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews
are securely in place after installation. Make sure that none have fallen into the
dispenser unit/ice storage bin.
1) Has the bin control been set to the proper setting for the application?
2) Has the bin control operation been conrmed?
3) Are all components, fasteners, and thumbscrews securely in place?
4) Has the end user been given the instruction manual, and instructed on how to operate
the appliance and the importance of the recommended periodic maintenance?
5) Has the end user been given the contact information of an authorized service agent?
6) Has the warranty registration been completed and submitted to the factory?
38
I. Startup
1. Bin Control Setting
An ultrasonic sensor is used as the bin control to control the level of ice in the dispenser
unit/ice storage bin. The bin control setting must be set to match the application to avoid
possible icemaker movement, water leakage, or ice overow.
WARNING
• Improper adjustment may adversely affect safety, performance, component life,
and warranty coverage.
• On dispenser unit applications, do not increase ice level above the recommended
setting listed below. Higher ice levels could result in icemaker movement, water
leakage, or ice overow.
NOTICE
Do not allow top kits or top kit risers (if applicable) to interfere with the bin control
lens sensing area or the icemaker will not operate properly.
1) Make sure the power supply is off. If not already removed, remove the front and top
panels and the control box cover.
2) Conrm the correct control board bin control setting required for your application and
adjust as detailed below.
Application Bin Control Setting Reference
Standard Ice Storage Bins (Factory Default) 1 See Fig. 18
Hoshizaki DB and DM Dispensers 2
Coca-Cola Freestyle
®
Dispensers 3
Non-Hoshizaki Dispensers Measurement Required See Fig. 19
39
For Standard Ice Storage Bins, Hoshizaki DB and DM Dispenser Units, and Coca-Cola
Freestyle
®
Dispenser Units
Application Bin Control Ice Level Settings
Bin Control Setting
Shutdown Distance From Bin Control Lens
(Restart is 4 in. (102 mm) below shutdown distance)
Standard Ice Storage Bins 1
(Factory Default)
304 mm (12")
Do not adjust dispensers to this setting.
Hoshizaki DB and DM Dispensers 2 335 mm (13")
Coca-Cola Freestyle
®
Dispensers 3 416 mm (16 3/8")
Optional Setting 4 522 mm (20.5")
5 610 mm (24")
WARNING
Conrm that the nal ice level location does not allow for icemaker movement,
water leakage, or ice overow.
Fig. 18
Control Board
Recommended Setting for
Hoshizaki DB and DM Dispensers
Recommended Setting for Coca-Cola Freestyle®
Dispensers
Icemaker
Hoshizaki DB-200H
Dispenser Unit
Model Shown:
KMD-505MAJ with DB-200H
Model Shown:
KMD-505MAJ with B-500SF
Icemaker
Standard Ice
Storage Bin
Turn dial to adjust to proper setting
Factory Default for Standard
Ice Storage Bins
WARNING! Do not use this
setting with dispensers.
Bin Control
Lens
Setting #1
Setting #3
Setting #4
Setting #5
Setting #2
Bin Control
Lens
Setting #1
Setting #3
Setting #4
Setting #5
Setting #2
40
For Non-Hoshizaki Dispenser Units
Bin Control Ice Level Settings
Bin Control Setting
Shutdown Distance From Bin Control Lens
(Restart is 4 in. (102 mm) below shutdown distance)
1
(Factory Default)
304 mm (12")
Do not adjust dispensers to this setting.
2 335 mm (13")
3 416 mm (16 3/8")
4 522 mm (20.5")
5 610 mm (24")
WARNING
Conrm that the nal ice level location does not allow for icemaker movement,
water leakage, or ice overow.
NOTICE
The ice level must be lower than the top of the dispenser unit. Also, be sure the top
kit or top kit riser (if applicable) are clear from the bin control lens sensing area.
Fig. 19
Full Bin Measured Distance
(Shutdown Distance) Measure from
the bottom of the compressor base
(bin control lens) to the preferred
full bin level of ice; refer to the
dispenser instruction manual.
Icemaker Restart Level
(4" (102 mm) below preferred
full bin level of ice)
Set Bin Control Setting at or Below Maximum Full
Bin Level of Ice (Shutdown Position) Shown Here
Top Kit
Icemaker
Non-Hoshizaki
Dispenser Unit
Bin Control Setting
Bin Control Lens
Control Board
Factory Default for Standard
Ice Storage Bins
WARNING! Do not use this
setting with dispensers.
Turn dial to adjust to setting
that matches Full Bin Measured
Distance (Shutdown Distance)
Bin Control
Lens
Setting #1
Setting #3
Setting #4
Setting #5
Setting #2
Maximum Full Bin Level of
Ice (Shutdown Position).
