Operating instructions
Trouble shooting
15
104485 • 03/03
7 Trouble
shooting
7.1
Malfunction, compressor generally
Danger
Trouble shooting may be carried out only by trained experts or by staff members of
BLITZ Company. Before taking any corrective action, carefully read and follow all
Gen-
eral notes on safety (refer to chapter 1), all notes on safety for the operation (refer to
chapter 4), and all notes on safety for the maintenance of the device (refer to chapter 6).
The compressor does not start up.
Temperature detector of the motor gives a signal.
Potential reasons
Actions
No connection to network.
•
Check the connection to the mains.
Fuse has blown.
•
Check the electric cable, switching units
and the motor.
•
Use time-lag fuses only.
•
Replace the fuse.
Network pressure is over cut-in pressure.
•
Reduce the pressure in the network.
Defect in the pressure detector or cable
break.
•
Check cable, or replace pressure detector.
The motor has broken down.
•
Check the electric system and the cables.
•
Replace the motor.
Temperature detector of the motor gives a
signal.
•
Refer to table “Temperature detector of
the motor gives a signal”.
Potential reasons
Actions
Fault at the electric connection.
•
Check the electric connection for under-
voltage and phase failure.
•
Check the conductor cross section.
Ambient temperature is too high.
•
Improve the room ventilation.
•
Select a cooler location.
Damage on the compressor
•
Check bearing of the compressor and
gear set.
Motor gets too hot due to high switching
frequency.
•
Check the pressure switching points.
Wrong settings in the pressure detector.
•
Check the pressure switching points.
The clamping connections have come lose.
•
Retighten the clamping connections.
