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Installation and electrical connection
16
WILO SE 2019-10
6.4.2
Portable wet well installation
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.
For portable installation, the pump is equipped with a strainer. The strainer filters coarse
solids out of the fluid and enables secure standing if placed on a solid load bearing sur-
face. This allows the pump to be installed anywhere in the operating space/installation
location. To prevent sinking in, a hard base must be used at the installation location in
case of soft load bearing surfaces. A pressure hose or pipework is connected on the
pressure side.
Work steps
1
2
3
4
5
6
7
Fig. 3: Wet well installation, portable
1
Pressure hose
2
Storz coupling (pressure hose)
3
Storz coupling (pressure connection)
4
Suction strainer
5
Pump
6
Handle: Attachment point for lifting equipment
7
Connection cable
‡
Pressure connection prepared: Hose connection or Storz coupling fitted.
1. Use a shackle to attach the hoisting gear to the attachment point of the pump.
2. Lift and align the pump at the installation location.
3. Place the pump on a solid load bearing surface.
CAUTION! Prevent the pump sink-
ing in!
4. Lay the pressure hose and fasten it to a certain point (e.g. drainage).
DANGER! Separation or movement of the pressure hose can lead to (serious) in-
juries! Secure the pressure hose at the outlet.
5. Lay the connection cable properly.
CAUTION! Do not damage the connection
cable!
▶ The pump is installed, the qualified electrician can make the electrical connection.
6.4.3
Level control
With a level control device, the current fill levels are determined and the pump is
switched on and off automatically depending on the fill levels. Fill levels are recorded by
using different sensor types (float switches, pressure and ultrasound measurements or
electrodes). The following must be observed when using a level control device:
ƒ
Float switches can move freely!
ƒ
The water level must
not fall below
the minimum permissible!
ƒ
The maximum switching frequency
must not be exceeded
!
ƒ
If the fill levels fluctuate strongly, a level control with two measuring points is re-
commended. This makes it possible to achieve larger differential gaps.
Use of attached float switch
The “A” version is equipped with a float switch. The pump is switched on and off de-
pending on the fill level. The switching level is determined by the cable length of the
float switch.
Use of on-site level controls
When using an on-site level control device, refer to the manufacturer’s own installation
and operating instructions for specifications on the installation.
