Wilo DrainLift M2/8 Notice De Montage Et De Mise En Service page 38

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• The slurping time should be 2 s, and the total pump run-time of one pump operation
should not exceed 12 s. Otherwise, the unit is working in an impermissible range (delivery
head too high, inlet too big).
8.3 Decommissioning
The installation must be decommissioned before performance of maintenance work or
disassembly.
WARNING! Risk of burns!
Depending on the operating status of the installation, the entire pump can become very
hot. Touching the pump can cause burns.
Allow the installation and pump to cool to room temperature.
Dismantling and installation
• Dismantling and installation by qualified personnel only!
• Disconnect the installation from the power supply and secure it against being switched
back on again.
• Depressurise any pressurised parts before work.
• Close the gate valves (inlet and pressure pipe)!
• Empty the collection reservoir (e.g. with diaphragm hand pump)!
• To clean, unscrew and remove the maintenance cover.
DANGER! Risk of infection!
If the unit or unit components are to be sent in for repairs, a used unit must be drained
and cleaned before transport for hygiene reasons. Also, all parts which can be touched
must be disinfected (spray disinfection). The parts must be packed in tear-proof, suf-
ficiently large plastic bags so that they are tightly sealed and leak-proof. They are to be
sent in without delay via instructed forwarding agents.
For longer periods of non-use, check the unit for contaminants and clean if necessary.
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 suffici-
ently.
• 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.
WILO SE 02/2011