TROUBLESHOOTING
3.
Defective piping
• Replace faulty parts
10.1.3.
1.
Inlet blocked
• Clean the supply line, slide valve, suction piece, suction port, or suction strainer
2.
Impeller blocked or impaired movement
• Switch off the unit, secure it against being switched back on again and free the
3.
Air in the system
• Vent the system
4.
Defective piping
• Replace faulty parts
5.
Inadmissible levels of gas in the fluid
• Consult the manufacturer
6.
Excessive decrease in the water table during operation
• Check the system's supply and capacity
10.1.4.
1.
Suction port, suction strainer, and/or impeller clogged
• Clean the suction port, suction strainer, and/or impeller
2.
Impeller stiff
• Switch off the unit, secure it against being switched back on again and free the im-
3.
Inadmissible levels of gas in the fluid
• Consult the manufacturer
4.
Signs of wear
• Replace worn parts
5.
Defective motor bearing
• Consult the manufacturer
6.
Unit is installed under tension
• Check installation, use rubber expansion joints if necessary
10.1.5.
If the points listed here do not rectify the fault, contact customer service. They will be
able to help you in the following ways:
• Telephone or written support from customer service
• On-site support from customer service
• Inspection or repair of the unit at the factory
Please note that you may be charged for some services provided by our customer
service. For more details, please contact customer service.
Installation and operating instructions Wilo-Actun OPTI-QS...
Fault: The unit runs, but not within the specified operating values
impeller
Fault: The unit does not run smoothly and is noisy
peller
Further steps for troubleshooting
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