Operating Manual - EVO
®
Line
[en] 07/2020 10.3
Fault Possible cause Remedy See chapter
Control valve does not
close
Pressure switch, or control
valve
Check setting
Oil exits through intake
control valve during stop
Sealing surface of control
valve is damaged,
spring broken
Check parts and replace
if necessary
System does not relieve Solenoid valve/electrical
system
Check
Impulse-pressure relief
valve
Check and replace parts
if necessary
Control valve constantly
discharges
Solenoid valve/electrical
system
Check
Oil escapes during dis-
charging
(oil foam in fine separator
cartridge)
Oil type incorrect Oil change 7.3
Oil foam forms during stop Install discharge delay
valve, replace with differ-
ent nozzle diameter
Oil level too high Drain off oil 7.2
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