13 | Troubleshooting
34 | 40 Instruction Manual FOSSA FO 0015 A - FO 0035 B_EN_en
13 Troubleshooting
Problem Possible Cause Remedy
The machine does not start. The motor is not supplied with
the correct voltage.
● Check the power supply.
Internal parts are worn or
damaged
● Repair the machine (contact
Busch).
The fuse has blown. ● Check the electrical installa-
tion.
● Replace the fuse.
The motor is defective. ● Repair the machine (contact
Busch).
The machine does not reach
the usual pressure on the suc-
tion connection.
The inlet screen is partially
clogged.
● Clean the inlet screen.
The inlet filter cartridge (op-
tional) is partially clogged.
● Replace the inlet filter car-
tridge.
Measurement method or read-
ing is false.
● Check gauge, check final
pressure without installation
connected.
Leak in the system. ● Repair leak.
Worn tip seal. ● Replace tip seal, see Tip Seal
and Non-return Valve Re-
placement.
Internal parts are worn or
damaged.
● Repair the machine (contact
Busch).
The machine runs very noisily. The machine runs too hot. ● See problem “The machine
runs too hot”.
Internal parts are worn or
damaged.
● Repair the machine (contact
Busch).
The machine runs too hot. Insufficient cooling. ● Check the ventilation.
Ambient temperature too high. ● Observe the permitted am-
bient temperature.
The machine is contaminated
by process residuals.
● Repair the machine (contact
Busch).
Discharge pipe obstructed. ● Check the discharge line.
The motor is defective. ● Repair the machine (contact
Busch).
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