Whirlpool Electronic Dryer Service Manual download pdf (Page 23)

3-1

PRODUCT OPERATION

THEORY OF OPERATION

HEATER OPERATION

This dryer uses a dual element heater. De-

pending on the selected temperature, either

one or both of the elements will be in the circuit

during the drying mode.

In the Normal temperature setting, both ele-

ments are in the circuit. One element (R1) is

controlled by the operating thermostat. As the

thermostat cycles, the second element (R2)

remains in the circuit, and maintains a consis-

tent operating temperature.

Manual Reset Thermostat

Self-Resetting Thermostat

Dual Heating Elements

In the Low temperature setting, a switch opens

the circuit to R2, and it is removed, and drying

takes place with the R1 element only.

SAFETY THERMOSTATS

A pair of safety thermostats is located on the

dual element housing. One is a manual reset

thermostat, (302°F (150°C)), and the other is a

self-resetting thermostat (194°F (90°C)).

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Whirlpool Electronic Dryer Service Manual Page 23