Graco Inc 253472, 311283D, 249617, 253471, 249318 User Manual

Repair

™

Korean patent: 10-0647761

4000 psi (27.6 MPa, 275.8 bar) Maximum Working Pressure

Model: 249318, 249617, 253471, 253472

833 Sprayers

- Use with Architectural Coatings, Paints, Roof Coatings and Below Grade Coatings -

Important Safety Instructions. Read all warnings and instructions in this manual. Save these instructions.

311283D

ENG

Related Manuals

311279

311484

311485

311254

ti7107b

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441

Warning

The following are general warning related to the safe setup, use, grounding, maintenance and repair of this equipment. Additional, more specific warnings may be found throughout the body of this manual where applicable. Symbols appearing in the body of the manual refer to these general warnings. When these symbols appear throughout the manual, refer back to these pages for a description of the specific hazard.

WARNING

FIRE AND EXPLOSION HAZARD

Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent fire and explosion:

• Use equipment only in well ventilated area.

• Do not fill fuel tank while engine is running or hot; shut off engine and let it cool. Fuel is flammable and can ignite or explode if spilled on hot surface.

• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop cloths (potential static arc).

• Keep work area free of debris, including solvent, rags and gasoline.

• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes are present.

• Ground all equipment in the work area. See Grounding instructions.

• Use only grounded hoses.

• Hold gun firmly to side of grounded pail when triggering into pail.

• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment until you identify and correct the problem.

• Keep a working fire extinguisher in the work area.

SKIN INJECTION HAZARD

High-pressure fluid from gun, hose leaks, or ruptured components will pierce skin. This may look like just a cut, but it is a serious injury that can result in amputation. Get immediate surgical treatment.

• Do not point gun at anyone or at any part of the body.

• Do not put your hand over the spray tip.

• Do not stop or deflect leaks with your hand, body, glove, or rag.

• Do not spray without tip guard and trigger guard installed.

• Engage trigger lock when not spraying.

• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning, checking, or servicing equipment.

PRESSURIZED EQUIPMENT HAZARD

Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the eyes or on skin and cause serious injury.

• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning, checking, or servicing equipment.

• Tighten all fluid connections before operating the equipment.

• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.

RECOIL HAZARD

Brace yourself; gun may recoil when triggered and cause you to fall, which could cause serious injury.

2 311283D

Warning

WARNING

EQUIPMENT MISUSE HAZARD

Misuse can cause death or serious injury.

• Do not operate the unit when fatigued or under the influence of drugs or alcohol.

• Do not exceed the maximum working pressure or temperature rating of the lowest rated system

component. See Technical Data in all equipment manuals.

• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all

equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information about your material, request MSDS forms from distributor or retailer.

• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine Manufacturer’s replacement parts only.

• Do not alter or modify equipment.

• Use equipment only for its intended purpose. Call your distributor for information.

• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.

• Do not kink or over bend hoses or use hoses to pull equipment.

• Keep children and animals away from work area.

• Comply with all applicable safety regulations.

MOVING PARTS HAZARD

Moving parts can pinch or amputate fingers and other body parts.

• Keep clear of moving parts.

• Do not operate equipment with protective guards or covers removed.

• Pressurized equipment can start without warning. Before checking, moving, or servicing equipment, follow the Pressure Relief Procedure in this manual. Disconnect power or air supply.

PRESSURIZED ALUMINUM PARTS HAZARD

Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids containing such solvents in pressurized aluminum equipment. Such use can cause serious chemical reaction and equipment rupture, and result in death, serious injury, and property damage.

SUCTION HAZARD

Never place hands near the pump fluid inlet when pump is operating or pressurized. Powerful suction could cause serious injury.

CARBON MONOXIDE HAZARD

Exhaust contains poisonous carbon monoxide, which is colorless and odorless. Breathing carbon monoxide can cause death. Do not operate in an enclosed area.

TOXIC FLUID OR FUMES HAZARD

Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or swallowed.

• Read MSDS’s to know the specific hazards of the fluids you are using.

• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.

BURN HAZARD

Equipment surfaces and fluid that’s heated can become very hot during operation. To avoid severe burns, do not touch hot fluid or equipment. Wait until equipment/fluid has cooled completely.