WARNING! Do not adjust
bin control setting above
this level.
Model Shown: KMD-505MAJ
41
2. Appliance Startup and Bin Control Check
WARNING
• All parts are factory-adjusted. Improper adjustments may adversely affect safety,
performance, component life, and warranty coverage.
• Make sure the icemaker has been installed as outlined in this manual and that
the water supply is on.
• Improper adjustment may adversely affect safety, performance, component life,
and warranty coverage.
NOTICE
• If the icemaker is turned off, wait for at least 3 minutes before restarting the
icemaker to prevent damage to the compressor.
• To prevent damage to the water pump seal, do not leave the control switch in the
"PUMP" position for extended periods when the water tank is empty.
• At startup, conrm that all internal and external connections are free of leaks.
• Do not allow top kits or top kit risers (if applicable) to interfere with the bin control
lens sensing area or the icemaker will not operate properly.
Additional Notice for Remote Models
• The icemaker must have power for a minimum of 4 hours prior to startup to
prevent compressor damage.
1) If not already removed, remove the front and top panels and control box cover.
Make sure the bin control setting has been adjusted as outlined in "II.I.1. Bin Control
Setting."
2) Open the water supply line shut-off valve(s).
3) Move the mode switch on the control box to the "ICE" position, then move the control
switch to the "ON" position. Turn on the power supply, and allow the icemaker to
operate.
4) Conrm the control board "BIN CLS"
LED is off (bin empty). See Fig. 20.
Ice Level in Bin Control Board "BIN CLS" LED
Empty OFF
Full ON
5) If the control board "BIN CLS" is on
(indicating a full bin), correct any
interference from the top kit or top kit
riser (if applicable).
Control Board
BIN CLS LED
Bin Control Setting
Fig. 20
42
6) 1 min. ll cycle begins. Place an object 5" to 7" (127 to 178mm) away from the bin
control lens. See Fig. 21. 15 sec. later, the icemaker shuts down. Remove the object
from the bin control lens. 30sec. later, the icemaker restarts.
For bin control shutdown times per cycle, see the table below.
Cycle at Bin
Control Activation Shutdown
1 min. Fill Cycle 15 sec. after activation.
Harvest Cycle If engaged 15 sec. or longer, at the end of harvest cycle.
Freeze Cycle 15 sec. after activation if activated at least 15 sec. before the 5-min. short cycle
protection timer terminates. Otherwise, at the end of the next harvest cycle.
Bin Control Lens
Compressor Base
Icemaker
Control Switch
Mode Switch
Fig. 21
7) Once the icemaker restarts, move the control switch to the "OFF" position, then turn off
the power supply.
8) Replace the control box cover in its correct position and secure with the control box
mounting screw.
9) Replace the top and front panels in their correct positions.
10) Turn on the power supply, and allow the icemaker to operate for 10 min.
11) After 10 min., turn off the power supply, then remove the front panel.
12) Remove the front panel. Move the control switch to the "OFF" position, then turn off the
power supply.
13) Remove the front insulation panel, then remove the water tank drain plug located in the
bottom of the water tank. See Fig. 22. Allow the water tank to drain.
Fig. 22
Drain Plug
43
14) After the water tank has drained, replace the drain plug in its correct position.
15) Replace the front insulation panel in its correct position.
16) Clean the dispenser unit/ice storage bin liner using a neutral cleaner. Rinse thoroughly
after cleaning.
17) Move the control switch to the "ON" position. Replace all panels in their correct
positions.
18) Turn on the power supply to start the automatic icemaking process.
19) On water-cooled models, conrm proper condenser drain outlet/return outlet
temperature as outlined in "II.F.2. Water-Cooled Condenser."
20) Return to "II.H.2. Post-Startup" and complete nal checklist.
44
III. Maintenance
The appliance must be maintained in accordance with the instruction manual and labels
provided. Consult with your local Hoshizaki Certied Service Representative about
maintenance service.
WARNING
• Only qualied service technicians should service the appliance.
• To reduce the risk of electric shock, do not touch the control switch or mode switch
with damp hands.
• Move the control switch to the "OFF" position and turn off the power supply before
servicing. Lockout/Tagout to prevent the power supply from being turned back on
inadvertently.
• CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after any maintenance is done to the appliance. Make sure that
none have fallen into the dispenser unit/ice storage bin.
A. Maintenance Schedule
The maintenance schedule below is a guideline. More frequent maintenance may be
required depending on water quality, the appliance's environment, and local sanitation
regulations.
