Service manual

Electrical Specifications Section 7
7-4
Drain Pan Heater Element
Function
Warms the drain pan to allow moisture to drain
Specifications
Model
°
°°
°F/°
°°
°C
Volt Amp Watt Ohm
20/-6.7
45/7.2
115
115
3.5
3.5
400
400
30-34
30-34
70/21.1 230 1.73 400 130-135
Check Procedures
1. Turn off the electric power to the reach-in
freezer.
2. Disconnect the leads to the defrost heater and
check across with an ohmmeter. See
specifications (above) for ohm values.
Result of check Action
Continuity and ohm value
within specifications
Element is OK
No continuity Replace the element
Ohm value not within
specifications
Replace the element
See page 9-6 for replacement procedures
Anti-Condensate Door Heaters
Function
Prevents condensation (sweating) on the cabinet and
door surfaces.
Specifications
Heater Type Ohm Reading
(total)
Refrigerator
Full Door(s)
2.5 Watts
per foot
30
Ohm
Refrigerator
Half Doors
1.6 Watts
per foot
20
Ohm
Freezer
Full Door(s)
5.0 Watts
per foot
14
Ohm
Freezer
Half Doors
3.7 Watts
per foot
50
Ohm
Check Procedures
1. Turn off the electric power to the reach-in.
2. Disconnect the mullion heater leads. Check
with an ohmmeter. See specifications (above)
for ohm values.
Results of Check Action
Continuity and ohm
value within
specifications
Heater is OK
No Continuity Replace the heater
Ohm value not within
specifications
Replace the heater
See page 9-16 for replacement procedure.