PERSONAL PROTECTIVE EQUIPMENT

You must wear appropriate protective equipment when operating, servicing, or when in the operating area of the equipment to help protect you from serious injury, including eye injury, inhalation of toxic fumes, burns, and hearing loss. This equipment includes but is not limited to:

• Protective eyewear

• Clothing and respirator as recommended by the fluid and solvent manufacturer

•Gloves

• Hearing protection

311283D 3

Component Identification

Ref Description

1 Hydraulic pump valve 2 Pressure control 3 Lock ring 4 Drain valve 5 Engine ON/OFF switch 6 Engine controls 7 Trigger lock 8 Serial number ID label 9 Lift locations

ti7107b

ti7133

ti7133b

10 Suction holder 11 Hydraulic oil fill

4 311283D

Operation

Pressure Relief Procedure

System pressure must be manually relieved to prevent it from starting or spraying accidentally. Fluid under high pressure can be injected into the skin and cause serious injury. To reduce risk of injury from injection, follow this procedure whenever you are instructed to relieve pressure, stop spraying, service equipment or install or clean spray tip. Read warnings, page 4.

1 Set pump valve OFF. Turn engine OFF.

TIA

2 Turn pressure to lowest setting. Trigger gun into pail to

relieve pressure.

General Repair Information

• Hydraulic system and engine may become very hot during operation and could burn skin if touched. Flammable materials spilled on hot, bare motor could cause fire or explosion. Have belt guard in place during operation to reduce risk of pinching or loss of fingers.

• Install belt guard before operation of sprayer and replace if damaged. Belt guard reduces risk of pinching and loss of fingers.

To reduce risk of serious injury,:

• Keep all screws, nuts, washers, etc. removed during repair procedures. These parts usually are not provided with replacement kits.

• Test repairs after problems are corrected.

• If sprayer does not operate properly, review repair procedure to verify you did it correctly. See Trouble- shooting, page 7.

• Do not touch moving parts with fingers or tools while testing repair.

3 Open prime valve (vertical).

If you suspect that the spray tip or hose is completely clogged, or that pressure has not been fully relieved after following the steps above, VERY SLOWLY, loosen tip guard retaining nut or hose end coupling to relieve pressure gradually, then loosen completely. Then clean tip and hose.

311283D 5

Grounding

Ground sprayer with grounding clamp to earth ground for safe sprayer operation.

Maintenance

Spark Plug:

• Use BPR6ES (NGK) or W20EPR-U (NIPPONDENSO) plug, only.

For detailed engine maintenance and specifications, refer to separate Honda Engines Owner’s Manual, supplied.

Frequency Procedure

Daily Check engine oil level and fill as necessary. Daily Check hydraulic oil level and fill as necessary. Daily Check hose for wear and damage. Daily Check gun safety for proper operation. Daily Check pressure drain valve for proper operation. Daily Check and fill gas tank. Daily Check that displacement pump is tight. Daily Check level of TSL in displacement pump packing nut. Fill nut, if neces-

sary. Keep TSL in nut to help prevent fluid build up on piston rod and premature wear of packings and pump corrosion.

After first 20 hours of operation

Weekly Remove engine air filter cover and clean element. Replace element, if

Drain engine oil and refill with clean oil. Reference Honda Engines Owner’s Manual for correct oil viscosity.

necessary. If operating in an unusually dusty environment; check filter daily and replace, if necessary.

• Gap plug to 0.028 to 0.031 in. (0.7 to 0.8 mm).

• Use spark plug wrench when installing and removing plug.

Replacement elements can be purchased from your local Honda dealer. Weekly/Daily Remove and debris or media from hydraulic rod. After each 100

hours of operation Semi-annually Check belt wear; replace if necessary. Yearly or 2000

hours

6 311283D

Change engine oil. Reference Honda Engines Owner’s Manual for cor-

rect oil viscosity.

Replace hydraulic oil and filter element with Graco ISO 46 Hydraulic Oil

169236; 5 gallon/20 liter or 207428; 1 gallon/3.8 liter) and filter element

287871.

