Operation GH ™ Series Big Rig Sprayers 332156B EN - Use with Architectural Coatings, Paints, Roof Coatings and Below Grade Coatings Model 16U277 16U278 16U279 16U280 16U285 16U281 Description GH1017es Bare GH2570es Bare GH733es Bare GH5040es Bare GH933es Bare GH933 Bare Maximum Working Pressure 1000 psi (6.9 MPa, 69 bar) 2500 psi (17.2 MPa, 172 bar) 4000 psi (27.6 MPa, 276 bar) 5000 psi (34.5 MPa, 345 bar) 7250 psi (50.0 MPa, 500 bar) 7250 psi (50.
Contents Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Component Identification . . . . . . . . . . . . . 5 Lift Instructions . . . . . . . . . . . . . . . . . . . . . 6 Pressure Relief Procedure . . . . . . . . . . . . 7 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Spraying . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Cleanup . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings Warnings The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.
Warnings WARNING WARNING MOVING PARTS HAZARD Moving parts can pinch, cut 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 and disconnect all power sources. SUCTION HAZARD Powerful suction could cause serious injury.
Component Identification Component Identification 6 7 8 1 9 2 ON START OFF 10 3 ON OF 11 4 ti20727a 5 1 Engine Controls 2 Engine ON/OFF Switch (Electric-Start Units) 3 Engine ON/OFF Switch (Pull-Start Units) 4 Lift Location 5 Suction Tube Holder 6 Pressure Control 7 Lock Ring 8 Serial Number ID Label 9 Hydraulic Pump Valve 12 12 10 Hydraulic Oil Fill 11 Pressure Bleed Valve, T handle 12 Trigger Lock 332156B 5
Lift Instructions Lift Instructions 3. Be sure straps/chains used for lifting are rated to support weight of sprayer: 500 lbs (227 kg). To avoid injury, always use designated Lift Locations when lifting the unit. When lifting the unit, only use ANSI approved slings and equipment rated for a minimum of 500 lb (227 kg). Always use ANSI approved equipment for securing the unit to transporting equipment. 4. Do not lift unit with only one strap secured across pump.
Pressure Relief Procedure Pressure Relief Procedure Grounding Follow the Pressure Relief Procedure whenever you see this symbol. Ground sprayer with grounding clamp to earth ground. This equipment stays pressurized until pressure is manually relieved. To help prevent serious injury from pressurized fluid, such as skin injection, splashing fluid and moving parts, follow the Pressure Relief Procedure when you stop spraying and before cleaning, checking, or servicing the equipment. 1. Set pump valve OFF.
Setup Setup 5. Fill throat packing nut with TSL to prevent premature packing wear. Do this each time you spray and store. Scale: Artist: J. Iverson Approximate Fill Level ti5240a 1. Connect appropriate Graco high-pressure hose to sprayer. Tighten securely. 6. Check engine oil level. Add SAE 10W-30 (summer) or 5W-20 (winter), if necessary. (cold) ti7112b ti5241a NOTE: Remove second gun port plug for multiple guns and repeat steps 1 - 4. 7. Fill fuel tank. 2.
Startup Startup 5. Start engine. a. Move fuel valve to open. 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. 1. Place suction tube and drain tube in grounded metal pail partially filled with flushing fluid. Attach ground wire to pail and to ground wire to earth ground. ti5248a b.
Startup 6. Set pump valve ON (hydraulic motor is now active). ti7108a 10. Hold gun against grounded metal flushing pail. Trigger gun and increase fluid pressure slowly until pump runs smoothly. ti7110c ti20730a 7. Increase pressure enough to start hydraulic motor stroking and allow fluid to circulate for 15 seconds; turn pressure down. 11. Inspect fittings for leaks. Do not stop leaks with your hand or a rag! If leaks occur, turn sprayer OFF immediately. Relieve pressure, page 7.
Startup SwitchTip and Guard Assembly Clearing Tip Clogs 1. Insert SwitchTip. Insert seat and OneSeal. 1. Release trigger, put trigger safety ON. Rotate SwitchTip. Take trigger safety OFF and trigger gun to clear the clog. ti5257ba NOTE: Before screwing tip and guard assembly on gun, perform Pressure Relief Procedure, page 7, and be sure gun trigger safety is ON. ti5402a 2. Screw assembly onto gun. Hand tighten. ti21142a 2.
Spraying Spraying 4. Adjust pressure to desired setting. Begin spraying. 1. Set pump valve ON. ti21062a ti7110c 5. Rotate Lock Ring clockwise to set pressure. ti7108a 2. Increase pressure enough to start hydraulic motor stroking and allow fluid to circulate for 15 seconds; turn pressure down. ti20968a ti7110c 3. Turn spray gun trigger safety OFF.
Cleanup Cleanup 6. Turn engine ON and start engine. 1. Perform Pressure Relief Procedure, page 7. 7. Set pump valve ON. Rotate handle clockwise to close prime valve. 2. Remove guard and SwitchTip. ti7108a ti7122b 3. GH933 units only: Unscrew bowl, remove filter. Assemble without filter. ti7129b ti21060a 8. Hold gun against paint pail. Take trigger safety OFF. Turn pressure control up until motor begins to drive pump. ti20969a 4. Clean filter, guard and SwitchTip in flushing fluid.
