Roper TOP-MOUNT REFRIGERATOR Specifications download pdf (Page 23)

OLD DESIGN 12 & 14 cu. ft. Top-Mount

THEORY OF OPERATION

MULLION AND STILE HEATERS

All refrigerators have a tendency to sweat around the door openings due to the differences between

the ambient room temperature and the cold compartments of the refrigerator. On “Old Design” units

low-wattage resistance heaters are installed to the front flange area of the cabinet to help prevent

sweating.

Stile Heaters

Stile heaters are foil-wrapped resistance-type heating elements in the 5 - 30 watt range. These

heating elements fit on the inside of the cabinet flange across the top of the freezer and about 1/3

of the way down both sides.

(Fig. 22)

Stile heaters are on 100% of the time the

refrigerator is plugged in, except during

the defrost cycle, or on models with power

saver switches. See the wiring diagrams

for units with stile heaters at the end of this

section.

Mullion Heaters

Mullion heaters are foil-wrapped resistance-

type heating elements in the 8 - 12 watt range.

These heating elements fit on the inside of the

rail that separates the refrigerator and freezer

sections.

(Fig. 23)

The mullion heater element is normally wired

in parallel with the stile heater element. It is on

100% of the time the refrigerator is plugged in,

except during the defrost cycle or on models

with power saver switches.

CABINET

HEATER ELEMENT

FOIL

Fig. 22

HEATER

ELEMENT

MULLION

FOIL

Fig. 23

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 107 108

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Roper TOP-MOUNT REFRIGERATOR Specifications Page 23