CONDENSER FAN AND MOTOR MAINTENANCE

TM 9-4120-430-14

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UNIT MAINTENANCE

AIR CONDITIONER, COMPACT, HORIZONTAL

CONDENSER FAN AND MOTOR MAINTENANCE

TEST, REMOVAL, DISASSEMBLY, INSPECTION, ASSEMBLY, AND INSTALLATION

INITIAL SETUP:

Tools and Special Tools

Tool Kit, General Mechanics (Item 1, Table 2, WP 0067 00)

Materials/Parts

Grease, General Purpose (Item 28, Table 1, WP 0069 00)

Test Equipment

Multimeter

References

Wire lists and Schematic Diagram (WP 0038 00)

Personnel Required

One

Equipment Condition

Power disconnected from unit.

Top cover removed (WP 0018 00)

Condenser discharge louver removed (WP 0021 00)

NOTE

Refer to Direct Support Maintenance (WP 0063 00) for an alternate procedure for

removing the condenser fan and motor from the unit housing.

WARNING

Ensure power source is disconnected.

TEST

Remove black lead and red lead from condenser fan motor B3. Refer to wire lists and schematic diagram (WP 0038

Using an ohmmeter set on lowest ohms scale, check continuity between black lead and red lead on motor.

Continuity should be indicated between these leads.

Rotate motor shaft very slowly and check for smooth and quiet operation of shaft. Shaft should rotate smoothly and

should not make grinding or binding noises.

If condenser motor fails any of the above tests, motor must be replaced.

REMOVAL

Verify labels and disconnect all wires from condenser fan motor being replaced. Refer to wire list and schematic

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