Graf one2clean, Instruction For Use & Installation Instructions

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2 . Notes
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2. Notes
2.1 Safety
Observe the national accident prevention regulations during all work. Particularly for inspecting the tanks,
a second person is required for safety reasons.
Furthermore, observe the valid national regulations and standards during installation, assembly, mainte-
nance and repair work, etc.
During all work on the system or parts thereof, always shut down the entire system and secure it against
unauthorised re-start.
Always keep the tank cover closed, except when working in the tank. Otherwise, there is a high risk of an
accident occurring. Only genuine GRAF covers or covers that GRAF has approved in writing must be
used.
GRAF offers an extensive range of accessories, which are all coordinated to one another and can be
expanded to form complete systems. The use of other accessories can impair the functionality of the sys-
tem and invalidate the warranty for any damages caused as a result.
2.2 Ventilation and bleeding
All tanks must be ventilated and bled. Additional ventilation lines or ventilation openings must be ordered
if necessary. Ventilation lines should be ordered to guarantee natural ventilation (chimney effect).
Bleeding with a free outflow Bleeding with percolation or an obstructed outflow