Installation and User’s Manual for
Meridian Ice Maker-Dispensers
models
HID312, HID525 and HID540
HID312, HID525 and HID540
Installation and User’s Manual
July 2018
Page 1
Introduction
The ice maker-dispensers covered in this manual
were designed by to be the nest on the market. Their
design is a result of Scotsman’s long experience in ice
maker-dispensers.
This manual includes the information needed to
install, start up and operate the machine. Because
there are three models covered, be sure that any
instructions apply to your unit.
HID312 is 16 inches wide and air cooled only.
HID525 is 21 inches wide and 34.9 inches tall. it is
available as an air cooled model or as a water cooled
model.
HID540 is also 21 inches wide, but it is 40.9 inches
tall. it is also available either air or water cooled.
Observe any caution or warning notices. They are
important and provide notice of potential hazards.
Keep this manual for future reference.
If additional technical information is needed, go to
Scotsman’s website, www.scotsman-ice.com to
download a service manual.
Note: This is a commercial product. If service is
needed on a unit in a residence, use a commercial
service company. Locate one at the website above.
Contents
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
HID312 Cabinet Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4
HID525 Cabinet Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5
HID540 Cabinet Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6
Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7
Counter Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8
Machine Stands / Legs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9
Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 10
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 11
Initial Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 12
Operation: Ice and Water Vending . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 13
Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 14
Maintenance and Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15
Air lter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 16
Maintenance and Cleaning - Dispensing Bin Components . . . . . . . . . . . . . . . . . . . . Page 17
Ice level controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 18
Ice Making and Ice Dispensing System Cleaning Instructions. . . . . . . . . . . . . . . . . . . Page 19
Other Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 21
Basic Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 22
Controller Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 23
HID312, HID525 and HID540
Installation and User’s Manual
September 2020
Page 2
Specications
The ice maker-dispenser is designed to be installed
indoors, in a controlled environment. Although
it can operate in a wide range of air and water
temperatures, it will provide the best performance if
not subject to extremes.
Air Temperature Limitations
• Maximum: 100
o
F. or 38
o
C.
• Minimum: 50
o
F. or 10
o
C.
Water Temperature Limitations
• Maximum: 100
o
F. or 38
o
C.
• Minimum: 40
o
F. or 4.4
o
C.
Water Pressure, potable
• Maximum: 80 PSI or 5.5 Bar
• Minimum: 20 PSI or 1.3 Bar
Water Pressure, condenser inlet
• Maximum: 145 PSI or 10 Bar
• Minimum: 20 PSI or 1.3 bar; can be as low as 5
PSI or .3 Bar if clean & supplied with 45
o
F. water)
Condenser GPM
• 70
o
F. water: .25 or .95 LPM
• 50
o
F. water: .15 or .57 LPM
Water Conductivity:
• Minimum: 10 microSiemens/cm
RO water may be supplied to the potable water
system, but if it has less than the above conductivity,
the water level sensor will not detect water and the
unit will not make ice.
Deionized water will not work and isn’t recommended.
Voltage
• Maximum: 126 Minimum: 104
Operating the machine outside of any of the above
limitations is considered abuse and any resulting
damage is not covered by warranty and could cause a
complete loss of warranty coverage.
Warranty Information
The warranty statement for this product is provided
separately from this manual. Refer to it for applicable
coverage. In general warranty covers defects
in material or workmanship. It does not cover
maintenance, corrections to installations, or situations
when the machine is operated in circumstances that
exceed the limitations printed above.
Product Information
The product is an ice maker-dispenser. It is designed
to be installed on a counter top or on a specic
machine stand.
• All models require a drain. An internal drain basin
separates the ice storage bin’s drain from the drip tray
drain.
• A backow preventer may be required by local
plumbing codes.
• Has a 7.5 ft. power cord with NEMA 5-15P plug.
• Air cooled models ow air left to right and include
a cleanable air lter.
• Legs are optional. Thread size 3/8 - 16.
• Special models are required for wall mounting.
• Two dierent dispensing methods are available:
Touch-free models utilize infra-red sensors to
trigger ice and water dispensing.
Button activated dispensing models trigger ice
and water dispensing via nger press buttons.
• For available options and kits, see sales literature.
Scotsman Ice Systems are designed and
manufactured with the highest regard for safety and
performance. They meet or exceed the standards of
UL and NSF.
Scotsman assumes no liability or responsibility of
any kind for products manufactured by Scotsman
that have been altered in any way, including the use
of any part and/or other components not specically
approved by Scotsman.
Scotsman reserves the right to make design changes
and/or improvements at any time. Specications and
design are subject to change without notice.
