Wilo FKT 50.1 Series Installation And Operating Instructions Manual page 184

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Fig. 11: Wet well installation, stationary
6.4.5 Stationary dry well installation
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Installation and electrical connection
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
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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.
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!
In dry well installation, the operating space is divided into the collecting space and the
machine room. In the collecting space, the fluid flows and is collected; the pump tech-
nology is installed in the machine room. The pump is installed in the machine room and
connected to the pipe system on the suction and pressure side. Observe the following
points for installation:
▪ The suction- and pressure-side pipe system must be self-supporting. The pump must
not support the pipe system.
▪ Connect the pump to the pipe system ensuring that it is free of stress and vibrations.
The use of elastic connection pieces (compensators) is recommended.
▪ The pump is not self-priming, in other words, the fluid must flow in either automatically
or with supply pressure. The minimum level in the collecting space must be at the same
height as the upper edge of the hydraulics housing!
▪ Max. ambient temperature: 40 °C (104 °F)
WILO SE 2019-01