Troubleshooting - CMA Dishmachines UC 60e Installation & Operation Manual

3.4.
PROBLEM
The machine does not start
The machine does not load water
Unsatisfactory washing results
Glasses or dishes are not
completely dried
Streaks and spots on glasses
and dishes
The machine suddenly stops
during the cycle
During wash cycle the machine
stops and draws water
The booster pump can't prime
MODEL UC60e INSTALLATION & OPERATION MANUAL Rev. 1.00A

Troubleshooting.

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