HID312, HID525 and HID540
Installation and User’s Manual
September 2020
Page 3
Models
Model Series Dispensing Type Electrical Condenser Typical Amp Draw Max Fuse Size
HID312A-1 A Touch Free 115/60/1 Air 5.7 - 6 15
HID312AB-1 A Button Activated 115/60/1 Air 5.7 - 6 15
HID525A-1 A Touch Free 115/60/1 Air 7.2 - 8 15
HID525W-1 A Touch Free 115/60/1 Water 7.2 - 8 15
HID525AB-1 A Button Activated 115/60/1 Air 7.2 - 8 15
HID525WB-1 A Button Activated 115/60/1 Water 7.2 - 8 15
HID540A-1 A Touch Free 115/60/1 Air 7.2 - 8 15
HID540W-1 A Touch Free 115/60/1 Water 7.2 - 8 15
HID540AB-1 A Button Activated 115/60/1 Air 7.2 - 8 15
HID540WB-1 A Button Activated 115/60/1 Water 7.2 - 8 15
HID312, HID525 and HID540
Installation and User’s Manual
March 2015
Page 4
HID312 Cabinet Drawing
41.5
16.36
41.3
16.25
10.2
4.00
OPTION LEGS
ADJUSTABLE
34.6
13.62
REMOVABLE
AIR FILTER
AIR FLOW
ICE CHUTE
WATER CHUTE
88.6
34.88
0.3
.12
27.9
11.00
61.9
24.38
59.7
23.50
5.1
2.01
UTILITY
CHASE
7.7
3.02
10.2
4.00
36.8
14.50
3
1.17
9.7
3.80
UTILITY
CHASE
4.6
1.80
8.3
3.25
3/4" FPT
DRAIN
3/8" FLARE
WATER INLET
POWER
CORD
FRONT VIEW
RIGHT SIDE VIEW
BACK VIEW
AIR FLOW
HID312, HID525 and HID540
Installation and User’s Manual
March 2015
Page 5
HID525 Cabinet Drawing
54
21.25
54.2
21.36
10.2
4.00
OPTION LEGS
ADJUSTABLE
66
26.00
55.9
22.00
52.1
20.50
47.3
18.62
REMOVABLE
AIR FILTER
ICE CHUTE
WATER CHUTE
AIR
FLOW
AIR
FLOW
61.9
24.38
59.7
23.50
0.3
.12
88.6
34.88
27.9
11.00
5.1
2.01
UTILITY
CHASE
7.7
3.02
36.8
14.50
10.2
4.00
4.6
1.80
3
1.17
9.7
3.80
UTILITY
CHASE
5.1
2.00
18.9
7.45
12.5
4.94
17.8
7.00
3/8" FLARE
WATER INLET
POWER
CORD
3/8 FPT
CONDENSER
WATER INLET
(WC ONLY)
3/4" FPT
DRAIN
1/2 FPT
CONDENSER
DRAIN
(WC ONLY)
BACK VIEW
RIGHT SIDE VIEW
FRONT VIEW
HID312, HID525 and HID540
Installation and User’s Manual
March 2015
Page 6
HID540 Cabinet Drawing
54.2
21.36
54
21.25
10.2
4.00
OPTION LEGS
ADJUSTABLE
47.3
18.62
ICE CHUTE
REMOVABLE
AIR FILTER
61.9
24.38
103.8
40.88
27.9
11.00
0.3
.12
59.7
23.50
5.1
2.01
7.7
3.02
10.2
4.00
36.8
14.50
9.7
3.80
UTILITY
CHASE
3
1.17
4.6
1.80
5.1
2.00
18.9
7.45
12.5
4.94
17.8
7.00
POWER
CORD
3/4" FPT
DRAIN
1/2 FPT
CONDENSER
DRAIN
(WC ONLY)
3/8 FPT
CONDENSER
WATER INLET
(WC ONLY)
3/8" FLARE
WATER INLET
AIR FLOWAIR FLOW
BACK VIEW
RIGHT SIDE VIEW
FRONT VIEW
HID312, HID525 and HID540
Installation and User’s Manual
September 2020
Page 7
Placement
The location of the equipment should be selected
with care. Consideration should be given to allow
adequate space on the sides for air cooled models to
breathe.
Minimum clearances for air cooled models:
• 6 inches at each side
• 2 inches above, 10” more to allow auger removal
when ceiling is xed.
• 6 inches at the back.
Air cooled models ow air left to right. More space
than the minimum at the sides will maximize
performance.
The power outlet should be located within the length
of the supplied power cord. If placed on a counter,
the counter must be strong enough to support the
weight of the unit. Space above the cabinet should be
allowed for service and maintenance. If legs will be
used, allow space for the total cabinet height.
Air cooled models in a small room will require
ventilation to exhaust the heat they produce. They
also produce some added noise from the fan.
Noise sensitive areas should consider water cooled
equipment or the machine located where the noise
from ice making is not objectionable.
Touch-Free dispensing models should avoid areas
with nearby infrared emitters or a window that allows
sunlight to shine on a dispensing sensor which may
cause the unit to dispense without a container to
trigger it.
