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OPERATING THERMOSTAT
Refer to page 4-45 for the procedure for ser-
vicing the operating thermostat.
The operating thermostat monitors the exhaust
temperature. The changes in thermostat tem-
perature causes the operating thermostat to
maintain the desired temperature.
1. Make sure that the dryer is empty and that
the lint screen is clean.
2. Close the dryer door and turn the dryer on.
3. The operating thermostat should cycle off
between 150° and 155°F. If the operating
thermostat is open below this temperature,
replace the thermostat. If the operating
thermostat does not open at the described
temperature, replace the thermostat.
4. Hold a glass bulb thermometer capable of
reading from 32°C to 82°C (90° to 180°F)
in the center of the exhaust outlet. Mea-
sure the exhaust temperatures with the
heater on and off. The correct exhaust tem-
peratures for the various settings are
shown in the following chart.
TEMPERATURE
SETTING
HIGH
MEDIUM
HIGH
MEDIUM
L O W
EXTRA
L O W
5. If the exhaust temperature is not within the
specified limits, replace the operating ther-
mostat.
5-12
HEAT TURNS
HEAT TURNS
O F F
O N
68° C ±6°
(155° F ±10°)
66° C ±6°
6 - 8° C
(150° F ±10°)
(10 - 15° F)
60° C ±6°
below the heat
(140° F ±10°)
turn off
52° C ±6°
temperature
(125° F ±10°)
41° C ±3°
(105° F ±5°)
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