Specifications
MODEL CMA-180UC-3 INSTALLATION & OPERATION MANUAL Rev. 1.00 Page
2
CMA-180UC-3
WATER CONSUMPTION
PER RACK
.68 GAL. (2.57 L)
PER HOUR
19.0 GAL. (72.1 L)
OPERATING CYCLE
WASH TIME-SEC
99 99
RINSE TIME-SEC
11 11
DWELL TIME-SEC
10
10
TOTAL CYCLE
2 MIN.
2 MIN.
OPERATING CAPACITY
RACKS PER HOUR
28 28
WASH TANK CAPACITY
2.5 GAL.
(9.46 L)
PUMP CAPACITY
38 GPM
(144 LPM)
120°F (49°C)
140°F
(60°C)
½”
1.27cm
1”
2.54cm
WATER REQUIREMENTS
REQUIRED MINIMUM TEMP.
RECOMMENDED TEMP. *
WATER INLET
DRAIN CONNECTION
RINSE PRESSURE SET
20 PSI5 PSI
1.41 kg/cm
2
160°F Minimum
CYCLE TEMPERATURES
WASH
RINSE
180°F -195°F
(70°C)
(82°C/90°C)
FRAME DIMENSIONS
DEPTH
25”
(63.5 cm)
WIDTH
24”
(60.96 cm)
HEIGHT
33 ¼”
(84.45 cm)
MAX CLEARANCE FOR DISHES
14.5”
(36.8 cm)
ELECTRICAL RATING
208 VOLTS
1 PH—60 Hz
240 VOLTS
1 PH—60 Hz
30 AMPS 32 AMPS
BOOSTER HEATER
5.3 kW
6.5 kW
WASH TANK HEATER
2.2 kW
2.9 kW
THIS SYSTEM REQUIRES TWO POWER WIRES, NO NEUTRAL NEEDED. AN
ADDITIONAL THIRD WIRE MUST BE PROVIDED FOR MACHINE GROUND.
GFCI BREAKER IF REQUIRED.
SHIPPING WEIGHT
234#
(106 kg)
* For faster heat recovery.
** Plus 7 seconds load time.
METRIC
EQUIVALENT
WASH PUMP MOTOR
3/4 HP 3/4 HP
Specifications
MODEL CMA-180UC-3 INSTALLATION & OPERATION MANUAL Rev. 1.00 Page
3
Note: The required flowing water pressure to the dishwasher is 15-65 PSIG. If pressures higher than
65 PSIG are present, a pressure regulating valve must be installed in the water line to the dishwasher
(by others). If flowing pressure is lower than 15 psi, improper machine operation may result.
CMA-180UC-3 Operational Cycle
The CMA-180UC-3 Operational Cycle has a total cycle time of 2 minutes (120 seconds).
The steps listed below detail the individual functions that are executed during each
Operational Cycle.
1. With the machine powered up toggling the START switch begins a cycle.
a) Toggling the START switch energizes both the Cam Timer motor and the Instant Start
Relay. The Instant Start Relay latches ON the power to the Cam Timer motor so that
the START switch can be released a moment after it has been toggled without the Cam
Timer motor losing power.
b) After about 1.5 seconds the Cam Timer’s first cam—the Cam Timer Motor Cam—
latches ON the power to the Cam Timer motor and drops out the Instant Start Relay.
The Cam Timer motor continues to run for a total of 2 minutes, at which time it
switches OFF—resetting the Cam Timer—and waits for the next START command.
2. The Cam Timer’s third cam controls the Wash Pump. The Wash Pump comes ON about 3
seconds into the Operational Cycle and continues to run for 94 seconds. This 94-second
period is the Wash Cycle.
3. About 3 seconds after the Wash Cycle has completed the Cam Timer’s second cam, which
controls the Rinse Cycle, turns ON—energizing the Water Solenoid—and stays ON for 16
seconds. This 11-second period is the Rinse Cycle.
4. When the cam timer assembly approaches the final rinse portion of the cycle, the “Safe-T-
Temp” fifth micro switch will pause cam timer assembly if the booster heater has not
reached 180 degrees. Machine will remain in wash cycle mode until 180-degree rinse
temperature is reached, and at this time the cam timer will advance automatically into the
rinse cycle and dispense 180 degrees rinse water over the dishes.
