Nordson Smart Gun - Page 8

© 2021 Nordson Corporation
7446567-02
1-5
Safety
Grounding
WARNING:  Operating faulty electrostatic equipment is hazardous and can cause
electrocution, re, or explosion. Make resistance checks part of your periodic
maintenance program. If you receive even a slight electrical shock or notice static
sparking or arcing, shut down all electrical or electrostatic equipment immediately. Do
not restart the equipment until the problem has been identied and corrected.
Grounding inside and around the booth openings must comply with NFPA requirements
for Class II, Division 1 or 2 Hazardous Locations. Refer to NFPA 33, NFPA 70 (NEC
articles 500, 502, and 516), and NFPA 77.
• All electrically conductive objects in spray areas shall be electrically connected to
ground with a resistance of not more than 1 megohm as measured with an instrument
that applies at least 500 volts to the circuit being evaluated.
• Equipment to be grounded includes, but is not limited to, the oor of the spray area,
operator platforms, hoppers, photoeye supports,and blow-o󰀨 nozzles. Personnel
working in the spray area must be grounded.
• There is ignition potential from a charged human body. Personnel standing on a
painted surface, such as an operator platform, or wearing non-conductive shoes, are
not grounded. Personnel must wear shoes with conductive soles or use a ground
strap to maintain a connection to ground when working with or around electrostatic
equipment.
• Operators must maintain skin-to-handle contact between their hand and the gun
handle to prevent shocks while operating manual electrostatic spray guns. If gloves
must be worn, cut away the palm or ngers, wear electrically conductive gloves, or
wear a grounding strap connected to the gun handle or other true earth ground.
• Shut o󰀨 electrostatic power supplies and ground gun electrodes before making
adjustments or cleaning powder spray guns.
• Connect all disconnected equipment, ground cables, and wires after servicing
equipment.