Movincool Office Pro 12 / Office Pro 18 / Office Pro 24 Service Manual download pdf (Page 54)

Repair Section

8.8 Inspection of Fan Motor

(1) Condenser fan motor

• Measure resistance across the terminals of the

fan motor. (All terminals must be disconnected

from the unit.)

• Between terminals (at 77 °F (25 °C))

- J6-CF11 Approx. 3.5 ohm

- J6-CF12 Approx. 6.0 ohm

- CF11-CF12 Approx. 9.1 ohm

• If the measured resistance is not equal to these

standard values, replace the fan motor.

(2) Evaporator fan motor

• Measure resistance across the terminals of the

fan motor. (All terminals must be disconnected

from the unit.)

• Between terminals (at 77 °F (25 °C))

- J8-CF21 Approx. 7.6 ohm

- J8-CF22 Approx. 10.4 ohm

- CF21-CF22 Approx. 17.7 ohm

• If the measured resistance is not equal to these

standard values, replace the fan motor.

8.9 Inspection of Compressor Motor

• Measure resistance across the terminals of the

compressor motor. (All terminals must be

disconnected from the unit.)

• Between terminals (at 77 °F (25 °C))

- R-C Approx. 0.4 ohm

- C-S Approx. 0.6 ohm

- S-R Approx. 0.9 ohm

• If the measured resistance is not equal to these

standard values, replace the compressor. The

overload relay is internal to the compressor.

I001775

Condenser Fan Motor

Ground (Green/Yellow)

J5 Low (Red)

CF12 (Brown/White)

CF11 (White or Orange)

J6 High (Black)

I001774

Evaporator Fan Motor

Ground (Green/Yellow)

J7 Low (Red)

CF22 (Brown/White)

CF21 (White)

J8 High (Black)

I001945

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Movincool Office Pro 12 / Office Pro 18 / Office Pro 24 Service Manual Page 54

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