Wilo FK 17.1 Instrucciones De Instalación Y Funcionamiento página 166

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6.4.1 Indications for double pump oper-
ation
Fig. 3: Minimum distances
6.4.2 Maintenance tasks
6.4.2.1 Rotate impeller
166
Installation and electrical connection
▪ 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!
▪ Attach the lifting gear to the attachment point using a shackle. Only use lifting gear
which has been technically approved.
▪ Use lifting gear for lifting, lowering and transporting the pump. Never pull 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.
▪ 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.
d Diameter hydraulics housing
Minimum distance from the wall:
A - alternating operation: min. 0.3 × d
1
- parallel operation: min. 1 × d
Distance to pressure pipes
A - alternating operation: min. 1.5 × d
2
- parallel operation: min. 2 × d
After a storage period of more than 6 months, carry out the following maintenance
tasks before installation:
▪ Rotate the impeller.
▪ Check the oil in the motor compartment.
▪ Check the oil in the sealing chamber.
WARNING
Sharp edges on the impeller and suction port!
Sharp edges can form on the impeller and suction port. There is danger of limbs be-
ing severed! Protective gloves must be worn to protect from cuts.
‡
Pump is not connected to the mains!
‡
Protective equipment has been put on!
1. Place the pump upright on a firm surface. WARNING! Risk of hands being crushed.
Ensure that the pump cannot fall over or slip away!
WILO SE 2019-01