Graco 3A2495C important safety instructions Grounding

Gun Setup

Grounding

When operating the electrostatic gun, any ungrounded objects in the spray area (people, containers, tools, etc.) can become electrically charged. Improper grounding can result in static sparking, which can cause a fire, explosion, or electric shock. Ground all equipment, personnel, object being sprayed, and conductive objects in or close to the spray area. Resistance must not exceed 1 megohm. Follow the grounding instructions below.

The following are minimum grounding requirements for a basic electrostatic system (see Figs. 12–15). 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.

•Pump/fluid source: ground the pump/fluid source by connecting its ground wire to a true earth ground.

•Electrostatic Air-Assisted Spray Gun: ground the gun by connecting the Graco Grounded Air Hose to the gun, and connecting the air hose ground wire to a true earth ground. See Check Gun Electrical Grounding, page 25.

•Object being sprayed: keep the workpiece hangers clean and grounded at all times.

•All electrically conductive objects or devices in the spray area: must be properly grounded.

•Fluid and waste containers: ground all fluid and waste containers in the spray area. Do not use pail liners unless they are conductive and grounded. When flushing the spray gun, the container used to catch the excess fluid must be electrically conductive and grounded.

•Air compressors: ground the equipment according to the manufacturer's recommendations.

•All air and fluid lines must be properly grounded. Use only grounded hoses with a maximum of 100 feet (30.5 m) combined hose length to ensure grounding continuity

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