TROUBLESHOOTING CHART.

~A~~~~~

To reduce the risk of serious bodily injury, including fluid injection,splashing in theeyes or on theskin, or injury from movingparts, always follow thePressure Relief Procedure Warning pageon 7before proceeding.

PROBLEM

Low Pressure

CAUSE

SOLUTION

Worn noale.

Replace with noaleof propersize.

Coupling slippage.

Tighten orreplace.

Air leak in inlet plumbing.

Disassemble, reseal, replace bad parts,

Inlet filter clogged.

and reassemble.

Clean. Use adequate size. Checkmore

 

frequently.

Worn packing. Abrasivesin

Install proper filter.Check flow available to

pumped fluid or severe cavita-

pump. Replace packings.

tion. Inadequate water supply.

Clean inlet and discharge valve assemblies.

Fouled ordirty inlet or dis-

charge valves.

 

Worn inlet or discharge valves.

Replace worn valves, valve seats and/or

Leaky discharge hose.

discharge hose.

Pressure adjustment set down. Turn adjustment knobin to increase pressure.

Pump runs exiremely rough, pressurelow.

Water leakage from under the manifold.

Water in pump crankcase.

Frequent or premature failure of the packing.

Strong surging atthe inlet and low pressure on the discharge side.

Unit will not start.

Chemical injection system doesn't work.

Restricted inlet or air entering the inlet plumbing. Inlet restrictions and/orair eaks. Stuckinlet or discharge ilalve.

Leaking high pressure seals. nadeouate water'suoolv.

aorn packings.

Norn packings. 3il seal leaking.

May be caused byhumid air :ondensing into water inside he crankcase.

scored, damaged, orworn hngers.

Urasive material in the water )eing pumped.

nlet water temperature too ligh.

Iver pressurizing pump.

ixcessive pressure dueto lartially pluggedor damagedtip

'ump running too long vithout spraying or cleaning. iunning pump dry.

breign particles in the inlet or ,ischarge valve, orworn inlet nd/or discharge valves.

hit not plugged in. 'lectric motor overheated

lectric serviceoff. :hemica1injector clogged.

>djustablenoale completely Iosed.

3w chemical level.

Proper size inlet plumbing; checkfor air tight seal.

Clean out foreign material, replaceworn valves.

Replace seals.

Check flow available to oumo.

Replace packings

Replace packings. Replace oil seals.

Change oil at 3 month or 500 hour intervals.

Xeplace plungers.

nstall proper inletfilter.

:heck inlet water temperature;be iure not to exceed 16OoF.

Jo not modify any factory-set tdjustments.

:lean or replace tip.

Uever run pump morethan 10 ninutes without spraying or cleaning. 10 not run pump without water.

leplace or cleanvalves.

:heck power cord.

.et motor cool andpush reset bunon In motor.

:heck fuse/circuit breaker panel.

)isassemble chemical valveand clean. :heck and clean chemical hose andfilter. 'urn controlring on noale clockwise

1 cause dropin pressure: :heck level of chemical.

8802-777

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Page 7 Page 9
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Image 8
Graco Inc 800-233, 802-777 manual ~A~~~~~, Troubleshooting Chart
Page 7 Page 9

802-777, 800-233 specifications

Graco Inc, a leading manufacturer in fluid handling systems, offers a diverse range of products suitable for various industries. Among their extensive lineup, the Graco Inc 802-777 and 800-233 stand out for their advanced features and innovative technologies.

The Graco 802-777 is renowned for its electric airless paint sprayer, designed to streamline the painting process for professionals. Its compact size allows for easy maneuverability, making it ideal for both interior and exterior applications. A significant feature of the 802-777 is its ability to deliver consistent pressure, ensuring a smooth and uniform spray pattern, which is paramount for high-quality finishes. The unit is equipped with a ProConnect pump replacement system, allowing users to swap out pumps quickly without the need for additional tools, minimizing downtime on the job.

On the other hand, the Graco 800-233 model offers a different application focus. It's specifically engineered for material transfer and is suitable for coatings and sealants. This model is notable for its robust construction, ensuring durability even under demanding conditions. With its advanced diaphragm technology, the 800-233 offers reliable performance by effectively managing the transfer of various materials, reducing the risk of clogging and maintenance issues. The adjustable pressure settings on this machine allow operators to customize the output to match specific job requirements, enhancing versatility.

Both models incorporate Graco's patented technologies, such as EasyGlide technology in the 802-777, which aids in reducing the friction and improving efficiency during operation. Furthermore, both machines are user-friendly, with intuitive controls that enable operators to quickly learn how to use the tools effectively.

In terms of characteristics, both the Graco 802-777 and the 800-233 are lightweight and portable while still being powerful enough to handle a wide range of applications. Their design emphasizes ease of maintenance, allowing users to keep the equipment in peak condition with minimal effort.

Overall, Graco Inc continues to lead the industry with innovative solutions like the 802-777 and 800-233, ensuring that users can achieve professional results with efficiency and reliability across various applications. Whether it's painting or material transfer, these machines reflect Graco's commitment to quality and performance in fluid handling technology.
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