Roper TOP-MOUNT REFRIGERATOR Specifications download pdf (Page 10)

MULLION EVAPORATOR DESIGN 12 cu. ft. Top-Mount

THEORY OF OPERATION

TEMPERATURE CONTROL

Temperature control is provided by an adjustable thermostat located behind the control panel es-

cutcheon in the refrigerator compartment.

(Fig. 6)

This thermostat influences the temperatures in

both the freezer section and the refrigerator section. There is no damper to adjust air flow between the

two sections.

DEFROST HEATER

The defrost heat is provided by a quartz tube radiant heater

(Fig. 7)

lying underneath the evaporator

coils in the divider mullion.

(Fig. 8)

A coiled wire element is encased in a quartz tube. Special care

must be taken when handling this heater element to insure that the quartz tube does not come in

contact with any contaminants such as skin oil, perspiration or lubricants. Always wear a pair of clean

gloves when handling the defrost heater assembly. Contaminating the surface of the quartz tube will

cause premature failure.

Fig. 6

Fig. 7

Fig. 8

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Roper TOP-MOUNT REFRIGERATOR Specifications Page 10