Maintenance Tasks - Wilo Padus UNI Einbau- Und Betriebsanleitung

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water level never falls below the minimum. The installa-
tion of a dry-running protection is recommended!
6.4.1

Maintenance tasks

After a storage period of more than 6 months, check the
oil in the sealing chamber prior to installation:
Fig. 3: 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!
40
Installation and electrical connection
6.4.2
1
7. Clean the screw plug, replace the seal ring and screw it
back in. Max. tightening torque: 8 Nm (5.9 ft lb)!
Portable wet well installation
WARNING
Risk of burns from hot surfaces!
Motor housing can become hot during operation. It
may cause burns. Allow the pump to cool down at
ambient temperature after switching it off!
WARNING
Separation of pressure hose!
Separation or movement of the pressure hose can
lead to (serious) injuries. Securely attach the pressure
hose to the outlet! Prevent buckling of the pressure
hose.
NOTICE
Pumping problems due to water level being
too low
The hydraulics are self-venting. Smaller air cushions
are resorbed during pumping. If the fluid is lowered
too much, separation of the volume flow may occur.
The minimum permissible water level must reach the
upper edge of the hydraulics housing!
For portable installation, the pump is equipped with a
strainer. The strainer filters coarse solids out of the fluid
and enables secure standing if placed on a solid load
bearing surface. This allows the pump to be installed
anywhere in the operating space/installation location. To
prevent sinking in, a hard base must be used at the in-
stallation location in case of soft load bearing surfaces. A
pressure hose or pipework is connected on the pressure
side.
CAUTION! If the motor emerges during operation, ob-
serve the operating mode for non-immersed operation
(S2-15, S3 10 %*)!
* Operating mode S3 25 % is permitted if the necessary
motor cooling is guaranteed before the motor is
switched on again! To ensure the required cooling, the
motor must be completely immersed for at least 1 min.
WILO SE 2019-02