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Operation, Parts
GX21, GX19, and GX FF Cordless
Electric Airless Sprayers
For portable airless spraying of architectural paints and coatings. Not
approved for use in explosive atmospheres or hazardous (classified)
locations. For professional use only.
GX21 Cordless Models: 25T973, 25T967
FinishPro GX19 Models: 25U341, 25U855
GX FF Models: 25U466, 25U570
3000 psi (207 bar, 20.7 MPa) Maximum Working Pressure
Important Safety Instructions
Read all warnings and instructions in this manual and related manuals. Be familiar with
the controls and the proper usage of the equipment. Save these instructions.
Related Manuals
312830 (SG3)
Gun (GX21)
3A6285
Contractor PC Compact Gun (GX19, GX FF)
3A3172
Pump
Use only genuine Graco replacement parts.
The use of non-Graco replacement parts may void warranty.
3A8429B
www.graco.com/techsupport
EN
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Table of Contents
Related Manuals for Graco GX21
Summary of Contents for Graco GX21
- Page 1 Save these instructions. Related Manuals 312830 (SG3) Gun (GX21) 3A6285 Contractor PC Compact Gun (GX19, GX FF) 3A3172 Pump www.graco.com/techsupport Use only genuine Graco replacement parts. The use of non-Graco replacement parts may void warranty.
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Page 2: Table Of Contents
Graco Standard Warranty ........ -
Page 3: Models
GX21 Cordless 25T967 EMEA GX FF 25U466 FinishPro GX19 25U855 The GX21, GX19, and GX FF Electric Airless Sprayers are compatible with the following DEWALT FLEXVOLT 54V and 60V batteries: • DCB606 - 60V/2ah (20V/6ah) • DCB546 - 54V/2ah (18V/6ah) •... -
Page 4: Important Grounding Information
Important Grounding Information Important Grounding Information Before using your sprayer read this manual for complete instructions on proper use and safety warnings. The following information is intended to help you understand when to use the grounding wire and clamp provided with your sprayer. Please read the information on the material container label to determine if it is oil-based or flammable. -
Page 5: Warnings
All parts of the spray system, including the pump, hose assembly, spray gun, and objects in and around the spray area shall be properly grounded to protect against static discharge and sparks. Use Graco conductive or grounded high-pressure airless paint sprayer hoses. Follow Grounding Instructions, page 10. - Page 6 Check hoses and parts for signs of damage. Replace any damaged hoses or parts. • This system is capable of producing 3000 psi (207 bar, 20.7 MPa). Use Graco parts or accessories that are rated a minimum of 3000 psi (207 bar, 20.7 MPa).
- Page 7 Warnings PRESSURIZED ALUMINUM PARTS HAZARD Use of fluids that are incompatible with aluminum in pressurized equipment can cause serious chemical reaction and equipment rupture. Failure to follow this warning can result in death, serious injury, or property damage. • Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids containing such solvents.
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Page 8: Know Your Sprayer
Know Your Sprayer Know Your Sprayer GX21 Component Identification Gun Fluid Filter (inside handle) ON/OFF Switch Fluid Outlet Fitting (airless hose connection) Pressure Control Knob Grounding Wire with Clamp Gun Fluid Inlet Fitting Inlet Valve Removal Tool Prime Valve Ground Adapter... - Page 9 Know Your Sprayer GX19 and GX FF Component Identification Fluid Outlet Fitting (airless hose connection) ON/OFF Switch Ground Wire with Clamp Pressure Control Knob Inlet Valve Removal Tool Gun Fluid Inlet Fitting Ground Adapter Prime Valve Easy Access Door Push Prime Button ™...
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Page 10: Grounding Instructions
Grounding Instructions Grounding Instructions (Oil-based and flammable materials) Plug the adapter in to a grounded outlet. Connect the grounding wire and clamp to the metal stud on the adapter. If the ground wire is not long enough to reach a grounded electrical outlet, use a 3-wire grounded The equipment must be grounded to extension cord between the adapter and... - Page 11 Grounding Instructions Pails To maintain ground continuity when sprayer is flushed or pressure is relieved: hold metal part of spray gun firmly to the side Solvent and oil-based fluids: follow local of a grounded metal pail then trigger the gun. codes and regulations.
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Page 12: Setup
Remove tip guard. Do not lose the seal. When unpacking sprayer for the first time or after long term storage perform setup procedure. Connect Graco airless hose to fluid outlet. Use wrench to tighten securely. ti25197a Turn Pressure Control Knob all the way left (counter-clockwise) to minimum pressure. -
Page 13: Battery Installation And Removal
Setup Battery Installation and Removal Remove and install battery into the sprayer Always start with a fully charged battery. Do not splash or immerse battery or as follows: charger in water. See battery and charger Remove the used battery, if in place. information shipped with the sprayer. -
Page 14: Pressure Relief Procedure
Pressure Relief Procedure Pressure Relief Procedure Follow the Pressure Relief Turn pressure control to lowest setting. Procedure whenever you see this symbol. This equipment stays pressurized until pressure is manually relieved. To help Hold the gun firmly to a pail, point gun prevent serious injury from pressurized into pail. -
Page 15: Operation
Operation Operation Flush Storage Fluid This sprayer arrives from the factory with a small amount of test material in the system. It is important that you flush this material from the sprayer before using it for the first time. See Cleaning Fluid Compatibility, page 33 and Quick Reference, page 34 for additional information. - Page 16 Operation While holding the drain tube retainer Place drain tube in a grounded waste pail. with drain tube parallel to the top of a waste pail, twist retainer over the lip of the pail. Drain tube should now be inside the waste pail. Submerge suction tube in a grounded pail partially filled with water or flushing fluid.
