Grounding

WARNING

Fire, Explosion, and Electric Shock Hazard

When operating the electrostatic gun, any ungrounded objects in the spray area (peo- ple, containers, tools, etc.) can become electrically charged. Improper grounding can result in static sparking, which can cause a fire, explosion, or electric shock. Follow the grounding instructions below.

The following are minimum grounding requirements for a basic electrostatic waterborne system. Your system may include other equipment or objects which must be grounded. Check your local electrical code for detailed grounding instructions. Your system must be connected to a true earth ground.

•Electrostatic Air Spray Gun: ground the gun by con- necting the red-colored Graco Grounded Air Hose and connecting the air hose ground wire to a true earth ground. See Check Electrical Grounding, page 18.

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•Graco Waterborne Fluid Hose: the hose is grounded through the conductive layer. Install the hose as instructed on page 11.

•All persons entering the spray area: shoes must have conductive soles, such as leather, or personal grounding straps must be worn. Do not wear shoes with non-conductive soles such as rubber or plastic. If gloves are necessary, wear the conductive gloves that are supplied with the gun. If non-Graco gloves are worn, cut off fingers or palm area of glove to ensure your hand contacts the grounded gun han- dle.

Installation

•Voltage Isolation System: electrically connect to a true earth ground, as instructed in the voltage isola- tion system manual.

•Object being sprayed: keep the workpiece hangers clean and grounded at all times. Resistance must not exceed 1 megohm.

•The floor of the spray area: must be electrically con- ductive and grounded. Do not cover the floor with cardboard or any non-conductive material which would interrupt grounding continuity.

•All solvent pails: use only grounded metal pails, which are conductive. Do not use plastic containers. Do not place the pail on a non-conductive surface such as paper or cardboard. Do not store more than the quantity needed for one shift.

•All electrically conductive objects or devices in the spray area: including fluid containers, tools, and wash cans, must be properly grounded.

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