Operation, Pressure Relief Procedure, Start the Pump

Operation

WARNING

INJECTION HAZARD

The system pressure must be manually relieved to prevent the system from starting or spraying accidentally. Fluid under high pressure can be injected through the skin and cause serious injury. To reduce the risk of an injury from injection. To reduce the risk of parts, follow the Pressure Relief Procedure whenever you:

•are instructed to relieve the pressure,

•stop spraying,

•check or service any of the system equipment,

•or install or clean the spray tips.

Pressure Relief Procedure

1.Lock the spray gun’s trigger safety.

2.Shut off ALL fluid supplies to the pump.

3.Close the bleed-type master air valve.

4.Unlock the spray gun’s trigger safety.

5.Hold a metal part of the spray gun firmly to the side of a grounded metal pail. Trigger the spray gun into the pail to relieve pressure.

6.Lock the spray gun’s trigger safety.

7.Open the sampling valves, having a container ready to catch the drainage.

8.If you suspect that the spray tip or nozzle or the hose is completely clogged or that pressure has not been fully relieved after following the steps above, follow this procedure: Very slowly loosen the tip guard retaining nut or hose end coupling and relieve pressure gradually, then loosen completely. Now clear the obstruction.

System Flushing

The pumps were tested with lightweight oil at the factory. Before operating the pump, thoroughly flush the Hydra-Cat H.P. to prevent contamination of your fluids.

NOTE:

Flush the mixer, hose and gun often enough to prevent fluid from reacting or curing in them. Contact your fluid manufacturer for the effective pot life of the fluid you are using.

1.Put the pump intake hoses into a 5 gallon (20 liter) container of a compatible solvent. Refer to the fluid manufacturer’s recommendations.

2.Start the pump as explained below.

3.Do not install a spray tip yet. Hold a metal part of the gun firmly to the side of a grounded metal pail. Using the lowest possible air pressure to the air motor that will activate the pump, trigger the gun into the pail.

4.When clean solvent comes from the spray gun, release the trigger and carefully check all connections in the system for leaks.

5.Take the hoses out of the solvent, and trigger the gun until all the solvent has been pumped out of the hoses. Immediately turn off the bleeder-type master air valve.

Start the Pump

1.Close the bleed-type master air valve, and turn the air regulator knob all the way out (counterclockwise).

2.Turn on the main air supply.

3.With the mixer manifold handle in the open position, trigger the gun, slowly open the bleed-type master air valve, and turn the air regulator knob clockwise until the pump starts.

4.Allow the pump to cycle slowly until all the air is pushed out of the lines. Release the trigger. The pump will stall against the pressure.

5.The manifold handle controls fluid flow. With the lever of the manifold in the open (down) position, base and catalyst are supplied to the gun. To stop the flow, move the handle to the closed (up) position.

Standard Operating Flushing

Use the solvent valves to flush contaminants and mixed fluids from the mixer manifold, hose and spray gun. Follow the procedure provided with the mix manifold assembly.

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965466, 965479, 965481, 965478, 965477 specifications

The Graco 965466, 965477, 965481, 965478, and 965479 are part of Graco's robust line of paint sprayers, designed with durability, efficiency, and ease of use in mind. Each model features advanced technologies that cater to both professionals and DIY enthusiasts, ensuring a clean, even finish in a variety of painting applications.

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In summary, the Graco 965466, 965477, 965481, 965478, and 965479 paint sprayers are engineered for superior performance, featuring innovations like the ProConnect system, SmartControl technology, and durable construction that meet the demands of varying painting tasks. Whether for professional contractors or enthusiastic DIYers, these sprayers offer the reliability and efficiency needed for a flawless finish.