Troubleshooting

Troubleshooting

2.Check all possible problems and causes before dis- assembling pump.

Problem

Cause

Solution

 

 

 

 

 

 

Pump fails to operate.

Restricted line or inadequate air sup-

Clear; increase air supply. Ensure that all

 

ply; closed or clogged valves.

valves are open.

 

 

 

 

Obstructed fluid hose or gun/valve; fluid

Open, clear*; use a hose with a larger ID.

 

hose ID is too small.

 

 

 

 

 

Fluid dried on displacement rod.

Clean. Always stop pump at bottom of

 

 

stroke. Keep enclosed wet cup 1/3 filled

 

 

with a compatible solvent.

 

 

 

 

Dirty, worn, or damaged motor parts.

Clean or repair; see separate motor man-

 

 

ual.

 

 

 

 

Runaway occurred.

See runaway section of Supply Units Oper-

 

 

ation manual 313526.

 

 

 

Pump operates but output is

Restricted line or inadequate air sup-

Clear; increase air supply.

low on both strokes.

ply; closed or clogged valves.

Ensure all valves are open.

 

 

 

 

 

Increase air pressure to ram for better load-

 

 

ing.

 

 

 

 

Obstructed fluid hose or gun/valve; fluid

Open, clear*; use a hose with a larger ID.

 

hose ID is too small.

 

 

 

 

 

Bleed-type air valve is partially open.

Close bleed-type air valve.

 

Air is leaking into supply container.

Check ram plate seal.

 

 

 

 

Fluid is too heavy for pump priming.

Use drain/purge valve. Use a ram. See

 

 

Supply Units Operation manual 313526.

 

 

 

 

Held open or worn intake valve or

Clear valve; replace seals. See separate

 

seals.

Check-Mate Displacement Pump manual

 

 

312375.

 

 

 

 

Worn packings in displacement pump.

Replace packings. See separate

 

 

Check-Mate Displacement Pump manual

 

 

312375.

 

 

 

Pump operates, but output is

Fluid is too heavy for pump priming.

Use drain/purge valve. Use a ram. See

low on downstroke.

 

Supply Units Operation manual 313526.

 

 

 

 

Held open or worn intake valve or

Clear valve. Replace seals. See separate

 

seals.

Check-Mate Displacement Pump manual

 

 

312375.

 

 

 

Pump operates, but output is

Held open or worn intake valve or

Clear valve. Replace seals. See separate

low on upstroke.

seals.

Check-Mate Displacement Pump manual

 

 

312375.

 

 

 

16

312376L

Page 15 Page 17
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Graco P40RCM, P39LCS, P20LCM important safety instructions Troubleshooting, Problem Cause Solution
Page 15 Page 17

P40RCM, P39LCS, P20LCM specifications

Graco, a renowned brand in the world of fluid handling equipment, has developed a series of versatile and high-performance products tailored for various applications. Among these, the Graco P20LCM, P39LCS, and P40RCM stand out for their innovative features, technologies, and characteristics that enhance productivity and efficiency in professional environments.

The Graco P20LCM is a lightweight and portable paint sprayer designed for small to medium-sized projects. It features Graco’s exclusive ProConnect technology, which allows for quick and easy pump replacement, minimizing downtime. The P20LCM also incorporates a SmartControl system that provides consistent pressure and prevents overspray for a flawless finish. Its flexible suction tube allows for drawing paint directly from a bucket, while its compact design ensures ease of transport, making it ideal for contractors and DIY enthusiasts alike.

In contrast, the Graco P39LCS embodies a robust solution tailored for larger projects. This airless paint sprayer is engineered for high efficiency, capable of handling thicker coatings with ease. It boasts a powerful hydraulic system that maintains pressure, ensuring an even application over large surfaces. The P39LCS integrates the Grip and Guard with LED indicators, enhancing user experience and safety. Additionally, its durable construction and advanced filtration system help in prolonging the lifespan of the equipment, reducing maintenance requirements and downtime.

The Graco P40RCM is an advanced model that offers unrivaled versatility and control, making it a preferred choice for professional contractors. This sprayer features advanced electronic controls that enable users to adjust pressure settings on the fly, offering ultimate control over the application process. The P40RCM is compatible with a wide range of coatings, including paints, stains, and sealants, providing flexibility for diverse job needs. Its AutoPrime technology simplifies the priming process, allowing for faster setup and minimal manual intervention. Furthermore, rugged wheels and a durable frame enhance maneuverability and resilience on job sites.

Together, the P20LCM, P39LCS, and P40RCM encapsulate Graco’s commitment to quality and innovation. With user-friendly features, advanced technologies, and robust designs, these products are engineered to meet the demands of professionals and improve efficiency while delivering superior results in every application.
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