Graco Inc 311797J important safety instructions Maintenance, Pressure Relief Procedure

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Maintenance

Maintenance

Pressure Relief Procedure

The system pressure must be manually relieved to prevent the system from starting or spraying accidentally. Fluid under high pressure can be injected through the skin and cause serious injury. To reduce the risk of an injury from injection, splashing fluid, or moving parts, follow the Pressure Relief Procedure whenever you:

are instructed to relieve the pressure,

stop spraying,

check or service any of the system equipment,

or install or clean the spray tip.

1Lock gun trigger safety.

2Turn engine ON/OFF switch to OFF.

3Move pump valve to OFF (down) and turn pressure control knob fully counter clockwise.

4Unlock trigger safety. Hold metal part of gun firmly to side of grounded metal pail, and trigger gun to relieve pressure.

5Lock gun trigger safety.

6Open pressure drain valve. Leave valve open until ready to spray again.

DAILY: Check and fill the gas tank.

DAILY: Check that displacement pump is tight.

DAILY: Check level of Throat Seal Liquid (TSL) in dis- placement pump packing nut. Fill nut, if necessary. Keep TSL in nut to help prevent fluid buildup on piston rod and premature wear of packings and pump corrosion.

AFTER THE FIRST 20 HOURS OF OPERATION:

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

WEEKLY: Remove engine air filter cover and clean ele- ment. Replace element, if necessary. If operating in an unusually dusty environment: check filter daily and replace, if necessary.

Replacement elements can be purchased from your local HONDA dealer.

WEEKLY/DAILY: Remove any debris or media from hydraulic rod.

AFTER EACH 100 HOURS OF OPERATION:

Change engine oil. Reference Honda Engines Owner's Manual for correct oil viscosity.

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. Now clear tip or hose.

NOTICE

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

DAILY: Check engine oil level and fill as necessary.

DAILY: Check hydraulic oil level and fill as necessary.

SEMI-ANNUALLY:

Check belt wear, page 10; replace if necessary.

YEARLY OR 2000 HOURS:

Replace hydraulic oil and filter with Graco hydraulic oil 169236 (5 gallon/20 liter) or 207428 (1 gallon/3.8 liter) and filter 116909.

Replace belt.

SPARK PLUG: Use only BPR6ES (NGK) or W20EPR-U (NIPPONDENSO) plug. Gap plug to 0.028 to 0.031 in. (0.7 to 0.8 mm). Use spark plug wrench when installing and removing plug.

DAILY: Check hose for wear and damage.

DAILY: Check gun safety for proper operation.

DAILY: Check pressure drain valve for proper operation.

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Contents GH 130, GH GH 230, GH Hydraulic Sprayers Electric Motor Kit Options ModelsFire and Explosion Hazard Moving Parts Hazard Item No Component Component IdentificationGeneral Repair Information Grounding SAE O-Ring InstallationPressure Relief Procedure MaintenanceProblem Cause Solution Troubleshooting311797J Hydraulic Pump InstallationRemoval 227 Fan Belt Engine Hydraulic Motor Rebuild Removal Installation266 265 Test hole 288 271 Hydraulic Oil/Filter Change Figures Displacement PumpSlide coupler cover 193 up to fully expose rod couplers Displacement Pump ProConnectSupport pump with your hand before opening t-handle Install pin 311797J All Sprayers PartsPart Description Qty Parts List All SprayersParts Drawing Engines WASHER, GH300 Parts Drawing All Sprayers Plug Parts Drawing All Sprayers GH200/230/300GH130 Ref. Part Description Qty 267 268 269 266 265 Ref. Part Description Parts ListGH 230 & 300 Sprayers with Spray Gun and Hoses GH 130 & 200 Sprayers with Spray Gun and HosesSound Levels Dimensions311797J 311797J For Graco Canada Customers Graco Standard Warranty