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Owner’s Manual
Keep with machine for reference
MODEL CMA-180UC
INSTALLATION
&
OPERATION
Rev 1.16A
C M A D I S H M A C H I N E S
1 2 7 0 0 K N O T T A V E N U E
GARDEN GROVE, CALIFORNIA 92841
8 0 0 - 8 5 4 - 6 4 1 7
F A X 7 1 4 - 8 9 5 - 2 1 4 1 www.cmadishmachines.com
T
ABLE OF
C
ONTENTS
M ODEL CMA-180UC
1.
SPECIFICATIONS ........................................................................................ 2
1.1.
CMA-180UC ......................................................................................................................... 2
1.2.
CMA-180UC O PERATIONAL C YCLE ...................................................................................... 3
2.
GETTING STARTED ..................................................................................... 5
2.1.
I NTRODUCTION TO CMA-180UC ........................................................................................... 5
2.2.
R ECEIVING AND I NSTALLATION .............................................................................................. 6
2.2.1.
Electrical ....................................................................................................................... 6
2.2.2.
Plumbing ........................................................................................................................ 6
2.2.3.
BETA Detergent And Rinse Dispenser (Optional). ........................................................ 7
2.2.4.
NOVA Detergent and Rinse Dispenser (Optional). ....................................................... 8
2.2.5.
Safe Ttemp Feature ...................................................................................................... 10
2.2.6.
Water Tempering Kit ................................................................................................... 11
2.2.7.
Booster Heater Setup ................................................................................................... 12
2.2.8.
Installers Checklist ...................................................................................................... 12
3.
OPERATION ............................................................................................... 13
3.1.
I NITIAL S ETUP ...................................................................................................................... 13
3.1.1.
Dema Valve and Dema Flow Disc (New Models). ...................................................... 13
3.1.2.
Rinse Pressure Regulator (Old Models Prior January 2008). ..................................... 13
3.1.3.
Rinse and Wash Temperatures .................................................................................... 13
3.1.4.
Post Instructions .......................................................................................................... 13
3.2.
S TARTUP P ROCEDURES ......................................................................................................... 13
3.3.
O PERATING AND C LEANING I NSTRUCTIONS ......................................................................... 14
3.4.
P REVENTIVE M AINTENANCE C HART .................................................................................... 15
3.5.
Q UICK SERVICE GUIDE .......................................................................................................... 16
3.6.
T ROUBLESHOOTING .............................................................................................................. 17
4.
PARTS KIT ................................................................................................. 20
4.1.
I NITIAL P ARTS K IT (P/N 1100.66) ........................................................................................ 20
4.2.
D
RAIN
P
UMP
........................................................................................................................ 21
4.3.
D RAIN P UMP R EMOVAL I NSTRUCTIONS ............................................................................... 22
5.
CUSTOMER NOTICE ................................................................................. 23
6.
ELECTRICAL DIAGRAM ............................................................................ 24 www.cmadishmachines.com
1. Specifications
1.1. CMA-180UC
METRIC
EQUIVALENT
WATER CONSUMPTION
PER RACK
PER HOUR
OPERATING CYCLE
WASH TIME-SEC
RINSE TIME-SEC
DWELL TIME-SEC
TOTAL CYCLE
OPERATING CAPACITY
RACKS PER HOUR
WASH TANK CAPACITY
PUMP CAPACITY
WATER REQUIREMENTS
REQUIRED MINIMUM TEMP. *
RECOMMENDED TEMP. **
WATER INLET
DRAIN CONNECTION
RINSE PRESSURE SET
CYCLE TEMPERATURES
WASH-°F
RINSE -°F
FRAME DIMENSIONS
DEPTH
WIDTH
HEIGHT
MAX CLEARANCE FOR DISHES
.75 GAL.
17.9 GAL.
94
16
10
2 MIN.
30
2.5 GAL.
38 GPM
110°F
140°F
½”
1”
20 PSI
±
5 PSI
150°F -160°F
180°F -195°F
25”
24”
33 ¼”
14.5”
ELECTRICAL RATING*
BOOSTER HEATER
WASH PUMP MOTOR
208 VOLTS
1 PH—60 Hz
33 AMPS
5.3 kW
¾ HP
230 VOLTS
1 PH—60 Hz
35 AMPS
6.5 kW
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 234# (106 kg)
(2.83 L)
(67.6 L)
94
16
10
2 MIN.
30
(9.46 L)
(144 LPM)
(43°C)
(60°C)
1.27cm
2.54cm
1.41 kg/cm
2
(65.5°C/71°C)
(82°C/90°C)
(63.5 cm)
(60.96 cm)
(84.45 cm)
(36.8 cm)
* For machines having "SAFETY TEMP" feature. ** For faster heat recovery.
