Wilo -DrainLift M1/8 Einbau- Und Betriebsanleitung Seite 37

Faults
The pump doesn't pump properly
Volume flow too low
Current consumption too high
Delivery head too small
Pump runs roughly/loud noise
Installation and operating instructions Wilo-DrainLift M1/8
9 Maintenance
DANGER! Risk of fatal injury!
There is risk of fatal injury due to electric shocks when working on electrical equip-
ment.
• Before all maintenance and repair work, switch off the unit from the power supply and
make sure it cannot be switched on by unauthorised persons.
• Work on the electrical part of the unit may only be carried out by a qualified electrician.
DANGER!
Toxic or harmful substances in sewage can lead to infections or suffocation.
• Before carrying out maintenance work at the installation location, ventilate suffi-
ciently.
• Use appropriate protective equipment to prevent the risk of infection while performing
maintenance work.
• For safety reasons, make sure a second person is present at all times when you are
working in the sump.
• Risk of explosion when opening (avoid open sources of ignition)!
• Observe the installation and operating instructions of the unit and the accessories.
Read the "Decommissioning" chapter before performing maintenance work.
The system operator must make sure that all the maintenance, inspection and installation
work is done by authorised and qualified personnel, who have acquainted themselves suf-
ficiently with the system through a detailed study of the installation and operating inst-
ructions.
• Sewage lifting units are to be maintained by someone skilled to do so in accordance with
EN 12056-4. The intervals must not exceed:
• ¼ year in the case of commercial companies
• ½ year for units in multi-family houses
• 1 year in the case of units in single-family houses.
• A maintenance report must be drawn up.
It is recommended that the unit be maintained and checked by Wilo After-Sales Service.
NOTE: When drafting a maintenance plan, expensive repairs can be avoided and fault-free
operation of the unit can be achieved with a minimum of maintenance effort. The Wilo-
After-Sales Service is available for commissioning and maintenance work.
After maintenance and repair work, install and connect the installation as described in the
chapter "Installation and electrical connection". Switch on the machine as described in the
"Commissioning" chapter.
10 Faults, causes and remedies
Only have faults rectified by qualified personnel! Follow the safety instructions in
9bMaintenance.
• Observe the installation and operating instructions of the unit and the accessories!
• If the operating fault cannot be remedied, please contact your specialist technician or
Wilo Service or the closest Wilo representative.
Identifier: Cause and remedy
1, 6, 7, 8, 9, 10, 11, 15, 16, 17
1, 2, 3, 7, 8, 11, 12, 13
1, 2, 4, 5, 7, 13
1, 2, 3, 5, 8, 11, 12, 13, 16
1, 2, 3, 9, 12, 13, 14, 16
English
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