CMA Dishmachines CMA-180UC Owner`s manual

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Owner’s Manual

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MODEL CMA-180UC

INSTALLATION

&

OPERATION

Rev 1.15B

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.

O

PTIONAL

D

RAIN

P

UMP

K

IT

................................................................................................. 21

4.3.

O PTIONAL D RAIN P UMP —I NSTALLATION I NSTRUCTIONS .................................................... 22

5.

CUSTOMER NOTICE ................................................................................. 24

6.

ELECTRICAL DIAGRAM............................................................................ 25

www.cmadishmachines.com

1. Specifications

1.1. CMA-180UC

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

WATER INLET

DRAIN CONNECTION

RINSE PRESSURE SET

CYCLE TEMPERATURES

METRIC

EQUIVALENT

.86 GAL.

20.6 GAL.

94

16

10

2 MIN.

30

2.5 GAL.

38 GPM

(3.25 L)

(77.8 L)

94

16

10

2 MIN.

30

(9.46 L)

(144 LPM)

140°F (60°C)

½” 1.27cm

1” 2.54cm

20 PSI

±5 PSI 1.41 kg/cm

2

FRAME DIMENSIONS

MAX CLEARANCE FOR DISHES

ELECTRICAL RATING*

14.5”

208 VOLTS

1 PH—60 Hz

(36.8 cm)

230 VOLTS

1 PH—60 Hz

BOOSTER HEATER

33 AMPS

5.3 kW

35 AMPS

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

MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15B 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: 80 90 100

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. 1.15B 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. 1.15B 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.

The next section of the manual is the Parts .This section has the parts lists and wiring diagram for

the machine.

We are committed to providing the best machines and customer service in the food industry and your feedback is welcome.

MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15B 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).

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. 1.15B 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. 1.15B 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

Violet

White/Violet

90 VAC-130 VAC 50/60 Hz

90 VAC-130 VAC 50/60 Hz

90 VAC -130 VAC 50/60 Hz

90 VAC -130 VAC 50/60 Hz

Detergent Signal

Detergent Signal

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. 1.15B 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. 1.15B 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. 1.15B Page 10

2.2.6. Water Tempering Kit

MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15B 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 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.

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. 1.15B Page 12

Operation

3. Operation

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.

1. Install wall chart and instruct machine operator on proper cleaning and operation of the CMA-180UC.

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 cycle while the machine is in operation.

MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15B Page 13

3.3. Operating and Cleaning Instructions

Operation

MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15B Page 14

Operation

MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15B Page 15

Operation

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

Drain hose elevated too high 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

Faulty water solenoid diaphragm

Low wash or rinse water temp.

Wash arm bearing or jets

Rinse arm bearing or jets

Tank discharge screen dirty

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

Loose lead connections

Faulty # 3 micro switch

Check and crimp connectors

Replace micro switch, P/N 00411.00

Faulty contactor Replace contactor, P/N 15504.00

Faulty wash pump motor

Faulty # 3 micro switch

Replace wash pump motor, P/N 00201.00

Replace micro switch, P/N 00411.00

Pump motor runs continuously

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

Scrap trap overflows over night

Poor cleaning results

Increase pressure to 18-20 psi

Clean or replace diaphragm, P/N 00706.00

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. 1.15 Page 16

Operation

3.6. Troubleshooting

PROBLEM LIKELY SOLUTION

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

Reset circuit breaker

Replace power switch

P/N: 15521.50

Close door

Secure control panel

Defective reed switch

Defective timer assembly

Replace reed switch

P/N: 00557.55

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

Defective pump motor contactor Replace contactor

P/N: 15504.00

High limit switch opened or defective

Defective thermostat

Replace reed switch

P/N: 00557.55

Reset or replace switch

P/N: 17523.51

Replace thermostat

P/N: 13417.89

Defective heater contactor

Defective heater

Replace heater contactor

P/N: 15504.50

Replace heater

P/N: 15517.00

Defective thermostat

Defective heater contactor

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. 1.15B Page 17

Operation

PROBLEM LIKELY 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

Rinse water runs with door open

Water overflows scrap tray onto floor

With power on, activating start switch does not begin cycle

Defective water solenoid valve

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. 1.15 B Page 18

Operation

PROBLEM LIKELY SOLUTION

Start switch requires > 1 second activation to run cycle

Activating fill switch does not fill machine

Defective (Instant Start) ice cube relay

Defective drain/fill switch

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 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: 00406.60

Replace power light (red)

P/N: 00406.00

Replace digital thermometer

P/N: 03202.45

Replace thermometer transformer

P/N: 03202.60

Replace digital thermometer

P/N: 03202.45

P/N: 03202.65

Replace thermister

*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 B Page 19

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

15521.00 Rocker Switch Start Momentary

15522.00 Rocker Switch Drain/Fill

15521.50 Rocker Switch Power Maintained

03623.00 1/2” Vacuum Breaker Repair Kit – Watts

00707.00 1/2” Water Solenoid Repair Kit – J/E

04103.00 L1X/L1-C Drain Valve 120V

00206.00 Pump Seal Kit

17523.60 High Limit Switch 200°F

00411.00 Microswitch

00738.15 3/4” Water Solenoid Valve Coil – J/E

Qty

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15B Page 20

4.2. Optional Drain Pump Kit

Parts Manual

ITEM

NO.

NO.

REQ’D

1

2

3

4

5

1

2

1

1

1

P/N DESCRIPTION

ITEM

NO.

NO.

REQ’D

15503.00 Drain Motor Ultra Jet for CMA-180UC

00432.50 Twist Tie

15601.10 Black Drain Hose 1" ID X 3 1/2"

15601.50 Drain Hose 1" ID, 6 ft

15601.60 Robber Hose 90 Deg.

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. 1.15 B Page 21

Parts Manual

4.3. Optional Drain Pump—I

NSTALLATION

I

NSTRUCTIONS

1. Start by removing the existing drain hose from the Drain Valve as shown in Figure 1 .

From Scrap Tray

Remove

From Wash Tank

Figure 1

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 Figure 2 .

Remove this cover to make wire connections.

White wire

Purple wire

Tighten this hose clamp over Drain

Valve.

Drain hose must elevate

12 to 16 inches before dropping to drain.

3-inch pump inlet drain hose.

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 B Page 22

Parts Manual

5. Secure the drain gooseneck to the wash riser pipe with the hose clamp provided as shown in Figure 3.

Secure with hose clamp

Figure 3

6. Route the drain hose to the drain and provide a 1-inch air gap at the drain.

MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15B Page 23

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. 1.15B Page 24

Electrical Diagram

MODEL CMA-180UC INSTALLATION & OPERATION MANUAL Rev. 1.15 B Page 26

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