Overall Checking; Standard Operation Conditions; Auto Random Re-Start Function - McQuay CK20AR Installation Manual

Cooling only heat pump ceiling cassette split type air conditioner

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Table Of Contents

Table of Contents

• Ensure that :-

1) The unit has been mounted solidly and rigid in position.

2) Piping and connections are leak proof after charging.

3) Proper wiring has been installed.

• Drainage check - pour some water into the main drain pipe from the flexible drain hose.

• Test run

1) Conduct a test run after water drainage test and gas leakage test.

2) Check the following items :-

a. Is the electric plug firmly inserted into the socket ?

b. Is there any abnormal sound from the unit ?

c. Is there any abnormal vibration on the unit itself or piping ?

d. Is the drainage of water smooth ?

• Confirm that :

1) Condenser fan is running, with warm air blowing off the condensing unit.

2) Evaporator blower is running and discharge cool air.

3) The remote control incorporate a 3 minute delay in the circuit. Thus, it requires about 3 minutes before the outdoor

condensing unit can start up.

Cooling

Temperature

Minimum indoor

temperature

Maximum indoor

temperature

Minimum outdoor

temperature

Maximum outdoor

temperature

•

Disconnect from the main power supply before servicing the air conditioner unit.

•

DO NOT pull out the power cord when the power is ON. This may cause serious electrical shocks which

may result in fire hazards.

If there is a power cut when the unit is operating, it will automatically resume the same operating mode when the power is

restored. (Applicable only to units with this feature)

Before turning off the power supply, set the remote controller's ON/OFF switch to the "OFF" position to prevent the

nuisance tripping of the unit.

If this is not done, the unit's fans will start turning automatically when power resumes, posing a hazard to service

personnel or the user.

CK20A(1-16)ENG