Wilo Rexa CUT GI Instrucciones De Instalación Y Funcionamiento página 18

en-US
6.4.1 Instructions for double pump op-
eration
Fig. 3: Minimum distances
6.4.2 Maintenance work
Fig. 4: checking the oil
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Installation and electrical connection
▪ Lifting equipment must be safely installed. The storage location as well as the operating
space/installation site must be accessible with the lifting equipment. The storage location
must have a firm surface.
▪ Attach lifting gear to the handle with a shackle. Only use technically approved lifting gear.
▪ 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.
▪ When using switchgear, the corresponding IP class must be observed. Install switchgear in a
manner that is overflow-proof and not in potentially explosive areas!
▪ Avoid air aeration of the fluid, use guide or deflector plates for the inlet. Entrained air can
collect in the pipe system and lead to impermissible operating conditions. Eliminate air
pockets via the ventilation system!
▪ Dry running of the pump is forbidden! Avoid air pockets in the hydraulics housing or in the
pipe system. Never fall below minimum water level. The installation of a dry-running pro-
tection 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 of the hydraulics housing
Minimum distance from the wall:
A - alternating operation: min. 0.3 × d
1
- parallel operation: min. 1 × d
Distance discharge pipes
A - alternating operation: min. 1.5 × d
2
- parallel operation: min. 2 × d
After a storage period of more than 6 months check the oil in the sealing chamber before
installation:
+/- Sealing chamber screw plug
‡
Pump is not built-in.
‡
Pump is not connected to the power supply.
‡
Protective equipment has been put on!
1. Position the pump horizontally on a firm surface. The screw plug is facing upwards.
WARNING! Danger of crushing hands. Make sure that the pump cannot fall over or
slip!
2. Unscrew screw plug.
+/-
3. Place a suitable tank to collect the operating fluid.
4. Drain operating fluid: Rotate the pump until the hole points downwards.
5. Check operating fluid:
⇒ When the operating fluid is clear, re-use the operating fluid.
⇒ If the operating fluid is contaminated (black), pour in new operating fluid. Dispose
of operating fluids according to the local regulations!
⇒ If there are metal filings in the operating fluid, inform customer service!
6. Pour in operating fluid: Rotate the pump until the hole points upwards. Pour operating
fluid into the hole.
WILO SE 2019-02