5. The 4th cam controls the drain. The drain comes on before the Rinse Cycle ends and stays
on until the proper water level is reached.
6. Cam switches 6 and 7 control the detergent and rinse pumps respectively. They turn ON at
the beginning of the wash and rinse cycle respectively and run for a few seconds to provide
sufficient detergent and rinse aid. These cams can be adjusted as necessary for proper
chemical dosage. See section 4.1.1 Cam Adjustment
Note: Use only commercial-grade high temperature detergents and rinse additives recommended
by your chemical professional. Do not use detergents and rinse additives formulated for residential
dishwashers.
MODEL CMA-180UC-3 INSTALLATION & OPERATION MANUAL Rev. 1.00 Page
4
CMA-180UC-3 Installation Guidelines
Improper installation of this product may void the warranty on this machine. Please follow
these guidelines for recommended installation and to ensure the warranty of this model is
authorized by CMA Dishmachines.
Dishmachine Installation Requirements
1. Machine must be level. Adjust leveling feet to accommodate uneven floor
surfaces.
2. Stand pipe drain height should not exceed maximum height of 22”.
Installation with air gap is recommended.
3. Approximately 4-feet of ¾” flexible conduit with power leads (L-1, L-2
and Ground) extending out of the conduit are provided for easily
connecting the power at installation. CMA recommends a minimum 40-amp
dedicated circuit, you should consult your local building code
requirements for proper breaker size.
Customer Notice
Getting Started
MODEL CMA-180UC-3 INSTALLATION & OPERATION MANUAL Rev. 1.00 Page
5
Introduction to CMA-180UC-3
The CMA-180UC-3 is a hot water sanitizing, single rack, under-counter dishmachine. It is a
standalone machine featuring a self-contained booster heater. The only external connections
necessary are power supply, water supply and drainpipe. The machine uses re-circulated wash
water and fresh water final-rinse.
Operation of the CMA-180UC-3 is extremely user friendly. To initially fill the machine each day,
push the Power switch to the "ON" position. The machine will automatically fill to the correct level.
The wash tank heater will maintain the wash water temperature at 160°F minimum. The booster
heater will produce a minimum of 180°F final rinse water each cycle.
The supply water to the CMA-180UC-3 must be a minimum of 120°F at 24 PSI (Pounds per
Square Inch) with a 6 GPM (Gallons per Minute) flow rate and 60 GPH (Gallons per Hour)
recovery rate. The pipe supplying the water must be ½” minimum. The plumbing connection is
located at the back of the machine.
This manual is structured to provide a complete reference guide to the CMA-180UC-3. It is
presented in a manner that all users will be able to comprehend and use as an effective tool in
supporting the operation and maintenance of the dishmachine. The first section explains how the
machine is packaged and what to look for when receiving the machine.
After unpacking the machine, this manual explains how to install and set up the machine for use.
Requirements are given for plumbing, wiring, and space considerations. These attributes of the
machine are always taken into consideration by our well-trained sales representatives prior to the
order being placed. In the manual, guidance is also given for installation to ensure that the
machine will be able to run at optimum conditions. The Operation Section of the manual may be
used for instruction and procedures when required. We make this portion of the manual easy to
understand so that all levels of operators may be able to read and comprehend the operation of
the machine. The function of the machine itself is mostly automatic and takes little training to put
into full operation. The Operation Section also includes diagnostic considerations for the machine
should problems occur.
DISCLAIMERS
CMA expressly disclaims any and all warranties, express or implied, relating to the installation of any and all CMA equipment that is installed by chemical dealers, contracted servicers or third
party servicers to CMA equipment. If the installation instructions are not followed exactly (to the letter), or, if any person or company conducting the installation of the CMA equipment, revise the
installation procedures or alter the instructions in any manner, the CMA warranty becomes void. If, due to the improper installation of CMA equipment, this equipment ceases to operate properly or
affects other parts of the CMA dishwashing equipment, in that the other parts become defective, the CMA warranty becomes void. CMA will not be liable or responsible or warrant CMA
equipment, due to improper installation of any CMA model dishwasher.
