Graco Inc 308-522, 800-345, 4040 manual Troubleshooting Chart

Models: 4040 800-345 308-522

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TROUBLESHOOTING CHART

TROUBLESHOOTING CHART

WARNING

To reducethe risk of seriousbodily injury, includingfluid injection, splashingin the eyes or on the skin, or injury from moving parts, always fallow the Pressure Relief ProcedureWarning before proceeding.

PROBLEM

 

CAUSE

I

SOWTION

DW pressure and/or

Wom or wrong sizetip.

Replace withtip of proper size.

ump runs rough

Inlet filter clogged.

Clean. Check more frequently.

 

 

 

 

Wom packings, abrasivesin water or

Checlc filter. Replace packingsSee. PUMP SERVICE.

 

 

natural wear.

Check water flowrate to pump.

 

 

Inadequate water supply.

 

 

Coupling slippage.

Tighten or replace.

 

 

Fouledor dirty inlet or discharge valves.

Clean Inlet and discharge valve assemblies. Check

 

 

Even a small particle can cause the valvefilter.

 

 

 

lo stick.

 

 

 

 

Reslricted inlet.

Check gardenhose. maybe collapsed orkinked.

 

 

Worn inlet or discharge valves.

Replaceworn valves.

 

 

Leakina hiahm s u r e hose.

Reolace hlahm w r ehose.

rater leakage from

 

Install new packings.See PUMP SERVICE.

nder pump manifolc Wom packings.

 

 

rater in pump

 

Humid air condensing inside crankcase. Change oil as specifiedin MAINTENANCE.

 

 

Wom packings.

Install new packings.See PUMP SERVICE.

 

 

 

Install newoil seals. See PUMP SERVICE. Oil seals leaking.

eqequent' or

of

Scored, damaged or worn plungers. Install new plungers.

See PUMP SERVICE.

emature failure

Abrasive material in the fluid being pumped. Install proper

filtration on pump inlet plumbing.

18 packings

 

 

 

Inlet water temperaturetoo high.

Check water temperature; maynot exceed 160°F.

 

 

Overpressurizing pump.

Do not modify any factory-set adjustmentsSee.

 

 

 

EQUIPMENT MISUSEHAZARD.

 

 

Excessivepressuredue to partiallypluggedorreplace

tip. See InstallingandChangingSpra)

 

 

or damaged tip.

 

 

 

 

Pump runningtoo long without spraying.

Never run pump more than10 minutes without spraying

 

 

Running pump dry.

Do notrun pump without water.

 

 

 

 

lrong surging at

theForeign particlesin the inlet or discharge

Clean or replace valvesSee. PUMP SERVICE.

let and low pressurt

valve or wom inlet and/or discharge valves.

 

1the discharoe side

 

 

 

nit will nd start

Unit not pluggedin.

 

Electrical service off/GFCI activated.

 

mermai overload has tripped.

Check power cord.

Check fuse/circuit breaker. Check for proper grounding.

Press stop button onthe motor starter.

308-522 9

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Graco Inc 308-522, 800-345, 4040 manual Troubleshooting Chart