Graco Inc 1235, 800-268, 800-093, 308-518, 826 manual Troubleshooting Chart, Problem, Cause, Solution

Page 9

TROUBLESHOOTING CHART

WARNING

To reduce the risk of serious bodily injury, including fluid injection, splashing in the eyes or on the skin, or injury from moving parts, always follow the Pressure Relief Procedure Warning before proceeding.

I

8

Problem

-0w pressure and/or ,ump runs rough

Nater leakage from under pump manifold

Nater in pump

?equent or Iremature failure of he packings

Strong surging at the nlet and low pressure on the discharge side

Jnit will not start

Cause

Worn or wrong size tip,

Inlet filter clogged.

Worn packings, abrasives in water or natural wear.

Inadequate water supply. Coupling slippage.

Fouled or dirty inlet or discharge valves. Even a small particle can cause the valve to stick.

Restricted inlet.

Worn inlet or discharge valves.

Leaking high pressure hose.

Worn packings.

Humid air condensing inside crankcase. Worn packings.

Oil seals leaking.

Scored, damaged or worn plungers. Abrasive material in the fluid being pumped.

Inlet water temperature too high.

Overpressurizing pump.

Excessive pressure due to partially plugged or damaged tip.

Pump funning too long without spraying.

Running pump dry.

Foreign particles in the inlet or discharge valve or worn inlet and/or discharge valves.

Unit not plugged in.

Electrical service off/GFCI activated.

Thermal overload has tripped.

Solution

Replace with tip of proper size.

Clean. Check more frequently.

Check filter. Replace packings. See PUMP SERVICE.

Check water flow rate to pump.

Tighten or replace.

Clean inlet and discharge valve assemblies. Check filter.

Check garden hose, may be collapsed or kinked. Replace worn valves.

Replace high pressure hose.

Install new packings. See PUMP SERVICE.

Change oil as specified in MAINTENANCE. Install new packings. See PUMP SERVICE. Install new oil seals. See PUMP SERVICE.

Install new plungers. See PUMP SERVICE. Install proper filtration on pump inlet plumbing.

Check water temperature; may not exceed 160°F

Do not modify any factory-set adjustments. See

EQUIPMENT MISUSE HAZARD.

Clean or replace tip. See Installing and Changing Spray Tips.

Never run pump more than 10 minutes without spraying

Do not run pump without water.

Clean or replace valves. See PUMP SERVICE.

Check power cord.

Check fuse/circuit breaker. Check for proper grounding.

Press reset button on motor.

Chemical injector will Chemical injector clogged. lot siphon

Adjustable nozzle completely closed (826).

Low chemical level.

Wrong tip (1235).

Disassemble chemical valve and clean. Check and clean chemical hose and filter.

Turn control ring on nozzle clockwise to cause drop in pressure.

Check level of chemical Install chemical tip.

308-518 9

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Contents HYDRA-CLEAN Model 800-093, Series BModel 800-268, Series a Pressure Relief Procedure General SafetySpray Gun Safety Devices Grounding InstructionsGround Fault Circuit Interrupter Protection Extension CordsEquipment Misuse Hazard Page Set Up Check for Shipping DamageConnect to Water Supply Chemical Injector Installing and Changing Spray Tips Trigger Safety LatchFollow the Pressure Relief Procedure Trigger Safety ’ Latch Shown \ Engaged \ DisengagedMaintenance SHUTDOWN, Flushing and StorageInterval What to do Problem Troubleshooting ChartSolution CauseValves Pumping SectionServicing Plungers Servicing the V-Packings WHT-I Hydra-Clean@ 826 Pressure Washer’ft Part DescriptionParts Drawing Hydra-Clean@ 1235 Pressure WasherNO. NO. DESCRIPTIONQlY REF PartPump and Motor Assembly Parts ListPart Description QTY Pump Assembly, 800 psi Qty QTYPump Assembly, 1200 psi Description Incl 1200 psiANTI-FREEZE Flush KIT AccessoriesUpstream Chemical Injector KIT Inlet Pressure RegulatorPage Graco Warranty Important Phone NumbersGraco INC. P.O. BOX 1441 MINNEAPOLIS, MN

308-518, 826, 800-093, 1235, 800-268 specifications

Graco Inc is a leading manufacturer of fluid handling systems and products, renowned for its innovative technologies and a wide range of applications across industries. Headquartered in Minneapolis, Minnesota, Graco has established a reputation for producing high-quality equipment designed to handle, apply, and manage fluids with precision and efficiency.

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