Owner’s Manual
Keep with machine for reference
MODEL CMA-180UC
INSTALLATION & OPERATION
Rev 1.15
CMA DISHMACHINES
12700 KNOTT AVENUE
GARDEN GROVE, CALIFORNIA 92841
800-854-6417
FAX 714-895-2141
www.cmadishmachines.com
TABLE OF CONTENTS
MODEL CMA-180UC
1. SPECIFICATIONS ........................................................................................ 2
1.1. CMA-180UC......................................................................................................................... 2
1.2. CMA-180UC OPERATIONAL CYCLE...................................................................................... 3
2. GETTING STARTED..................................................................................... 4
2.1. INTRODUCTION TO CMA-180UC........................................................................................... 4
2.2. RECEIVING AND INSTALLATION.............................................................................................. 5
2.2.1. Electrical ....................................................................................................................... 5
2.2.2. Plumbing........................................................................................................................5
2.2.3. NOVA Detergent and Rinse Dispenser (Optional)........................................................ 6
2.2.4. Safe Ttemp Feature........................................................................................................ 8
2.2.5. Water Tempering Kit ..................................................................................................... 9
2.2.6. Booster Heater Setup...................................................................................................10
2.2.7. Installers Checklist ...................................................................................................... 10
3. OPERATION............................................................................................... 11
3.1. INITIAL SETUP ...................................................................................................................... 11
3.1.1. Dema Valve and Dema Flow Disc (New Models)....................................................... 11
3.1.2. Rinse Pressure Regulator (Old Models Prior January 2008)......................................11
3.1.3. Rinse and Wash Temperatures .................................................................................... 11
3.1.4. Post Instructions.......................................................................................................... 11
3.2. STARTUP PROCEDURES......................................................................................................... 11
3.3. OPERATING AND CLEANING INSTRUCTIONS ......................................................................... 12
3.4. PREVENTIVE MAINTENANCE CHART .................................................................................... 13
3.5. QUICK SERVICE GUIDE.......................................................................................................... 14
3.6. TROUBLESHOOTING.............................................................................................................. 15
4. PARTS KIT ................................................................................................. 18
4.1. INITIAL PARTS KIT (P/N 1100.66)........................................................................................18
4.2. OPTIONAL DRAIN PUMP KIT................................................................................................. 19
4.3. OPTIONAL DRAIN PUMP—INSTALLATION INSTRUCTIONS.................................................... 20
5. CUSTOMER NOTICE ................................................................................. 22
6. ELECTRICAL DIAGRAM............................................................................ 23
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1. Specifications
1.1. CMA-180UC
METRIC
EQUIVALENT
WATER CONSUMPTION
PER RACK .86 GAL. (3.25 L)
PER HOUR 20.6 GAL. (77.8 L)
OPERATING CYCLE
WASH TIME-SEC 94 94
RINSE TIME-SEC 16 16
DWELL TIME-SEC 10 10
TOTAL CYCLE 2 MIN. 2 MIN.
OPERATING CAPACITY
RACKS PER HOUR 30 30
WASH TANK CAPACITY 2.5 GAL. (9.46 L)
PUMP CAPACITY 38 GPM (144 LPM)
WATER REQUIREMENTS
140°F (60°C)
WATER INLET ½” 1.27cm
DRAIN CONNECTION 1” 2.54cm
RINSE PRESSURE SET
CYCLE TEMPERATURES
20 PSI±5 PSI
1.41 kg/cm
2
WASH-°F 150°F -160°F (65.5°C/71°C
RINSE-°F 180°F -195°F (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
33 AMPS 35 AMPS
230 VOLTS
1 PH—60 Hz
BOOSTER HEATER 5.3 kW 6.5 kW
WASH PUMP MOTOR ¾ HP ¾ HP
THIS SYSTEM REQUIRES THREE POWER WIRES, WHICH
INCLUDES A CURRENT CARRYING NEUTRAL. AN ADDITIONAL
FOURTH WIRE MUST BE PROVIDED FOR MACHINE GROUND.
