Wilo T 12 Notice De Montage Et De Mise En Service page 87

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Fig. 11: Wet well installation, stationary
6.4.5 Portable wet well installation
Installation and operating instructions Wilo Motor T 12 ... 72 + EMU FA, Rexa SUPRA, Rexa SOLID
Installation and electrical connection
The pump is installed in the fluid for the wet well installation. For this, a suspension unit
must be installed in the chamber. On the pressure side, the on-site pipe system is con-
nected to the suspension unit and on the suction side to the pump. The connected pipe
system must be self-supporting. The suspension unit must not support the pipe sys-
tem!
Work steps
1 Gate valve
2 Non-return valve
3 Suspension unit
4 Guide pipes (provided by the customer)
2 5 Attachment point for the lifting equipment
6 Minimum water level
‡
Operating space/installation location is prepared for the installation.
‡
Suspension unit and pipe system were installed.
‡
Pump is prepared for operation on the suspension unit.
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1. Use a shackle to attach the lifting equipment to the attachment point of the pump.
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
If the fluid is lowered too much, separation of the volume flow may occur. Further-
more, air cushions may form in the hydraulic system, resulting in undesirable beha-
viour during operation. The minimum 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
can be installed anywhere in the operating space/installation site. A hard base must be
used at the installation location to prevent sinking in case of soft bearing surfaces. A
pressure hose is connected on the pressure side. If operated for longer periods of time,
fix the pump firmly to the floor. This prevents vibration and ensures quiet and low-
wearing running.
en
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