Truper COMP-10L, Manual

TROUBLESHOOTING

PROBLEM

The compressor is not working.

The motor buzzes but is not running or 

runs slowly.

The fuses blow

The circuit breaker is repeatedly 

activated.

CAUTION! NEVER USE AN EXTENSION 

CABLE WITH THIS UNIT!

The thermal overload protection 

repeatedly causes interruptions.

Pressure in the tank drops when the 

compressor stops.

Excessive humidity in the discharging 

air.

The compressor operates continuously.

The compressor vibrates.

Air output less than normal.

POSSIBLE CAUSE

1. No electricity.

2. Blown fuse in the installation.

3. Air check is open.

4. Thermal switch is activated.

5. Faulty Pressurestat.

1.  Voltage drop.

2.  Motor winding has a short or is 

open.

3. Faulty check valve or pressurestat.

4. Compressed air in the cylinder.

1.  Wrong fuse capacity.

2. Faulty check valve or pressurestat.

1.  Voltage drop.

2.  Blocked air filter.

3.  There is no adequate ventilation.  

Room temperature is too high.

1.  Loose connections (couplings, 

pipeline, etc.)

2.  Purge key is open.

3. Leaks in the check valve

1. Too much water in the tank.

2. High humidity

3. Admission filter is covered.

1. Faulty pressurestat.

2.  Excessive use of air

1. Loose mounting bolts

2. The tank rubber supports are missing 

or worn.

1. Open the purge key

2. Dirty admission filter.

3. There is a leak in the connection

SOLUTION

1. Is it connected? Check fuse-circuit 

breaker.

2. Replace blown fuse.

3. Restart and determine what caused the 

problem.

4. Push the thermal button to restart.

5. Contact a Truper Authorized Service 

Center.

1. Check with voltmeter. Minimum 

voltage: 115 V˜

2. Contact a Truper Authorized Service 

Center.

3. Contact a Truper Authorized Service 

Center.

4. Turn the ON / OFF switch into the OFF 

position around 15 seconds.  Then 

turn to the AUTO position. 

1. Verify you are using the right fuse. Use 

a time-delay fuse.  Disconnect other 

units using the same circuit or operate 

the compressor in an independent 

circuit.

2. Contact a Truper Authorized Service 

Center.

1. Check with voltmeter. Minimum 

voltage: 115 V˜

2. Clean the filter (see Maintenance 

section).

3.  Move the compressor to a 

well-ventilated area.

1. Check to detect air leaks. Use sealing 

tape in all the leaking connections.

2. Tighten the purge key

3. Disassemble the unidirectional valve.  

Clean and replace. Danger! DO NOT 

DISASSEMBLE THE CHECK VALVE 

WHEN THERE IS AIR INSIDE THE 

TANK. PURGE THE TANK FIRST.

1. Drain the deposit.

2. Move the compressor to a less humid 

area.  Use a filter in the air pipeline

3. Clean or replace the filter.

1.  Contact a Truper Authorized Service 

Center.

2. The compressor is not big enough to 

satisfy the CFM requirements of the 

pneumatic tool.

1.  Tighten

2.  Replace

1.  Pull the safety valve ring to clean the 

bolckage.

2.  Clean or replace admission filter.

3.  Tighten connections.

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