Wilo EMU FA Notice De Montage Et De Mise En Service page 46

en
6.4 Installation
6.4.1 Indications for double pump oper-
ation
46
Installation and electrical connection
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
Only use lifting equipment in a technically sound condition!
Only use lifting equipment in a technically sound condition for lifting, lowering and
transporting the pump. Ensure that the pump does not become jammed during lift-
ing and lowering. Do not exceed the max. permissible bearing capacity of the lifting
equipment!
▪ Prepare operating space/installation location as follows:
– Clean, free of coarse solids
– Dry well
– Frost-free
– Decontaminated
▪ Take immediate countermeasures if there is a build-up of toxic or suffocating gases!
▪ Use the handle for lifting, lowering and transporting the pump. Never carry or drag the
pump by the power supply cable!
▪ It must be possible to attach lifting equipment safely. The storage place and the oper-
ating space/installation site must be accessible with the lifting equipment. The set-
down location must have a solid bearing surface.
▪ Attach the lifting gear to the handle using a shackle. Only use lifting gear which has
been technically approved.
▪ The routed power supply cables must allow safe operation. Check whether the cable
cross-section and the cable length are sufficient for the selected installation type.
▪ The corresponding IP class must be observed when using switchgear. Install the
switchgear overflow-proof and outside potentially explosive areas!
▪ Avoid air intake into the fluid, use baffles or deflector plates for the inlet. Air which has
entered the system can collect in the pipe system and lead to impermissible operating
conditions. Air pockets must be removed via ventilation systems!
▪ A dry run of the pump is prohibited! Avoid air pockets in the hydraulics housing or in the
pipe system. Ensure the water level never falls below the minimum. The installation of a
dry-running protection is recommended!
If several pumps are used in an operating space, minimum distances between the
pumps and the wall must be complied with. Here there is a difference in the distances
depending on the type of system: Alternating operation or parallel operation.
WILO SE 2018-02