Zgonc Twister 4800 D Manual De Instrucciones página 13

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.
POSSIBLE FAULTS
AND RELATED PERMITTED REMEDIES
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
Unscrew the hex-shaped head of the check valve, clean
the housing and the special rubber disk (replace if worn).
Re-assembler and tighten carefully (figures 18a - 18b)
Close the Condensate drainage cock
Insert the Rilsan hose correctly inside the pressure switch
(fig. 19)
Reduce demand
Rework seals
Clean/replace the suction filter (figures 14a - 14b)
Check belt tension (fig. 17)
Improve ambient conditions
Check and if necessary clean the air filter
Top up or change oil
(figures 20a - 20b – 20c)
Discharge head of the compressor
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
Single-stage, mono-phase versions:
reset the thermal cutout (fig. 1) and restart (figures 2a
- 2b)
If the fault persists, call the Service Center
Versions with delta-star starter:
operate on the button of the thermal cutout located inside
the box of the electric panel (fig. 3b) and restart (fig. 8).
If the fault persists, call the Service Center
Other versions:
Operate on the button of the pressure switch returning
this to the OFF position and then to ON again (fig. 3a).
If the fault persists, call the Service Center
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. 21)
Check oil level
Call the Service Center
Clean the cock
13
Remedy
G
B