Cleanup 12. Raise siphon tube above flushing fluid and run sprayer for 15 to 30 seconds to drain fluid. 14. Rotate handle clockwise to close prime valve. Trigger gun into flushing pail to purge fluid from hose. ti7129b ti21060a ti20729a 13. Turn pump valve OFF. Turn engine OFF. ti20730a 15. Rotate handle counter-clockwise to open prime valve. ti7108a ON OFF START ti7120b ti5261a Caution: If flushing with water, do not leave water in sprayer.
Troubleshooting Troubleshooting PROBLEM CAUSE SOLUTION Gas engine pulls hard (will not start). Hydraulic pressure is too high. Turn hydraulic pressure knob counterclockwise to lowest setting. Gas engine does not start. Switch OFF, low oil, no gasoline, or dead battery. Consult engine manual, supplied. Replace battery if necessary. Gas engine doesn't work properly. Faulty engine. Consult engine manual, supplied. Gas engine operates, but displacement pump doesn't operate. Pump valve is OFF.
Troubleshooting PROBLEM Fluid delivery is low. The sprayer overheats Spitting from gun Excessive hydraulic pump noise CAUSE SOLUTION Pressure setting too low Increase pressure, page 4 Displacement pump outlet filter (if used) is dirty or clogged Clean filter Intake line to pump inlet is not tight Tighten intake line Hydraulic motor is worn or damaged Bring sprayer to Graco distributor for repair Large pressure drop in fluid hose. Use larger diameter or shorter hose.
Technical Data Technical Data GH733ES US Metric Sprayer Hydraulic Pressure 2750 psi 190 bar Hydraulic Reservoir Capacity 4.0 gallons 15.1 liters Honda Motor 13 HP 9.7 KW Maximum Delivery 4.0 gpm 15.1 lpm Maximum Pressure 4000 psi 276 bar Maximum Tip Size • 1 gun .065 in. 1.65 mm • 2 guns .046 in. 1.16 mm • 3 guns .037 in. 0.93 mm • 4 guns .032 in. 0.81 mm • 5 guns .029 in. 0.71 mm • 6 guns .026 in. 0.66 mm Fluid Inlet 1.25 in. npt(m) 3.2 cm npt(f) Fluid Outlet (with fitting as shipped) 0.75 in.
Technical Data GH5040ES US Metric Sprayer Hydraulic Pressure 2750 psi 190 bar Hydraulic Reservoir Capacity 4.0 gallons 15.1 liters Honda Motor 13 HP 9.7 KW Maximum Delivery 3.5 gpm 13.2 lpm Maximum Pressure 5000 psi 344.7 bar Maximum Tip Size • 1 gun .067 in. 1.70 mm • 2 guns .048 in. 1.22 mm • 3 guns .039 in. 0.99 mm • 4 guns .035 in. 0.89 mm • 5 guns .031 in. 0.79 mm • 6 guns .028 in. 0.71 mm Fluid Inlet 1.25 in. npt(m) 3.2 cm npt(f) Fluid Outlet (with fitting as shipped) 0.75 in. nps(f) swivel 1.
Technical Data GH1017ES US Metric Sprayer Hydraulic Pressure 2750 psi 190 bar Hydraulic Reservoir Capacity 4.0 gallons 15.1 liters Honda Motor 13 HP 9.7 KW Maximum Delivery 16.5 gpm 62.5 lpm Maximum Pressure 1000 psi 69 bar Maximum Tip Size • 1 gun n/a n/a • 2 guns n/a n/a • 3 guns n/a n/a • 4 guns n/a n/a • 5 guns n/a n/a • 6 guns n/a n/a Fluid Inlet 2 in. npt(f) 5 cm npt(f) Fluid Outlet (with fitting as shipped) 0.75 in. nps(f) swivel 1.9 cm npsm Fluid Outlet Pump 1.5 in. npt(f) 3.
Technical Data GH2570ES US Metric Sprayer Hydraulic Pressure 2750 psi 190 bar Hydraulic Reservoir Capacity 4.0 gallons 15.1 liters Honda Motor 13 HP 9.7 KW Maximum Delivery 7.0 gpm 26.5 lpm Maximum Pressure 2500 psi 172.3 bar Fluid Inlet 2 in. npt(f) 5 cm npt(f) Fluid Outlet (with fitting as shipped) 0.75 in. nps(f) swivel 1.9 cm npsm Fluid Outlet Pump 1.5 in. npt(m) 3.8 cm npt(m) Dimensions Weight 471 lb 214 kg Height 49 in. 124 cm Width 28 in. 71 cm Length 43 in.
Technical Data GH933ES, GH933 US Metric Sprayer Hydraulic Pressure 2750 psi 190 bar Hydraulic Reservoir Capacity 4.0 gallons 15.1 liters Honda Motor 13 HP 9.7 KW Maximum Delivery 2.5 gpm 9.5 lpm Maximum Pressure 7250 psi 500 bar Maximum Tip Size • 1 gun .065 in. 1.65 mm Fluid Inlet 1.25 in. npt(m) 3.2 cm npt(f) Fluid Outlet Pump 0.5 in. npt(f) 1.8 cm npt(f) Fluid Outlet (with fitting as shipped) 0.5 in. npt(m) 1.8 cm npt(m) Dimensions Weight 438 lb 199 kg Height 49 in. 124 cm Width 28 in.
Notes Notes 22 332156B
Notes Notes 332156B 23
Graco Standard Warranty Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.