Troubleshooting

PROBLEM CAUSE SOLUTION

Gas engine pulls hard (won't start) Hydraulic pressure is too high Turn hydraulic pressure knob coun-

terclockwise to lowest setting Gas engine does not start Switch OFF, low oil, no gasoline Consult engine manual, supplied Gas engine doesn't work properly Faulty engine Consult engine manual, supplied Gas engine operates, but displace-

ment pump doesn't operate

Displacement pump operates, but output is low on upstroke

Displacement pump operates but output is low on downstroke and/or on both strokes

Paint leaks and runs over side of wetcup

Excessive leakage around hydraulic motor piston rod wiper

Fluid delivery is low Pressure setting too low Increase pressure

Pump valve is OFF Set pump valve ON Pressure setting too low Increase pressure Displacement pump outlet filter (if

used) is dirty or clogged Tip or tip filter (if used) is clogged Remove tip and/or filter and clean Hydraulic fluid too low Shut off sprayer. Add fluid*. Belt worn, broken or off Replace belt. Hydraulic pump worn or damaged Bring sprayer to Graco distributor for

Dried paint seized paint pump rod Service pump. See manual 311485 Hydraulic motor not shifting Set pump valve OFF. Turn pressure

Piston ball check not seating properly Service piston ball check. See man-

Piston packings worn or damaged Replace packings. See manual

Piston packings worn or damaged Tighten packing nut or replace pack-

Intake valve ball check not seating properly

Suction tube air leak Loose wet-cup Tighten wet-cup enough to stop leak-

Throat packings worn or damaged Replace packings. See manual

Piston rod seal worn or damaged Replace these parts.

Displacement pump outlet filter (if used) is dirty or clogged

Intake line to pump inlet is not tight Tighten Hydraulic motor is worn or damaged Bring sprayer to Graco distributor for

Large pressure drop in fluid hose Use larger diameter or shorter hose

Clean the filter

repair

down. Turn engine OFF. Pry rod up or

down until hydraulic motor shifts.

ual 311485

311485

ings. See manual 311485

Service intake valve ball check. See

manual 311485

age

311485

Clean filter

repair

311283D 7

Troubleshooting

PROBLEM CAUSE SOLUTION

The sprayer overheats Paint buildup on hydraulic compo-

Clean

nents Oil level is low Fill with oil.

Spitting from gun Air in fluid pump or hose Check for loose connections on

siphon assembly, tighten, then rep-

rime pump. Loose intake suction Tighten. Fluid supply is low or empty Refill supply container.

Excessive hydraulic pump noise Low hydraulic fluid level Turn sprayer OFF. Add fluid*. *Check hydraulic fluid level often. Do not allow it to become too low. Use only Graco approved hydraulic fluid, page 6.

8 311283D

Displacement Pump Replacement

See manual 311485 for pump repair instructions.

Removal

1. Flush pump (36). Stop pump on down stroke if possible.

2. Relieve pressure, page 5.

3. Remove suction set (147) from pump (36).

5. Remove clip (121).

121

ti7789

6. Slide cover up (124).

4. Remove filter housing (110), page 15.

110

147

ti7119

124

ti7816

7. Separate coupling (125) and remove.

125

ti7814

311283D 9

Displacement Pump Replacement

8. Loosen jam nut (122) with a hammer. Unscrew pump (36) from power head.

122

ti7782

9. Remove pump (36).

3. Hand tighten jam nut (122). Then tighten securely 1/8 to 1/4 turn with hammer or torque to 330 ft-lb (447.4 N•m).

122

ti7817

4. Slide cover (124) up over pump rod. With engine in OFF position, pull recoil starter to move rod until it contacts pump rod.

5. Install coupling (125) around pump rod.

ti7804

Installation

1. Screw jam nut (122) to bottom of pump threads (36).

2. Slide cover (124) up over pump rod. Screw pump completely up into power head.

122

125

ti7771

6. Slide cover (124) over coupling (125).

124

ti7815

ti7779

10 311283D

125

Displacement Pump Replacement

7. Install clip pin (121) to secure. 8. Install filter housing (110), page 15.

110

121

125

ti7809

ti7772

9. Connect suction hose (147) to pump outlet (36).

147

311283D 11

+ 23 hidden pages