11 fan replacement procedure, Maintenance – Alpha Technologies AlphaGen 5.0kW Auxiliary Power Unit User Manual

Page 52

3. Maintenance

031-132-B0-001 Rev. A

3.11 Fan Replacement Procedure

Allow 5 minutes (per fan) for completion of procedure.

Tools required:

Slotted screwdriver

Repair and/or replacement procedure:

End of Procedure

NOTE:

Perform this procedure after verifying the presence of correct fan

supply voltage (12VDC). Once the voltage has been verified,

remove power from the fan circuit(s) and perform the

replacement procedure as outlined below.

1. Open the rear door of the enclosure

2. Disconnect fan wire harness.

3. Use a slotted-head screwdriver to loosen

the two captive fasteners at the bottom

of the fan and airvane assembly housing.

NOTE:

During removal and

installation, verify airvane

tabs arent bent or

otherwise damaged.

4. Swing lower portion of assembly out.

5. Pull assembly free from opening

6. Replace with functional fan and airvane

assembly. Verify tab at top of fan/

airvane assembly engages into slot.

7. Tighten captive fasteners.

8. Reconnect fan wire harness.

9. Close rear cabinet door.