Pilot Air SILENT K17SI, Instruction And Maintenance Manual

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23 | P a g e Silent Series Rev 01 03-2020
13.Troubleshooting
THE COMPRESSOR STOPS BECAUSE THE THERMAL CUTOUT IS TRIGGERED
Possible causes
1) Insufficient voltage supply to motor terminals.
2) ‘Motor overload’ status indicator on (40.4)[fig.14].
3) Incorrect thermal cutout setting.
4) Solenoid valve mechanism stuck in closed position.
5) Pump unit resistance malfunction.
Solutions
1) Check circuit sizing and do not use extensions.
2) Measure energy consumption by individual phases and verify correct unit operation.
3) Reset the thermal cutout.
4) Replace the solenoid valve.
5) Remove the belt and verify correct pump operation, check the level and quality of the oil and
correct motor off-load operation.
THE SAFETY VALVE OPENS
Possible causes
1) Incorrect pressure switch setting.
2) Incorrect safety valve setting.
3) Solenoid valve mechanism blocked, during offload operation the pressure continues to rise.
Solutions
1) Reset the pressure switch.
2) Replace with other valves of the same approved type. Bear in mind that safety valves are sealed
pressure components that are fundamental for machine safety and must be approved by official
supervisory bodies.
3) Replace the solenoid valve.
POOR OR LOW CAPACITY, PRESSURE DOES NOT INCREASE
Possible causes
1) Clogged air intake filter (44) [fig.2-3-4-5].
2) Belts slack or worn.
3) Leaks from fittings.
4) Mechanical faults in the pump unit.
Solutions
1) Clean or replace the filter.
2) Tension or replace belts.
3) Inspect fittings using soapy water.
4) Seek the help of a qualified technician tooverhaul the unit