SHIPPING WEIGHT
APPROXIMATE 234# (106 kg)
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
2
1.2. CMA-180UC Operational Cycle
The CMA-180UC Operational Cycle has a total cycle time of 2 minutes (120 seconds). The
Timing Diagram and the steps listed below detail the individual functions that are executed
during each Operational Cycle.
Seconds: 0 10 20 30 40 50 60 70 80 90 100 110 120
Instant
Start Relay
Cam Timer
Motor Cam
Rinse Cycle
Cam
Wash Cycle
Cam
Optional Drain
Pump Cam
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. At the same time that the Wash Pump comes ON the Cam Timer’s fourth cam powers ON
the Optional Drain Pump—if one is present—and keeps it running for about 7 seconds
before powering OFF. This cam turns ON again midway through the Rinse Cycle and
stays ON for 10 seconds, turning OFF 2 seconds after the Rinse Cycle has completed.
4. 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 16-second period is the Rinse Cycle.
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
3
Getting Started
2. Getting Started
2.1. Introduction to CMA-180UC
The CMA-180UC is a hot water sanitizing, single rack, under-coun ter dishmachine. It is a
standalone machine featuring a self-contained booster heater. The only external connections
necessary are power supply, water supply, drainpipe, and optional chemical dispensers. The
machine uses re-circulated wash water and fresh water final-rinse.
Operation of the CMA-180UC is extremely user friendly. To initially fill the machine each day,
push the switch marked “FILL”. The machine is full when water begins to flow into the scrap tray.
The booster tank heater will maintain the wash water temperature at 155°F. The booster heater
will produce a minimum of 180°F final rinse water each cycle.
The supply water to the CMA-180UC must be a minimum of 140°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
The drain is a 1" barbed fitting on the back of the machine for easy attachment of your drain
hose.
The machine retains the features of the standard CMA-180 Series in that it has a scrap tray and
the manner in which the tank is filled ensures that the dishes are always rinsed with fresh water
instead of re-circulated water. The CMA-180UC is the first under-counter dishmachine of its kind
to discharge soil from the wash tank into a scrap tray outside of the wash chamber. This feature
keeps the wash water much cleaner over long periods of time. The scrap tray may be emptied on
a periodic basis without interruption of the flow of work, thereby providing a much cleaner
environment for the wash and rinse cycle. There are also enhancements that can be chosen
when required such as drain pump kits and other accessories. Refer to Section
parts list and accessories available for the machine.
This manual is structured to provide a complete reference guide to the CMA-180UC. 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
includes diagnostic considerations for the machine when problems occur.
The next section of the manual is the
the machine.
We are committed to providing the best machines and customer service in the food industry and
your feedback is welcome.
Parts .This section has the parts lists and wiring diagram for
2).
4 “Parts ” for the
Operation Section also
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
4
2.2. 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.
2.2.1. Electrical1
A 50-amp, single-phase 230 volt, 60 Hz dedicated circuit should be used to supply electrical
energy to the CMA-180UC dishwasher (see specification sheet page
three power wires, which include a current carrying neutral. An additional fourth wire must be
provided for ground. CMA and local codes require the CMA-180UC to be hardwired using #8
AWG (90°C) copper wire (minimum). Approximately 4-feet of ¾” flexible conduit with power leads
(L-1, L-2, Neutral 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.
2.2.2. Plumbing2
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
machine to be moved for cleaning.
Important: New machines equipped with Dema Valve and Dema Flow Disc requires an
unrestricted water supply line minimum of ½”.
The supply water to the CMA-180UC must be a minimum of 140°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
The CMA-180UC may be supplied with an optional drain pump for elevated drains. For floor
gravity drain applications the drain pump should not be used and a good commercial grade hose
needs to be connected to the discharge side of the diverter valve (drain valve) and run to the floor
drain. If removing a drain pump, safe-end (insulate electrically) the white and purple wires and
secure them out of the way. If a drain pump is used with a floor drain, the drain hose must rise 12
to 16” before dropping to the floor drain (to reduce any chance of the pump cavitations).
2). The water line used must be of sufficient length and flexibility to permit the
2).