Maintenance Schedule
Frequency Area Task
Daily Scoop Clean the ice scoop using a neutral cleaner. Rinse thoroughly after cleaning.
Bi-Weekly Air Filters Inspect. Wash with warm water and neutral cleaner if dirty.
Monthly External Water
Filters
Check for proper pressure and change if necessary.
Bin Control Lens Wipe down the bin control lens, (located on the bottom of the icemaker) with
a neutral cleaner. Rinse thoroughly after cleaning.
Icemaker Exterior Wipe down with a clean, soft cloth. Use a damp cloth containing a neutral
cleaner to wipe off oil or dirt build up. Clean any chlorine staining (rust
colored spots) using a non-abrasive cleanser.
Underside of
Icemaker and Top
Kits; Bin Door and
Snout
Wipe down with a clean, soft cloth. Use a damp cloth containing a neutral
cleaner to wipe off oil or dirt build up. Clean any chlorine staining (rust
colored spots) using a non-abrasive cleanser.
Yearly Icemaker and
Dispenser Unit/Ice
Storage Bin
Clean and sanitize per the cleaning and sanitizing instructions provided in
this manual. See "III.B. Cleaning and Sanitizing Instructions."
Water Supply Inlet Close the icemaker water supply line shut-off valve and drain the water
system. Clean the water supply inlet screen.
Condenser Inspect. Clean if necessary by using a brush or vacuum cleaner. More
frequent cleaning may be required depending on location.
Water Hoses Inspect the water hoses and clean/replace if necessary.
45
B. Cleaning and Sanitizing Instructions
The icemaker must be cleaned and sanitized at least once a year. More frequent
cleaning and sanitizing may be required in some water conditions.
WARNING
• To prevent injury to individuals and damage to the icemaker, do not use ammonia
type cleaners.
• Carefully follow any instructions provided with the bottles of cleaning and
sanitizing solution.
• Always wear liquid-proof gloves and goggles to prevent the cleaning and sanitizing
solutions from coming into contact with skin or eyes.
• Do not leave the icemaker unattended when panels are off.
NOTICE
• To prevent damage to the water pump, do not leave the control switch in the
"PUMP" position for extended periods when the water tank is empty.
• Terminating a cleaning/sanitizing cycle early:
a) Terminating a cleaning cycle at step 4 or earlier in "Cleaning" below, returns
the icemaker to the normal icemaking mode. The control board "CLEAN" LED
turns off.
b) Terminating a cleaning cycle at step 5 or later in "Cleaning" below, sends the
icemaker into a 3-rinse cycle (app. 18 min.). The control board "CLEAN" LED
remains on throughout the 3-rinse cycles. After the 3rd rinse cycle, icemaker
goes into the normal icemaking mode and the control board "CLEAN" LED
turns off.
Preparation
1) Remove the front panel, then move the control switch to the "OFF" position. Make sure
the mode switch is in the "ICE" position. After 3 minutes, move the control switch to the
"ON" position and replace the front panel.
2) Allow the appliance to run until the compressor energizes. Once the compressor
energizes, allow the appliance to run for an additional 3 minutes, then remove the front
panel and control box cover. Move the control switch to the "OFF" position.
3) Remove all ice from the dispenser unit/ice storage bin. WARNING! If on a dispenser
unit, turn off the dispenser unit power supply after dispensing the ice.
Cleaning
4) Move the mode switch to the "CLEAN" position, then move the control switch to the
"ON" position (1 short beep occurs, then 3 seconds later 1 long beep occurs). Replace
the front panel. The water tank drains and then lls.
5) When the control board starts beeping (2 beep sequence), remove the front panel.
Move the control switch to the "OFF" position.
46
6) Remove the front insulation panel, then pour 17 . oz. (503 ml) of Hoshizaki "Scale
Away" into the water tank. Replace the front insulation panel.
7) Move the control switch to the "ON" position (1 short beep occurs, then 3 seconds later
1long beep occurs). Replace the front panel. To avoid excessive foaming in the water
tank, there is a 1minute delay before circulation begins. After approximately 30 minutes
of circulation, the icemaker performs 3 rinse cycles.
8) When the control board starts beeping (5 beep sequence), remove the front panel.
Move the control switch to the "OFF" position.
9) In bad or severe water conditions, turn off the power supply, then remove, clean
(cleaning solution = 5 oz. Hoshizaki "Scale Away" per gallon of warm water), rinse, and
replace the cube guide, oat switch, water supply tubes, spray tubes, and spray guides;
turn on the power supply when complete. Otherwise, continue to step 10.
