Portable Wet Well Installation - Wilo Rexa PRO Instrucciones De Instalación Y Funcionamiento

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Fig. 5: Wet well installation, stationary
6.4.4

Portable wet well installation

Installation and operating instructions Wilo-Rexa PRO
Installation and electrical connection
Note on non-immersed operation
▪ P 13 motor: The motor can be run non-immersed in "non-immersed" operating mode
(S1, S2-30, S3 25 %*).
▪ P 17 motor: The motor can be run non-immersed for short periods.
CAUTION! To protect the motor winding from overheating, the motor must be
equipped with a temperature controller! If only one temperature limiter is installed,
the motor must not emerge during operation.
* Operating mode S3 50 % 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.!
Work steps
1 Suspension unit
2 Non-return valve
3 Stop valve
4 Guide pipe (provided by the customer)
5 Lifting equipment
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6 Attachment point for the lifting equipment
S* Non-immersed operating mode: Observe information on the rating plate!
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6 Operating space/installation location is prepared for the installation.
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Suspension unit and pipe system were installed.
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Pump is prepared for operation on the suspension unit.
S1
1. Use a shackle to attach the lifting equipment to the attachment point of the pump.
S*
2. Lift the pump, swivel it above the chamber opening and slowly lower the guide
claw onto the guide pipe.
3. Lower the pump until it sets on the suspension unit and is connected automatical-
ly. CAUTION! Hold the power supply cables slightly taut when lowering the
pump!
4. Loosen the lifting equipment from the lifting gear and secure it at the chamber
outlet against falling.
5. Have the power supply cables routed into the chamber by a qualified electrician
and route it outside properly from the chamber.
▶ The pump is installed, the qualified electrician can make the electrical connection.
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 min-
imum permissible water level must reach the upper edge of the hydraulics housing!
For portable installation, the pump must be equipped with a pump support foot. The
pump support foot ensures minimum ground clearance in the suction area and enables
secure footing if placed on a solid bearing surface. In this installation type, the pump
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