Operating manual Spray wall Basic 8000
6 Assembly and Commissioning
22 Order number 3305595 | Edition 07/2022
A poorly grounded work piece causes:
– dangerous electric charging of the work piece
– very bad wrap-around
– uneven coating
– back spraying to the spray gun, i.e., contamination
Prerequisites for perfect grounding and coating of a work piece are:
– Clean suspension of the work piece to be coated.
– Regular cleaning of powder residue from hanger
– Grounding of the spray booth, conveyor system and suspension equipment on site, in
accordance with the operating manual or the manufacturer's information
– That a grounding resistance of the work piece of 1 MΩ is not exceeded
(resistance to ground measured at 500 V or 1000 V).
Sparks between conveyor, conveyor hooks (hangers) and work piece can occur if
electric contact points between conveyor, conveyor hooks (hangers) and work piece
are not sufficiently cleaned and therefore the work pieces are not sufficiently
grounded! These sparks can cause heavy radio frequency interference (EMC).
6.8.1 Grounding the powder coating system
1 Only use mains cables with grounding strand!
2 Connect grounding cable with booth or spray wall and signal ground!
3 Connect grounding cable to an uncoated metal part of the booth or spray wall!
4 Remove all paint from hooks and other hanger parts!
5 Do not wear insulating gloves!
6 Wear electrostatically conductive footwear!
7 The floor must be electrostatically conductive!
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