CMA Dishmachines CMA180UCW/CD User manual

www.cmadishmachines.com
MODEL CMA-180UC
INSTALLATION & OPERATION
Rev 1.17
800-854-6417
FAX [phone]
CMA DISHMACHINES
12700 KNOTT STREET
GARDEN GROVE, CALIFORNIA 92841
Owner’s Manual
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TABLE OF CONTENTS
MODEL CMA-180UC
1. SPECIFICATIONS ........................................................................................ 2
1.1. CMA-180UC......................................................................................................................... 2
1.2. CMA-180UC OPERATIONAL CYCLE...................................................................................... 3
2. GETTING STARTED..................................................................................... 5
2.1. INTRODUCTION TO CMA-180UC........................................................................................... 5
2.2. RECEIVING AND INSTALLATION.............................................................................................. 5
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. INITIAL SETUP .......................................................................................................................13
3.1.1. 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. STARTUP PROCEDURES..........................................................................................................13
3.3. OPERATING AND CLEANING INSTRUCTIONS ..........................................................................14
3.4. PREVENTIVE MAINTENANCE CHART .....................................................................................15
3.5. QUICK SERVICE GUIDE...........................................................................................................16
3.6. TROUBLESHOOTING...............................................................................................................17
4. PARTS KIT ................................................................................................. 20
4.1. INITIAL PARTS KIT (P/N 1100.66).........................................................................................20
4.2. DRAIN PUMP .........................................................................................................................21
4.3. DRAIN PUMP REMOVAL INSTRUCTIONS ................................................................................22
5. CUSTOMER NOTICE ................................................................................. 23
6. ELECTRICAL DIAGRAM............................................................................ 24
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MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 2
1. Specifications
1.1. CMA-180UC
WATER CONSUMPTION
PER RACK .75 GAL. (2.83 L)
PER HOUR 17.9 GAL. (67.6 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
REQUIRED MINIMUM TEMP. * 110°F (43°C)
RECOMMENDED TEMP. ** 140°F (60°C)
WATER INLET ½” 1.27cm
DRAIN CONNECTION 1” 2.54cm
RINSE PRESSURE SET 20 PSI±5 PSI 1.41 kg/cm
2
CYCLE TEMPERATURES
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 230 VOLTS 1 PH—60 Hz
33 AMPS 35 AMPS
BOOSTER HEATER 5.3 kW 6.5 kW
WASH PUMP MOTOR 1 HP 1 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)
* For machines having "SAFETY TEMP" feature. ** For faster heat recovery.
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.
METRIC
EQUIVALENT
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MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 3
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
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.
Instant
Start Relay
Cam Timer
Motor Cam
Rinse Cycle
Cam
Wash Cycle
Cam
Optional Drain
Pump Cam
Safe-T-
Temp Cam
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MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 4
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.
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Getting Started
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 5
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 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.
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.
DISCLAIMERS
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.
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MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 6
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 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.
2.2.1. Electrical1
Prior to installation make sure the electrical supply is compatible with the specifications on the
machines data plate.
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. 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.
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.
2.2.2. Plumbing2
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 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).
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.
1,2All 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
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MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 7
Warning:
The CMA-180UC is supplied with a 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).
If water pressure exceeds 50 PSI, pressure reducing valve (PRV) is recommended.
Warning:
Water hardness greater than 3 grains per gallon requires a water softener 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.
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).
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.
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MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 8
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 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
No Connection. Insulate this wire!
This wire is LIVE!
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 2.2.4
and as described on next page.
1All 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
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MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 9
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).
Multi-conductor cable
Black (Main Power)
Note: Machine Neutral
(White wires)
Detergent Signal wires
(Red terminals)
Rinse Signal wires
(Blue terminals)
Gray/Violet
(Main Power Neutral)
(Same terminal as rinse neutral)
Brown (LIVE) wire
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MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 10
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 5th 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
2) Place all wires removed from 4cam timer assembly in
) and install 5cam timer in its place.
exact position
3) The cam timer motor receives (1) yellow wire and (1) white wire (re-connect the
on 5cam timer
assembly. yellow
wire
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 5th micro switch.
only from dishmachine harness to the motor).
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 5th micro switch.
HEATER CONTACTOR
L1 L2 L3 A1
T1 T2 T3 A2
N/C
21
22
Dishmachine
harness
Female bullet
connector
Male bullet
connector
SafeTtemp
harness
Female bullet
connector
Male bullet
connector
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MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 11
2.2.6. Water Tempering Kit
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MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 12
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)
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MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 13
3. Operation
3.1. Initial Setup
3.1.1. Flow Disc (New Models).
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
rinse temperature must be 180°F minimum3
3.1.4. Post Instructions
. 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.
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).
3Rinse cycle temperature must be observed during a rinse cyclewhile the machine is in operation.
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Parts Manual
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 14
3.3. Operating and Cleaning Instructions
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Parts Manual
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 15
3.4. Preventive Maintenance Chart
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Parts Manual
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 16
3.5. Quick service guide
MODEL: CMA 180UC HIGH TEMP UNDER COUNTER
TECHNICAL ISSUE
CAUSE
SOLUTION
Pressure regulator is not set properly
Set regulator to 18-20 psi
Faulty rinse micro switch Replace micro switch, P/N 00411.00
Scrap trap over flows
Drain hose elevated too high Must be lowered to goose neck level
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
Loose wire at display, board or
transformer
Secure connectors
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
Booster heater’s thermostat not
properly set
Adjust thermostat
Incoming water temperature to
booster heater below 140 F
Adjust external water heater in the facility
Loose lead connections Check and crimp connectors
Pump motor not running Faulty # 3 micro switch Replace micro switch, P/N 00411.00
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 # 3 micro switch Replace micro switch, P/N 00411.00
Faulty contactor Replace contactor, P/N015504.00
Water regulator not adjusted properly
Adjust regulator to 18-20 PSI
Low water pressure at the final rinse 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 Increase pressure to 18-20 psi
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
Tank discharge screen dirty Clean screen
Wash tank will not drain. Drain valve not operating Check power to drain valve
Drain valve faulty Replace Drain valve, P/N 04103.00
Total Restaurant Supply - https://totalsupply1.com - Toll Free 1-800-944-9304 - Local 507-288-9454
2940 Hwy 14 W, Rochester, MN 55901

