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6.4.4
Stationary wet well installation
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5
6
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
NOTICE
Pumping problems due to water level being too low
If the fluid is lowered too much, separation of the volume flow may occur. Furthermore,
air cushions may form in the hydraulic system, resulting in undesirable behavior during
operation. The minimum permissible water level must reach up to the upper edge of the
hydraulics housing!
For wet well installation the pump is installed in the fluid. For this purpose a guide system
must be installed in the pump chamber. On the pressure side, the on-site pipe system is
connected to the guide system and on the suction side to the pump. The connected pipe
system must be self-supporting. The guide system must not support the pipe system!
Work steps
1
Gate valve
2
Non-return valve
3
Guide system
4
Guide pipes (to be provided by the customer)
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5
Attachment point for lifting equipment
6
Minimum water level
‡
Operating space/installation site is prepared for installation.
‡
Guide system and pipe system have been installed.
‡
Pump is prepared for operation on the guide system.
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1. Attach lifting equipment to the attachment point of the pump with a shackle.
2. Raise pump, guide over the pump chamber opening and slowly lower the guide claws
onto the guide pipes.
3. Lower the pump until the pump is mounted on the guide system and is automatically
coupled. CAUTION! When lowering the pump, hold the power supply cables slightly
taut!
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.
▶ Pump is installed, the qualified electrician can carry out the electrical connection.
WARNING
Danger of burning due to hot surfaces!
The motor housing can get hot during operation. It can lead to burns. Allow the pump to
cool down to ambient temperature after switching off!
WARNING
Separation of the pressure hose!
Separation or movement of the pressure hose can result in (serious) injuries. Attach pres-
sure hose securely to the outlet! Prevent buckling of the pressure hose.
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