Troubleshooting - PRETUL COMP-20LP Instructivo

Problem
The motor is not
working.
The motor is buzzing
but is not running or
runs slowly.
Fuses blow up.
The circuit switch is
triggered repeatedly.
Thermal overload
protection causes
interruptions
repeatedly.
Pressure in the tank
drops when the motor
stops.
Excessive humidity in
the discharge air.
The motor runs
continuously without
stopping.
The compressor
vibrates.
Air output lower to
normal.
10
ENGLISH
Cause
• No power. • Be sure the cable is connected. Check the fuse-circuit switch.
• Fuse is blown . • Replace the blown fuse.
• Thermal fuse is • Press the thermal switch button to restart.
activated.
• Pressurestat is faulty . • Go to a
• Tension Drop. • Check with a voltmeter. Minimum tension shall be 115 V
• Motor winding in short • Go to a
or open.
• Check valve or faulty • Go to a
pressurestat.
• Compressed air in the • Press the switch 15 seconds into the OFF position. Then, lift to the ON
cylinder. position .
• Wrong fuse capacity, • Check the right fuse is being used. Use a time delay fuse. Disconnect
overloaded circuit. other devices using the same circuit or operate the compressor using an
• Fault in the check independent circuit.
valve or pressurestat. • Go to a
• Tension drop.
• Clogged air filter.
• Lack of adequate ventilation.
• Environment temperature is
too high.
• Loose connections • Check to detect air leaks. Use sealant tape in all the leaky connections.
(couplings, pipes, etc.).
• Purge tap is open. • Tighten the purge key.
• Check valve leaks. • Disassemble the unidirectional valve. Clean or replace.
THE TANK. PURGE THE TANK FIRST TO RELEASE ALL THE PRESSURE.
• Excessive water in the tank.
• High humidity.
• Clogged entry filter .
• Faulty pressurestat. • Go to a
pressurestat.
• Excessive air use. • The compressor is not big enough to satisfy the CFM of the pneumatic
tool requirements being used.
• Loose mounting bolts.
• The tank rubber bases ae not
installed or are worn.
• The purge tap is open.
• Admission filter is dirty.
• Leak in a connection.

Troubleshooting

Solution
Authorized Service Center.
Authorized Service Center.
Authorized Service Center.
Authorized Service Center.
• Check with a voltmeter. Minimum tension shall be 115 V
• Clean the air filter.
• Move the compressor to an area with adequate ventilation.
• Move the compressor to an area with adequate temperature.
DANGER
DO NOT DISASSEMBLE THE CHECK VALVE WITH AIR IN
• Drain the tank opening the drain valve.
• Move the compressor to an area with less humidity. Use a filter
in the air pipes.
• Clean or replace filter.
Authorized Service Center to replace the
• Tighten all the bolts and screws.
• Install or replace the rubber bases.
• Tighten the purge tap.
• Clean or replace the admission filter.
• Tighten the connections. Check to detect air leaks. Use sealant
tape in all the leaky connections. Replace the damaged or broken
hoses.