Graco 3D150 important safety instructions Air Line, Fluid Suction Line, Fluid Outlet Line

Installation

Air Line

1.Install the air line accessories as shown in FIG. 2. Be sure the air line supplying the accessories is grounded.

a.The fluid pressure can be controlled with either an air regulator (F) to control the air into the pump, or with a fluid regulator (H) to control the fluid out of the pump.

b.Install a bleed-type master air valve (B) close to the pump. This valve is required in your system to relieve air trapped between it and the pump when the valve is closed. Trapped air can cause the pump to cycle unexpectedly which could result in serious injury including splashing in the eyes or on the skin, or injury from moving parts. Be sure the bleed valve is easily accessible from the pump, and is located downstream from the air regulator.

c.Install a second air valve (E) upstream from all air line accessories to isolate them during cleaning and repair.

d.Install an air line filter (D) to remove contami- nates such as dirt, moisture, and oil from the compressed air supply.

2.The air valve does not require lubrication.

3.Install a grounded, flexible air hose between the accessories and the pump air inlet. See Technical Data on page 24 to determine the air inlet size of your pump. Use a minimum 1/2 in.(13 mm) ID air hose.

Fluid Suction Line

•See Technical Data on page 24 to determine the fluid inlet size of your pump.

•Use conductive hoses (see FIG. 2). Screw the suc- tion line into the pump inlet snugly while supporting the inlet with a wrench. Use a compatible liquid thread sealant on connections to prevent air from entering the fluid line.

•For maximum suction lift (wet and dry) information, see Technical Data on page 24.

•Use an agitator to prevent fluid from settling out. Part number 245081 Agitator Kit (accessory) is available.

Fluid Outlet Line

1.Use electrically conductive fluid hoses (P). See FIG. 2. Screw the fluid fitting into the pump outlet (N) snugly while supporting the outlet with a wrench. See Technical Data on page 24 to determine the fluid outlet size of your pump.

2.Install a fluid regulator (H) at the pump fluid outlet to control fluid pressure, if desired. See Air Line step 1a for an alternative method to control pressure.

3.Install a fluid drain valve (J) near the fluid outlet.

A fluid drain (J) valve is required in your system to relieve pressure in the hose if it is plugged. The drain valve reduces the risk of serious injury, including splashing in the eyes or on the skin, or contamination from hazardous fluids when relieving pressure. Install the valve close to the pump fluid outlet. To use the valve as a circulation valve, connect a tube (K) between the valve and pail.

CAUTION

Some systems may require installation of a pressure relief valve at the pump outlet to prevent overpressur- ization and rupture of the pump or hose.

Thermal expansion of fluid in the outlet line can cause overpressurization. This can occur when using long fluid lines exposed to sunlight or ambient heat, or when pumping from a cool to a warm area (for exam- ple, from an underground tank).

Overpressurization can also occur if the pump is being used to feed fluid to a piston pump and the intake valve of the piston pump does not close, caus- ing fluid to back up in the outlet line.

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