25
PEM-X1
OPERATING MANUAL
VERSION 09/2012
ORDER NUMBER DOC 2326020
6.6
GROUNDING
No grounding!
Risk of explosion and risk of electric shock.
Electrostatic control units and the associated spray equipment
may only be connected to mains supplies with a protective
conductor connection (PE conductor)!
DANGER
Defective grounding will result in high levels of powder mist!
Danger of poisoning.
Insuffi
cient paint application quality.
Ground all device components.
Ground the work pieces to be coated.
WARNING
For safety reasons, the control unit must be properly grounded. The ground connection
to the energy supply (socket) takes the form of the mains connection cable's protective
conductor, while that to the work piece / system is via the knurled screw on the rear of the
control unit. Both connections are absolutely essential. If installed correctly as described
above, the gun is grounded via the gun cable between the control unit and gun.
To achieve optimum powder coating, a fl awless grounding of the work piece is also
necessary.
A poorly grounded work piece causes:
Dangerous electric charging of the work piece.
Very poor wrap around.
Uneven coating.
Back-spray to the spray gun, i.e. contamination.
Prerequisites for perfect grounding and coating are:
Clean suspension of the work piece to be coated.
Grounding of spraying booth, conveyor system and suspension by the customer in
accordance with the operating instructions or the manufacturer's information.
Grounding of all conductive parts within the working area.
The grounding resistance of the work piece may not exceed 1 MΩ (megaohm).
(Resistance to ground measured at 500 V or 1000 V).
