en Installation and electrical connection
66 WILO SE 2019-10
ƒ Check that the available consulting documents (installation plans, design of the op-
erating space, inflow conditions) are complete and correct.
6.4 Installation
DANGER
Permanent magnet motors: Risk of fatal injury caused by inductive
voltage!
The motor generates an inductive voltage if the rotor is driven without electrical en-
ergy (e.g. when the fluid returns). In this case, the connection cable is live. There is a
risk of fatal injury caused by electric shock! Earth the connection cable prior to mak-
ing the connection and dissipate inductive voltage!
DANGER
Risk of fatal injury due to dangerous lone working practices!
Work in chambers and narrow rooms as well as work involving risk of falling are dan-
gerous work. Such work may not be carried out autonomously! A second person
must be present for safety reasons.
WARNING
Hand and foot injuries due to lack of protective equipment!
Danger of (serious) injuries during work. Wear the following protective equipment:
• Safety gloves for protection against cuts
• Safety shoes
• Safety helmet must be worn if lifting equipment are used!
NOTICE
Use only properly functioning lifting equipment!
Use only properly functioning lifting equipment to lift and lower the pump. Ensure
that the pump does not become jammed during lifting and lowering. Do not exceed
the maximum bearing capacity of the lifting equipment! Check that lifting equip-
ment is functioning properly before use!
ƒ Prepare the operating space/installation location as follows:
– Clean, free of coarse solids
– Dry
– Frost-free
– Decontaminated
ƒ Take immediate countermeasures if there is a build-up of toxic or suffocating gases!
ƒ Attach the lifting gear to the attachment point using a shackle. Only use lifting gear
that has been technically approved.
ƒ Use lifting gear for lifting, lowering and transporting the pump. Do not pull the pump
by the connection cable!
ƒ It must be possible to attach the lifting equipment safely. The storage location and
the operating space/installation site must be accessible by the lifting equipment.
The set-down location must have a firm surface.
ƒ Routed connection cables must enable safe operation. Check whether the cable
cross-section and the cable length are sufficient for the selected installation type.
ƒ The corresponding IPclass must be observed when using switchgears. Install the
switchgear in an overflow-proof position and away from potentially explosive atmo-
sphere areas!
ƒ Avoid air intake into the fluid, use baffles or deflector plates for the inlet. Air that has
entered the system can collect in the pipe system and lead to impermissible operat-
ing conditions. Air pockets must be removed using the ventilation systems!
ƒ Do not allow the pump to dry run! Avoid air pockets in the hydraulics housing or in
the pipe system. Ensure that the water never falls below the minimum level. The in-
stallation of dry-running protection is recommended!
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