26
PEM-X1
OPERATING MANUAL
VERSION 03/2014
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
Heavy powder mist if grounding is insuffi
cient!
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 spray gun is grounded via the gun cable between the control unit and spray
gun.
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 poor wrap-around,
uneven coating,
back spraying to the spray gun, i.e. contamination.
Prerequisites for perfect grounding and coating are:
Clean work piece suspension.
Grounding of spray booth, conveyor system and suspension on the building side in
accordance with the operating manuals 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 (megohm).
(Resistance to ground measured at 500 V or 1,000 V).
