Series ’90 Refrigerated Bakery
Page 18
Pre-Service Checklist
Case Does Not Operate
Check for disconnected power supply.
Check for tripped breaker or blown fuse.
Check that the power switch and thermostat are not “off”
Lights Do Not Operate
Check that the light switch is on.
Be sure light is properly seated in the sockets.
Check that light cord(s) are tight 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 air flow. Lack of adequate cold air flow could be a defective evaporator
fan or blocked evaporator coil. Check that paper or foreign material is not blocking
evaporator. If the evaporator coil is blocked due to excessive frost, turn the
thermostat knob to the “off” position for approximately one hour to defrost.
Excessive frost will buildup if the case is operated with the door open or ajar.
Glass Fogging
Check room ambient- Case is designed to operate in an environment not to exceed
75F and 55% relative humidity.
Check case temperature- Case is designed to operate between 38F and 42F.
Check that nothing is blocking the warm air vents in the glass handle. Check that
warm air is being blown evenly across the front glass surface. If the air is not
blowing or is not blown evenly, service is required.
Check that the air flow is not being disturbed by a nearby fan or air duct.
Check that noting is placed on top of the glass case.
