Amana RCB Instruction Manual download pdf (Page 4)

Servicer’s Note

CAUTION

Avoid servicing the low ambient control

while the unit is operating. The rotating

fan blades could cause serious injury.

If measurement of the high side pressure is required, use

the liquid line valve on the outside of the unit. Also note

that most electrical measurements for the compressor

can be performed adequately near the contactor, rather

than at the compressor itself. If you must service the

area near the compressor or low ambient control with the

unit in operation, consider doing the following:

• Disconnect the electrical power

• Unplug the outdoor fan motor.

• Carefully reconnect the electrical power.

• Operate the compressor only long enough to com-

plete the needed service function.

NOTE: Running the system without outdoor airflow will

cause the head pressure to be substantially higher than

normal. Suction pressure and amp draw will also be

higher than normal. Subcooling, however, will be less

than normal.

outdoor fan will continue to run as long as the

compressor runs. During cool weather, the head

pressure will drop after the outdoor fan comes on. If

the head pressure drops to about 100 psi, the outdoor

fan will shut off. The head pressure will then begin

to rise. The outdoor fan will restart when the head

pressure rises to about 220 psi.

If any sparking, unusual odors, or unusual sounds are

noticed, immediately disconnect the electrical power

and check wiring and electrical components.

With the compressor running, it may be advisable to

perform a final leak check on the low ambient cutout and

nearby components. Before doing this, read the

“Servicer’s Note” section that follows.

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Amana RCB Instruction Manual Page 4