Pilot Air SILENT K17SI, Инструкция по эксплуатации и техническому обслуживанию

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22 | P a g e Silent Series Rev 01 03-2020
13.Troubleshooting
Unless otherwise specified, the following information refers to the complete range.
THE COMPRESSOR DOES NOT START:
Possible causes
1) No electricity supply;
2) Auxiliary circuits fuse (39.2.3)[fig.14] blown (SILENT2 and SILENT4);
3) Line fuse (39.2.2) [fig.14] blown (SILENT2 and SILENT4);
4) No voltage supply to line contactor coil K (SILENT2 and SILENT4);
5) Line contactor coil K disconnected (SILENT2 and SILENT4);
6) Motor thermal cutout has been triggered (in SILENT2 and SILENT4 models the dedicated LED
switches on);
7) In SILENT2 and SILENT4 models, if the phase sequence relay is used, the motor may be turning
in the wrong direction and the dedicated status indicator will be switched on.
8) The compressor is pressurised;
9) Pressure switch (41) [fig.15] malfunction.
Solutions
1) Check the external protection and voltage supply of each phase;
2) Replace the fuse and find the cause of the fault. In case of further problems, seek the advice of a
qualified technician;
3) Replace the fuse and find the cause of the fault. In case of further problems, seek the advice of a
qualified technician;
4) Verify the correct operation of the transformer;
5) Verify the correct operation of the coil;
6) Reset the motor thermal cutout;
7) Invert two phases. If the problem persists, jumper the two terminals 1 and 4 in the ELECTROMATIC
version and make sure that the motor turns in the right direction (which must correspond to the direction
of the arrow on the motor);
8) Check the pressure gauge and, in case of pressure, empty the sump
9) Verify the electromechanical efficiency of the pressure switch.
THE MOTOR STOPS AND BRINGS THE COMPRESSOR TO A STANDSTILL
Possible causes
1) Status indicator (40.6) [fig.14] on: ambient temperature exceeds nominal values.
2) Status indicator (40.6) [fig.14] on: electric fan out of order.
3) Status indicator (40.4) [fig.14] on: motor overload
4) Mechanical faults of the pump unit
Solutions
1) Increase ventilation of the premises and vent hot air. Make sure that no airways in the cabinet are
clogged. Check the voltage and current of each motor phase.
2) Jumper the two fast-on connectors to verify correct thermostat operation, (43) [fig.4-5] verify the
correct operation of the KV 39.3 power contactor and the electric fan.
3) Check the voltage, consumption of individual phases and thermostat setting.
4) Check the level and quality of the oil. Overhaul the unit.