11 | Troubleshooting
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0870168409_MV0602B_O2_A0000_IM_en_MD
SCH
Mink
B
U
CPL
IS
VRE
Problem
Possible Cause
Remedy
The machine does not start. The motor is not supplied
with the correct voltage.
• Check the power supply.
The motor is defective.
• Replace the motor.
The coupling (CPL) is de-
fective.
• Replace the coupling
(CPL).
The machine does not
reach the usual pressure on
the suction connection.
The inlet screen (IS) is par-
tially clogged.
• Clean the inlet screen
(IS).
The vacuum relief valve
(VRE) is misadjusted or de-
fective.
• Replace the vacuum re-
lief valve (VRE)
The inlet filter cartridge (op-
tional) is partially clogged.
• Replace the inlet filter
cartridge.
Internal parts are worn or
damaged.
• Repair the machine (con-
tact Busch).
The machine runs very
noisily.
Worn coupling (CPL).
• Replace the coupling
(CPL).
Oil level too low.
• Top up oil.
Defective bearings.
• Repair the machine (con-
tact Busch).
The machine runs too hot.
Insufficient cooling.
• Remove dust and dirt
from the machine.
Ambient temperature too
high.
• Observe the permitted
ambient temperature,
see
.
Temperature of the process
gases at the inlet too high.
• Observe the permitted
gas inlet temperature,
see
.
Oil level too low.
• Top up oil.
For the solution of problems not mentioned in the troubleshooting chart contact your
Busch representative.