Installation, Grounding, Positioning the Unit

Installation

NOTES:

DReference numbers and letters in parentheses in the text refer to the callouts in the figures and the parts drawing.

DAccessories are available from your Graco repre- sentative. If you supply your own accessories, be sure they are adequately sized and pressure-rated to meet the system’s requirements.

Grounding

Proper grounding is an essential part of maintaining a safe system.

To reduce the risk of static sparking, the pump, mount- ing cover, and all electrically conductive objects or devices in the spray area must be properly grounded. Check your local electrical code for detailed grounding instructions for your area and type of equipment.

For a ground wire and clamp, order

Part No. 237569.

Pump: Connect one end of a 12 ga (1.5 mm@) mini- mum ground wire (A) to the ground connector (B) on the pump. See Fig. 1. Connect the other end of the wire to a true earth ground.

Agitator and drum cover: Connect one end of ground wire (A) to ground connector (B) on rim of drum cover. See Fig. 1. Connect other end of ground wire to true earth ground.

Object being sprayed: Follow your local code.

Fluid supply container: Follow your local code.

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

To maintain proper grounding continuity when flushing or relieving pressure, always hold the metal part of the spray gun firmly to the side of a grounded metal pail, then trigger the gun.

Positioning the Unit

DSelect a convenient location for the unit. The air valves for the pump (37), agitator (5), and elevator

(3) must be fully accessible.

DThe elevator needs 9 ft (2.8 m) of overhead clear- ance. Bolt the elevator to the floor as shown in the elevator instruction manual 306287.

System Accessories

WARNING

A bleed-type master air valve (A) and a fluid drain valve (M) are required in your system. These accessories help reduce the risk of serious injury, including fluid injection and splashing of fluid in the eyes or on the skin, and injury from moving parts if you are adjusting or repairing the pump or agitator.

Fig. 1

The bleed-type master air valve relieves air trapped between this valve and the pump after the air is shut off. Trapped air can cause the pump to cycle unexpectedly. Locate the valve close to the

Air and fluid hoses: Use only electrically conductive hoses with 500 ft (150 m) maximum combined hose length to ensure grounding continuity.

Air compressor: Follow manufacturer’s recommenda- tions.

Spray gun: Connect to a properly grounded fluid hose and pump.

pump. Order Part No. 107141.

The fluid drain valve assists in relieving fluid pres- sure in the displacement pump, hose, and gun. Triggering the gun to relieve pressure may not be sufficient. Order Part No. 210658.

6 306706