Graco 288048 important safety instructions Setup

Setup

Setup

Air Line and Accessory	Fluid Line and Accessory
Recommendations	Recommendations

1.Install an air pressure regulator on the gun cylinder air supply line.

A minimum of 70 psi (0.49 MPa, 4.9 bar) air pres- sure must be supplied to the cylinder for proper operation. Air pressure opens the valve, a spring closes the valve. A three-way air valve, which exhausts cylinder air, is required.

2.Install a bleed-type air shutoff valve on the main air line. Install an additional bleed-type valve on each pump air supply line, downstream of the pump air regulator, to relieve air trapped between this valve and the pump after the air regulator is shut off.

The bleed-type air shutoff valve is required in your sys- tem to relieve air trapped between this valve and the pump after the air regulator is closed. Trapped air can cause the pump to cycle unexpectedly, which could result in serious injury.

3.Install a bleed-type air shutoff valve on the gun air cylinder supply line, downstream of the air regulator, to shut off air to the gun cylinder. Connect the air supply line to the gun cylinder air inlet (C). See Fig. 4.

The cylinder air inlet accepts 1/4 in. (6.3 mm) O.D. tubing.

•A fluid drain valve(s) is required in your system to assist in relieving fluid pressure in the displacement pump, hose and gun; triggering the gun to relieve pressure may not be sufficient.

•A fluid pressure regulator must be installed in the system if the pump's maximum working pressure exceeds the gun's maximum fluid working pressure (see the front cover).

1.Install a fluid filter and drain valve(s) close to the pump's fluid outlet.

2.Install a fluid pressure regulator to control fluid pres- sure to the gun.

Some applications require fine-tuned control of fluid pressure. You can control fluid pressure more accu- rately with a fluid pressure regulator than by regu- lating the air pressure to the pump.

3.Install a fluid shutoff valve to shut off the fluid supply to the gun.

4.For paint spray applications, install an in-line fluid fil- ter, part no. 210500, on the gun fluid inlet (F) to avoid clogging the spray tip with particles from the fluid. See Fig. 4.

5.Connect the electrically conductive fluid hose to the gun fluid inlet (F) or optional in-line filter.

8 311053H