ROTORCOMP NK 31 - Page 48

10.2
[en] 02/2014
Installation and operating manual - NK 31ROTORCOMP VERDICHTER
Fault Possible cause Remedy See chapter
Safety valve blows off Safety valve defective Replace safety valve
Fine separator cartridge
soiled
Replace cartridge 7.5.2
System does not relieve
Continuous operation
System does not
switch off automatically
(drop-out mode)
Oil in compressed air Oil extraction line with
nozzle in oil sight glass
soiled
Clean oil extraction
system
Fine separator cartridge
defective
Check cartridge and
replace if necessary
7.5.2
Oil level in oil reservoir
too high; possibly
excessive condensate
Observe oil level marking;
drain and replace if
necessary
7.2
System is not dischar-
ged during continuous
operation, system
does not switch off
automatically in case
of intermittent opera-
tion, i.e. safety valve
blows off
Upper switching point of
network pressure monitor
set too high
Readjust network
pressure monitor
Solenoid valve defective
Relief valve defective
Replace solenoid valve/
relief valve
Minimum pressure valve
jammed
Check minimum pressure
valve for smooth move-
ment; ensure smooth
movement if necessary
System continually
discharges, low feed
quantity
Solenoid valve defective
Relief valve defective
Replace solenoid valve/
relief valve
Break in electric supply
line to solenoid valve
Eliminate break
No or insufcient feed
quantity
Intake lter soiled Replace lter insert 7.6.2
Oil shortage Check oil level and top up
if necessary
7.2
Intake control valve does
not open
Check control valve
Leaks in system Check, seal off