Maintenance Tasks - Wilo -Rexa FIT Instrucciones De Instalación Y Funcionamiento

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water level never falls below the minimum. The installa-
tion of a dry-running protection is recommended!
6.4.1 Indications for double pump operation
If several pumps are used in an operating space, min-
imum distances between the pumps and the wall must
be complied with. Here there is a difference in the dis-
tances depending on the type of system: Alternating op-
eration or parallel operation.
Fig. 3: Minimum distances
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
6.4.2

Maintenance tasks

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 sealing chamber.
6.4.2.1 Rotate impeller
WARNING
Sharp edges on the impeller and suction port!
Sharp edges can form on the impeller and suction
port. There is danger of limbs being severed! Protect-
ive gloves must be worn to protect from cuts.
‡
Pump is not connected to the mains!
‡
Protective equipment has been put on!
42
Installation and electrical connection
1. Place the pump horizontally on a firm surface. WARN-
ING! Risk of hands being crushed. Ensure that the
pump cannot fall over or slip away!
2. Reach into the hydraulics housing carefully and slowly
from below and turn the impeller.
6.4.2.2 Check oil in the sealing chamber
Fig. 4: Sealing chamber: Check the oil
1 Screw plug sealing chamber
‡
Pump is not installed.
‡
Pump is not connected to the mains.
‡
Protective equipment has been put on!
1. Place the pump horizontally on a firm surface. The screw
plug points upwards. WARNING! Risk of hands being
crushed. Ensure that the pump cannot fall over or slip
away!
2. Unscrew the screw plug.
3. Place a suitable tank to collect the operating fluid.
4. Drain the operating fluid: Rotate the pump until the
opening points downwards.
5. Check the operating fluid:
⇒ If the operating fluid is clear, reuse operating fluid.
⇒ If the operating fluid is contaminated (black), fill
with new operating fluid. Dispose of operating fluid
in accordance with the local regulations!
⇒ Notify customer service if an operating fluid con-
tains metal chips!
6. Pour in operating fluid: Rotate the pump until the open-
ing points upwards. Fill-in the operating fluid into the
opening.
⇒ Comply with the specifications for operating fluid
locations and quantity! When recycling the operat-
ing fluid, check the quantity and if required adjust it!
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WILO SE 2019-02