2). This system requires
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
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
5
2.2.3. NOVA Detergent and Rinse Dispenser (Optional)1.
The NOVA Detergent and Rinse Dispenser has its own reference manual.
Familiarize yourself with the dispenser’s reference manual before proceeding with
installation.
1. The NOVA dispenser is pre-wired with a multi-conductor electrical cable that is to
be run through a conduit to the power block inside the control panel drawer. Use
a ½” watertight conduit meeting all local and national codes. A conduit fitting is
present on the bottom of the dispenser where the power cable exits. A mounting
plate to receive the ½” conduit is provided on the top right-hand corner (facing
the back) of the machine.
i. Run an appropriate length of ½” conduit from your dispenser to the mounting
plate where it will be secured. The conduit needs to be of sufficient length
and flexibility to permit the machine to be moved for cleaning without having
to disconnect any wiring.
ii. Run your dispenser wires through the conduit and through the enclosed area
across the top of the machine and then feed them through the access hole
provided in the back of the control panel drawer.
iii. With the machine’s power “OFF”, connect your deterg ent and rinse dispenser
wires to the power block supplied and labeled (“DISPENSER 110V - 3 AMPS
MAX”) inside the control panel drawer. The table that follows lists the
function of each conductor of the multi-conductor electrical cable.
Wire Colors Circuit Voltage Function
Gray/Violet 90 VAC-130 VAC 50/60 Hz Main AC Power
Black 90 VAC-130 VAC 50/60 Hz Main AC Power
Brown
Yellow 90 VAC-130 VAC 50/60 Hz Detergent Signal
White/Yellow 90 VAC-130 VAC 50/60 Hz Detergent Signal
Violet 90 VAC -130 VAC 50/60 Hz Rinse Signal
White/Violet 90 VAC -130 VAC 50/60 Hz Rinse Signal
The individual conductors need to be connected as shown in Figure 2.2.3
and as described on next page.
No Connection. Insulate this wire!
This wire is LIVE!
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
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
6
(
)
Brown (LIVE) wire
Multi-conductor cable
Detergent Signal wires
(Red terminals)
Black (Main Power)
Note: In Figure 2.2.3 the machine’s wire harness was left out of the back of the
power block to more clearly show the dispenser wires.
2. Remove the plug from the mixing chamber located by the vacuum breaker on the
back of machine; and install the rinse injection fitting (supplied with your
dispenser). See Figure 2.2.4.
3. A 7/8" detergent injection hole is provided in the back of the wash tank. Remove
the S.S. plug and install the detergent fitting (supplied with your dispenser).
4. The final step of installing the CMA supplied Detergent and Rinse Dispenser is
programming it to your specific application. The reference manual supplied with
the dispenser shows you how to program it.
Keep in mind while reading the reference manual that the CMA-180UC
operates in “probe-less” mode. (This mode is selected by setting a value of
“2” in screen 21).
Screen 22 must be set to “1” (Door).
Rinse Signal wires
(Blue terminals)
Gray/Violet
(Main Power Neutral)
Same terminal as rinse neutral
Note: Machine Neutral
(White wires)
Figure 2.2.3
Figure 2.2.4.
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
7
2.2.4. Safe Ttemp Feature
The CMA “SafeTtemp” feature assures the final rinse cycle is always at a consistent minimum of
180 degrees.
How it works: the “SafeTt emp” fun ction operates off the 5
timer assembly. When the cam timer assembly completes the wash cycle, and approaches the
final rinse portion of the cycle, the “SafeTtemp” 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.
Note: if Safe Ttemp cam is not to be used, it becomes a spare cam.
CMA -180“SafeTtemp” Installation Instructions:
1) Remove the 4cam timer assembly (note wire colors and wire placement for all 4cam
timer micro switches) and install 5cam timer in its place.
2) Place all wires removed from 4cam timer assembly in exact position
assembly.
3) The cam timer motor receives (1) yellow wire and (1) white wire (re-connect the yellow
wire only from dishmachine harness to the motor).