Cafeteria applications.
The unit can be placed in a cafeteria line for ice and
water. As some users sometimes dispense too much
ice, high volume use may require the drip tray to be
occasionally cleared of spilled ice.
Unpack
1. Separate the carton from the shipping pallet.
2. Remove any strapping holding the cabinet to the
pallet.
3. Inspect for hidden shipping damage. If any is
found, retain carton and notify carrier for potential
claim. Shipping damage is not covered by
warranty.
4. Remove bolts holding machine to pallet. Use
caution to not tip unit too far when removing bolts.
5. Remove plastic covering the drip tray.
6. Remove the protective plastic covering the panels.
The longer it is left on the panel, the harder it will
be to remove it.
7. Place unit on machine stand or on counter. If on
machine stand secure the cabinet to the machine
stand with the required fasteners.
Airow Direction
Unpacking
HID312, HID525 and HID540
Installation and User’s Manual
September 2020
Page 8
Counter Installations
Units placed on a counter must either use legs or be
sealed to the counter top with food grade sealant per
local codes. To avoid disturbing the seal, complete the
installation prior to sealing.
Legs
4” legs are optional for counter top applications. They
are not to be used on the HID dispenser when it is
placed on a machine stand.
Set Up
The drip tray and cup rest are shipped in place, there
is no need to attach or remove them. It is a good idea
to remove the front panels and inspect for any loose
or rubbing parts prior to installation.
Panel Removal
Remove one screw at bottom front of upper front
panel, swing bottom of panel forward and lift o the
unit. On button activated dispensing models, rest the
panel on the drip try and unplug button connector to
fully remove panel.
Twist ice and
water chutes
counterclockwise and
pull down to remove.
Remove four screws from
sides of lower front panel,
pull forward slightly lift o
the unit. On Touch-Free
dispensing models, rest it
on the drip tray and unplug
sensor connector to fully
remove panel.
Pre-Start Inspection
Level the cabinet front to back and left to right.
Conrm there are no loose or rubbing parts.
Return splash panel and chutes to unit.
Note: Seal
Chassis to
Counter, do NOT
Seal Drip Tray
Note: Use
only legs of 4”
minimum height.
HID312, HID525 and HID540
Installation and User’s Manual
March 2015
Page 9
Machine Stands / Legs
Scotsman manufactures two machines stands for the HID dispensers: a 16 inch wide model and a 21 inch
wide model. The prior machine stands are not suitable for use with the HID models and their use is not
recommended.
Machine stand for HID312: HST16-A and HST16B-A
Machine stand for HID525: HST21-A and HST21B-A
Machine stand for HID540: HST21-A and HST21B-A
Adjustable legs for All: KLP24A (Set of 4) 4” Adjustable legs.
HID312, HID525 and HID540
Installation and User’s Manual
March 2015
Page 10
Component Location
Agitator,
Dispense Bar,
Dispense
Rotor
Photo-Electric Eye Ice
Level Sensors
Ice Making
System
Water
Reservoir
Compressor
Control Box
Ice Dispense
Sensor
Compressor
Water Dispense
Sensor
Drip Tray
Condenser
Drain Basin
and Manifold
Electronic
Controller
HID312, HID525 and HID540
Installation and User’s Manual
March 2015
Page 11
Installation
Installation should be done by an experienced ice
machine installer. To locate one, call the number on
the back of this manual or go to Scotsman’s website
www.scotsman-ice.com to identify a local distributor or
service company.
The machine will require power, water and drain.
Locate the water supply tting on the lower back of
the cabinet and obtain the correct tting to connect
the water supply.
Plumbing Fittings:
• Potable water inlet: 3/8 male are.
• Cabinet drain: 3/4 FPT.
• Water cooled condenser inlet: 3/8 FPT.
• Water cooled condenser drain: 1/2 FPT
All models:
Connect the potable water supply to the inlet
at the bottom back of the unit. 3/8” OD tubing
recommended. Water lters may be used but are not
required. Note that activated carbon or charcoal water
lters are used for taste and odor problems but also
take out any chlorine that the local water agency may
have added for purication. That can require more
frequent sanitization of the equipment.
Connect drain tubing to the central drain tting at the
back of the cabinet. Use 3/4 inch rigid tubing, use
material to meet local codes. The drain basin in the
machine will act as an internal vent, no additional
vent should be required unless there is a very long
horizontal run. Drain tubing must pitch down 1/4 inch
per foot to the building drain. Insulation of drain tubing
is recommended for most environments.
Water cooled models:
Connect water or coolant supply (if using recirculating
system) to the condenser inlet.
Connect drain (or return if a recirculating system) to
the condenser drain. Use only rigid tubing. Do not
vent this drain tube.
Electrical Supply - 115 volt models
Plug the unit into a dedicated 15 amp outlet. The unit
must be the only device on the circuit. Conrm the
outlet is properly grounded and is in good condition.