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A 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
Safe-T-
Temp 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. 1.16A Page 3
5.
When the cam timer assembly approaches the final rinse portion of the cycle, the “Safe-T-
Temp” sixth 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.
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page 4
Getting Started
2. Getting Started
2.1. Introduction to CMA-180UC
The CMA-180UC 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, 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 2).
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 4 “Parts ” for the 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 Operation Section also includes diagnostic considerations for the machine when problems occur.
We are committed to providing the best machines and customer service in the food industry and your feedback is welcome.
DISCLAIMER OF LIABILITY OF WARRANTY: 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.
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page
5
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. Electrical
1
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 2). This system requires 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. Plumbing
2
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.
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 2).
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).
Warning: If the water hardness is greater than 3 grains per gallon, a water softener is required to prevent damage to heating elements (scale build- up) and booster tank rinse flow restriction.
Rinse flow restriction will cause the booster tank to expand and contract causing metal flex, which will eventually crack the tank.
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. 1.16A Page 6
2.2.3. BETA Detergent And Rinse Dispenser (Optional).
Optional built-in Beta dispenser (CMA p/n 14585.00) has easy access for chemical settings behind the front kick panel. Both initial charge and recharge are factory pre-set. Basic settings for both detergent and rinse speed are 50%. Operating fine-adjustment screws on the dispenser can control the amount of chemicals drawn into chemical lines.
Undercounter machine with the optional dispenser must be ordered separately, as option at time of order. Optional dispenser has to be pre-wired prior to shipment (see electrical diagram for wiring options).
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page 7
2.2.4. 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 detergent 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
Gray/Violet
Black
Brown
Circuit Voltage Function
90 VAC-130 VAC 50/60 Hz
90 VAC-130 VAC 50/60 Hz
Main AC Power
Main AC Power
No Connection. Insulate this wire!
This wire is LIVE!
Yellow
White/Yellow
90 VAC-130 VAC 50/60 Hz
90 VAC-130 VAC 50/60 Hz
Detergent Signal
Detergent Signal
Violet
White/Violet
90 VAC -130 VAC 50/60 Hz
90 VAC -130 VAC 50/60 Hz
Rinse Signal
Rinse Signal
The individual conductors need to be connected as shown in Figure 2.2.4 and as described on next page.
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. 1.16A Page 8
Brown (LIVE) wire
Multi-conductor cable
Rinse Signal wires
(Blue terminals)
Detergent Signal wires
(Red terminals)
Black (Main Power)
Gray/Violet
(Main Power Neutral)
(Same terminal as rinse neutral)
Note: Machine Neutral
(White wires)
Figure 2.2.4
Note: In Figure 2.2.4 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.
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).
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page 9
2.2.5. 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 “SafeTtemp” function operates off the 5 th
cam (labeled “SafeTtemp”) on the 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 on 5cam timer 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.
L1 L2 L3 21 A1
HEATER CONTACTOR N/C
T1 T2 T3 22 A2
SafeTtemp harness
Dishmachine harness
Female bullet connector
Male bullet connector
Female bullet connector
Male bullet connector
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page 10
2.2.6. Water Tempering Kit
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page 11
2.2.7. 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 disconnected at the factory and will require re-connection 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.
2.2.8. 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. 1.16A Page 12
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).
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
3 rinse temperature must be 180°F minimum . If necessary, adjust the temperatures by removing the front kick panel and turning the thermostat adjustment clockwise to increase, counterclockwise to decrease. This one adjustment controls both temperatures.
3.1.4. 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 3.1.3
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
Rinse cycle temperature must be observed during a rinse cyclewhile the machine is in operation.