- Page 17 Operation Press PushPrime button twice to Increase pressure 1/2 turn to start loosen inlet ball. motor. Allow paint or other material to circulate through sprayer until material flows out the drain tube. When sprayer starts pumping, flushing Align setting indicator with low setting fluid and air bubbles will be purged from on Pressure Control Knob.
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Page 18: Fill Pump
Operation Fill Pump For Hopper Models Add paint to hopper. When spraying oil-based or flammable materials, follow For Stand Models Grounding Instructions, page 10. Move suction tube to paint pail and submerge suction tube in paint. When spraying oil-based or flammable materials, follow Grounding Instructions, page 10. -
Page 19: Fill Gun And Hose
Operation Fill Gun and Hose Trigger gun into waste pail until only paint comes out of the gun. Hold gun against waste pail. Point gun Release trigger. Engage trigger lock. into waste pail. Transfer drain tube to paint pail and clip Disengage trigger lock. -
Page 20: How To Spray
How to Spray How to Spray Use spray tip to align gasket and Spray Tip Installation seal in the tip guard. To avoid serious injury from skin injection, do not put your hand in front of the Spray Tip when installing or removing the Spray Tip or Spray Tip Guard. -
Page 21: Spray
How to Spray Spray When a RAC X™ FF LP Fine Finish Low Pressure reversible spray tip is used, spraying pressure can be lowered. Spraying at a lower pressure results in less overspray and reduces spray tip wear. Adjust the sprayer pressure to minimize overspray. -
Page 22: Adjust Pressure Control
See table for recommended spray pressure for your material. Refer to paint (material) can for manufacturer’s recommendations. Maximum tip hole sizes supported by the sprayer: – GX21: 0.021 in. (0.53 mm), GX19 and GX FF: 0.019 in. (0.48 mm). Coatings Stains... -
Page 23: Spray Techniques
How to Spray Spray Techniques • Flex wrist to keep gun pointed straight. Fanning gun to direct spray at angle causes uneven finish. Use a piece of scrap cardboard to practice these basic spraying techniques before you begin spraying the surface. •... -
Page 24: Aiming Gun
How to Spray Aiming Gun • Material may need to be thinned. If material needs to be thinned follow manufacturer’s recommendations. Aim center of spray of gun at bottom edge of previous stroke, overlapping each stroke by Clear Tip Clog half. -
Page 25: Cleanup
Cleanup Cleanup Cleaning the sprayer after each use results in Remove suction tube and drain tube a trouble free start up the next time the from paint, wipe excess paint off out- sprayer is used. side. • For long term storage refer to Storage, page 32. - Page 26 Cleanup Turn Pressure Control Knob to the gun into waste pail until flushing fluid dis- pensed from gun is relatively clear. Prime/Clean setting (the lowest setting at which the pump will run). Place Prime/Spray valve in PRIME posi- tion. 15. Stop triggering gun. Engage the trigger 10.
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Page 27: Power Flush
Cleanup Power Flush Turn on water. Open valve. Rinse paint off suction tube, drain tube and inlet (GX21, Water-Based Materials Only) strainer then close valve. Power flushing is a faster method of flushing. only used after spraying water-based materials. Perform Pressure Relief Procedure, page 14. - Page 28 Cleanup 12. Open Power flush attachment valve. 16. While continuing to trigger gun, quickly move gun to redirect spray into waste pail. Continue triggering gun into waste pail until flushing fluid dispensed from gun is relatively clear. ti27160a 13. Circulate water through sprayer, into waste pail, for 20 seconds.
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Page 29: Hopper Flushing
Cleanup Hopper Flushing Place drain tube in waste pail. (Hopper Models Only) See Cleaning Fluid Compatibility, page 33. When using oil-based or flammable material, follow Grounding Instructions, page 10. Perform Pressure Relief Procedure, page 14. Pour any remaining material out of the hopper. - Page 30 Cleanup NOTE: Step 11 is for returning paint in hose 13. Stop triggering gun. Engage the trigger to paint pail. One 50 ft (15 m) hose holds lock. approximately 1 quart (1 liter) of paint. 11. To recover paint in hose: Point gun into paint pail.
