CMA Dishmachines UC60E Original operating instructions

MODELUC60e
INSTALLATION & OPERATION
Rev 1.00A
DISTRIBUTED EXCLUSIVELY BY
CMA DISHMACHINES
12700 KNOTT AVENUE
GARDEN GROVE, CALIFORNIA 92841
800-854-6417
FAX [phone]
www.cmadishmachines.com

TABLE OF CONTENTS
MODEL UC60e
1. SPECIFICATIONS ........................................................................................ 2
1.1. MODEL UC60E ...................................................................................................................... 2
2. GETTING STARTED..................................................................................... 3
2.1. RECEIVING AND INSTALLATION.............................................................................................. 3
2.1.1. Electrical ....................................................................................................................... 3
2.1.2. Plumbing........................................................................................................................3
2.1.3. Rinse aid dispenser........................................................................................................ 3
2.1.4. Detergent dispenser....................................................................................................... 4
2.1.5. Temperature Adjustments.............................................................................................. 4
2.1.6. Drain Pump. .................................................................................................................. 4
3. OPERATION................................................................................................. 5
3.1. CONTROL PANEL AND RELATIVE SYMBOLS........................................................................... 5
3.2. STARTUP PROCEDURES........................................................................................................... 5
3.3. PREVENTIVE MAINTENANCE.................................................................................................. 6
3.3.1. Regular Maintenance..................................................................................................... 6
3.3.2. Special Maintenance...................................................................................................... 6
3.4. TROUBLESHOOTING................................................................................................................ 7
4. ELECTRICAL DIAGRAM.............................................................................. 8
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1. Specifications
METRIC
EQUIVALENT
1.1. Model UC60E
WATER CONSUMPTION
PER RACK .7 GAL. (2.6L)
PER HOUR 35/21/14/8 GAL. (130/78/52/31 L)
OPERATING CYCLE
WASH TIME-SEC 40/100/160/280 40/100/160/280
RINSE TIME-SEC 15 15
DWELL 5 5
TOTAL CYCLE 1/2/3/5MIN. 1/2/3/5MIN.
OPERATING CAPACITY
RACKS PER HOUR 50/30/20/12 50/30/20/12
WASH TANK CAPACITY 6.87 GAL. (26 L)
WATER REQUIREMENTS 140°F (60°C)
WATER INLET 3/4” -
DRAIN CONNECTION 1” -
RINSE PRESSURE SET 25 PSI 1.76 kg/cm2
CYCLE TEMPERATURES
WASH-°F 155°F – 160°F (68°C/71°C)
RINSE-°F 180°F – 195°F (82°C/90°C)
FRAME DIMENSIONS
DEPTH 24” (61 cm)
WIDTH 23-5/8 (60 cm)
HEIGHT 33- 7/16” (85 cm)
MAX CLEARANCE FOR DISHES 13-3/4” (35 cm)
ELECTRICAL RATING* 220/240
VOLTS
1 PH—60 Hz
30 AMPS
MODEL UC60e INSTALLATION & OPERATION MANUAL Rev. 1.00A Page 2

Getting Started
2. Getting Started
2.1. 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. After removing the packing, ensure that the appliance has
not been damaged in transport. If it has, inform the retailer. Set the machine in place, and level
from side-to-side and front-to-back.
2.1.1. Electrical1
Single-phase 230 volt, 60 Hz dedicated circuit should be used to supply electrical energy to the
UC60 dishwasher (see specification sheet page 2). This system requires two power wires. An
additional third wire must be provided for ground. CMA and local codes require the UC6060 to be
hardwired using a proper gauge copper wire. 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.
2.1.2. Plumbing2
Each machine is provided with a rubber hose with a ¾" threaded attachment for water filling. A
140°F water line should be plumbed to this point. 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 UC60 must be a minimum of 140°F at 30 PSI (Pounds per Square Inch).
If it is less than 30 PSI dynamic pressure a pressure pump must be installed to guarantee optimal
machine operation. If, however, the water supply pressure is greater than 60 PSI, a pressure reducer
must be installed.
Connect the drain hose, supplied with the appliance to the drain union in such a way that water flows
freely (insuring a minimum slope). A drain pump is provided to empty the water at a level below
the machine drain. The drain hose should be connected to a trap to prevent odor back -up from
the screen.
2.1.3. Rinse aid dispenser.
The machine is equipped with a rinse aid dispenser, which automatically draws the product. To
carry out priming, start the machine and do a few complete wash cycles or press adjustment
screw repeatedly. Operating the fine-adjustment screw on the dispenser can regulate the amount
dispensed from 0 to 4cc,equivalent to 0-11inches (0-30cm) drawn into chemical line. Reduce the
amount by turning the screw clockwise, increase by turning it counterclockwise.
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
MODELUC60E SERVICE & PARTS MANUAL Rev. 1.00 Page 3

