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Page Title:
Table 3-4. Air System Troubleshooting |
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 TM 5-6640-213-14
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. MOTOR FAILS TO START OR HUMS.
Step 1. Check for incorrect electrical current.
Pull plug, check for correct current as shown on
motor nameplate.
Step 2. Check for defective plug, cord, or switch.
Examine plug, cord, and switch. Replace if
defective.
Step 3. Check if unit is extremely cold.
Bring unit to room temperature before starting.
Assure the use of the proper weight pump oil for
ambient operating temperature.
2. MOTOR STOPS DURING OPERATION,
Step 1. Check for defective wiring.
Check wiring and correct.
Step 2. Check if current overload causes circuit
breaker switch CB 3 to open.
Locate and correct cause for overload, close
circuit breaker and restart motor.
Mechanical or electrical overload causes safety
Step 3.
overload device or motor to automatically turn
current off.
Locate and correct cause for overload. Allow unit
to cool before restarting.
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