Wilo Rexa UNI, Инструкция по установке и эксплуатации

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en Installation and electrical connection
14 WILO SE 2019-02
6.4.1 Indications for double pump operation
If several pumps are used in an operating space, minimum dis-
tances 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 Note on DN 50/65 combination flange
The Rexa UNI V06... is equipped with a DN 50/65 combination
flange. The nuts on the combination flange are factory-set to the
DN 65 flange. For use with a DN 50 flange, adjust the nuts at the
flange. The flange can be reset to DN 65 at any time!
Fig. 4: Adjust combination flange
‡
No accessories mounted on flange.
‡
Nut is freely accessible.
1. Push the nut inwards onto the small hole circle using a
screwdriver.
▶ The flange connection is reset to DN 50.
6.4.3 Maintenance tasks
After a storage period of more than 6 months, check the oil in the
sealing chamber prior to installation:
1
Fig. 5: 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!
7. Clean the screw plug, replace the seal ring and screw it
back in. Max. tightening torque: 8 Nm (5.9 ft lb)!