CMA Dishmachines GW-100 User manual

www.cmadishmachines.com
MODEL GW-100
INSTALLATION & OPERATION
REV.1.00
800-854-6417
FAX 714
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8
95
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2
141
Owner’s Manual
Keep with machine for reference
CMA DISHMACHINES
12700 KNOTT AVENUE
GARDEN GROVE, CALIFORNIA 92841

TABLE OF CONTENTS
MODEL GW-100
1. RECEIVING ...................................................................................................2
2. SPECIFICATIONS.........................................................................................3
3. INSTALLATION.............................................................................................4
3.1. ELECTRICAL.................................................................................................................................... 4
3.2. PLUMBING....................................................................................................................................... 4
4. OPERATION..................................................................................................5
4.1. FILLING OF THE WASH TANK .......................................................................................................... 5
4.2. OPERATION INSTRUCTIONS ............................................................................................................. 5
4.2.1. Proper Chemical Dosage ........................................................................................................ 5
4.3. CLEANING INSTRUCTIONS ............................................................................................................... 6
4.3.1. Highly Recommended Daily Cleaning Instructions...................................................................... 6
4.3.2. Weekly Cleaning Instructions....................................................................................................... 6
5. TROUBLESHOOTING...................................................................................7
6. ELECTRICAL DIAGRAM ..............................................................................9

Receiving
1. Receiving
1. Remove all packing material from the machine.
2. Remove all tape securing components within the machine. Check that both trays are
positioned properly.
3. Check for the following component parts:
A. Check that the rinse screen is secure in the rinse drain.
B. Check the position of the GW-100 curtains.
C. Check that the conveyor is level and the drive gear is engaged in the conveyor’s
outer rim grooves.
D. Important: Check and remove overflow drain tube, which is secured to the front of
the scrap tank, behind the access door. Place it in position in soap tank.
E. Check that the screen in the detergent tank is in position.
F. Check that the drain screen is in position.
4. Important: Read all instructions completely.
MODEL GW-100 SERVICE & PARTS MANUAL Rev. 1.00 01/17/08 Page 2

Specifications
2. Specifications
WATER CONSUMPTION
HOT WATER INITIAL FILL 3 GAL. 11.35 L.
HOT WATER PER HOUR (max) 12 GAL. 45.42 L.
COLD WATER PER HOUR 168 GAL. 636 L.
OPERATING CAPACITY
(2-1/2”) GLASSES PER HOUR 1000 -
WATER REQUIREMENTS
COLD WATER INLET 1/2” -
HOT WATER INLET 1/2” -
DRAIN CONNECTION 1-1/2” -
TEMPERATURES
INLET COLD WATER 75 °F 24°C
INLET HOT WATER (recommended) 140°F 60°C
FRAME DIMENSIONS
DEPTH 25-1/8” 63.8CM
WIDTH 25-1/4” 64CM
HEIGHT 39”- 40-1/2” 99 -102.8CM
MAX CLEARANCE FOR GLASSES 11-3/4” 29.9CM
ELECTRICAL
120 VAC
11 AMPS
TANK HEATER
(Not Booster Heater) 1.25KW
WASH PUMP MOTOR .1HP
SHIPPING WEIGHT
GW-100 (Approximate)
156#
71 kg
MODEL GW-100 SERVICE & PARTS MANUAL Rev. 1.00 01/17/08 Page 3

Operation
3. Installation
3.1. Electrical*
A 15 Amp, 120 Volt, 60 Hz dedicated circuit should be used to supply electrical power to the GL-C machine (see
specification sheet page 3). The power connection with the leads L-1, L-2 (N) and Ground must be such that there is
sufficient length of flexible conduit to permit the machine to be moved for cleaning.
MODEL GW-100 SERVICE & PARTS MANUAL Rev. 1.00 01/17/08 Page 4
Note: For cord-connected machines provide a grounding receptacle.
3.2. Plumbing*
Making Cold Water Connection
1. Connect a cold 1/2” water line to the cold water solenoid valve and inspect for leaks. Water flow pressure
should be between 20-100 PSI.
2. Cold water usage is approximately 2.8 U.S. gpm.
3. Machine is equipped with a mixing valve located between hot and cold solenoid valves. Open until
temperature reaches 75°F for areas with very cold rinse water to heat the rinse water which will prevent
glasses from cracking.
Making Hot Water Connection
1. Connect a hot 1/2” water line to the hot water solenoid valve. The temperature must be minimum 140°F/60°C
with flow pressure between 20-100 PSI.
2. Hot water usage is approximately 12 U.S. gph.
Making Drain Connection
1. Connect a 1-1/2” PVC drain line to the bottom of the scrap tank. (note: machine is gravity drain)
*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.

