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Installation and operating instructions Wilo-DrainLift XXL
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8.3 Decommissioning
The unit must be decommissioned prior to maintenance or dismantling work.
Observe the information in the installation and operating instructions for the TP pumps!
Dismantling and installation
• Dismantling and installation by qualified personnel only!
• Disconnect the unit from the mains supply and secure it against being switched back on
again by unauthorised persons!
• Depressurise any pressure parts before carrying out any work on them.
• Close gate valves (inlet and pressure pipe).
• Empty the collection reservoir (e.g. with diaphragm hand pump).
• Unscrew and remove the maintenance cover for cleaning.
DANGER! Risk of infection!
If the unit or unit components are to be sent in for repairs, the used unit should be
drained and cleaned before transport for reasons of hygiene. Furthermore, all parts
which may be touched must be disinfected (spray disinfection). The parts must be
packed in tear-proof plastic bags of sufficient size in such a manner that they are
tightly sealed and leak-proof. They are to be sent in without delay via instructed for-
warding agents.
Check the unit for contaminants and clean it if necessary in the event of long standstill
periods.
9 Maintenance
DANGER! Risk of fatal injury!
There is risk of fatal injury due to electric shock when working on electrical equipment.
• Disconnect the unit from the mains supply and secure it against being switched on
again by unauthorised persons prior to any maintenance and repair work.
• Have work on the electrical part of the unit carried out only by a qualified electrician as
a basic principle.
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.
• Danger of explosion when opening (avoid open sources of ignition)!
• Observe the installation and operating instructions for the unit, switchgear and acces-
sories!
Read the “Decommissioning” chapter prior to maintenance work.
The unit operator must make sure all the maintenance, inspection and installation work is
performed by authorised and qualified personnel who have informed themselves suffi-
ciently 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 should be compiled.
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.
Install and connect the unit as described in the chapter “Installation and electrical connec-
tion” after maintenance and repair work. Switch on the unit as described in the “Commis-
sioning” chapter.