Worn outlets should be replaced as they can cause
erratic operation of equipment. Do not use an
extension cord. Do not cut o the ground plug on the
power cord.
Ground fault outlets are not recommended. If ground
fault is required a ground fault breaker should be
used.
Use the services of a licensed electrician when
needed and conform to local and national codes.
Position the unit in its nal location.
Level the unit front to back and left to right.
Seal to the counter top as required per local codes.
Drain Tubing
Potable Water
Connection
Air Cooled Utilities
Water Cooled Utilities
Condenser
Inlet
Condenser
Drain
Power
Cord
Power
Cord
HID312, HID525 and HID540
Installation and User’s Manual
September 2020
Page 12
Initial Start Up
Final check list:
1. Is the icemaker-dispenser installed indoors, in a
location where the air and water temperatures
are controlled, and where they do not go beyond
design limitations?
2. Is there an electrical disconnect (switch or
plug as required) within sight of the installed
machine? Is the machine on a separate circuit?
Has the voltage been checked and compared to
nameplate requirements?
3. Have all of the plumbing connections been made
and checked for leaks?
4. Has the machine been leveled?
5. Is there a minimum of 3 inches of clearance at the
left and right sides of an air cooled machine?
6. Is there clearance at the top and back of the
machine for service and utility connections?
7. Is there a water shut o valve installed near the
machine?
Start Up
1. Remove upper front panel
2. Open the water hand valve, observe that water
enters the water reservoir, lls and then shuts o.
Check for leaks. Repair any leaks before going
any further.
3. Switch electrical supply on. Lights on controller
will ash and then the power light will remain on.
The code display will show O.
4. Push and release the On/O button. The machine
will start the ice making process. The code display
will show F. Air cooled models will discharge warm
air out the right side, water cooled models will
discharge warm (about 110°F.) water out of the
condenser drain.
5. In minutes ice will begin to fall into the dispensing
bin. Check ice dispensing:
Touch-Free dispensing models: hold a
container in front of the Touch-Free ice sensor
(just below the ice delivery spout). Ice should
ow from the spout when a container
is present, and stop dispensing when
the container is removed.
Button activated dispensing models: press the
ice button for 2-3 seconds and release.
Ice will ow when button pressed and stop
when released.
6. Check water dispensing:
Touch-Free dispensing models: hold a
container in front of the Touch-Free water
sensor. Water will ow when a container is
present and stop when it is removed.
Button activated dispensing models: press the
water button for 2-3 seconds and release.
Water will ow when button pressed and stop
when released.
7. Push the On/O button to switch the machine o.
8. Unplug or disconnect electrical power.
9. Remove the top panel and the top of the ice
storage bin. Scoop out any ice in the bin and
sanitize the interior of the ice storage bin by wiping
it with a locally approved sanitizer or a mixture of
1 ounce of household bleach to 2 gallons of water,
allow to air dry.
10. Reconnect electrical power.
11. Push the On/o button to switch the machine on.
12. Replace all covers and panels.
13. Give the owner/user the user manual, instruct
him/her in the operation and maintenance
requirements of the unit. Make sure they know
who to call for service.
14. Fill out the Customer Evaluation and Warranty
Registration form, and mail it in to Scotsman
or register the unit at Scotsman’s website
(www.scotsman-ice.com).
ON / OFF
HID312, HID525 and HID540
Installation and User’s Manual
September 2020
Page 13
Operation: Ice and Water Vending
During ice making soft ice is compressed thru a die
and then broken o into irregular lengths. It will not be
clear and, because of melting, when dispensed it will
not be uniform in size or shape.
Dispensing takes place when the Touch-Free sensor’s
infrared beam bounces back to the sensor from
a container placed directly in front of it, or when
ice/water button is pressed on button activated
dispensing models.
If the container is in front of the Touch-Free sensor
on the left side or the ice button is pressed, the ice
dispensing rotor will rotate and sweep ice over the ice
dispensing chute. Ice will continue to discharge out
this chute as long as the rotor is turning. It stops when
the rotor stops.
If the user does not remove the container from in front
of the sensor or does not release the button, ice will
be dispensed for 24 seconds and then stop.
If the container is in front of the Touch-Free sensor
on the right side or the water button is pressed, the
inlet water valve will open and water will ow into the
container.
If the user does not remove the container from in front
of the senor or does not release the button, water will
be dispensed for 20 seconds and then stop.
Note: Water may dispense cloudy and then clear up in
the glass. That is normal due to air in the water and is
not an indicator of any malfunction.
Other notes:
• An occasional drip may be seen from the ice
dispense chute. This is normal and is from ice melting
inside the chute. A continuous stream of water from
the ice chute indicates a restricted bin drain.
• Clear containers (glass or plastic) may not always
activate the dispense sensors. Retry with an opaque
container.
