Fini Pulsar Série Manuel Utilisateur page 23

10. POSSIBLE FAULTS AND RELATED PERMITTED REMEDIES
Request the assistance of a qualified electrician for operations on electric components (cables, motor, pressure
switch, electric panel, etc).
FAULT
Air leak from the valve of the
pressure switch.
Reduction of efficiency,
frequent start-up. Low
pressure values.
The motor and/or the
compressor overheat
irregularly.
After an attempt to start the
compressor, it stops due to
tripping of the thermal cutout
caused by forcing of the
motor.
During operation, the
compressor stops for no
apparent reason.
When operating, the
compressor vibrates and
the motor emits an irregular
buzzing sound. If it stops, it
does not restart although the
sound of the motor is present.
Irregular presence of oil in the
network.
Leaking of condensate from
the vent cock.
Any other type of operation must be carried out by authorized Service Centers, requesting original parts.
Tampering with the machine may impair its safety and in any case make the warranty null and void.
Prematic AG, 9556 Affeltrangen
CAUSE
Check valve does not perform its
function correctly due to wear or dirt
on the seal.
Condensate drainage cock open.
Rilsan hose not inserted correctly in
pressure switch.
Excessively high consumption.
Leaks from joints and/or pipes.
Clogging of the suction filter.
Slipping of the belt.
Insufficient ventilation.
Closing of air ducts.
Insufficient lubrication.
Start-up with head of the compressor
charged.
Low temperature.
Voltage too low.
Incorrect or insufficient lubrication.
Inefficient electrovalve.
Tripping of the thermal cutout of the
motor.
Electric fault.
Single-phase motors:
faulty capacitor.
3-phase motors:
One of the phases of the 3-phase
power supply is missing due probably
to blowing of a fuse.
Too much oil inside the unit.
Wear on segments.
Presence of dirt/grit inside the cock.
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REMEDY
Clean the pad inside the check valve
or replace it if worn. To access the pad,
unscrew the hex-shaped head of the check
valve, clean the housing. Re-assemble and
tighten carefully (figures 38-39).
Close the condensate drainage cock.
Insert the Rilsan hose correctly inside the
pressure switch.
Decrease the demand of compressed air.
Change gaskets.
Clean/replace the suction filter
(figure 27-28).
Check belt tension (fig. 34).
Improve ambient conditions.
Check and if necessary clean the air filter.
Top up or change oil.
Release the compressor head by using the
pressure switch push button.
Improve ambient conditions.
Check that the mains voltage matches that
of the dataplate. Eliminate any extensions.
Check level, top up and if necessary change
the oil.
Call the Service Center.
Check level oil.
Check belt tension.
If the fault persists, call the Service Center.
Reset the thermal cutout and restart (see
section 1, paragraph titled "Tripping of the
thermal cutout").
Call the Service Center.
Have the capacitor replaced.
Check the fuses inside the electric panel
or the electric box and if necessary replace
those that have been damaged (fig. 40).
Check oil level.
Call the Service Center.
Clean the cock.
G
B