COMPRESSOR RUNNING HOT

TM 5-6640-214-14

Table 5-1. Air Compressor Troubleshooting Chart - Cont

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

5. COMPRESSOR RUNNING HOT

Step 1. Check for blockage of air to fan wheel.

Remove any object that is blocking the air passage.

Clean up and remove any accumulated dust or dirt.

6. COMPRESSOR RUNNING SLOW

Step 1. Check for Low line voltage, or a defective motor starter heater.

Correct line voltage if low, or tighten loose connections.

Step 2. Check for a leaking release valve.

Replace a leaking release valve.

(1) Removal of burned out muffle.

(a) Remove three screws (1, fig. 5-1) from sides of the case and remove the backplate (2).

(b) Remove loose insulation blocks (3).

which terminal wire goes. Withdraw the thermocouple (4) from the hole. Remove the metal air vent from the hole.

(d) Remove the nuts and the wires from the muffle terminals.

(e) Remove the terminal plate.

(f) Remove the insulating blocks at the back of the muffle carefully, laying out both layers so that they may be

installed in the same order that they were taken out. Grasp lead wires. Gently work the muffle (5) unit out. Remove the

insulating sleeves from the muffle lead wire.

5-3