16
The compressor fails to start.
– The motor protector
5
is actuated.
> Disconnect power supply, and wait few minutes.
Press the motor-protector
5
and then press the
On/Off switch
1
to switch on the compressor. If
the motor protection is actuated again, contact
the customer service.
– The manometer
15
shows a pressure greater
than 7.5 bar (for the K 210 5 bar) (cutting-in
pressure).
> Release pressure until the pressure switch
7
switches on.
– Mains voltage fails.
> Check the electrical leads, etc.
Compressor runs uninterruptedly.
– Intake filter
4
is dirty.
> Clean filter or replace.
– The compressor is overloaded.
> Reduce the compressed air requirement.
– Leakage in the subsequent lead system.
> Eliminate leakage.
– Compressor is defective. (Pressure switch faulty).
> Contact the customer service.
The compressor runs for a short time when reaching the cutting-in pressure but then automatically
switches off.
– The compressor was not de-pressurised because
the electrical feed was interrupted during opera-
tion.
> Switch the compressor off using the On/Off
switch
1
and then switch it on again.
– On/Off switch
1
is defective.
> Contact the customer service.
– The length of the mains connection lead is not
permissible or the conducting cross-section is too
small.
> Lead length max. 25 m with a cross-section of
1.5 mm
2
.
At standstill, compressed air escapes for a longer period through relief valve 6 under pressure switch 7,
until the cutting-in pressure is reached.
– Non-return valve
16
has a leak or is defective.
> Contact the customer service.
During operation compressed air escapes through relief valve 6.
– Relief valve
6
has a leak.
> Contact customer service.
Compressor often switches on.
– Condensation water in the compressed air reser-
voir
17
.
> Drain condensation water.
– Compressor is overloaded.
> Reduce compressed air requirement.
– Reduced performance due to worn valve plate.
> Contact customer service.
Safety valve 14 blows off.
– Reservoir pressure is greater than the opening
pressure of the safety valve
14
.
– Pressure switch
7
must be re-set or changed;
contact customer service.
– Safety have faulty, it must be replaced. Contact
customer service.
Error Detection
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