4) The “SafeTtemp” 5 cam timer assembly kit includes a two white harness – connect white
wire with female bullet connector to the timer motor, stripped end to #22/NC on contactor,
and spade end to center terminal 5
th
micro switch.
5) Connect white wire with male bullet connector from the kit to the white wire with female
bullet connector coming from dishmachine harness, stripped end to #21/NC on contactor,
and spade end to top terminal on 5
th
micro switch.
th
cam (labeled “SafeTtemp”) on the
on 5cam timer
Female bullet
connector
Male bullet
connector
L1 L2 L3 A1
HEATER CONTACTOR
T1 T2 T3 A2
SafeTtemp
harness
21
N/C
22
Dishmachine
harness
Female bullet
connector
Male bullet
connector
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
8
2.2.5. Water Tempering Kit
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
9
2.2.6. Booster Heater Setup
The booster tank must be filled with water before the heating element is energized.
For this reason the “High Limit Switch” has intentionally been activated at the factory
and will require resetting before the heating element will turn on.
Follow the procedure below to complete the initial installation:
1. Close the door on the machine.
2. Turn the Power switch to the "ON" position.
3. Hold the “FILL” switch in until water overflows into the scrap tray.
4. Turn the Power switch to the "OFF" position.
5. Connect blue wire with disconnect, identified by red tag, to the High Limit
Switch which is located behind the thermostat behind the front kick panel.
2.2.7. Installers Checklist
Dishmachine checked for concealed damage
Hot water supply is 140° 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 (50 amp)
Service voltage and phase type are correct to machine data plate
If drain pump is used, drain hose rises 12 to 16” before dropping to drain
Drain hose is installed with air gap (discharge 1” above drain)
Optional detergent and rinse dispenser (if present) is properly installed
Dishmachine is properly grounded
Dishmachine is properly leveled
Machine circuit breaker is labeled “DISHWASHER”
Machine has been “hard-wired” with correctly sized wire
Booster tank has been filled with water (before High Limit Switch is reset)
High Limit Switch for heater has been reset (after Booster Tank has been filled)
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
10
3. Operation
3.1. Initial Setup
3.1.1. Dema Valve and Dema Flow Disc (New Models).
New Dema Valve made of stainless steel is more compatible with various water
conditions. Dema Flow Disc has been placed on the exit side of the water valve.
The Flow Disc reduces pressure to the standard recommended 20 PSI.
3.1.2. Rinse Pressure Regulator (Old Models Prior January 2008).
The CMA-180UC requires a supply water input pressure of 24 PSI minimum. This
pressure is then reduced by the supply water regulator. Use the following
procedure to adjust the rinse pressure to 20 PSI:
1. Close the door on the machine.
2. Turn the Power switch to the "ON" position.
3. While holding the “FILL” switch—to activate the water solenoid—adjust the
pressure regulator until the gauge reads 20 PSI. (Regulator is located
behind the front kick panel).
Operation
3.1.3. Rinse and Wash Temperatures
1. Turn the Power switch to the "ON" position.
2. After the machine has warmed up for about ten-minutes, note the wash and
rinse temperatures. The wash temperature must be 155°F minimum. The
rinse temperature must be 180°F minimum
temperatures by removing the front kick panel and turning the thermostat
adjustment clockwise to increase, counterclockwise to decrease. This one
adjustment controls both temperatures.
3
. If necessary, adjust the
3.1.4. Post Instructions
1. Install wall chart and instruct machine operator on proper cleaning and
operation of the CMA-180UC.
3.2. Startup Procedures
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 turn the Power switch to the "ON" position.
3. Hold the fill button about 25 seconds or until the water overflows into the scrap tray.
4. Once the water is filled to the proper level, press the rocker switch marked “START”
– the machine will automatically begin its cycle.
5. Check machine’s operating temperatures — Adjust if necessary. See section
Rinse and Wash Temperatures.
6. At the end of the wash period, drain the machine by pushing the rocker switch
marked “DRAIN”. Clean the wash tank screen and scrap tray screen. Remove and
clean the spray arms. (See wall chart instructions).