Getting Started
2.1.4. Detergent dispenser.
The machine is equipped with a detergent dispenser, which automatically draws the product.
Detergent has been pre-wired prior to the shipment. Refer to wiring diagram on the page 8 for
detergent dispenser connection.
Chemical output line is connected to the injector on the back of the machine. Insert chemical
input line with the filter in detergent container. Prime detergent dispenser and proceed to
dispense. Detergent dispenser capacity can be adjusted using a screwdriver. Every 13/16 inches
(2 cm) of product drawn into chemical line corresponds to 0.25 cc.
2.1.5. Temperature Adjustments.
Booster heater temperature adjustment always has priority over that of the wash tank, and both
cannot be switched on at the same time. During wash pump operation the wash tank heating
element doesn’t work.
The temperature adjustment outputs are kept off in the following cases:
• Temperatures measured are below 41°F (5°C).
• There is a fault.
• There is no water.
The recommended temperatures are 160°F (71 °C) for the wash cycle (tank) and 180°F (82,2°C)
for the rinse cycle.
2.1.6. Drain Pump.
The machine is equipped with a drain pump. Pay particular attention the position of the drain
hose, which should not be higher than 31 inches (0.8 cm). To empty the wash tank turn off the
machine by pressing the main switch, pull out the overflow tube inside the water tank and leave
the door open. Than keep manual drain button pressed until water tank is completely empty.
During the wash/Rinse cycle, excess water will automatically be drained.
MODEL UC60e INSTALLATION & OPERATION MANUAL Rev. 1.00A Page 4

Operatation
3. Operation
3.1. Control Panel And Relative Symbols.
The purpose of these specifications is to describe card operation.
To simplify the description of the various functions, the layout of the control panel and the various
functions assumed by the keys according to the function mode is given below.
Functions of keys during normal operation:
A: Cycle Start - Cycle Stop - Cycle Selection 1-2-3 - Self-cleaning;
B: On/Off (Stand-By) - Cycle Stop - Alarm Reset;
C: Regeneration (optional) - Cold rinse selection (when provided for);
D: Drain (when provided for).
3.2. Startup Procedures
• Insert the overflow tube in the special seat inside the wash tank.
• Check that the suction filter inside the wash tank is correctly fitted in its seat.
The filter must be cleaned after every 20 wash cycles and whenever necessary.
DO NOT use the appliance without the filters
• Close the dishwasher door.
• Insert the rinse aid dispenser line in the liquid container and check for the
quantity of the additive.
• Turn on main water valve.
• Turn on the appliance by pressing push button (B) on the control panel.
The green LED lights up. The machine will automatically fill the water tank to the proper level tank,
and then the heating phase begins. Indicator comes on when the water temperature is reached.
• Insert the rack filled with dishes to wash. The plates must be correctly placed in the rack.
• Select the wash cycle required by pressing button (A) keeping it pressed for
more than 5 seconds and release when the LED of the required cycle lights up. The green
LED of the selected cycle lights up (1, 2, 3).
• Start the cycle by pressing the key (A) for not more than 1sec.Operation is signaled by the
indicator of the selected cycle flashing. At the end of the cycle the indicator stops flashing
MODELUC60E SERVICE & PARTS MANUAL Rev. 1.00 Page 5

