Troubleshooting | 11
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Abnormal sounds or vibra-
tions.
STOP THE MACHINE
IMMEDIATELY!
The pulleys are placed incor-
rectly. Either parallel-dis-
placed or angle-displaced.
• Place the pulleys cor-
rectly.
Damaged bearings. • Begin repair with bearing
replacement.
Shortage of oil or dazed oil. • Top up or change oil.
Too much oil in oil box. • Drain the oil and regulate
the oil level.
Too unstable foundation. • Ensure stable foundation.
Resonance in pipe system. • Pipe system must be con-
nected to blower with
flexible connections and
supported if necessary.
Too high differential pres-
sure.
• Look for causes of in-
creased differential pres-
sure, e.g. blockage or
damage. Check also for
control system-based
causes. Repair.
Air leakage. • Find the leakage spots
and repair.
The lobes touch the cylinder
or the end covers.
• Begin repair in workshop.
There are foreign bodies in
the cylinder.
• Begin repair in workshop.
Damaged check valve • Replace check valve.
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