• The drip tray is not a sink and cannot tolerate
garbage. Coee and soda should not be discarded
into it. Debris like stirring straws that are discarded
into the drip tray will likely cause a drain back up
and need to be removed as soon as they are found.
To minimize the risk of a clogged drain do not allow
anything other than water to go down the drain.
• Both dispensing and ice making are disabled
when the unit is switched o at the controller.
• Splash panel wipe-o. Wiping the splash panel
could result in unintended dispensing. To avoid that, a
disable button has been provided. It is recessed into
the bottom of the chute panel. Push and release it to
disable dispensing for 60 seconds.
Noise
This is a commercial ice machine. It contains a
powerful compressor, heavy duty gear reducer and, if
air cooled, a fan that moves a lot of air. It will produce
some noise when it is making ice. Every eort was
made during its design to minimize the sound level
but some is unavoidable.
Dispense
Sensors
Vending Disable
Switch
HID312, HID525 and HID540
Installation and User’s Manual
September 2020
Page 14
Controller
All models use the same control system.
The electronic controller operates the compressor
(with fan motor), auger drive motor, dispense drive
motor and inlet water solenoid valve. It monitors:
• Reservoir water availability
• Storage bin ice level
• Call for ice dispense
• Call for water dispense
• Refrigeration pressure
• Dispense enable / disable
• Auger motor speed
• Auger motor rotation
• Any installed control options
Many of these are used to insure that the machine
does not damage itself during use. For example, it is
critical that it not attempt to make ice without water, so
if the water sensor is dry, the machine will not make
ice.
Switches - there are four switches:
• Dispense water - to test water dispensing
• Dispense ice - to test ice dispensing
• On/O - to switch the machine on or o. Holding it
in to shut o will stop ice making immediately.
• Clean - to engage the clean mode
Indicators - there are nine LEDs:
• Power - Glows when controller has power
• Status - Glows when in ice making mode
• Time to Clean - Glows when it is time to clean the
machine
• Water Dispense Sensed - glows when the water
dispense sensor has been triggered or water
button pressed*
• Ice Dispensed Sensed - glows when the ice
dispense sensor has been triggered or ice button
pressed*
• Water Dispense - glows when the inlet water
solenoid valve has been powered*
• Ice Dispense - glows when the ice dispense
motor has been powered*
• Auger - glows when the auger motor is on
• Compressor - glows when the compressor is on
* If blinking the water or ice dispensing time limit has
been met.
There is also a code display, the codes are:
O - - - for o
F - - - for ice making
b - - - for bin full
E - - - for controller error
C - - - for clean mode
d - - - for test mode
1 - - - for auger rotation direction wrong
2 - - - for auger speed too slow
3 - - - for no water sensed
4 - - - for high refrigerant pressure
If a number code is triggered, the controller will stop
ice making. A blinking code means it is a temporary
condition. Example: A blinking F occurs during the
ice making restart process; it stops blinking when the
compressor starts.
The controller will automatically restart from a water
interruption or power interruption or when a refrigerant
pressure switch has automatically reset.
To reset the control when it has been manually locked
out, Push and release the On/O button to shut it O
and then Push and release it again to switch it On.
Note: The compressor will not restart for 2 minutes
from the time it was shut o.
HID312, HID525 and HID540
Installation and User’s Manual
September 2020
Page 15
Maintenance and Cleaning
There are ve areas of maintenance:
1. Drip tray and drain system
2. Air cooled condenser lter and condenser
3. Ice dispense bin and rotor
4. Photo eye ice level control
5. Ice making water system
Drip Tray
It is important to keep the drip tray clean of trash.
Remove any as soon as it is noticed. Pour hot water
into the tray on a regular basis to keep the drain open.
Over time the drip tray and cup rest may become
coated with scale or dirt. It can be removed to be
scrubbed at a wash sink.
1. Remove upper front panel. On button activated
dispensing models, rest the panel on the drip
try and unplug button connector to fully remove
panel.
2. Shut the machine o.
3. Twist dispense chutes clockwise and pull down to
remove.
4. Remove screws holding lower front panel to unit.
On Touch-Free dispensing models, unplug lower
panel sensors at the harness connection. Set
panels aside.
5. Pull the sink forward to disconnect it from the
drain. Plug the drain tting with a cloth to keep it
from leaking while the drip tray is being cleaned.
6. Wash out the drip tray and dispense chutes. Use
ice machine scale remover if needed to dissolve
scale.
7. Reverse to reassemble. Be sure drip tray is
pushed back fully into place. Insert chutes and
rotate CCW until they snap into place and stop.
Drip
Tray
Drain
Connection
Dispense
Sensor
Harness
Disconnect
HID312, HID525 and HID540
Installation and User’s Manual
March 2015
Page 16
Air lter
The air lter on the left side of the cabinet will capture
signicant dust and lint during operation. As the dirt
builds up it begins to restrict air ow and causes the
refrigeration system to work longer to make ice. Clean
the air lter regularly.
