Caution
- Hazard through heavy weights
-
The pre-assembled bottom part of the chamber, the chamber
cover and the pump(s). The parts may only be lifted and/or
assembled using suitable equipment and exercising appro-
priate caution.
- Danger of slipping
-
-
There is a danger of slipping during entry into the inspection
chamber. For this reason, a second person must always be
available to monitor the entry into the chamber from the out-
side.
- Danger of tilting
-
Before the excavation pit is backfilled, there is a risk of the
chamber tilting. For this reason, no-one may enter the cham-
ber until the excavation pit has been completely backfilled.
4.1 Installation of the chamber system
The excavation base must be levelled horizontally with 30 cm
gravel and compacted. 10 cm sand must be added to this.
Now the chamber is set down on its whole surface. Observe
the position of the inlet, ventilation and cable conduit pipes
as well as the position of the pressure pipe (see section 4.2).
The chamber system must be filled with gravel (type G1 ac-
cording to ATV-A127) in 30 cm layers-each layer to be com-
pacted. When the connection heights are reached, pipes
must be connected accordingly (see section "Connecting
the pipes").
When installing chamber systems, the respective load
class must be heeded. If the chamber is installed in a pe-
destrian area (Class A/B) or where light traffic drives over
it (Class A/B), the projecting attachment piece must be
made flush with the ground level (see diagram).
When installing in Class D areas, a concrete base plate
(height = 150 mm approx. 2 x 2 m) must be cast around
the attachment piece. A formwork plan and reinforcement
drawing can be provided on request.
When installed in groundwater, the chamber system
must be secured against buoyancy. Chamber LW 600 (up
to 2.5 m) is resistant to groundwater, but has to be secu-
red against buoyancy by a negative-buoyancy ring made
of concrete (height approx. 30 cm, width approx. 30 cm)
around the entire chamber above the perimeter ring near
base of the chamber
Check all connections for leaks
4.1.1 Assembly of chamber system LW 600
Before installation, care must always be taken that the pressure
pipes are at a frost-free depth after installation. In addition,
the installation depth must be chosen in such a way that the
pump removal (pressure pipe connection) can be reached from
above, since chamber LW 600 cannot be entered. For this rea-
son, extensions must not be used.
328-221
Installation and assembly
23 /84
Installation without groundwater
Einbau ohne Grundwasser
Concrete
Betonpflaster
4-6 cm sand
4-6 cm Splitt
fine gravel
Soil
Erdreich
Fig. 8
The chamber system LW 600 is ready for installation and only
has to be fitted with the attachment piece. For this purpose,
the seal must be inserted into the chamber, greased, and the
attachment piece set to the required ground level (see section
4.2.1). Care must be taken that the attachment piece does not
rest on the pressure pipe, but is shortened accordingly.
The enclosed pressure pipe must be screwed to the pump(s)
and inserted with it into the chamber. The lugs on the base
are for fixing the pump in place. The pump is connected to the
pressure pipe via the red locking lever.
Installation of the outlet pressure pipe
Granitpflaster
30 cm Gravel
30 cm Mineralbeton
(Schotter)
Pull the O-ring onto the
riser and use 2 screws
to screw it to the pump
(see Fig. 9).
Fig. 9
2017/02