ENGLISH
V4-007 J EN
Originalbetriebsanleitung
37
9
Error messages/
Faults
What do I do
if . . ?
Possible
causes . .
Remedy . .
...if damage to the
machine occurs as
a result of a faulty
supply point?
Motor and electr. control •
have been connected to
two different networks.
Connect motor and •
control voltage to a single
supply network.
Alternatively: Use a cur-•
rent monitoring relay.
...there is a break-
down due to "intake
pressure"?
Intake lter or starting •
strainer soiled
Slide valve in intake pipe •
closed
Blank tted•
Clean, replace •
Open slide valve •
Remove blank•
...a breakdown oc-
curs due to "com-
pression discharge
pressure"?
Overload at discharge side•
Closed discharge side•
Blank installed•
Performance limits•
Open slide valve•
Remove blank•
...there is a break-
down due to an
increased
"discharge tempera-
ture"?
Decrease in intake pressure•
Increase in discharge •
pressure
Deterioration in volumet-•
ric efciency
Increase in intake tem-•
perature
Too little exhaust air •
expelled
Acoustic hood exhaust air •
louvre soiled
Check intake pipe•
Check discharge pipe•
Check play setting, •
replace components if
necessary
Ensure there is sufcient •
inlet air
Ensure there is sufcient •
exhaust air
Clean•
...there is a break-
down due to an
increased oil tem-
perature?
Oil cooler soiled•
Oil cooler ventilator faulty•
Thermostat controller •
faulty
Clean•
Replace•
Replace•
...there is a break-
down due to insuf-
cient oil?
Oil lter contaminated•
Oil pump faulty•
Oil pump is taking in air•
Oil regulating valve faulty •
or stuck
Oil level too low•
Replace•
Replace•
Check intake pipe•
Move spindle; if there is •
a soft knocking on the
housing, replace
Rell oil; establish and •
eliminate reason for lack
of oil
...the compressor is
not oil-tight?
Oil demister has failed•
Oil chamber seal faulty•
Screwed connections in •
oil lines loose
Perform demister maintenance•
Replace seals•
Retighten; replace•
Whenever intervention has been necessary as a result of a fault occurring, the fol-
lowing must be checked:
Ease of running in rotary piston machine•
Non-contact rotation•
Lubricating oil level•
Correct functioning and connection•
Compliance with the safety and warning information•
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