To remove, pull it forward from the louvers. Do not
leave it out for extended periods of time.
To clean, wash it at a utility sink. Return it to the unit
when clean.
Condenser.
The condenser ns may need cleaning too. Remove
the left side air grill and brush any lint and dirt o the
surface of the condenser. Vacuum any remaining
dirt. Do not damage the ns of the condenser during
cleaning.
Remove Top Panel
Remove Bin Cover and Ice Delivery Chute
HID312, HID525 and HID540
Installation and User’s Manual
September 2020
Page 17
Maintenance and Cleaning - Dispensing Bin Components
The ice storage bin and rotor must be cleaned and
sanitized on a regular basis, at a minimum when the
ice making system is cleaned. Hand tools and hand
protection like rubber gloves are recommended for
this procedure.
Note: Some steps overlap with the procedure on the
next page. This procedure can be independent of the
ice making system cleaning or can be part of it.
Bin Cleaning Procedure
1. Remove upper front panel. On button activated
dispensing models, rest the panel on the drip
try and unplug button connector to fully remove
panel.
2. Remove top panel.
3. Shut machine o.
4. Vend or melt out all ice.
Note: Only add 16 oz water to the bin at a time, as
excess water will drain out the spout.
5. Disconnect ice level control at harness.
6. Unplug or disconnect unit from electrical power.
7. Remove ice storage bin cover, set aside.
8. Remove agitator (rotate CCW), set aside.
9. Remove 2 thumbscrews & chute cover, set aside.
10. Lift up and remove dispense rotor, set aside.
11. Mix a solution of ice machine scale remover, such
as Scotsman Clear 1 and potable water per the
directions supplied with the scale remover.
12. Use a clean cloth and wash all the interior
surfaces of the bin and the bin cover, agitator
bar, chute cover and dispense rotor with the ice
machine scale remover solution. Rinse with clear
water.
13. Mix a 2 gallon solution of locally approved
sanitizer. A possible sanitizer solution is one
packet of Stera Sheen Green Label and 2 gallons
of warm (95
o
to 105
o
F.) potable water.
14. Use a new clean cloth and wash all the interior
surfaces of the bin and the bin cover, agitator bar,
chute cover and dispense rotor with the sanitizer
solution.
15. Return all parts to their original positions and
secure them with their original fasteners.
16. Reconnect electrical power and restart the
machine.
Moving parts hazard.
Risk of personal injury.
Disconnect electrical
power before
proceeding.
Agitator
Chute Cover
Dispense
Rotor
Dispense
Drive Pin
HID312, HID525 and HID540
Installation and User’s Manual
September 2020
Page 18
Ice level controls
Clean if the controller indicates bin full and there
is no ice between the sensors.
1. Remove upper front and top panels.
2. Shut machine o.
3. Disconnect ice level controls at connector.
4. Remove 3 screws and ice storage bin cover.
5. Pull each sensor grommet clip up and o.
6. Push grommets out of bin top.
7. Pull each sensor out of its rubber grommet. Pull
on the part closest to the grommet, not the wire.
8. Wipe the sensor lenses clean with a soft, clean
cloth. Caution - do not scratch the lens. If there
is mineral scale on the lens, ice machine scale
remover will be needed to wipe them clean.
9. Return each sensor to a grommet, push it in until it
snaps into place.
10. Reverse the rest of the steps to reassemble.
Dispensing Bin
The dispensing bin may be removed for cleaning or to
provide service access to other components.
1. Go thru steps 1 thru 10 of the Bin Cleaning
Procedure above.
2. Remove ice sweep.
3. Remove ice delivery chute and chute cover.
4. Remove dispense motor drive pin.
5. Twist and remove the water and ice dispense
chutes.
6. Remove the chute
mounting panel.
7. Remove splash
panel. On Touch-
Free dispensing
models,
disconnect
sensors from
harness and set
panel aside.
8. Locate two 3
prong knob bolts
under the bin.
Remove them.
9. Locate bin drain
and disconnect it
from bin tting.
10. Lift the bin up and
o the chassis.
Clean as needed.
Cover
Clip
Sensor
Grommet
HID312, HID525 and HID540
Installation and User’s Manual
September 2020
Page 19
Ice Making and Ice Dispensing System Cleaning Instructions
Hand tools, cleaning supplies and hand protection are
recommended for this procedure.
Frequency: Recommended minimum time between
cleanings is 6 months. To aid in determining if the
machine has not been cleaned in 6 months, a Time
To Clean light will glow after 6 months of power up
time. Cleaning the machine with the following process
will reset that light and the timer that controls it. More
frequent cleanings may be required based on the
mineral content of the water, run time and potential
airborne contamination.
1. Remove both front panels, disconnecting sensors
or buttons where required.