3.1.3
3
Rinse cycle temperature must be observed during a rinse cycle while the machine is in operation.
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
11
3.3. Operating and Cleaning Instructions
Operation
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
12
3.4. Preventive Maintenance Chart
Operation
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
13
Operation
3.5. Quick service guide
MODEL: CMA 180UC HIGH TEMP UNDER COUNTER
TECHNICAL ISSUE CAUSE SOLUTION
Scrap trap over flows
Obstruction in drain hose Check hose & clean
Scrap exit screen Clean exit screen
Faulty drain pump Replace pump, P/N 15503.00
Machine not level Adjust machine legs to level
Machine is leaning forward Adjust machine legs to level
Door leaks Wash arm end cap missing Replace end cap, P/N 00308.20
Door gasket Replace gasket, P/N 14506.60
Thermometer failure Faulty temperature sensing wire Correct, replace, P/N 03202.66
Faulty temperature sensing unit Replace unit, P/N 03203.00
Faulty transformer Replace transformer, P/N 03202.60
Scaled heating element Clean scale from heater
Rinse water temperature low /high
Loose lead connections Check and crimp connectors
Pump motor not running
Faulty contactor Replace contactor, P/N 15504.00
Faulty wash pump motor Replace wash pump motor, P/N 00201.00
Pump motor runs continuously
Faulty contactor Replace contactor, P/N015504.00
Low water pressure at the final rinse Clogged final rinse spray jets Clean jets
Scrap trap overflows over night Faulty water solenoid diaphragm Clean or replace diaphragm, P/N 00706.00
Low wash or rinse water temp. Check temperature settings
Poor cleaning results Wash arm bearing or jets Clean bearing and arm jets
Rinse arm bearing or jets Clean bearing and arm jets
Wash tank will not drain. Drain valve not operating Check power to drain valve
Drain valve faulty Replace Drain valve, P/N 04103.00
Pressure regulator is not set properly Set regulator to 18-20 psi
Faulty rinse micro switch Replace micro switch, P/N 00411.00
Drain hose elevated too high Must be lowered to goose neck level
Loose wire at display, board or
transformer
Booster heater’s thermostat not
properly set
Incoming water temperature to
booster heater below 140 F
Faulty # 3 micro switch Replace micro switch, P/N 00411.00
Faulty # 3 micro switch Replace micro switch, P/N 00411.00
Water regulator not adjusted properly Adjust regulator to 18-20 PSI
Missing final rinse spray end cap Replace end cap, P/N 00308.17
Low incoming water pressure from
facility
Tank discharge screen dirty Clean screen
Secure connectors
Adjust thermostat
Adjust external water heater in the facility
Increase pressure to 18-20 psi
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
14
Operation
3.6. Troubleshooting
PROBLEM LIKELY CAUSE SOLUTION
Power off at circuit breaker Reset circuit breaker Machine inoperative
Defective power switch Replace power switch
P/N: 15521.50
Motor inoperative
Motor runs with door open
Heater (no heat)
Heater (never turns off)
Door is open Close door
Control panel is pulled out Secure control panel
Defective reed switch Replace reed switch
P/N: 00557.55
Defective timer assembly Replace timer assembly*
P/N: 14408.80
Defective pump motor contactor Replace contactor
P/N: 15504.00
Defective motor Replace motor
P/N: 00201.66
Defective reed switch Replace reed switch
P/N: 00557.55
Defective pump motor contactor Replace contactor
P/N: 15504.00
High limit switch opened or
defective
Reset or replace switch
P/N: 17523.51
Defective thermostat Replace thermostat
P/N: 13417.89
Defective heater contactor Replace heater contactor
P/N: 15504.50
Defective heater Replace heater
P/N: 15517.00
Defective thermostat Replace thermostat
P/N: 13417.89
Defective heater contactor Replace heater contactor
P/N: 15504.50
*The timer assembly motor (P/N: 00501.00) or micro switches (P/N: 00411.00) can be replaced
independently if that’s the only component that’s failed.
