Maintaining The Attenuation System - Graf Ecobloc Inspect Smart Anleitung Für Den Betrieb Und Die Wartung

3.7

Maintaining the attenuation system

The catchment areas and the filtration units of an attenuation system must be cleaned as mentioned in
chapter 3.3 and 3.4.
Usually an attenuation system does not have a sedimentation or sand trap in front. Because of that and
depending on the type of catchment areas, the amount of debris brought into the tank can be high. To
prevent the attenuation tank of blocking, the pollution of the inlet and the outlet pipes should be controlled
regularly.
In case of a higher pollution inside the inlet or outlet pipes, the shafts of the tank or even the whole
attenuation tank should be cleaned by high pressure jetting.
Local drain Inspection companies can inspect and rinse the systems.
The EcoBloc Inspect Smart can be cleaned by high pressure jetting
An overview of recommended service intervals is provided in Table 2.
Installation setup
Without any pre filtration or
sedimentation
With sedimentation
With pre filtration and
sedimentation
¹ In case of a high amount of dirt brought into the system, the cleaning interval may need to be adapted
² Only if the pre filtration and the sedimentation in front of the tank is working correctly and be maintained regularly in
accordance to the manufacturers service instructions
3. Cleaning of the connected areas
Table 2
Activity
Inspection
Cleaning
Inspection
Cleaning
Inspection
Cleaning
17 / 18
Recommended service interval
every year
every 24 months¹
every year
no regular interval¹
every 5 years
no cleaning neccessary²