Operation
4. Operation
4.1. Filling of the Wash Tank
• With overflow drain tube in place in the detergent tank proceed to following.
• Turn power on-off/flush switch to the “ON” position. The water solenoid will activate and fill soap
tank until the proper level is reached, also activating heating element.
• Set the thermostat for minimum 140°F/60°C. The wash tank temperature is regulated by heater
and thermostat.
4.2. Operation Instructions
• Open the door; place on-off/flush switch to the “ON” position. The wash tank will begin its
automatic fill cycle.
• Verify product containers have chemicals.
• Detergent is fed from the supply container into the detergent tank in controlled amounts by the
detergent pump. Use detergent at strength recommended by your chemical supplier.
• Place glasses on the conveyor wheel. Push conveyor rocker switch located on front right side of
machine. The conveyor wheel will stop and start with conveyor shut-off rod.
4.2.1. Proper Chemical Dosage
The amount of chemical delivered, whether it is detergent, sanitizer or rinse aid, is controlled using the set
screw located on the circuit board attached to the control box.
• For detergent, contact your chemical supplier for proper type and detergent concentration.
Note: Detergent pump only operates when hot water tank is filling or when prime switches are
activated.
• Circuit board basic settings are: arrow facing 9:00 for sani and rinse, 12:00 for detergent.
Adjustments To Detergent Pump:
• When replacement container is installed, push the prime switch in and hold until the detergent feed line is full.
• Securely place overflow drain tube into soap tank and switch power on-off/flush switch to the “ON” position.
The detergent dispenser will automatically dispense soap as the soap tank fills with water.
• The quantity of product can be regulated at the circuit board using the set screw.
Adjustments To Sanitizer Pump:
• Follow same procedures as detergent for priming chemical.
• Push conveyor rocker switch located on the front of the machine. Place sanitizer test strip under the final rinse
and read for proper level.
• The quantity of product can be controlled at the sani circuit board set screw.
Note: Use chlorine test papers to verify and monitor the 50ppm chlorine level
MODEL GW-100 SERVICE & PARTS MANUAL Rev. 1.00 01/17/08 Page 5

Electrical Diagram
Adjustments To Rinse Agent Pump:
• Follow same procedures as detergent for priming chemical.
• Cycle glasses through machine and verify rinse agent is feeding properly. Increase rinse aid as
necessary by turning up or down circuit set screw.
• Basic circuit board setting is 9:00.
Note: To meet standards set by NSF, chlorine at 50ppm must be used in the final rinse.
4.3. Cleaning Instructions
4.3.1. Highly Recommended Daily Cleaning Instructions
Remove optional GW-100 drain tray & waste collector from the front of your glasswasher and clean
thoroughly.
Turn power switch off behind front service door.
Remove all trays, screens and curtains. Wash, rinse them thoroughly and allow to dry.
Move shut-off rod to side and remove conveyor hub and wheel from machine.
Remove and clean wash and rinse arms. Wash tube brush and jet reamer supplied for cleaning of
arms.
CAUTION: Do not twist spray arms, pull straight out or they will break
Install wash and rinse arms (Wash and rinse arms are different .The receiver arm sockets are molded
differently to prevent placing arms in wrong location).
Use reverse procedures for placing conveyor wheel and hub back into position.
Note: conveyor motor can be pulled to the side as your placing wheel into position. Open
front access door and pull conveyor motor toward you as seat the conveyor wheel into
position.
Place conveyor hub in center of conveyor, align shut-off rod to normal position. Install left and right
trays, making sure shut-off rod is positioned between guide brackets. Install curtains into their
holders.
Upper and lower wash tank screens should be removed and cleaned thoroughly.
Pull the drain tube from the soap tank and clean the tank.
Insert overflow drain tube and wash tank screens back to appropriate placement.
Reattach optional GW-100 waste collection assembly.
Check product levels and close front service door.
4.3.2. Weekly Cleaning Instructions
Remove upper and lower wash and rinse arms from their spray bases, remove end plugs, and clean
spray tubes with Cleaning Drill p/n 00899.01, Cleaning Brush p/n 00899.02 provided.
MODEL GW-100 SERVICE & PARTS MANUAL Rev. 1.00 01/17/08 Page 6

