Graco Inc 236-412, 308-230, 236-628, 236-868 General Information, Accessories, Hose Connections

Installation

General Information

1.The Typical Installations shown on pages 7 and

8 are only a guide for selecting and installing sys- tem components. Contact your Graco distributor or Graco Technical Assistance (see back page) for assistance in planning a system to suit your needs.

2.Always use Genuine Graco Parts and Accesso- ries, available from your Graco distributor. Refer to the Product Data Sheet for the pump, Form No. 305–528. If you supply your own accessories, be sure they are adequately sized and pressure rated for your system.

3.Use a compatible, liquid thread sealant orPTFEr tape on all male threads. Tighten all connections firmly to avoid air or fluid leaks. Do not over- tighten plastic threads.

4.Reference numbers and letters in parentheses re- fer to the callouts in the Figures and the parts lists on pages 12–17.

WARNING

TOXIC FLUID HAZARD

Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin, inhaled, or

swallowed.

1.Read TOXIC FLUID HAZARD on page 3.

2.Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Technical Data section of all equipment manu- als. Read the fluid and solvent manufacturer’s warnings.

Accessories

WARNING

A bleed-type master air valve (B) is required in your system to relieve air trapped between this valve and the pump. Trapped air can cause the pump to cycle unexpectedly, which could result in serious injury, including splashing in the eyes or on the skin, injury from moving parts, or contamination from hazardous fluids.

A fluid drain valve (J) is required in your system to relieve pressure in the hose if it is plugged. (The fluid recirculation valve supplied with Models 236–870, 224–833, and 236–412 will serve this purpose.) The drain valve reduces the risk of seri- ous 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’s fluid outlet.

1.Install the air line accessories as shown in Figs. 3 and 4. Mount these accessories on the wall or on a bracket. Be sure the air line supplying the acces- sories is grounded.

a.Locate one bleed-type master air valve (B) close to the pump and use it to relieve trapped air. See the WARNING above. Locate the oth- er master air valve (E) upstream from all air line accessories and use it to isolate them dur- ing cleaning and repair.

b.The air line filter (F) removes harmful dirt and moisture from the compressed air supply.

2.Install an electrically conductive, flexible air hose

(C) between the accessories and the pump. Use a minimum 1/4” (6.3 mm) ID air hose. Screw an air line quick disconnect coupler (D) onto the end of the air hose (C). Do not connect the coupler (D) to the air inlet fitting (22, see Figs. 1 and 2) yet.

Hose Connections

1.Read the entire spray gun manual before connect- ing the hoses and operating the sprayer.

2.Connect a fluid hose (N) between the pump fluid outlet fitting and the fluid inlet of the spray gun (R). See Figs. 3 and 4.

3.Connect an electrically conductive air hose (P) be- tween the outlet fitting of the gun air regulator (G) and the air inlet of the spray gun (R).

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