Kessel 93007/120D, Installation And Operating Instructions Manual

Page: 28 / 116

EN
4.2 Installation requirements
Requirements for positioning and quality of the excavations
classify the in-situ soil requirements (soil properties) with regard to the structural suitability (e.g. DIN 18196 or USCS -
Unified Soil Classification System).
Check whether groundwater exists, determine the maximum groundwater level. If this exceeds the groundwater resis-
tance (see Technical Data chapter), contact the factory customer service. Ensure drainage of impermeable soils.
Ensure frost-free installation depth of the inlet/outlet pipes for all-year use. The installation depth must be clarified taking
into consideration the minimum and maximum soil cover.
The traffic load (load class) must be clarified. If necessary, cover plates with a higher class must be procured, and/or load
distribution plates must be built on site. The standard road construction must be complied with in trafficable areas.
Loads from adjacent foundations or laterally pressing soil pressure must be avoided, or prevented by countermeasures
taken on site.
PVC-U pipes, PP or PE pipes are suitable pipes for further laying. EN 124 and EN 476 must be complied with.
A stilling section, with length at least equal to ten times the cross-section of the inlet pipe, must be provided directly
upstream of the separator. The transition from downpipes to horizontal pipes must be made with two 45° bends and a 250
mm length of pipe between them.
4.3 Digging out the excavations
The size of the excavations must include at least 50 cm all round the outside of the tank as working space.
Excavate the slope angle β according to the in-situ soil requirements.
Place subbase layer consisting of 30 cm deep compacted crushed stone (0-16 mm grading range; 97% D
pr
).
Place a levelling layer of sand (3-10 cm).
4.4 Installing the extension section (option)
In case of deeper installation the LW800 extension section
must be installed.
Insert the lip seal (LW800).
Grease the inner contact surfaces of the seal.
Push in the upper section completely.
28 / 116 Installation and operating instructions 010-224