12 | Troubleshooting
30 | 36
Instruction Manual COBRA BA 0100 C_EN_en
12
Troubleshooting
Problem
Possible Cause
Remedy
The machine does not start.
The machine is not supplied
with the correct voltage.
●
Check the power supply.
Internal parts are worn or
damaged
●
Repair the machine (contact
Busch).
The motor safety switch (MSS)
has tripped.
●
Check the electrical installa-
tion.
●
Turn on the motor safety
switch.
The motor is defective.
●
Repair the machine (contact
Busch).
The machine does not reach
the usual pressure on the suc-
tion connection.
Suction lines are too long or
section diameter is too small.
●
Use larger diameter or
shorter lines.
●
Seek advice from your local
Busch representative.
Measurement method or read-
ing is false.
●
Check the gauge, check ulti-
mate pressure directly at
isolated inlet connection.
Excessive counter pressure
●
Make sure internal or exter-
nal check valve is not stuck.
Leak in the system.
●
Repair leak.
Internal parts are worn or
damaged.
●
Repair the machine (contact
Busch).
The machine runs too hot.
Ambient temperature too high.
●
Observe the permitted am-
bient temperature, see
Technical Data.
The fan inlet (AF) is dirty or ob-
structed.
●
Clean it and make sure that
the air flow path is clear of
all obstacles.
Temperature of the process
gases at the inlet too high.
●
Observe the permitted gas
inlet temperature, see Tech-
nical Data.
The machine runs very noisily.
Wrong oil quantity or unsuit-
able oil type.
●
Use one of the recommend-
ed oils in the correct quanti-
ty, see Oil [
32].
Defective gears, bearings or
coupling element.
●
Repair machine (contact
Busch).
The oil is no longer transparent Oil change intervals are too
long.
●
Drain the oil and fill in new
oil, see Oil Change [
The machine runs too hot.
●
See problem "The machine
runs too hot".
The oil is emulsified due to
contamination by the process.
●
Drain the oil and fill in new
oil, see Oil Change [
