Troubleshooting

 

 

 

 

WHAT TO CHECK

WHAT TO DO

TYPE OF PROBLEM

If check is OK, go to next check

When check is not OK, refer to this column

 

 

 

Pump output is low

Pump rod damage

Repair pump. See pump manual.

 

 

 

 

Low stall pressure

Turn pressure knob fully clockwise. Make sure

 

 

pressure control knob is properly installed to

 

 

allow full clockwise position. If problem per-

 

 

sists, replace pressure transducer.

 

 

 

 

Piston packings are worn or dam-

Replace packings; see pump manual.

 

aged

 

 

 

 

 

O-ring in pump is worn or damaged

Replace o-ring; see pump manual.

 

 

 

 

Intake valve ball is packed with mate-

Clean intake valve; see pump manual.

 

rial

 

 

 

 

 

Pressure setting is too low

Increase pressure; see pump manual.

 

 

 

 

Large pressure drop in hose with

Use larger diameter hose and/or reduce overall

 

heavy materials

length of hose.

 

 

 

 

Check to see if Amp switch (10/16 or

Switch to 16A or 20A setting. Change to circuit

 

15/20) is on low setting. Make sure

that provides 16A or 20A. Change to less

 

circuit is able to provide high setting.

loaded circuit.

 

 

 

Motor runs but pump does

Displacement pump pin damaged or

Replace pump pin if missing. Be sure retainer

not stroke

missing; see pump manual.

spring is fully in groove all around connecting

 

 

rod; see pump manual.

 

 

 

 

Connecting rod assembly damaged;

Replace connecting rod assembly; see pump

 

see pump manual.

manual.

 

 

 

 

Gears or drive housing damaged.

Inspect drive housing assembly and gears for

 

 

damage and replace if necessary; see pump

 

 

manual.

 

 

 

Excessive paint leakage

Throat packing nut is loose

Remove throat packing nut spacer. Tighten

into throat packing nut

 

throat packing nut just enough to stop leakage.

 

 

 

 

Throat packings are worn or dam-

Replace packings; see pump manual.

 

aged

 

 

 

 

 

Displacement rod is worn or dam-

Replace rod; see pump manual.

 

aged

 

 

 

 

Fluid is spitting from gun

Air in pump or hose

Check and tighten all fluid connections. Cycle

 

 

pump as slowly as possible during priming.

 

 

 

 

Tip is partially clogged

Clear tip; see Operation manual.

 

 

 

 

Fluid supply is low or empty

Refill fluid supply. Prime pump; see pump man-

 

 

ual. Check fluid supply often to prevent running

 

 

pump dry.

 

 

 

332916C

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Graco Mark VII, Mark IV, Mark X, 795, 695, 1095, 1595 important safety instructions Troubleshooting

1095, 695, 1595, Mark IV, Mark VII specifications

The Graco Mark series is a renowned line of airless paint sprayers designed for professional contractors and serious DIY enthusiasts. Each model in this series brings its own unique features and technologies, catering to a range of applications and user preferences.

The Graco Mark VII is known for its high efficiency and durability. It features a powerful motor that allows for consistent pressure and delivery of a variety of coatings. This model is equipped with a proven piston pump technology, providing a smooth and reliable spray pattern. Its compact design makes it easy to transport, while enhanced filtration systems ensure a clean finish by minimizing clogs and maintaining a steady flow of paint.

Moving on to the Graco Mark IV, this model offers versatility for both small and medium-sized projects. The Mark IV’s lightweight design, combined with an adjustable pressure control, allows users to fine-tune their spray for different materials, from heavy latex paints to stains. The inclusion of 2-finger trigger control and ergonomic handle enhances user comfort during extended use. Additionally, the Mark IV comes with a range of tip sizes, accommodating various application needs.

The Graco Mark V takes performance a notch higher. It is equipped with advanced technology for increased efficiency and reduced overspray. The innovative SmartControl system enables operators to set the pressure for a perfect finish, whether they are working on detailed trim work or expansive wall surfaces. Furthermore, the Mark V’s robust build and high-capacity intake system make it ideal for larger projects, ensuring consistent output throughout.

The Graco 1595 model is designed for heavy-duty applications and is particularly favored for its reliable performance in tough conditions. It boasts a heavy-duty pump that can handle high viscosity materials without compromising the finish. Along with an adjustable flow rate, the durable construction ensures longevity, making it a worthwhile investment for contractors who frequently tackle extensive jobs.

Lastly, the Graco Mark X is another high-performance sprayer that stands out for its advanced technology integration. With features such as automatic pressure adjustment and a digital display, users can achieve a precise spray application with ease. The Mark X also emphasizes user safety with built-in safeguards, including automatic shut-off systems. Its larger capacity makes it suitable for commercial-grade projects, ensuring effective coverage and efficiency.

In summary, the Graco Mark series, including the Mark VII, Mark IV, Mark V, 1595, and Mark X, offers a range of options with varied features and capabilities. Whether for small DIY tasks or large-scale commercial jobs, there is a model to meet every need, ensuring professional-quality results and user satisfaction.