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Fig. 12: Wet well installation, portable
6.4.6
Stationary dry well installation
30
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 portable installation, the pump must be equipped with a foot. The pump support foot
ensures the minimum ground clearance in the suction area and allows secure footing on a
firm foundation. Thus in this installation type, any positioning in the operating space/instal-
lation site is possible. To prevent sinking on soft surfaces, a hard base must be used at the
installation site. A pressure hose is connected on the pressure side. If operated for longer
periods of time, fix the pump firmly to floor. This prevents vibration and ensures quiet run-
ning and low wear.
Work steps
1
Pump foot
5
2
Pipe elbow with hose connection or Storz pipe coupling
6
3
Storz hose coupling
S1
4
Pressure hose
5
Lifting equipment
6
Attachment point
S*
Non-immersed operating mode: Observe information on the rating plate!
S*
‡
Pump foot mounted.
‡
1
Pressure connection prepared: Pipe elbow mounted with hose connection or pipe elbow
with Storz coupling.
1. Attach lifting equipment to the attachment point of the pump with a shackle.
2. Raise pump and set down on the intended work place (pump chamber, pit).
3. Place pump on a firm foundation. CAUTION! Sinking must be prevented!
4. Lay the pressure hose and fasten it to a certain point (e.g. drainage). DANGER! Separa-
tion or movement of the pressure hose can lead to (serious) injury! Attach pressure
hose securely to the outlet.
5. Correctly route power supply cable. CAUTION! Do not damage power supply cable!
▶ Pump is installed, the qualified electrician can carry out 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. 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!
In dry well installation, the operating space is divided into the collecting space and the ma-
chine room. In the collecting space, the fluid flows and is collected, the pump technology 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 installa-
tion:
▪ The suction- and pressure-side pipe system must be self-supporting. The pump must not
support the pipe system.
WILO SE 2019-01
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