Graco Inc 239130, 239136, 239129, 750, 239124, 239122, 239091, 239131, 239092 Installation, Grounding

Installation

Grounding

WARNING

FIRE AND EXPLOSION HAZARD When pumping flammable fluids, the surge suppressor must be grounded. Before pumping, ground the system as explained below. Also read the section FIRE OR EXPLOSION HAZARD on page 3.

Polypropylene surge suppressors are not conductive. Attaching the ground wire to the grounding lug grounds only the clamp or flange (see Fig. 1). When pumping conductive flammable fluids, always ground the entire fluid system by making sure the fluid has an electrical path to a true-earth ground.

To reduce the risk of static sparking, ground the surge suppressor and all other equipment in the pumping area. Check your local electrical code for detailed grounding instructions for your area and type of equip- ment. Ground all of this equipment:

DSurge suppressor: Attach a ground wire to the grounding lug (2) as shown in Fig. 1. Connect the clamp end of the ground wire to a true earth ground. To order a ground wire and clamp, order Part No. 222011.

NOTE: To connect the ground wire to the surge suppressor, first remove the copper connector from the non-clamp end of the ground wire and discard it, then push the bare wire through the grounding lug on the surge suppressor.

DFluid supply container: Follow your local code.

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2

Fig. 1

NOTE: When pumping conductive flammable fluids with a surge suppressor, always ground the entire fluid system. See the WARNING at left. Fig. 2 shows recommended methods of grounding fluid containers during filling. These are only guides; contact your Graco distributor for assistance in grounding your system.

DAir compressor: Follow the manufacturer’s recommendations.

DSolvent pails used when flushing: Follow your local code. Use only grounded metal pails, which are conductive. Do not place the pail on a non-conductive surface, such as paper or cardboard, which interrupts the grounding continuity.

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