Series
’9
0 Refrigerated Bakery
Page 19
CAUTION:
Before servicing case turn off power at the
main breaker or fuse box.
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.
1.
Case Does Not Operate
a.
Check for disconnected power supply.
b.
Check for tripped breaker or blown fuse.
c.
Check that the power switch and thermostat are not “off”
2.
Lights Do Not Operate
a.
Check that the light switch is on.
b.
Be sure light is properly seated in the sockets.
c.
Check that light cord(s) are tight in the sockets.
3.
Case Temperature Too Warm
a.
Check that the cold air inlet and outlet slots are not blocked.
b.
Be sure front glass is closed tightly and back doors are closed.
c.
Check for a blocked or dirty condenser coil.
d.
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
build-up if the case is operated with the door open or ajar.
4.
Glass Fogging
a.
Check room ambient- Case is designed to operate in an environment not to exceed 75F
and 55% relative humidity.
b.
Check case temperature- Case is designed to operate between 38F and 42F.
c.
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.
d.
Check that the air flow is not being disturbed by a nearby fan or air duct.
e.
Check that noting is placed on top of the glass case.
Summary of Contents for SNR48
Page 30: ...Series 90 Refrigerated Bakery Page 30 WIRING DIAGRAM SNR77SC 2...
Page 31: ...Series 90 Refrigerated Bakery Page 31 WIRING DIAGRAM SN48 3SC 2...
Page 32: ...Series 90 Refrigerated Bakery Page 32 WIRING DIAGRAM SN59 3SC 2 SN77 3SC 2...
Page 33: ...Series 90 Refrigerated Bakery Page 33 WIRING DIAGRAM SN4CD...
Page 34: ...Series 90 Refrigerated Bakery Page 34 WIRING DIAGRAM SN6CD...
Page 35: ...Series 90 Refrigerated Bakery Page 35 WIRING DIAGRAM SN8CD...
Page 37: ...Series 90 Refrigerated Bakery Page 37 WIRING DIAGRAM SNR77R 2 OBSOLETE1 1 2012...
Page 38: ...Series 90 Refrigerated Bakery Page 38 WIRING DIAGRAM SN48 3R 2 OBSOLETE1 1 2012...
Page 39: ...Series 90 Refrigerated Bakery Page 39 WIRING DIAGRAM SN59 3R 2 SN77 3R 2 OBSOLETE 1 1 2012...
Page 40: ...Series 90 Refrigerated Bakery Page 40 WIRING DIAGRAM SN4CDR OBSOLETE 1 1 2012...
Page 41: ...Series 90 Refrigerated Bakery Page 41 WIRING DIAGRAM SN6CDR OBSOLETE 1 1 2012...
Page 42: ...Series 90 Refrigerated Bakery Page 42 WIRING DIAGRAM SN8CDR OBSOLETE 1 1 2012...
Page 44: ...Series 90 Refrigerated Bakery Page 44 REV CHANGE RECORD APP D DATE ECN...
