Refrigerated Self-Serve Merchandiser (High Profile)
Page 27
Pre-Service Checklist
You may avoid the cost and inconvenience of an unnecessary service call by first reviewing
this checklist of frequently encountered situations that can cause unsatisfactory case
performance.
CAUTION:
Before servicing case turn off power at the main breaker of fuse box.
Case Does Not Operate
-Check for disconnected power supply.
-Check for tripped breaker or blown fuse.
Case Temperature Too Warm
-
Check that top air discharge grill and/or bottom air intake grill are not blocked.
-Check for a blocked or dirty condenser coil.
-Check that there are no outside air disturbances in or around cases. These
disturbances can be caused by nearby doors or entrances, overhead ceiling fans
or air diffuser vents, direct sunlight, or other heat sources. The location of open
refrigerated merchandisers is critical to case performance.
-Make sure that warm product is not being installed inside the case. All product
must be pre-chilled prior to loading for proper case performance.
-Check temperature/pressure control for proper settings.
-Check cold air flow. Lack of or no air flow may indicate a blocked evaporator
coil or defective evaporator fan motor. Contact a qualified service company if
there is no air flow inside case.
Lights Do Not Operate
-
Check that light
switch located in top light housing is “on”.
-Check that all optional shelf light cords are securely plugged into sockets in back
panel.
-Check that all light bulbs are properly seated in the light holders.
Overflow of Condensate Evaporator
-Check that drain line is properly located over the water reservoir.
-Check that store conditions do not exceed 75° and/or 55% relative humidity for
prolonged periods of time.
-Check that condensate pan heaters are operating. Exterior base of condensate
pan should be evenly warm on both long sides of pan.
