12
102619 03/13
Operating Instruction
Trouble shooting
The switching frequency of the motor
is too high.
Potential reasons
Actions
The compressed-air reservoir is too small.
• Use a larger compressed-air reservoir.
The pressure switch has been set wrongly.
• Check the pressure switching points.
Too much condensation water in the com-
pressed-air reservoir / compressed-air ductwork
system.
• Drain the condensation water (cf. chapter
5.4).
• As a preventive measure, fit an automatic
condensation water drain system (BLITZ
accessories).
Low delivery – the setpoint pressure is
not made.
Potential reasons
Actions
Valves are defective.
• Check the valves, and replace, if and when
necessary.
The suction filter is soiled.
• Clean the filter cartridge and replace, if and
when necessary.
Pipes and fittings are leaking.
• Tighten the screws and fittings.
• Replace the seals.
The cylinder head seal is leaking.
• Tighten the cylinder head screws.
• Replace the cylinder head seal.
The piston, piston rings, and the cylinder are
worn.
• Check the components.
• Replace the worn parts.
The pressure switch has been set wrongly.
• Check the pressure switching points.
The air demand is higher than the delivery volu-
me of the compressor.
• Check the air demand.
• Expand the compressed air supply.
The compressor turns too hot.
Potential reasons
Actions
Ambient temperature is too high.
• Improve the room ventilation.
• Select a cooler location.
The cooling air volume is not available or too
low.
• The space between fan and wall is to small
(cf. chapter 3.1 “Mounting conditions”).
• Check the fan cowl opening for soiling, and
clean, if and when necessary.
Wrong rotating direction of the fan.
• Check the rotating direction of the fan(cf.
chapter 3.3 “Checking the rotating direc-
tion”).
The compressor valves are defective.
• Check the compressor valves, and replace
them, if and when necessary.
The ultimate pressure is too high.
• Check the pressure switching points.