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
15
Operation
PROBLEM LIKELY CAUSE SOLUTION
Low heat during operation
Low rinse water pressure
Regulator at maximum but
rinse pressure still low
Low rinse water flow
Low incoming water temperature
(below 140° F)
Turn up supply water heater
Insulate supply water pipe
Thermostat out of adjustment Adjust thermostat
Cold water mixing with supply
Isolate hot water from cold
water
Defective heater Replace heater
P/N: 15517.00
Pressure regulator out of
Adjust pressure regulator
adjustment
Defective pressure gauge (actual
pressure is okay)
Replace pressure gauge
P/N: 13605.45
Insufficient water supply flow Supply larger supply line
Defective water solenoid valve Replace water solenoid valve
P/N: 03603.10
Low rinse water pressure
See “Low rinse water
pressure” in
PROBLEM
column
Limed up rinse arm spray nozzles De-lime rinse arm nozzles
No rinse water flow
Rinse water runs with door
open
Water overflows scrap tray
onto floor
Defective water solenoid valve Replace water solenoid valve
P/N: 03603.10
Defective (Rinse Relay) ice cube
relay
Replace ice cube relay
P/N: 00631.00
Defective reed switch Replace reed switch
P/N: 00557.55
Drain hose is kinked Un-kink d rain hose
Drain hose is not properly
elevated before dropping to drain
(if drain pump is used)
Elevate drain hose 12 to 16”
above pump before dropping
to drain
Defective timer assembly Replace timer assembly*
P/N: 14408.80
With power on, activating
start switch does not begin
cycle
Defective drain pump
(if drain pump is used)
Defective start switch (cycle light
will not light either)
Defective timer assembly Replace timer assembly*
Replace drain pump
P/N: 15503.00
Replace start switch
P/N: 15521.00
P/N: 14408.80
*The timer assembly motor (P/N: 00501.00) or micro switches (P/N: 00411.00) can be replaced
independently if that’s the only component that’s failed.
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
16
Operation
PROBLEM LIKELY CAUSE SOLUTION
Start switch requires > 1
second activation to run
cycle
Activating fill switch does
not fill machine
Fill (rinse water) won’t shut
off
Activating drain switch
does not drain machine
Cycle light does not light
while cycle runs
Power light does not light
but machine runs
Wash tank or final rinse
temperature does not
display
Both the wash tank
temperature and the final
rinse temperature do not
display
Wash tank or final rinse
displays wrong
temperature
Defective (Instant Start) ice cube
relay
Replace ice cube relay
P/N: 00631.00
Defective drain/fill switch Replace drain/fill switch
P/N: 15522.00
Defective water solenoid valve Replace water solenoid valve
P/N: 03603.10
Defective water solenoid valve Replace water solenoid valve
P/N: 03603.10
Defective drain/fill switch Replace drain/fill switch
P/N: 15522.00
Defective timer assembly Replace timer assembly*
P/N: 14408.80
Defective (Rinse Relay) ice cube
relay
Replace ice cube relay
P/N: 00631.00
Drain hose is kinked Un-kink d rain hose
Defective drain/fill switch Replace drain/fill switch
P/N: 15522.00
Defective drain valve Replace drain valve
P/N: 04103.00
Defective cycle light Replace cycle light (green)
P/N: 00406.60
Defective power light Replace power light (red)
P/N: 00406.00
Defective digital thermometer Replace digital thermometer
P/N: 03202.45
Defective thermometer
transformer
Replace thermometer
transformer
P/N: 03202.60
Defective digital thermometer Replace digital thermometer
P/N: 03202.45
Defective thermister Replace thermister
P/N: 03202.65
*The timer assembly motor (P/N: 00501.00) or micro switches (P/N: 00411.00) can be replaced
independently if that’s the only component that’s failed.