Parts Manual
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 17
3.6. Troubleshooting
PROBLEM LIKELY CAUSE SOLUTION
Machine inoperative Power off at circuit breaker Reset circuit breaker
Defective power switch Replace power switch
P/N:
Motor inoperative
15521.50
Door is open Close door
Control panel is pulled out Secure control panel
Defective reed switch Replace reed switch
P/N:
Defective timer assembly
00557.55
Replace timer assembly*
P/N:
Defective pump motor contactor
14408.80
Replace contactor
P/N:
Defective motor
15504.00
Replace motor
P/N:
Motor runs with door open
00201.66
Defective reed switch Replace reed switch
P/N:
Defective pump motor contactor
00557.55
Replace contactor
P/N:
Heater (no heat)
15504.00
High limit switch opened or
defective Reset or replace switch
P/N:
Defective thermostat
17523.51
Replace thermostat
P/N:
Defective heater contactor
13417.89
Replace heater contactor
P/N:
Defective heater
15504.50
Replace heater
P/N:
Heater (never turns off)
15517.00
Defective thermostat Replace thermostat
P/N:
Defective heater contactor
13417.89
Replace heater contactor
P/N:
*The timer assembly motor (P/N:
15504.50
00501.00) or micro switches (P/N: 00411.00) can be replaced
independently if that’s the only component that’s failed.
Total Restaurant Supply - https://totalsupply1.com - Toll Free 1-800-944-9304 - Local 507-288-9454
2940 Hwy 14 W, Rochester, MN 55901

Parts Manual
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 18
PROBLEM LIKELY CAUSE SOLUTION
Low heat during operation 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:
Low rinse water pressure
15517.00
Pressure regulator out of
adjustment Adjust pressure regulator
Defective pressure gauge (actual
pressure is okay) Replace pressure gauge
P/N:
Regulator at maximum but
rinse pressure still low
13605.45
Insufficient water supply flow Supply larger supply line
Defective water solenoid valve Replace water solenoid valve
P/N:
Low rinse water flow
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 Replace water solenoid valve
P/N:
Defective (Rinse Relay) ice cube
relay
03603.10
Replace ice cube relay
P/N:
Rinse water runs with door
open
00631.00
Defective reed switch Replace reed switch
P/N:
Water overflows scrap tray
onto floor
00557.55
Drain hose is kinked Un-kink drain 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:
Defective drain pump
14408.80
(if drain pump is used) Replace drain pump
P/N:
With power on, activating
start switch does not begin
cycle
15503.00
Defective start switch (cycle light
will not light either) Replace start switch
P/N:
Defective timer assembly
15521.00
Replace timer assembly*
P/N:
*The timer assembly motor (P/N:
14408.80
00501.00) or micro switches (P/N: 00411.00) can be replaced
independently if that’s the only component that’s failed.
Total Restaurant Supply - https://totalsupply1.com - Toll Free 1-800-944-9304 - Local 507-288-9454
2940 Hwy 14 W, Rochester, MN 55901

Parts Manual
MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.17 Page 19
PROBLEM LIKELY CAUSE SOLUTION
Start switch requires > 1
second activation to run
cycle
Defective (Instant Start) ice cube
relay Replace ice cube relay
P/N:
Activating fill switch does
not fill machine
00631.00
Defective drain/fill switch Replace drain/fill switch
P/N:
Defective water solenoid valve
15522.00
Replace water solenoid valve
P/N:
Fill (rinse water) won’t shut
off
03603.10
Defective water solenoid valve Replace water solenoid valve
P/N:
Defective drain/fill switch
03603.10
Replace drain/fill switch
P/N:
Defective timer assembly
15522.00
Replace timer assembly*
P/N:
Defective (Rinse Relay) ice cube
relay
14408.80
Replace ice cube relay
P/N:
Activating drain switch
does not drain machine
00631.00
Drain hose is kinked Un-kink drain hose
Defective drain/fill switch Replace drain/fill switch
P/N:
Defective drain valve
15522.00
Replace drain valve
P/N:
Cycle light does not light
while cycle runs
04103.00
Defective cycle light Replace cycle light (green)
P/N:
Power light does not light
but machine runs
00406.60
Defective power light Replace power light (red)
P/N:
Wash tank or final rinse
temperature does not
display
00406.00
Defective digital thermometer Replace digital thermometer
P/N:
Both the wash tank
temperature and the final
rinse temperature do not
display
03202.45
Defective thermometer
transformer Replace thermometer transformer
P/N:
Wash tank or final rinse
displays wrong
temperature
03202.60
Defective digital thermometer Replace digital thermometer
P/N:
Defective thermister
03202.45
Replace thermister
P/N:
*The timer assembly motor (P/N:
03202.65
00501.00) or micro switches (P/N: 00411.00) can be replaced
independently if that’s the only component that’s failed.
Total Restaurant Supply - https://totalsupply1.com - Toll Free 1-800-944-9304 - Local 507-288-9454
2940 Hwy 14 W, Rochester, MN 55901