Table 4-2. Troubleshooting-Continued
TEST OR INSPECTION
Motor Overload Relay Trips.
Check line voltage.
Check for leaking, broken, or carbonized valves, or restricted
Excessive Starting or Stopping.
Check the receiver check valve for defects.
Remove any dirt, dust, or blockage from seat. Replace defective
Check pressure switch for wear.
Check for blockage of air to fanwheel.
Remove any restriction to flow of air.
Check for defective check valve in receiver.
Clean or replace check valve as necessary.
Check for leaking, broken, carbonized, or loose valves.
Check for low line voltage or a defective starter heater.
Tighten loose connections.
Replace a defective motor starter or