Space requirements
Rooms housing sewage lifting units must be large enough to provide a working space of at least 60 cm in width and height next to and above all parts requiring operation and maintenance. The installation room must be adequately lit and subject to adequate aeration and ventilation.
Tip: As a rough guide, the following minimum dimensions can be used for pump sumps:
- For twin-pump systems: min. 1.40 x 1.40 m
- For single-pump systems: min. 1.20 x 1.20 m
Soundproofing
Sound insulation in lifting stations is an important aspect that is often underestimated – yet it is of great significance. Lifting stations are equipped with motors and pumps that generate noise when in operation. Free-standing lifting stations, in particular, transmit sound directly into their surroundings. To minimise unwanted noise, the following steps should be taken:
Distance from living areas:
Where possible, lifting stations should be positioned away from living and sleeping areas to further reduce noise. Pressure pipes or pressure loops should not be routed through living and sleeping areas.
Decoupling:
To reduce oscillations and vibrations, lifting stations should be mounted on a vibration-damping base. At KESSEL, these are already included in the scope of delivery. The transition from the lifting station, particularly to the pressure pipe, should be made using a flexible coupling to prevent the transmission of vibrations from the lifting station to the pipework.
Regular maintenance:
Regular maintenance of the lifting station is important to ensure that all components are functioning properly. Wear parts should be replaced in good time to avoid unnecessary noise.
The following components must always be included in the design:
a. Inlet pipe
b. Pressure pipe
c. Ventilation pipe
a. Supply pipe
All pipework must always be laid in such a way that it can drain by itself. All pipe connections must be flexible and sound-insulated. A gate valve must be provided in the inlet in accordance with DIN 12056-4.
Generally, two connection types are possible:
- Use of the existing, moulded sockets on the tank.
- Connections to the horizontal drilling surfaces. Here, inlet pipes can be installed in various positions and at different heights.
b. Pressure pipe
In the case of free-standing installation within the building, the pressure pipe is usually laid in front of the wall, in installation shafts or suspended ceilings, extending from the lifting station.
Pressure pipes within buildings are available in various materials. The most common are HD-PE and SML. For smaller dimensions, stainless steel or PVC-U pipes are also frequently used. Further information can be found in the chapter on pressure pipes.
For a pumping height of more than 5 m and a flow rate of more than 20 m³/h, we recommend the use of cast iron shut-off valves and backwater preventers.
c. Ventilation pipe
For free-standing units, the ventilation pipe is connected directly to the tank.
Further information can be found in the section on ventilation pipes.
