4 Operation / Normal use
4 - 14
4.6 Remedying malfunctions in normal operation (continuation)
Fault
Possible Cause
Remedy
Intake regulator
does not close at
discharge pressure
•
Actuating cylin-
der defective, no
control pressure
•
Nozzle blocked
or frozen
Install new actuating
cylinder, check sole-
noid valve
Clean nozzle
Pressure vessel not
depressurising
•
Non-return valve
defective
Change non-return
valve
Oil in compressor,
oil mist on
venting
•
Loose connec-
tion in oil line
•
Check seal on oil
drain plug
•
Machine is shut
off if under load
(e.g. emergency
stop switch)
•
Check condition
and fit of O-ring
on intake regula-
tor
Tighten connection
Tighten screw,
seal if necessary
Do not switch com-
pressor off until it has
coasted for
three minutes, or
check the minimum
run-on time and set
to three minutes
Fit new O-ring if nec-
essary
System runs noisily
•
V-belts not cor-
rectly tensioned
•
V-belt sets not
compatible
•
V-belt pulleys not
aligned with each
other
Check V-belt tension
and tighten if neces-
sary
Replace with match-
ing set of belts
Check alignment of
pulleys and adjust if
necessary
Malfunctions
(contd.)