CMA does NOT endorse “Tankless On-Demand” water heaters for use on CMA Dishmachine products. On most applications, the
volume of hot water required for commercial dishmachines exceeds the capacity of these types of heating sources. You will find
that most, if not all, commercial dishmachines have been programmed with auto-filling features that require quick filling, with a
designated limited time.
CMA DOES endorse, and highly recommends, the standard “tank” style water heaters, sized properly to handle each particular
facility with their water heating requirements. A “tank” style water heater stores and supplies a large capacity of preheated water
before providing hot water to the dishmachine. To meet required health codes, there must be a reliable and consistent flow of
adequate hot water supplied to the dishmachine. If the facilities’ “tank” style water heater is marginal in size, CMA recommends
installing a proper size Hatco Booster Heater, a CMA’s E-Temp 40 or 70-degree-rise Booster Heater (that can be installed on CMA
Conveyors), or a CMA Temp-Sure Booster Heater (for door and undercounter dishmachines). All are designed to adequately
achieve results.
Warning: cancer and reproductive harm – www.P65Warnings.ca.gov
Getting Started
MODEL CMA-180UC-3 INSTALLATION & OPERATION MANUAL Rev. 1.00 Page
6
Receiving and Installation
The dishwasher is shipped from the factory in a corrugated box on a wooden pallet. The
installation guidelines give a systematic procedure for setting up the machine.
Start by removing the packaging material. Unwrap the machine and check for the following
component parts:
The Wash Tank Scrap Screen is shipped inside the wash cavity of the machine. This screen must
be in place during operation. It has been designed to perform two basic functions:
1. Strain water that is circulating through the spray arms and pump assembly.
2. A basket to catch broken glass, or heavy solids that may plug the impeller.
Set the machine in place, and level from side-to-side and front-to-back to prevent door leaks.
Steam generated from normal operation may escape from door. Wood, laminates, veneers, etc.
are unsuitable materials for use in areas exposed to dishwasher steam and detergents. Stainless
steel or other moisture-resistant shields are recommended for surfaces adjacent to sides and
tops of under counter dishwashers.
Electrical
1
Prior to installation make sure the electrical supply is compatible with the specifications on the
machines data plate.
Single-phase 208/240 volt, 60 Hz dedicated circuit should be used to supply electrical energy to
the CMA-180UC-3 dishwasher (see specification sheet page 2). This system requires two power
wires. An additional third wire must be provided for ground. Approximately 4-feet of ¾” flexible
conduit with power leads (L-1, L-2 and Ground) extending out of the conduit are provided for
easily connecting the power at installation. The power connection must be located such that
there is sufficient length of the flexible conduit remaining to permit the machine to be moved for
cleaning.
WARNING: Electrical and grounding connections must comply with the applicable portions of the
National Electrical Code and/or other local electrical codes.
Note: For supply connections, use copper wire only rated at 90 degree C minimum.
Plumbing
2
Notice to Plumber: The plumber connecting this machine is responsible for making certain that
the water lines are THOROUGHLY FLUSHED OUT BEFORE connecting to the dishwasher.
The machine is equipped with a ½” NPT connection located at the lower left-hand corner (facing
the back) of the machine. A 140°F water line should be plumbed to this point (see specification
sheet page 2). The water line used must be of sufficient length and flexibility to permit the
machine to be moved for cleaning.
The supply water to the CMA-180UC-3 must be a minimum of 120°F at 24 PSI (Pounds per
Square Inch) with a 6 GPM (Gallons per Minute) flow rate and 60 GPH (Gallons per Hour)
recovery rate. The pipe supplying the water must be ½” minimum. The plumbing connection is
located at the back of the machine. (See specification sheet on page 2).
Note: high iron levels in the water supply can cause staining and may require an iron filter. High
chlorine levels in the water supply can cause pitting and may require a chloride removal system.
If an inspection of the dishwasher or booster heater reveals lime buildup after the equipment has
been in service, water treatment is recommended. If water softener is already in place, ensure
there is a sufficient level of salt.