2. Push On/O button to shut ice making o.
3. Shut water supply o.
4. Drain water from ice making system by pulling
reservoir drain hose from plug at drain basin and
return to plug when drained.
Note: Drain into drain basin in base of unit. Sink must
be attached to unit throughout this process.
5. Remove reservoir cover and ll with hot (110-120
degree F.) water, wait 2 minutes and drain water
from ice making system by pulling reservoir drain
hose from plug and return hose to plug when
drained.
6. Mix a solution of 12 ounces of Scotsman Clear
1 ice machine scale remover and 12 ounces of
clean, potable water.
7. Loosen thumb
screw holding
water reservoir
to post.
8. Lift water
reservoir to the
top of the post
and re-secure
with the thumb
screw.
9. Remove cover
from water
reservoir.
10. Vend all ice from dispenser.
11. Remove dispense bin cover.
12. Remove ice discharge chute cover from top of ice
making system.
13. Pour cleaning
solution into
reservoir.
Caution: solution
is highly acidic.
Use rubber
gloves and Do
Not Spill.
Moving parts hazard.
Risk of personal injury.
Disconnect electrical
power before
proceeding.
Scotsman Ice Machine
Cleaner contains acids.
These compounds may cause
burns.
If swallowed, DO NOT
induce vomiting. Give large
amounts of water or milk. Call
Physician immediately. In
case of external contact, ush
with water.
KEEP OUT OF THE REACH
OF CHILDREN
Reservoir
Drain Hose
Reservoir
Drain Plug
Drain
Basin
Reservoir
Thumb
Screw
Cleaning
Position
HID312, HID525 and HID540
Installation and User’s Manual
August 2016
Page 20
14. Push the Clean button. The unit will operate the
auger motor for 30 minutes and then stop.
Note: Stop at any time by pushing the On/O button.
15. Disconnect unit from electrical power.
16. Drain the scale remover solution from the water
system by pulling the reservoir drain hose from its
plug and return it to the plug when drained.
17. Pour 24 ounces of clean, potable water into the
reservoir.
18. Drain the water from the water system by pulling
the reservoir drain hose from its plug and return it
to the plug when drained.
19. Mix a solution of 4 ounces of ice machine scale
remover and 16 ounces of potable water. Use
this scale remover solution to washout the water
reservoir cover, ice discharge chute, ice chute
cover, ice delivery chute, storage bin cover and
inside of the ice storage bin. Also wash the sink,
drip tray, grill and Drain Basin and Manifold with
this solution. Pour half down the bin drain and
the rest into the sink / drip tray to ush out their
drains.and Drain Basin.
Sanitize now.
20. Create a solution of sanitizer by mixing 2 gallons
(8 liters) of clean warm potable water (105°-115°
F) with one 2 0z packet os SteraSheen Green
Label .
21. Pour the sanitizer solution into the reservoir until it
is full (level with the molded line on the side).
22. Reconnect electrical power.
23. Push the On/O button to make ice for 10
minutes. Add more sanitizer to the reservoir to
keep it full while making ice.
24. Push the On/o button to stop making ice.
25. Disconnect electrical power.
26. Remove the ice outlet cover, dispense rotor and
ice dispenser agitator from the bin. Wash them
with the sanitizer solution.
27. Wash all inside surfaces of the ice storage bin and
ice discharge chute with the sanitizer solution.
28. Wash the ice discharge chute cover, ice sweep,
metal area below the ice sweep and ice dispense
chute with the sanitizer solution.
29. Wash the sink, drip tray, grill and Drain Basin
and Manifold with the sanitizer solution. Pour
remaining sanitizer into the bin and sink. Do not
overll bin.
30. Drain sanitizer from ice making system by pulling
reservoir drain hose from plug and return hose to
plug when drained.
31. Loosen thumb screw holding water reservoir to
post and lower the water reservoir to the top of the
slot, retighten thumb screw.
32. Return the chute cover, dispense rotor and
agitator to the inside of the storage bin. Secure
with the original fasteners.
33. Return the ice dispense chute and water reservoir
cover to their original positions and secure them
with their original fasteners.
34. Reconnect water and electrical power to the
machine.
35. Push the On / O button to restart ice making.
36. Operate machine for 5 minutes and then push the
On / O button to stop ice making.
37. Pour 16 oz of warm (95
o
to 105
o
F.) potable water
into the bin. Repeat until the ice has been melted.
38. Return the dispense bin cover to the machine and
secure with the original screws.
39. Push the On / O button to resume ice making.
40. Return all panels to their normal positions and
secure with the original screws.
Ice
Sweep
Ice
Discharge
Chute
HID312, HID525 and HID540
Installation and User’s Manual
March 2015
Page 21
Bearing
Rotating Shaft -
Do NOT Touch
Other Maintenance
The auger in the ice making system is centered by
bearings at the top and bottom. It is also sealed from
leaking by a water seal at the bottom.
