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VERSION 03/2020 ORDER NUMBER DOC2330732
VU 1/VU 2/VU 3
6.13 GROUNDING
For safety reasons, the reciprocator must be properly grounded. The grounding takes
place through the connection of the grounding cable on the grounding connection of
the reciprocator (see Chapter 6.5). For this, WAGNER recommends the use of a copper
cable of at least 4 mm with adequate mechanical strength.
Good grounding of the work piece is also necessary for optimum powder coating.
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:
– electroconductive suspension for the work piece that is to be coated,
– grounding of the powder coating booth, transport and suspension equipment to
be provided on site in accordance with the corresponding operating manuals or the
denitions laid down by the manufacturer,
– regular cleaning of hangers from powder residues,
– that a grounding resistance of the work piece of 1 M is not exceeded
(resistance to ground measured at 500 V or 1000 V),
– grounding cable connected to the controller module or control cabinet.
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 suciently cleaned and therefore the work pieces are not suciently grounded!
These sparks can cause heavy radio frequency interference (EMC).
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