10) Wipe down the bin control lens, (located on the bottom of the icemaker) with a neutral
cleaner. Rinse thoroughly after cleaning. Note: If the bottom of the icemaker is not
accessible in your application, remove the top and right side panels, then remove the
thumbscrew securing the bin control housing and remove the bin control housing from
the base. After cleaning and rinsing the bin control lens, replace the bin control housing
in its correct position and secure it with the thumbscrew. Next, replace the right side and
top panels in their correct positions.
Sanitizing
11) Conrm the mode switch is in the "CLEAN" position, then move the control switch to the
"ON" position (1 short beep occurs, then 3 seconds later 1 long beep occurs). Replace
the front panel. The water tank drains and then lls.
12) When the control board starts beeping (2 beep sequence), remove the front panel.
Move the control switch to the "OFF" position.
13) Remove the front insulation panel, then pour 1 . oz. (31 ml) of a 7.5% sodium
hypochlorite solution (chlorine bleach) into the water tank. Replace the front insulation
panel. IMPORTANT! Use regular bleach with no additives. Using a bleach with
additives causes excessive foaming during sanitizing, reducing the effectiveness
of sanitizing.
14) Move the control switch to the "ON" position (1 short beep occurs, then 3 seconds later
1long beep occurs). Replace the front panel. To avoid excessive foaming in the water
tank, there is a 1minute delay before circulation begins. After approximately 30 minutes
of circulation, the icemaker performs 3rinse cycles.
15) When the control board starts beeping (5 beep sequence), remove the front panel.
Move the control switch to the "OFF" position.
16) Clean the dispenser unit/ice storage bin liner using a neutral cleaner. Rinse thoroughly
after cleaning.
17) Move the mode switch to the "ICE" position, then move the control switch to the "ON"
position. Note: If on a dispenser unit, turn on the dispenser unit power supply.
18) Replace all panels and covers in their correct positions.
47
IV. Preparing the Appliance for Periods of Non-Use
NOTICE
• When storing the appliance for an extended time or in sub-freezing temperatures,
follow the instructions below to prevent damage.
• To prevent damage to the water pump, do not leave the control switch in the
"PUMP" position for extended periods when the water tank is empty.
When the appliance is not used for two or three days under normal conditions, it is
sufficient to move the control switch to the "OFF" position. When storing the appliance for
an extended time or in sub-freezing temperatures, follow the instructions below.
1. Remove the water from the icemaker water supply line:
1) Remove the front panel. Move the control switch to the "OFF" position, then turn off the
power supply.
2) Close the icemaker water supply line shut-off valve, then open the icemaker water
supply line drain valve.
3) Allow the line to drain by gravity.
4) Attach a compressed air or carbon dioxide supply to the icemaker water supply line
drain valve.
5) Move the control switch to the "ICE" position.
6) Replace the front panel in its correct position, then turn on the power supply.
7) Blow the icemaker water supply line out using the compressed air or carbon dioxide
supply.
8) Close the icemaker water supply line drain valve.
2. Drain the water tank:
1) Remove the front panel. Move the control switch to the "OFF" position, then turn off the
power supply.
2) Remove the front insulation panel, then
remove the water tank drain plug located in
the bottom of the water tank. See Fig. 23.
Allow the water tank to drain.
3) After the water tank has drained, replace
the drain plug in its correct position.
4) Replace the front insulation panel and front
panel in their correct positions.
5) Remove all ice from the dispenser unit/ice
storage bin. Clean the dispenser unit/ice
storage bin liner using a neutral cleaner.
Rinse thoroughly after cleaning.
Fig. 23
Drain Plug
48
3. On water-cooled model, remove the water from the water-cooled condenser:
1) Make sure the power supply is off, then remove the front, top, and right side panels.
2) Close the condenser water supply line shut-off valve. If connected to a closed loop
system, also close the condenser return line shut-off valve.
3) Open the condenser water supply line drain valve. If connected to a closed loop system,
also open the condenser return line drain valve.
4) Attach a compressed air or carbon dioxide supply to the condenser water supply line
drain valve.
5) Open the water regulating valve by using a screwdriver to pry up on the spring retainer
underneath the spring. While holding the valve open, blow out the condenser using the
compressed air or carbon dioxide supply until water stops coming out.
6) Close the drain valve(s).
7) Replace the right side, top, and front panels in their correct positions.
49
V. Disposal
The appliance contains refrigerant and must be disposed of in accordance with
applicable national, state, and local codes and regulations. Refrigerant must be
recovered by properly certied service personnel.
50
618 Hwy. 74 South, Peachtree City, GA 30269 USA (P) 770.487.2331 (F) 770.487.3360 hoshizakiamerica.com 1A7897-010