The bearings are permanently lubricated and need
no maintenance. The can be visually checked for
obvious wear or damage but there is no need to add
lubrication.
Auger motor bearings and the gear reducer are also
permanently lubricated and need no maintenance.
The bottom of the ice making system should be
checked for water leaks. Water draining from
the bottom is an indication of a water seal leak.
Immediate repair is required when a water seal leak is
discovered.
Caution: Moving parts hazard. Do not touch the
rotating shaft at any time.
HID312, HID525 and HID540
Installation and User’s Manual
September 2020
Page 22
Basic Troubleshooting
See the separate HID service manual for more advanced troubleshooting information.
Symptom Possible Cause Probable Correction
No ice is dispensed No ice in bin Unit in O mode. Remove upper front panel and
check controller code, push On/O button to restart.
No water to unit. Controller shows code 3. Restore
water supply.
No power to unit, power light on controller is o.
Restore power.
High pressure control opened. Controller shows
code 4, water interrupted to water cooled model.
Restore water and reset controller.
Ice level control sensing full bin falsely. Controller
shows b. Clean ice level control sensors.
Dispense motor not turning Remove upper front panel, check controller indicator
lights. Hold container in front of sensor or push ice
button, does the Ice Dispense Sensed light glow? If
no, sensor is not detecting the container or button
is not operating. If yes, does the Ice Dispense light
glow? If yes, push Dispense Ice button on controller.
Does the motor activate? If yes, go to next row. If
no, check for voltage at motor. If no voltage, replace
controller. If voltage at motor, replace motor.
Dispense motor working,
but ice in bin not moving
Agitator or rotor not turning, remove all ice and
inspect for damage to agitator and rotor.
No water is dispensed No water to unit. Restore water.
Water valve not opening Remove upper front panel, check controller indicator
lights. Hold container in front of sensor or push
water button, does the Water Dispense Sensed light
glow? If no, sensor is not detecting the container
or button is not operating. If yes, does the Water
Dispense light glow? If yes, push Dispense Water
button on controller. Does the water valve activate?
If no, check for voltage at valve. If no voltage,
replace controller. If voltage at valve, replace valve.
Water drips from spout May be normal A few drops per minute is normal.
Bin drain may be plugged. Check bin drain tube at basin.
Dispensed water is
cloudy, but clears up in a
few minutes
Air in the water This is normal and can vary depending upon how
much air is in the water. May be improved by
lowering water pressure to the unit.
Water leak near front Drip tray not in position Conrm drip tray is pushed all the way back and
touching the base.
Water lling drip tray Main drain plugged Remove splash panel and inspect basin for standing
water. Clear drain to and from the basin. If plugged
with mold/slime it would be recommended to use a
sanitizing agent to ush the drain line. To minimize
the risk of a clogged drain do not allow anything
other than water to go down the drain.
HID312, HID525 and HID540
Installation and User’s Manual
September 2020
Page 23
Controller Diagnostics
Code or Light Action Probable Cause Suggested Action
O
Unit manually switched o If desired, switch unit on.
F
Freeze mode None, unit is making ice.
b
Bin sensors sense bin full Check if bin is full.
E
Corrupted memory Replace controller
C
Clean mode Continue clean mode
d
Test mode None, allow unit to nish test
mode.
1
Auger motor rotated auger
backwards.
Replace auger motor. Check water
seal area for leaks, replace seal if
leaking.
2
Auger motor stalled or operating
slowly
Clean ice making system and retry.
3
No water in reservoir Restore water. If there is water,
is it too pure? Are sensor wires
connected?
4
High pressure cut out open Check fan motor on air cooled or
water supply on water cooled.
Water dispense sensed light
blinking
Container positioned in front of
water dispense sensor or button
pressed for more than 24 seconds
Normal, controller has a time limit
for dispensing. Remove container.
Water dispense light blinking
Ice dispense sensed light blinking Container positioned in front of ice
dispense sensor or button pressed
for more than 20 seconds.
Ice dispense light blinking
Status light is on Unit is in ice making mode Normal, may not be making ice if
bin is full
Time to Clean light is on Unit has not been cleaned for at
least 6 months
Clean unit
Water Dispensed Sensed light is
on
A container is in front of the sensor
or the water button is pressed.
Normal during water dispensing
Ice Dispensed Sensed light is on A container is in front of the sensor
or the ice button is pressed.
Normal during ice dispensing
Water Dispense light is on Water solenoid has been activated Normal during water dispensing
Ice Dispense light is on Bin drive motor has been activated Normal during ice dispensing
Auger light is on Auger motor is active Normal when making ice
Compressor light is on Compressor is active Normal when making ice
SCOTSMAN ICE SYSTEMS
101 Corporate Woods Parkway
Vernon Hills, IL 60061
800-726-8762
www.scotsman-ice.com
17-3492-01 Rev. B
