Graco Inc 800-909, 740, 800-906, 800-907, 800-908, 735 Troubleshooting Chart, Problem Cause Solution

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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.

PROBLEM

CAUSE

SOLUTION

Low pressure and/or

Worn or wrong size tip.

Replace with tip of proper size.

pump runs rough

Inlet filter clogged.

Clean. Check more frequently.

 

 

Worn packings, abrasives in water or

Check filter. Replace packings. See PUMP SERVICE.

 

natural wear.

 

 

Inadequate water supply.

Check water flow rate to pump. Unit must have a

 

 

minimum 55 gallon float valve controlled water holding

 

 

tank.

 

Belt slippage.

Tighten or replace.

 

Fouled or dirty inlet or discharge valves.

Clean inlet and discharge valve assemblies. Check

 

Even a small particle can cause the valve

filter.

 

to stick.

 

 

Restricted inlet.

Check garden hose, may be collapsed or kinked.

 

Worn inlet or discharge valves.

Replace worn valves.

 

Leaking high pressure hose.

Replace high pressure hose.

Water leakage from

Worn packings.

Install new packings. See PUMP SERVICE.

under pump manifold

 

 

Water in pump

Humid air condensing inside crankcase.

Change oil as specified in MAINTENANCE.

 

Worn packings.

Install new packings. See PUMP SERVICE.

 

Oil seals leaking.

Install new oil seals. See PUMP SERVICE.

 

 

 

Frequent or

Scored, damaged or worn plungers.

Install new plungers. See PUMP SERVICE.

premature failure of

Abrasive material in the fluid being pumped.

Install proper filtration on pump inlet plumbing.

the packings

Inlet water temperature too high.

Check water temperature; may not exceed 160_F.

 

 

Overpressurizing pump.

Do not modify any factory–set adjustments. See

 

 

EQUIPMENT MISUSE HAZARD.

 

Excessive pressure due to partially plugged

Clean or replace tip. See Installing and Changing Spray

 

or damaged tip.

Tips.

 

Pump running too long without spraying.

Never run pump more than 10 minutes without

 

 

spraying.

 

Running pump dry.

Do not run pump without water.

Strong surging at the

Foreign particles in the inlet or discharge

Clean or replace valves. See PUMP SERVICE.

inlet and low pressure

valve or worn inlet and/or discharge

 

on the discharge side

valves.

 

Unit will not start

Unit not plugged in.

Check power cord.

 

Electrical service off/GFCI activated.

Check fuse/circuit breaker. Check for proper grounding.

 

Thermal overload has tripped.

Press reset button on motor for 1 phase units. Press

 

 

stop button on the motor starter for 3 phase units.

 

 

 

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Contents Rev a HYDRA-CLEAN735, 740, 1035 Pressure WashersPressure Relief Procedure General SafetySpray Gun Safety Devices Medical TreatmentGrounding Instructions Ground Fault Circuit Interrupter ProtectionEquipment Misuse Hazard System PressurePressure Relief Procedure before checking or Hose SafetyMoving Parts Hazard TermsSet Up InstallationCheck for Shipping Damage Connect to Water SupplyStartup Trigger Safety Latch Installing and Changing Spray TipsFollow the Pressure Relief Procedure Pressure Relief Procedure MaintenanceSHUTDOWN, Flushing and Storage Interval What to doProblem Cause Solution Troubleshooting ChartValves Pump ServicePumping Section Servicing the PlungersServicing the V-Packings Parts Drawing Wiring Diagram 230 Volt, 3 Phase Parts ListWiring Diagram 460 Volt, 3 Phase Part Description QTYParts Drawing Parts List Pump Assembly, 35 GPM Pump Assembly, 40 GPM 803-664 Kit Repair Kit Qty Description Incl 803-660803-665 803-667800-392 Accessories800-398 800-042Model Technical DataGraco Warranty Important Phone NumbersGraco INC. P.O. BOX 1441 MINNEAPOLIS, MN

1040, 1035, 735, 308-534, 800-908 specifications

Graco Inc is a renowned company specializing in fluid handling systems and equipment. Among their extensive product line, the model numbers 800-908, 308-534, 1040, 800-906, and 800-909 stand out, reflecting the company's commitment to quality and innovation in fluid management technologies.

The Graco 800-908 is a versatile air-operated diaphragm pump designed for transferring fluids and handling higher viscosity materials. One of its main features includes a corrosion-resistant construction that allows it to handle a variety of liquids, including corrosive and abrasive materials. This pump is equipped with a robust motor that ensures reliable performance in various industrial applications, making it an excellent choice for contractors and manufacturers alike.

The model 308-534 is known for its efficiency and compact design. Designed for use in low-pressure applications, it is suitable for transferring a range of non-viscous fluids. The unique features of this model include a lightweight design and easy installation, which are especially beneficial in tight spaces. Its maintenance-free operation further enhances its appeal for users looking for reliability and cost-effectiveness.

The Graco 1040 is a portable electric pump specifically designed for transferring lightweight materials, such as paints and coatings. This model features an adjustable flow rate, allowing users to control the output based on their specific needs. Its ergonomic design minimizes user fatigue, and the inclusion of built-in safety features ensures a secure operation, making it ideal for both commercial and residential applications.

The 800-906 model is a versatile transfer pump that excels in high-flow applications. Its dual-stage design allows for superior performance when dealing with thicker fluids, ensuring that users can quickly and efficiently transfer materials. This model is engineered for durability, featuring heavy-duty construction that withstands the rigors of industrial environments.

Lastly, the Graco 800-909 stands out as a powerful solution for high-volume fluid transfer tasks. It is designed for use in industries requiring rapid and reliable material movement, such as automotive and manufacturing. This pump is equipped with advanced technology that optimizes energy consumption while enhancing flow rates, thus providing an environmentally friendly option that does not compromise on performance.

In summary, Graco Inc's models 800-908, 308-534, 1040, 800-906, and 800-909 each exhibit unique features catering to diverse fluid handling needs, showcasing the company's dedication to innovation, efficiency, and reliability in fluid management solutions.
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