General Information; Safety; Installation Conditions; External Substrate Filter, Suitable For Pedestrian Loading - Graf Extern 400 Notice D'installation Et D'utilisation

1.1

Safety

All work should be undertaken in compliance with the relevant accident prevention regulations according
to BGV C22. A second person is required for safety reasons, particularly when inspecting tanks.
In addition, the applicable regulations and standards must be respected during installation, assembly,
maintenance, repairs etc. Relevant information can be found in the corresponding sections of these
instructions.
The installation of this system or individual system components must be carried out by specialists.
The cover must always be kept closed, except during necessary work on the filter, otherwise the risk of
accidents is high. The fit of the cover should be regularly checked. Only original GRAF covers, or covers
approved by GRAF in writing, are to be used.
GRAF provides an extensive range of accessories, which are all coordinated and can be combined to
form complete systems. The use of other accessories may result in restrictions of the system's
functionality and the warranty being void.
2.1

External substrate filter, suitable for pedestrian loading

- The filter with telescopic top piece and the green PE cover may only be installed in landscaped
areas which are not driven over.
- The PE cover must not be subjected to short-term loading of more than 150 kg or long-term
loading of more than 50 kg.
- The maximum installation depth down to the shaft bed is 5000 mm.
- The filter is suited to roof surface areas of up to 150 m
2.2

External substrate filter, suitable for vehicle loading

- The use of the telescopic attachment (anthracite) and the class B cast cover to DIN EN 124
allows the shaft to be installed under parking areas used by cars.
- The use of the telescopic attachment (anthracite) and the class D cast cover to DIN EN 124
allows the shaft to be installed under parking areas used by lorries.
- The maximum installation depth down to the shaft bed is 5000 mm.
- The filter is suited to roof surface areas of up to 150 m
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1.

General information

2.

Installation conditions

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2
when connected to DN 150.
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when connected to DN 150.