Graco Inc 308639L Mountings, Air Line, Fluid Lines, Fluid Outlet Line, Fluid Suction Line

Installation

Mountings

CAUTION

The pump exhaust air may contain contaminants. Ventilate to a remote area if contaminants could affect your fluid supply. See Air Exhaust Ventila- tion on page 7.

DBe sure the mounting can support the weight of the pump, hoses, and accessories, as well as the stress caused during operation.

DFor all mountings, be sure the pump is secured with screws through the mounting feet (58). See the mounting feet in the Parts Drawing on page 22.

Air Line

WARNING

A bleed-type master air valve and a fluid drain valve are required on your system.

The bleed-type master air valve relieves air trapped between itself and the pump. Trapped air can cause the pump to cycle unexpectedly, which could result in serious bodily injury, including splashing in the eyes, injury from moving parts, or contamination from hazardous fluids.

The fluid drain valve reduces the risk of serious bodily injury, including splashing in the eyes or on the skin, or contamination from hazardous fluids. Install the fluid drain valve close to the pump’s fluid outlet to relieve pressure in the hose if the hose becomes plugged.

1.Mount the air line accessories on the wall or on a bracket. Be sure the air line supplying the accessories is grounded.

a.The pump speed can be controlled in one of two ways: To control it on the air side, install an air regulator. To control it on the fluid side, install a fluid valve near the outlet.

b.Install a bleed-type master air valve downstream from the air regulator, and use it to relieve trapped air. See the WARNING, above. Locate another bleed-type master air valve upstream from all air line accessories, and use it to isolate the accessories during cleaning and repair.

c.The air line filter removes harmful dirt and moisture from the compressed air supply.

2.Install a flexible air hose between the accessories and the pump air inlet. Screw the air line fitting into the air inlet.

3.Do not restrict the exhaust port. Excessive exhaust restriction can cause erratic pump operation.

Fluid Lines

WARNING

Graco always recommends that you use grounded fluid hoses to dissipate static electricity. When pumping non-conductive flammable fluids, groun- ded fluid hoses are required. See Fire and Explo- sion Hazard on page 3.

Fluid Outlet Line

1.Attach the fluid outlet hose to the fluid outlet flange by using a 3-in. ANSI or DIN flanged hose or pipe.

2.Install a fluid drain valve near the fluid outlet. See the WARNING in the Air Line section at left.

Fluid Suction Line

Attach the fluid suction hose to the pump fluid inlet flange by using a 3-in. ANSI or DIN flanged fluid suction hose or pipe.

DIf the inlet pressure to the pump is more than 25 percent of the outlet working pressure, the ball check valves do not close fast enough, which results in inefficient pump operation.

DAt inlet fluid pressures over 15 psi (100 kPa, 1.0 bar), diaphragm life is shortened.

DThe maximum suction lift is 8 ft (2.5 m) of water dry or 28 ft (8.5 m) of water wet. For suction lifts between 8 ft (2.5 m) and 28 ft (8.5 m) of water, it is necessary to install a foot valve, and it is necessary to flood the suction to prime the pump. The pump may prime better if you reduce the inlet air pressure until the pump is primed.

6 308639