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
17
4. Parts Kit
4.1. Initial Parts Kit (P/N 1100.66)
P/N DESCRIPTION Qty
15504.00 Motor Contactor, 2-Pole 20 Amp 1
15504.50 Heater Contactor, 2-Pole 35 Amp 1
00501.00 2-Minute Timer Motor 1
00631.00 Ice Cube Relay 120 V 1
15521.00 Rocker Switch Start Momentary 1
15522.00 Rocker Switch Drain/Fill 1
15521.50 Rocker Switch Power Maintained 1
00557.55 Reed Switch 1
03623.00 1/2” Vacuum Breaker Repair Kit – Watts 1
00707.00 1/2” Water Solenoid Repair Kit – J/E 1
04103.00 L1X/L1-C Drain Valve 120V 1
00206.00 Pump Seal Kit 1
13417.89 Heater Thermostat 1
17523.60 High Limit Switch 200°F 1
00411.00 Microswitch 1
00738.15 3/4” Water Solenoid Valve Coil – J/E 1
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
18
4.2. Optional Drain Pump Kit
Parts Manual
ITEM
NO.
NO.
REQ’D
1 1 15503.00 Drain Motor Ultra Jet for CMA-180UC 6 4 03101.00 Hose Clamp 1”
2 2 00432.50 Twist Tie 7 1 15603.00 Drain Line Gooseneck
3 1 15601.10 Black Drain Hose 1" ID X 3 1/2" 8 2 03801.10 10-32 SS Nut
4 1 15601.50 Drain Hose 1" ID, 6 ft
5 1 15601.60 Robber Hose 90 Deg.
P/N DESCRIPTION
ITEM
NO.
NO.
REQ’D
9 2 04806.00 #10 Brass Washer
P/N DESCRIPTION
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
19
Parts Manual
V
4.3. Optional Drain Pump—INSTALLATION INSTRUCTIONS
1. Start by removing the existing drain hose from the Drain Valve as shown in Figure 1.
From Scrap Tray
Remove
Figure 1
From Wash Tank
2. Locate the white and purple wires that are safe-ended and tie-wrapped at the top of the Drain
Pump compartment. Bring these wires out so they can be connected after mounting the Drain
Pump.
3. Connect the 3-inch long pump inlet drain hose to the Drain Valve and mount the Drain Pump
using the nuts and washers provided with the kit as shown in
White wire
Purple wire
Tighten this
hose clamp
over Drain
alve.
3-inch pump
inlet drain
hose.
Figure 2.
Remove this cover to
make wire connections.
Drain hose must elevate
12 to 16 inches before
dropping to drain.
Figure 2
4.
Remove the terminal cover and connect the white and purple wires to the two white wires
from the pump. Replace the cover.
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
20
Parts Manual
5.
Secure the drain gooseneck to the wash riser pipe with
the hose clamp provided as shown in
6.
Route the drain hose to the drain and provide a 1-inch air gap at the drain.
Figure 3.
Secure with
hose clamp
Figure 3
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
21
5. Customer Notice
CMA-180UC 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. Drain height should not exceed maximum height of 16”. If there is a floor
drain, it is highly recommended the pump drain be removed. Connect
supplied drain line to 3-way valve on back of machine and gravity feed to
the floor drain.
3. PRV must be adjusted not to exceed 20 psi. Recommended pressure is
between 18-20 psi.
4. Water supply to machine must be a minimum 120°F for 3 minute cycle
models and 140°F for 2 minute cycle models.
5. A four-wire, (neutral, ground and two 110v lines) 220v single phase
connection is required. There is a six foot cord provided with the machine.
CMA recommends a minimum 50-amp dedicated circuit, but you should
consult your local building code requirements for proper breaker size.
Activating/Adjusting the Booster Heater
1. Booster heater must
from high limit switch. The high limit switch can be found by removing the
front panel and locating the red button on the front of the heater tank.
2. Once the booster has been connected, the thermostat should be adjusted
to maintain 180°F during the final rinse cycle. The thermostat is located on
the front of the booster tank and is accessible by removing the front panel
on the machine.
Automatic Dispensing Equipment
1. Applications utilizing automated dispensers for administering warewash
chemicals must use 110v dispenser equipment. There is a 110v power
block for installing this equipment inside the control panel.
be filled with water prior to connecting the blue wire
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
22
6. Electrical Diagram
Electrical Diagram
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
23
Electrical Diagram
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 Page
24
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