32
English
Fault5: The machine does not run smoothly and is noisy
Cause
Remedy
Machine is running in
an disallowed operation
range
Check the operational data of the
machine and correct if necessary
and/or adjust the operating
conditions
The suction port,
strainer and/or impeller/
propeller is blocked
Clean the suction port, strainer
and/or impeller/propeller
The impeller is impeded
Switch off the machine, secure it
against being switched on again
and free the impeller
Inadmissible levels
of gas in the pumped
liquid
Contact the factory
Two-phase operation
Have a specialist inspect the
connection and correct it as
necessary
Incorrect direction of
rotation
Replace 2 phases on the mains
supply
Signs of wear
Replace worn parts
Defective motor
bearing
Contact the factory
The machine is installed
with mechanical strain
Check the installation, use rubber
spacers if necessary
Fault6: Mechanical shaft seal leaks, sealing chamber monitor
reports fault and switches the machine off
Cause
Remedy
Condensation build-up
due to lengthy storage
and/or temperature
fluctuation
Operate the machine briefly (max.
5min.) without sealing chamber
monitoring
Increased leakage
when running in new
mechanical shaft seals
Change the oil
Defective sealing
chamber cables
Replace the moisture sensors
Mechanical shaft seal is
defective
Replace the mechanical shaft seal
after contacting the factory
Further steps for troubleshooting
If the items listed here do not help you rectify the fault, contact
our customer service. They can help you as follows:
- Telephone or written help from customer service
- On-site support from customer service
- Checking and repairing the machine at the factory
Note that you may be charged for some services provided by
our customer support.
Customer service will provide you with details on this.
