Compressor Test
- Disconnect wiring from compressor and exhaust solenoid terminals. See Fig 1.
- Disconnect pressure line from dryer and attach air pressure gauge to dryer fitting.
- Connect 12 Volt power supply through ammeter to compressor.
- Current draw must not exceed 14 amps.
- Allow gauge to stabilize between 100-120 psi.
- Shut off compressor and observe if pressure leaks below 90 psi.NOTE: If compressor is allowed to run to maximum output pressure (120-180), the solenoid exhaust valve will act as a relief valve. This gives a FALSE indication of system leakage.
- If compressor operates correctly, reconnect wiring and air lines.