Nordson Encore Customer Product Manual
Also see for Encore: Customer product manualProduct manualCustomer product manualOperator cardInstruction sheet
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Installation 3-5Part 1615897-01 2019 Nordson CorporationGroundingWARNING: Consoles and all conductive equipment in the spray areaMUST be connected to a true earth ground. Use the provided groundcables to ground the consoles. Mount junction boxes and control panels togrounded stands or the booth base. Failure to observe this caution couldresult in severe shocks to personnel, fire, or explosion.Proper grounding of all conductive components of a powder coating systemprovides both shock and electrostatic discharge protection for bothoperators and sensitive electronic equipment. Many system components(booth, collector, color modules, control consoles, and conveyor) areconnected both physically and electrically. It is important that the propergrounding methods and equipment are used when installing and operatingthe system.PE (Protective Earth) GroundingPE grounding is required on all conductive metal electrical enclosures in asystem. PE grounding is provided by a ground conductor wire bonded to atrue earth ground. PE grounding protects operators from electrical shock byproviding a path to ground for electrical current if a conductor contacts anelectrical enclosure or other conductive component. The ground conductorwire carries the electrical current directly to ground and short circuits theinput voltage until a fuse or circuit breaker interrupts the circuit.The sole purpose of the green/yellow ground wires bundled with the ACinput power cable is to protect personnel from a shock. They must be usedfor PE grounding only. These ground wires do not protect equipmentagainst electrostatic discharge.Electrostatic GroundingElectrostatic grounding protects electronic equipment from damage causedby electrostatic discharges (ESD). Some electronic components are sosensitive to ESD that a person can deliver a damaging static dischargewithout feeling even a mild shock.Proper electrostatic grounding is mandatory in an electrostatic powdercoating system. Powder spray guns generate electrostatic voltages up to100,000 V. It does not take long for ungrounded system components tobuild up an electrical charge strong enough to damage sensitive electroniccomponents when discharged.Electrostatic discharges occur at very high frequencies, around 100 MHz.An ordinary ground conductor does not conduct such high frequencies wellenough to prevent damage to electronic components. Special flat-braidedcables are provided with Nordson powder coating equipment to protectagainst ESD. |
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