Pre-Service Checklist
Cases Does Not Operate
Check for disconnected power supply.
Check for tripped breaker or blown fuse.
Check that the power switch and thermostat displays
are not “off”.
Lights Do Not Operate
Check that light switch is
“on”.
Be sure light is properly seated in the sockets.
Case Temperature Too Warm
Check that the cold air inlet and outlet slots are not blocked.
Be sure front glass is closed tightly and back doors are closed.
Check for a blocked or dirty condenser coil.
Check cold airflow. Lack of adequate cold airflow could indicate a
defective evaporative fan or a blocked evaporator coil. Check that paper or foreign
materials are not blocking evaporator. If the evaporator coil is blocked due to excessive
frost, turn the temperature setting to “0” (“off”) position for approximately one hour to
defrost. Excessive frost can buildup if the case is operated with the doors open for
extended periods of time.
Glass Fogging
Checkroom ambient
– Case is designed to operate in an environment not to
exceed 75ºF and 55% relative humidity.
Check case temperature
– Case is designed to operate between 36ºF and
42ºF.
Check that the airflow is not being disturbed by a nearby fan or air duct.
Check that nothing is placed on the top of the case glass.
Overflow of Condensate Evaporator
A high wattage heater is used to eliminate the evaporator condensate.
The heater shuts off automatically when the water level in the pan drops.
If the pan is overflowing . . .
Check that float moves freely inside water reservoir and activates float
switch.
Check that drain line terminates properly over water reservoir.
Check room ambient conditions. Room environment should not exceed
75ºF ambient and 55% humidity conditions.
Market Deli Refrigerated Cases
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