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page
13
Parts Manual
3.3. Operating and Cleaning Instructions
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page 14
3.4. Preventive Maintenance Chart
Parts Manual
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page 15
Parts Manual
3.5. Quick service guide
MODEL: CMA 180UC HIGH TEMP UNDER COUNTER
TECHNICAL ISSUE CAUSE
Pressure regulator is not set properly Set regulator to 18-20 psi
Faulty rinse micro switch
Drain hose elevated too high
SOLUTION
Replace micro switch, P/N 00411.00
Must be lowered to goose neck level
Scrap trap over flows
Obstruction in drain hose
Scrap exit screen
Faulty drain pump
Check hose & clean
Clean exit screen
Replace pump, P/N 15503.00
Door leaks
Machine not level
Machine is leaning forward
Wash arm end cap missing
Door gasket
Loose wire at display, board or transformer
Adjust machine legs to level
Adjust machine legs to level
Replace end cap, P/N 00308.20
Replace gasket, P/N 14506.60
Secure connectors
Thermometer failure
Rinse water temperature low /high
Faulty temperature sensing wire
Faulty temperature sensing unit
Faulty transformer
Scaled heating element
Booster heater’s thermostat not properly set
Incoming water temperature to booster heater below 140 F
Correct, replace, P/N 03202.66
Replace unit, P/N 03203.00
Replace transformer, P/N 03202.60
Clean scale from heater
Adjust thermostat
Adjust external water heater in the facility
Pump motor not running
Pump motor runs continuously
Low water pressure at the final rinse
Loose lead connections
Faulty # 3 micro switch
Faulty contactor
Faulty wash pump motor
Faulty # 3 micro switch
Faulty contactor
Check and crimp connectors
Replace micro switch, P/N 00411.00
Replace contactor, P/N 15504.00
Replace wash pump motor, P/N 00201.00
Replace micro switch, P/N 00411.00
Replace contactor, P/N015504.00
Water regulator not adjusted properly Adjust regulator to 18-20 PSI
Scrap trap overflows over night
Poor cleaning results
Clogged final rinse spray jets Clean jets
Missing final rinse spray end cap Replace end cap, P/N 00308.17
Low incoming water pressure from facility
Faulty water solenoid diaphragm
Increase pressure to 18-20 psi
Clean or replace diaphragm, P/N 00706.00
Low wash or rinse water temp.
Wash arm bearing or jets
Rinse arm bearing or jets
Tank discharge screen dirty
Check temperature settings
Clean bearing and arm jets
Clean bearing and arm jets
Clean screen
Wash tank will not drain. Drain valve not operating
Drain valve faulty
Check power to drain valve
Replace Drain valve, P/N 04103.00
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page 16
Parts Manual
3.6. Troubleshooting
PROBLEM LIKELY CAUSE
Machine inoperative
Motor inoperative
Motor runs with door open
Heater (no heat)
Heater (never turns off)
Power off at circuit breaker
Defective power switch
Door is open
Control panel is pulled out
Defective reed switch
Defective timer assembly
Defective pump motor contactor
Defective motor
Defective reed switch
Defective pump motor contactor
High limit switch opened or defective
Defective thermostat
Defective heater contactor
Defective heater
Defective thermostat
Defective heater contactor
SOLUTION
Reset circuit breaker
Replace power switch
P/N: 15521.50
Close door
Secure control panel
Replace reed switch
P/N: 00557.55
Replace timer assembly *
P/N: 14408.80
Replace contactor
P/N: 15504.00
Replace motor
P/N: 00201.66
Replace reed switch
P/N: 00557.55
Replace contactor
P/N: 15504.00
Reset or replace switch
P/N: 17523.51
Replace thermostat
P/N: 13417.89
Replace heater contactor
P/N: 15504.50
Replace heater
P/N: 15517.00
Replace thermostat
P/N: 13417.89
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. 1.16A Page 17
Parts Manual
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)
Thermostat out of adjustment
Cold water mixing with supply
Turn up supply water heater
Insulate supply water pipe
Adjust thermostat
Isolate hot water from cold water
Defective heater Replace heater
P/N: 15517.00
Adjust pressure regulator Pressure regulator out of adjustment
Defective pressure gauge (actual pressure is okay)
Insufficient water supply flow
Defective water solenoid valve
Replace pressure gauge
P/N: 13605.45
Supply larger supply line
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 Defective water solenoid valve
Rinse water runs with door open
Water overflows scrap tray onto floor
With power on, activating start switch does not begin cycle
Defective (Rinse Relay) ice cube relay
Defective reed switch
