English
Installation and operating instructions Wilo-DrainLift XL
37
9 Maintenance
DANGER! Risk of fatal injury!
There is a mortal danger through shock when working on electrical equipment.
• 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 cause infections or suffocation.
• Ventilate the installation site sufficiently prior to any maintenance work.
• Use appropriate protective equipment during maintenance work to prevent any risk of
infection.
• For safety reasons, a second person must be present at all times when working in
sumps.
• Risk of explosion when opening (avoid open sources of ignition)!
• Observe the installation and operating instructions for the unit, switchgear and acces-
sories!
The unit operator must make sure all the maintenance, inspection and installation work
is performed by authorised and qualified personnel who have informed themselves
sufficiently by studying the installation and operating instructions in detail.
• Sewage lifting units are to be subjected to maintenance by experts 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 for units in single-family houses.
• A maintenance report must be issued.
It is recommended to have the unit serviced and inspected by Wilo's customer service.
NOTE: Expensive repairs can be avoided and trouble-free operation of the unit achieved
with a minimum of maintenance by compiling a maintenance plan. Wilo's customer service
is available for commissioning and maintenance work.
After maintenance and repair work, install and connect the unit as described in the chapter
“Installation and electrical connection”. Switch on the system as described in the
“Commissioning” chapter.
10 Faults, causes and remedies
Have faults remedied only by qualified personnel.
Observe the safety instructions in 9 Maintenance.
• Observe the installation and operating instructions for the unit, switchgear and accesso-
ries!
• If the operating fault is unable to be remedied, please consult a specialist technician, Wilo
service or the closest Wilo representative.
Faults
Code: Cause and remedy
The pump doesn't pump properly
1, 3, 5, 6, 7, 8, 9, 10, 11, 12, 15, 16, 17
Volume flow too low
1, 2, 3, 4, 5, 7, 8, 11, 12, 13
Current consumption too high
1, 2, 3, 4, 5, 7, 13
Delivery head too small
1, 2, 3, 4, 5, 8, 11, 12, 13, 16
Pump running roughly / loud noise
1, 2, 3, 9, 12, 13, 14, 16
Summary of Contents for DrainLift XL
Page 2: ...Fig 10...
Page 3: ...Fig 11...
