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13-25-639 v00 Page 55
Malfunction
Possible cause
Remedy
Unit switches off
1.
Ambient temperature is too high
1.
Ventilate the compressor room
2.
Electric motor is defective
2.
Check the electric motor and PTC
thermistor
3.
Faulty fan
3.
Check/exchange fan
4.
Faulty sensor, connection or cable
4.
Check the sensor, connection and
cable
5.
Electrical cable gauge too small
5.
Measure the current draw and
exchange the cable if necessary
6.
Excessive power consumption
6.
Fine oil separator is dirty, replace if
necessary
7.
Oil level too low
7.
Refill the oil in the pressure reservoir
8.
Oil injection pressure too low
8.
Replace the oil filter cartridge, clean
the oil system
9.
Oil temperature too high
9.
Check the oil cooler and fan/ check
the oil temperature controller
Check cooling water circuit
(only for water-cooled units)
Idle pressure too high
1.
Suction regulator doesn’t close correctly
1.
Check the suction regulator and
solenoid valve
2.
System doesn’t discharge
2.
Check the suction regulator and
solenoid valve
Oil in the compressed
1.
air
Fine oil separator is defective
1.
Replace the fine oil separator
cartridge
2.
Oil foams
2.
Replace the oil
3.
Oil level is too high
3.
Drain the oil
4.
Faulty minimum pressure non-return
valve
4.
Check the minimum pressure non-
return valve
5.
Oil extractor orifice is plugged
5.
Remove and clean the orifice
Oil in the air filter
1.
Faulty suction regulator non-return
function
1.
Check the suction regulator
2.
Suction regulator doesn’t close correctly
2.
Check the suction regulator
3.
Regular use of the emergency stop
3.
Emergency stop may only be used for
functional problems relating to safety
Pressure relief valve
1.
Faulty pressure relief valve
1.
Replace
opens
2.
Fine oil separator is dirty and faulty final
compression pressure sensor
2.
Replace the fine oil separator
cartridge and final compression
pressure sensor
3.
Suction regulator closes too slowly
3.
Check the suction regulator and
solenoid valve
4.
Faulty system pressure sensor
4.
Replace the system pressure sensor
5.
Faulty electronics
5.
Replace electronics
Summary of Contents for L Series
Page 58: ...13 25 639 v00 Page 57 Fig 28 all dimensions in inches...
Page 59: ...NOTES...