Wilo FKT 50.1 - Page 18

en Installation and electrical connection
18 WILO SE 2019-01
ƒ Prepare operating space/installation location as follows:
– Clean, free of coarse solids
– Dry well
– 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
which has been technically approved.
ƒ Use lifting gear for lifting, lowering and transporting the pump. Never pull the pump
by the power supply cable!
ƒ It must be possible to attach lifting equipment safely. The storage place and the op-
erating space/installation site must be accessible with the lifting equipment. The
set-down location must have a solid bearing surface.
ƒ 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.
ƒ The corresponding IP class must be observed when using switchgear. Install the
switchgear overflow-proof and outside potentially explosive areas!
ƒ 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 op-
erating conditions. Air pockets must be removed via ventilation systems!
ƒ 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 installa-
tion of a dry-running protection is recommended!
6.4.1 Indications for double pump oper-
ation
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.
d
A
2
A
1
Fig.3: Minimum distances
d Diameter hydraulics housing
A
1
Minimum distance from the wall:
- alternating operation: min. 0.3×d
- parallel operation: min. 1×d
A
2
Distance to pressure pipes
- alternating operation: min. 1.5×d
- parallel operation: min. 2×d
6.4.2 Unloading pumps delivered in ho-
rizontal position
To prevent excessive tension and bending forces being applied to the pump, the pumps
can, depending on their size and weight, be laid out horizontally for delivery. Delivery is
on specially designed transport frames. Please observe the following work steps when
unloading the pump.
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!