1,2
All electrical and plumbing connections must be made by a qualified person who will comply with
all available Federal, State, and Local Health, Electrical, Plumbing and Safety codes
Getting Started
MODEL CMA-180UC-3 INSTALLATION & OPERATION MANUAL Rev. 1.00 Page
7
Warning: If water pressure exceeds 50 PSI, pressure reducing valve (PRV) is recommended.
The CMA-180UC-3 is manufactured with a pumped drain. The drain pump can not be removed.
Caution: CMA recommends utilizing a water softening system to maintain water hardness
measurements of 3.5 gpg (grains per gallon) or less. This will assure maximum results
and optimum operation of the dishmachine.
Detergent And Rinse Chemical Dispenser
The built-in chemical dispenser assembly has easy access for chemical settings on the cam
timer.
Note: Use only commercial-grade detergents and rinse aids recommended by your chemical
professional. Do not use detergents and rinse aids formulated for residential dishwashers.
1
All electrical and plumbing connections must be made by a qualified person who will comply with
all available Federal, State, and Local Health, Electrical, Plumbing and Safety codes
Safe-T-Temp Feature
The CMA “Safe-T-Temp” feature assures the final rinse cycle is always at a consistent minimum
of 180 degrees.
How it works: the “Safe-T-Temp” function operates off the 5
th
cam (labeled “Safe-T-Temp”) on
the timer assembly. When the cam timer assembly completes the wash cycle, and approaches
the final rinse portion of the cycle, the “Safe-T-Temp” micro switch will drop into the cam slot and
pause cam timer assembly if the booster heater has not reached 180 degrees. Machine will
remain in wash cycle mode until 180 degree rinse temperature is met, and at this time the cam
timer will advance automatically into the rinse cycle and dispense 180 degrees rinse water over
the dishes.
Getting Started
MODEL CMA-180UC-3 INSTALLATION & OPERATION MANUAL Rev. 1.00 Page
8
Installers Checklist
Dishmachine checked for concealed damage
Hot water supply is 120° F (60 C) — minimum
Incoming water supply line is ½” — minimum
Incoming water supply is 6 GPM minimum at 24 PSI
Supply circuit breaker for machine is properly sized (40 amp)
Service voltage and phase type are correct to machine data plate
Drain hose is installed with air gap (discharge 1” above drain)
Dishmachine is properly grounded
Dishmachine is properly leveled
Machine circuit breaker is labeled “DISHWASHER”
Machine has been “hard-wired” with correctly sized wire
Operation
Initial Setup
Rinse and Wash Temperatures
3
1. Turn the Power switch to the "ON" position.
2. After the machine has warmed up for 10-15 minutes, note the wash
temperature. The wash temperature must be 160°F minimum. The
rinse temperature must be 180°F minimum
3
.
3. The wash tank digital thermostat has been factory set to 160°F, no
adjustment should be necessary. If necessary adjust the wash tank
thermostat up using the ^ button. If necessary, adjust the booster
temperatures by removing the lower front panel and turning the booster
heater thermostat adjustments clockwise to increase, counterclockwise
to decrease.
Post Instructions
1. Install wall chart and instruct machine operator on proper cleaning and
operation of the CMA-180UC-3.
Startup Procedures
3
Rinse cycle temperature must be observed during a rinse cycle while the machine is in operation.
MODEL CMA-180UC-3 INSTALLATION & OPERATION MANUAL Rev. 1.00 Page
9
1. Open the door of the machine and check that the scrap screen is in place, and that
the spray arms and end plugs are secure.
2. Close the door of the machine and press the Power switch to the "ON" position.
3. The machine will automatically fill to the correct level. The fill timer in the upper
control drawer may be adjusted as needed.
4. Allow the machine 10-15 minutes to heat up, 160°F on the "WASH" temperature
display before continuing.
5. Press the rocker switch marked “START” – the machine will automatically begin its
cycle.
6. Check machine’s operating temperatures — Adjust thermostats if necessary.
7. At the end of the meal period, drain the machine by pressing and holding the rocker
switch marked “DRAIN” till empty. Clean the wash tank screen and scrap tray
screen. Remove and clean the spray arms. (See wall chart instructions).
8. To prime chemical dispensers press and hold down the prime switch until product is
discharging into machine.
