Stationary Dry Well Installation - Wilo Rexa PRO Instrucciones De Instalación Y Funcionamiento

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Fig. 6: Wet well installation, portable
6.4.5

Stationary dry well installation

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Installation and electrical connection
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.
Note on non-immersed operation
▪ P 13 motor: The motor can be run non-immersed in "non-immersed" operating mode
(S1, S2-30, S3 25 %*).
▪ P 17 motor: The motor can be run non-immersed for short periods.
CAUTION! To protect the motor winding from overheating, the motor must be
equipped with a temperature controller! If only one temperature limiter is installed,
the motor must not emerge during operation.
* Operating mode S3 50 % is permitted if the necessary motor cooling is guaranteed
before the motor is switched on again! To ensure the required cooling, the motor must
be completely immersed for at least 1 min.!
Work steps
1 Pump support 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 support foot mounted.
1 ‡
Pressure connection prepared: Pipe elbow with hose connection or pipe elbow with
Storz coupling mounted.
1. Use a shackle to attach the lifting equipment to the attachment point of the pump.
2. Lift the pump and lower it at the intended location (chamber, pit).
3. Place the pump on a solid bearing surface. CAUTION! Sinking must be prevented!
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! Securely attach the pressure hose to the outlet.
5. Lay the power supply cable properly. CAUTION! Do not damage the power supply
cable!
▶ 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!
NOTICE
Pumping problems due to water level being too low
The hydraulics are self-venting. Smaller air cushions are resorbed during pumping. If
the fluid is lowered too much, separation of the volume flow may occur. The min-
imum 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.
WILO SE 2019-02