Troubleshooting

Relieve the pressure before you check or service the equipment.

Check all possible problems and causes before you disassemble the pump.

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 8.

Internal Air Valve-Operated and Remote Solenoid-Operated Pumps

PROBLEM

CAUSE

SOLUTION

 

 

 

The pump cycles at stall, or it fails

The check valves (20) or o-rings

Replace the check valves and/or

to hold pressure at stall.

(21) are leaking.

o-rings. See page 14.

 

 

 

 

The check valves (20) are worn.

Replace the check valves.

 

 

See page 14.

 

 

 

 

Debris is stuck between the a check

Clean the check valve/seat area.

 

valve (20) and the seat.

See page 14.

 

 

 

The pump operates erratically.

The suction line is clogged.

Inspect and clear the line.

 

 

 

 

The check valves (20) are sticking

Replace the check valves, or clean

 

or leaking.

and check the valve/seat area.

 

 

See page 14.

 

 

 

 

A diaphragm (30) is ruptured.

Replace the ruptured diaphragm.

 

 

See page 13.

 

 

 

There are air bubbles in the fluid.

The suction line is loose.

Tighten the suction line.

 

 

 

 

A diaphragm (30) is ruptured.

Replace the ruptured diaphragm.

 

 

See page 13.

 

 

 

 

The manifold (52) is loose, or the

Tighten the manifold screws (58).

 

o-rings (21) are damaged.

Replace the o-rings (21).

 

 

See page 14.

 

 

 

 

The fluid covers (51) are loose.

Tighten the fluid cover screws (58).

 

 

See page13.

 

 

 

There is fluid in the exhaust air.

A diaphragm (30) is ruptured.

Replace the ruptured diaphragm.

 

 

See page 13.

 

 

 

 

A diaphragm plate (50) is loose.

Tighten the diaphragm plate.

 

 

See page13.

 

 

 

The pump exhausts air near the

The fluid covers (51) are loose, or

Tighten the fluid cover screws (58),

fluid covers.

the o-rings (57) are damaged.

or replace the o-rings. See page13.

 

 

 

The pump exhausts air near the air

The air valve cover screws (14) are

Tighten the screws. See page 12.

valve.

loose.

 

 

 

 

 

The top (5) and/or side (6) air valve

Replace these o-rings.

 

o-rings are damaged.

See the Parts Drawing on

 

 

page 17.

 

 

 

The pump leaks fluid from the

The o-rings (21) are leaking, or the

Replace these o-rings, and tighten

check valves.

screws (58) are loose.

the screws. See page 14.

 

 

 

10 308652

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Graco 308652Y important safety instructions Troubleshooting, Problem Cause Solution
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308652Y specifications

The Graco 308652Y is an advanced paint sprayer designed to deliver professional-quality results for both DIY enthusiasts and professional contractors. Engineered with cutting-edge technology, this model stands out for its efficiency, ease of use, and versatility, making it a popular choice in the market.

One of the main features of the Graco 308652Y is its TrueAirless Technology. This innovative system allows users to spray unthinned paint, providing a flawless finish without the need for additional thinning agents that can compromise the paint’s integrity or performance. The ability to spray a wide variety of materials, from water-based and oil-based paints to stains and sealers, makes it exceptionally versatile.

Another remarkable characteristic of this sprayer is its high-output design. The Graco 308652Y is equipped with a powerful motor that delivers consistent pressure, ensuring a smooth and even spray pattern. It features a maximum pressure rating of up to 3,000 PSI, allowing users to tackle larger jobs quickly and efficiently, saving both time and effort.

Additionally, the Graco 308652Y comes with a stainless steel piston pump that is not only durable but also minimizes the risk of clogs during operation. This enhanced durability means that users can rely on the sprayer for extended use, even with heavy-duty applications.

The model is designed for ease of use, featuring an adjustable pressure control that enables users to customize the flow based on their project requirements and the surface material being painted. This flexibility allows for greater control during application, helping reduce overspray and ensuring precise coatings.

Portability also makes the Graco 308652Y a standout in the industry. It includes a lightweight structure with a comfortable handle, making it easy to transport between job sites. The unit is designed for quick setup and breakdown, allowing users to get to work with minimal hassle.

Lastly, the Graco 308652Y prioritizes user safety with an integrated cleaning system, making it easier to maintain and ensuring longevity. By combining exceptional features with user-friendly technology, the Graco 308652Y stands out as a top choice for anyone seeking efficiency, quality, and reliability in their painting projects.
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