Drain hose is kinked
Drain hose is not properly elevated before dropping to drain
(if drain pump is used)
Defective timer assembly
Defective drain pump
(if drain pump is used)
Defective start switch (cycle light will not light either)
Defective timer assembly
Replace water solenoid valve
P/N: 03603.10
Replace ice cube relay
P/N: 00631.00
Replace reed switch
P/N: 00557.55
Un-kink drain hose
Elevate drain hose 12 to 16” above pump before dropping to drain
Replace timer assembly *
P/N: 14408.80
Replace drain pump
P/N: 15503.00
Replace start switch
P/N: 15521.00
Replace timer assembly *
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. 1.16A Page 18
Parts Manual
PROBLEM
Start switch requires > 1 second activation to run cycle
Activating fill switch does not fill machine
LIKELY CAUSE
Defective (Instant Start) ice cube relay
SOLUTION
Replace ice cube relay
P/N: 00631.00
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 drain/fill switch
Defective water solenoid valve
Defective water solenoid valve
Defective drain/fill switch
Defective timer assembly
Defective (Rinse Relay) ice cube relay
Drain hose is kinked
Defective drain/fill switch
Defective drain valve
Defective cycle light
Defective power light
Defective digital thermometer
Defective thermometer transformer
Defective digital thermometer
Defective thermister
Replace drain/fill switch
P/N: 15522.00
Replace water solenoid valve
P/N: 03603.10
Replace water solenoid valve
P/N: 03603.10
Replace drain/fill switch
P/N: 15522.00
Replace timer assembly *
P/N: 14408.80
Replace ice cube relay
P/N: 00631.00
Un-kink drain hose
Replace drain/fill switch
P/N: 15522.00
Replace drain valve
P/N: 04103.00
Replace cycle light (green)
P/N:
Replace power light (red)
P/N:
Replace digital thermometer
P/N:
00406.60
00406.00
03202.45
Replace thermometer transformer
P/N: 03202.60
Replace digital thermometer
P/N: 03202.45
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. 1.16A Page 19
Parts Manual
4. Parts Kit
4.1. Initial Parts Kit (P/N 1100.66)
P/N DESCRIPTION
15504.00 Motor Contactor, 2-Pole 20 Amp
15504.50 Heater Contactor, 2-Pole 35 Amp
00501.00 2-Minute Timer Motor
00631.00 Ice Cube Relay 120 V
15523.00 Rocker Switch Start Momentary
15523.50 Rocker Switch Drain/Fill
15524.00 Rocker Switch Power Maintained
00556.10 Reed Switch
03623.00 1/2” Vacuum Breaker Repair Kit – Watts
00707.00 1/2” Water Solenoid Repair Kit – J/E
04113.00 L1X/L1-C Drain Valve 120V
00206.30 Pump Seal Kit
13417.89 Heater Thermostat
17523.60 High Limit Switch 200°F
00411.00 Microswitch
03202.66 Thermocouple (Control Products)
03604.30 Dema Valve Repair Kit 3/8",1/2" & 3/4
41015.60 Water Solenoid Coil Only 110V
1
1
1
1
1
1
1
1
1
1
1
1
Qty
1
1
1
1
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page 20
4.2. Drain Pump
Parts Manual
ITEM
NO.
NO.
REQ’D
1
2
3
4
5
1
2
1
1
1
P/N DESCRIPTION
15503.00 Drain Motor Ultra Jet for CMA-180UC
00932.50 Twist Tie
15601.10 Black Drain Hose 1" ID X 3 1/2"
15605.00 Drain Hose with Goose Neck
15601.60 Robber Hose 90 Deg.
ITEM
NO.
NO.
REQ’D
6
7
8
9
4
1
2
2
P/N DESCRIPTION
03101.00 Hose Clamp 1”
15603.00 Drain Line Gooseneck
03801.10 10-32 SS Nut
04806.00 #10 Brass Washer
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page 21
Parts Manual
4.3. Drain Pump Removal Instructions
Drain Pump (P/N 15503.00) should only be used if a floor drain is not accessible to the machine at installation.
When converting the UC-180 dishwasher to a gravity drain unit, remove the drain pump assembly as shown in Figure 1 . Re-route the 6Ft drain hose to the center port were the drain pump was located, moving the displaced line to the open port of the valve. Insure there is a 1” air gap between the discharge and floor drain as shown in Figure 2 .
Disconnect purple and white wires
Remove this cover to disconnect the wires
Remove this hose clamp over Drain
Valve.
Remove drain hose from the drain gooseneck
Disconnect 3inch pump inlet drain hose.
Figure 1
Figure
Figure 2
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page 22
Parts Manual
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 be filled with water prior to connecting the blue wire 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.
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page 23
6. Electrical Diagram
Electrical Diagram
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page 24
Electrical Diagram
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.16A Page 25
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