Disassembly - Maytag Amana PTC A Series Service Instructions Manual

DISASSEMBLY

WARNING
S-122 REVERSING VALVE
Occasionally the reversing valve may stick in the heating or
cooling position or in the mid-operation.
When stuck in the mid-position, part of the discharge gas from
the compressor is directed back to the suction side resulting
in excessively high suction pressure.
Check the operation of the valve by starting the system and
switching the operation from COOLING to HEATING and then
back to COOLING.
If the valve fails to change its position, test the voltage (230 V.
or 265 V.) at the valve coil connector cap, while the system is
on the HEATING CYCLE.
WARNING
SET THE THERMOSTAT ALL THE WAY COUNTER-
CLOCKWISE TO PREVENT THE FAN FROM
SUDDENLY COMING ON AND ENDANGERING
THE SERVICER'S HANDS.
If no voltage is registered to the coil, check the operation of the
reversing relay and the continuity of the connecting wires.
If voltage is registered at the coil, tap the valve body lightly
while switching the system from HEATING to COOLING etc. If
this fails to cause the valve to switch position, remove the coil
connector cap and wiring and test the continuity of the valve
coil. If the coil does not test continuous replace it.
If the valve is inoperative, replace.
SOUND LEVEL
Noise complaints are frequently caused by a faulty installation
or by the customer's lack of knowledge and information.
Sources of actual noise may be traced to operational compo-
nents, tubing vibration, or misalignment of case or sleeve with
chassis.
COMPONENT REPLACEMENT
Replacement of the compressor, evaporator, condenser, capil-
lary tubes and reversing valve must be in accordance with ac-
cepted service practices. These procedures include a com-
plete evacuation of both high and low sides, and changing of
both strainer whenever the refrigerant system is opened.
Before replacing a component in the sealed system, make
sure that the cause for complaint does not lie in the electrical
circuit, control, overload or is due to some other reason. The
serviceman must be familiar with the operational characteris-
tics of the product and should not jump to conclusions.
FRONT COVER
1. Remove the two screws securing the front to the chassis.
NOTE: Not all installations will use these screws.
Holes to
secure front
2. Grasp the cabinet front as shown.
3. Pull the bottom of the cabinet front away from the chassis
until the retaining clips disengage.
4. Lift the cabinet front off the chassis. Reverse this proce-
dure to reinstall the cabinet front.
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