Parts Manual
5. Troubleshooting
PROBLEM LIKELY CAUSE SOLUTION
The soap tank water
temperature low Thermostat malfunction Replace
Thermostat set too low Turn thermostat up
Bad heater Replace
Float switch malfunction Remove and replace
Water supplied to machine low Must provide 140°F
Rinse spray arms dirty Clean spray arms with cleaning
drill and brush provided
Shut-off valve on supply line may
be closed Open valve
Low or no pressure in
rinse spray arms
Spray arm pressure low Minimum 20-100PSI flow pressure
required
No rinse arm water Rinse solenoid valve non-
operational Check coil
Check and install rebuild kit
Replace if necessary
Solenoid valve strainer or
restrictor disc plugged Remove screen and clean- replace or clean flow restrictor
Product containers filling
with water Plugged rinse arms Clean
Worn flow restrictor in solenoid
valve Replace
No chemical being
dispensed Empty product in containers Refill containers
Chemical lines plugged Flush lines with hot water and
condition of chemical
Strainer on pick-up tube plugged Clean with hot water
Circuit board setting too low Increase by turning clockwise
while machine is running/filling
No power to pump Check LED signal, all electrical
connections
Pump motor or circuit board
defective Replace pump motor or circuit
board
Soap tank continues to fill
with water with power off Leaking solenoid valve diaphragm. Inspect and clean seat
Replace diaphragm kit
Install new valve
MODEL GW-100 SERVICE & PARTS MANUAL Rev. 1.00 01/17/08 Page 7

Parts Manual
MODEL GW-100 SERVICE & PARTS MANUAL Rev. 1.00 01/17/08 Page 8
PROBLEM LIKELY CAUSE SOLUTION
Moisture, condensation,
wet areas behind service
door
Pump seal leaking Replace
Detergent tank drain screen
plugged Clean
Primary drain plugged Clean
Rinse water drain line backing up Clear obstruction, clean machine
Return screen in soap detergent
tank plugged Clean
Covers on detergent tank are not
installed properly causing
condensation
Position all top covers to
completely cover top of tank
Wheel not turning Power off at circuit breaker Reset circuit breaker
Drive motor defective Replace
Micro switch on switch support
bracket faulty or not making
contact
Replace or make adjustment to
switch
Conveyor not engaged with drive
gear Position properly.
Low or no pressure
coming from wash arms No or low water in soap tank
Check water supply
Check tank stand pipe position
Check that fill switch is in On-Fill
position and that tank fills with
water
Check float switch operation
Check hot fill solenoid is
operational
Obstruction in wash arm Clear obstruction
Wash Pump not running Check power supply
Check pump capacitor
Replace pump
Pump running but no pressure to
wash arms. Inspect the impeller
Replace if needed
Water spraying out
conveyor entrance Spray arms not locked in place Spray arms must be pushed firmly
on to hub connection on spray
base
Spray arms plugged Clear and clean with cleaning drill,
scraper, and brush
Splash curtain not in position Install or adjust
Machine in operation without any
glasses on conveyor Operate machine with a full load of glasses

Parts Manual
6. Electrical Diagram
MODEL GW-100 SERVICE & PARTS MANUAL Rev. 1.00 01/17/08 Page 9
POWER
ON/OFF
ROCKER
SWITCH
HEATER
NC
NO
C
13
6
4
79
B
A
NC
NO
C
12
4
3
56
8
7
TRANSFORMER
CONVEYOR
MOTOR
RINSE
SANI
PUMP
MOTOR
RINSE
SOLENOID
VALVE
WASH
SOLENOID
VALVE
CONVEYOR
SHUT-OFF
SWITCH
240V
24V
SANI PRIMER RINSE PRIMER DETERGENT PRIMER
CIRCUIT BOARD
CIRCUIT BOARD CIRCUIT BOARD
DET
FLUSH
123
6
LEVEL CONTROL TIMER
FILL/HEATER RELAY SANI/RINSE RELAY L1
N
GROUND
G
NC
NO
C
12
4
3
56
8
7
DET RELAY
FLOAT
SWITCH