Operatation
and the message (END) appears on the display.
• The appliance is now ready for a new wash.
Note:the machine does not accept other cycles until the door is opened or the key (A) is pressed
twice.
• At the end of the day, clean the machine (see "Preventive Maintenance").
3.3. Preventive Maintenance.
3.3.1. Regular Maintenance.
In order to ensure perfect performance, the appliance must be completely cleaned at least once a day
in the following way:
• Turn off the dishwasher by pressing the key (B) and put the machine on stand-by.
• Turn off main water valve.
• Remove the overflow tube, press push button (D),andthepumpoperatesforthetimesetin
programming.The drain pump is activated in the following way:
• activation of a 5sec delay at start;
• activation of the drain pump for the time set in programming, up to the level indicated by the
pressure switch.
• Remove the filters and clean it with a brush under running water.
• Remove the spray arms loosening the fixing screws, and thoroughly clean the nozzles and
cleaning and rinsing arms under running water.
• Reassemble all parts and refit the spray arms in their seats, fixing them with the relative
screws.
• Clean the tank thoroughly.
Do not use bleach or chlorine based detergents.
At the end of the day, it is advisable to leave the dishwasher door open.
Note: It is advisable to replace the tank water by refilling the tank at least every 20 wash cycles, or
twice a day. Do not use metal brushes or corrosive products, which can damage the machine.
3.3.2. Special Maintenance.
Once or twice a year have a qualified technician inspect the machine:
• Clean the solenoid valve filter
• Remove scale from the heating elements
• Check the tightness of the seals
• Check condition and/or wear of the components
• Check operation of the dispenser
MODEL UC60e INSTALLATION & OPERATION MANUAL Rev. 1.00A Page 6

Operatation
3.4. Troubleshooting.
PROBLEM LIKELY CAUSE SOLUTION
The machine does not start Main Switch turned off Turn switch on
Water valve is closed Open main water valve
The spray arm nozzles or the solenoid filter is
clogged
and/or caked with lime deposits
Clean the rinsing arm nozzles, the pipes and the filter.
The machine does not load water
Faulty pressure switch Replace the pressure switch
The washing nozzles are clogged or the washing arms do
not rotate Unscrew and clean the nozzles and the rotation
shaft, refit them correctly in their seats
Detergent concentration too low Use non-foaming detergent or use less
detergent
Fats or starches are not removed Detergent concentration too low
The filter is too dirty Remove the filter, clean it with a brush under running water
and refit in its seat
Check the tank temperature (it must be about 160°F)
A
djust the thermostat or check correct heating
element operation
Length of washing cycle inadequate for type of grime
build-up Choose a longer cycle if possible, otherwise repeat wash cycle
Unsatisfactory washing results
Wash water too dirty Empty water from the tank, clean filters; refill the tank
and correctly refit the filters
Insufficient rinse aid Increase the amount of rinse aid by turning the screw
on the dispenser
The rack is unsuitable for the glasses and dishes Use a suitable rack enabling the dishes to be tilted so
water can run off
The dishes may have been inside the tank for too long
A
s soon as the wash cycle is finished, pull the rack out
immediately, allowing the air to dry the glasses and
dishes more quickly
Rinse water temperature is less than 180°F (82°C) Check the temperature of the booster thermostat
Glasses or dishes are not
completely dried
Machine is fed with cold water Use longer cycle
Too much rinse aid
Decrease the amount of rinse aid by turning the
fine-adjustment screw on the dispenser
Check the water hardness
The water is too hard
Water should not be harder than 5-10 °f
Streaks and spots on glasses
and dishes
Salt present in dishwasher tank Thoroughly clean and rinse the appliance, and avoid spilling
salt when filling the container
The machine is connected to an overloaded circuit Connect the machine separately (call the Technical
A
ssistance service)
The machine suddenly stops
during the cycle
A
safety device has been activated Check safety devices (call the Technical Assistance
service)
Water from the previous day has not been replaced Empty the tank and refill it
The tank water temperature is too high
Faulty pressure switch Have the Technical Assistance service check the
thermostat and the pressure switch
During wash cycle the machine
stops and draws water
The overflow tube is incorrectly positioned Remove the overflow tube and correctly reposition it
The booster pump can't prime Little pressure on feeding Remove the boiler pipe and drain the pump
MODEL UC60e INSTALLATION & OPERATION MANUAL Rev. 1.00A Page7

Electrical Diagram
4. Electrical Diagram
MODEL UC60e INSTALLATION & OPERATION MANUAL Rev. 1.00A Page8