9. Drain machine and power machine off at end of day.
DISHMACHINES
OPERATING AND CLEANING INSTRUCTIONS
FOR MODEL CMA-180UC-3
INSTRUCCIONES DE LIMPIEZA Y
OPERACION DE MODELO CMA-180UC-3
Drain machine by pressing drain
button.
Para vaciar la maqina: Oprima el
boton de drenaje.
If spray arms are clogged remove by
turning bearings counter clockwise.
Si los brazos de rociado se tapan,
sera necesario sacarlos
desenroscandolos para el lado
izquierdo.
Inspect top and bottom spray arm jets daily.
Use toothpick and push trash into spray
arm. Remove end plugs and flush with water.
Use un palillo para abrir los orificios.
Destapar por las puntas, removiendo el
tapon y enjuagelos con agua.
CMA PN: 06265.15
CAUTION: DO NOT START until
wash temperature reads 160°.
No empiece el ciclo hasta que
la temperatura sea 160°.
Hand remove and
thoroughly clean scrap
screen under faucet or
Pre-Rinse Hose every
shift.
Remueva el
filtro de el interior de
el tanque de
desperdicios. Lave el
filtro con el rociador
de agua cada turno.
Replace all scrap screen back
into position.
Regrese el
filtro a su
lugar.
Start machine by pushing start button.
Para empezar la maquina,
cierre la puerta y
oprima el boton
de encendido.
3
5
Turn off power.
4
Apague La Maquina
6
78
2
1
O
F
WASH TEMP 160
0
160
O
Turn on power and machine will fill
automatically to correct level.
Prenda la maquina y automaticamente va
a llenar al nivel correcto.
N/C
L1 L2 L3
T3 22
21
A2
A1
T2T1
N/C
L1 L2 L3
T3 22
21
A2
A1
T2T1
WATER TANK
HEATER
THERMOSTAT
THERMOSTAT
WASH TANK
OVERLOAD
SWITCH
BOOSTER
HEATER
WASH PUMP
CONTACTOR
WATER
SOLENOID
VALV E
DRAIN
PUMP
HEATER
CONTACTOR
BOOSTER
HEATER
CONTACTOR
RINSE RELAY
DRAIN SWITCH
TO FILL
RELAY
RUN SIGNAL
START SWITCH
DOOR SAFETY SWITCH
WATER SOLENOID
110V V AC SWITCHED
110 V AC
110 V AC
DETERGENT
TO UPPER
COMPONENT TRAY
CHASSIS GROUND
POWER BLOCK
DELIME
NORMAL
FILL
DETERGENT
RINSE
START
RINSE
WASH
DRAIN PUMP
DET
RINSE
PUMP MOTOR
GROUND
RINSE
L1 L2
CMA 180UC-3 ELECTRICAL DIAGRAM
POWER BOX
WASH HEATER
PRESSURE
SWITCH
OVERLOAD
SWITCH
1 2
3
1
2
3
FILL / DRAIN
PRESSURE
SWITCH
RINSE
DRAIN
SAF T TEMP
208-240V
L1 L2
G
120V
120V
2
3 4
5 6
7
8
1
NC
NO
C
8
2
3 4
5 6
7
8
1 NC
NO
C
2
3 4
5 6
7
8
1
NC
NO
C
RELAY
FILL & DRAIN
FILL TIMER
FILL & RINSE
RELAY
START RELAY
DIGITAL THERMOMETER
TRANSFORMER 220V/12V
WASH TANK
THERMOMETER
FINAL RINSE
THERMOMETER DETERGENTRINSE
POWER DRAIN START
PRIME SWITCH
SAFETY
SWITCH
TEMPERATURE
SENSORS
J7 J6 J5 J1 J2 J3 J4 J10 J9 J8
DRAIN PUMP
RINSE
110 VAC
FILL/DRAIN
LEVEL SENSOR
DETERGENT
RUN SIGNAL
START SWITCH
DOOR SAFETY SWITCH
WATER SOLENOID
110 VAC SWITCHED
110 VAC
UPPER
COMPONENT TRAY
GROUND
DETERGENT
RINSE ADDITIVE
180UC-3 CONTROL DRAWER
Black W/ Yellow Stripe
Yellow W/ Black Stripe
3
11 1
RINSE
