Whirlpool JOB AID GC1SHAXM, Инструкция по установке и эксплуатации

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3-5
Defrost is controlled by the main control board,
and incorporates the use of the “pulsed” de-
frost. However, this defrost system is uniquely
different than other Whirlpool electronic refrig-
erators.
• Defrost is initiated by a different set of
criteria (listed below).
• The bimetal/thermofuse combination
switches off the defrost heater, and
provides additional defrost circuit pro-
tection.
• The defrost bimetal is placed on the
neutral side of the defrost heater, and
the thermofuse protects the “line” side
of the circuit.
• The electronic control does not “time-
out” and terminate the defrost cycle.
Defrost is terminated only by the open-
ing of the bimetal switch contacts, or the
opening of the thermofuse in case the
bimetal fails.
• The bimetal opens at 45
°
F ±5
°
(7
°
C ±3
°
)
and closes at 19
°
F ±5
°
(–7
°
C ±3
°
).
• The thermofuse will open at 162
°
F
(72
°
C).
The defrost cycle is initiated:
• When power is connected (after the
initial power-up) to the refrigerator and
the bimetal is closed (unit is cold).
• With no door openings.
- When 30 hours of compressor run
time, or 50 hours actual time, has
passed since the last defrost cycle.
DEFROST OPERATION
• If a door was opened.
- After 8 hours of cumulative compres-
sor run time.
• The compressor runs continuously for
at least 8 hours.
The following occurs when the defrost cycle
is initiated:
• Cooling function switches OFF (com-
pressor and both fans are OFF).
• The air-baffle/damper switches to the
CLOSED position.
• The heater starts to heat the evaporator
with the following timing:
- 5 minutes ON, 1 minute OFF.
- 3 minutes ON, 1 minute OFF repeat-
edly.
- Bimetal thermostat opens at 45
°
F ±5
°
(7
°
C ±3
°
).
When defrost bimetal thermostat opens:
• The defrost heater is switched OFF.
• The compressor is activated after
7 minutes of drip time.
• The condenser fan is activated 1 minute
after the compressor.
• The evaporator fan is activated after
10 minutes from bimetal opening, or
3 minutes after the compressor starts.
• The air baffle is opened 3 minutes after
the compressor is activated, or a total
time of 10 minutes from the bimetal
opening.