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Page 31: Cleaning Instaclean ™ Fluid Filter
Cleanup Clean the Gun ™ Cleaning InstaClean Fluid Filter Perform Pressure Relief Procedure, page 14 and remove battery, see (Optional) Battery Installation and Removal, page 13. The InstaClean Fluid Filter prevents particles from entering paint hose. After each use, Clean gun fluid filter with water or flush- remove and clean it to ensure peak ing fluid and a brush every time you performance. -
Page 32: Storage
Storage Storage For Hopper Models: Pour Pump With proper storage, the sprayer will be ready to use the next time it is needed. Armor into the hopper and place drain tube in waste pail. Always circulate Pump Armor storage fluid through system after cleaning. -
Page 33: Reference
Reference Reference Understanding Tip Number Spray Tip Selection The last three digits of tip number (i.e.: 221413) contain information about hole size Selecting Tip Size and fan width on surface when gun is held 12 in. (30.5 cm) from surface being sprayed. Spray tips come in a variety of hole sizes for First digit when doubled spraying a range of fluids. -
Page 34: Quick Reference
Reference Quick Reference Page 8 Name Description ON/OFF switch Turns sprayer ON and OFF. Pressure control knob Increases (clockwise) and decreases (counter-clockwise) fluid pressure in pump, hose, and spray gun. To select function, align symbol on pressure control knob with setting indicator, page 14. -
Page 35: Maintenance
• Purchase a pump repair kit and install according to instructions provided with kit, before your next job. ti27463a • See Pump Assembly, page 46 or con- sult a Graco authorized retailer, distrib- utor, or service center. 3A8429B... - Page 36 Maintenance Inlet Valve Removal Slide pump assembly off the mounting pins. An integrated tool is included in the frame to remove the inlet valve assembly from the pump. If you suspect that the inlet valve is clogged or stuck, remove the valve assembly and clean or replace.
- Page 37 Maintenance Clean any debris and dried paint from Swing easy access door pump door the cavity and replace the ball and closed while pushing the entire door spring. Tighten inlet valve to pump towards the inlet end of the pump. using integrated tool on the frame.
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Page 38: Troubleshooting
If paint has hardened in pump. See Pump Removal, page 35. If motor does not turn with pump repaired, consult a Graco authorized retailer, distributor, or service center. Motor or control is damaged. Consult a Graco authorized retailer, distributor, or service center. - Page 39 See Inlet Valve Removal, page 36. Make certain the outlet ball moves free in the housing before replacing. Prime/Spray Valve is worn or Take sprayer to Graco obstructed with debris. authorized service center. 3A8429B...
- Page 40 Troubleshooting Problem Cause Solution Pump is primed, but can not Spray tip may be partially Clear spray tip clog. See, Clear Tip Clog, page 24. achieve good spray pattern. clogged. Reversible spray tip is in Rotate arrow-shaped handle on UNCLOG position. spray tip so it points forward to SPRAY position.
- Page 41 Choose spray tip with narrower fan. Make sure gun is close enough to surface. Fan pattern varies dramatically Pressure control switch is worn Take sprayer to Graco while spraying. and causing excessive pressure authorized service center. variation. Cannot trigger spray gun.
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Page 42: Parts
GX21 Cordless Airless Sprayer Parts GX21 Cordless Airless Sprayer Parts Ref. Torque Ref. Torque Ref. Torque 110-120 in-lb (12 - 14 N•m) 35-45 in-lb (4.0 - 5.0 N•m) 180-220 in-lb (20.3-24.9 N•m) 30-35 in-lb (3.5 - 4.0 N•m) 23-27 in-lb (2.6 - 3.0 N•m) 8-10 in-lb (0.9 - 1.2 N•m) - Page 43 GX21 Cordless Airless Sprayer Parts GX21 Cordless Airless Sprayer Parts List Ref. Part Description Qty. Ref. Part Description Qty. 17J444 STRAP, carry (not shown) 20A066 KIT, motor, includes 34 17J277 TRAY, drip 17J869 KIT, gear and yoke, includes 17J618 SHIELD, paint...
- Page 44 GX19 and GX FF Portable Hopper Sprayer GX19 and GX FF Portable Hopper Sprayer Parts Ref. Torque Ref. Torque Ref. Torque 110-120 in-lb (12-14 N•m) 35-45 in-lb (4-5 N•m) 30-35 in-lb (2.4-4 N•m) 23-27 in-lb (2.6-3 N•m) 8-10 in-lb (0.9-1.1 N•m) 80-90 in-lb (9-10.2 N•m) 3A8429B...
- Page 45 GX19 and GX FF Portable Hopper Sprayer GX19 and GX FF Portable Hopper Sprayer Parts List Ref. Part Description Qty. Ref. Part Description Qty. 20A010 BUTTON, door hinge 20A066 KIT, motor, drive 119236 SCREW, mach, torx, pan hd. 17J863 KIT, gear and yoke, includes LABEL, identification LABEL, safety, warning ...
- Page 46 Pump Assembly Pump Assembly Ref. Torque Ref. Torque 140-160 in-lb (16 - 18 N•m) 220-250 in-lb (25 - 28 N•m) 270-330 in-lb (30 - 37 N•m) 320-380 in-lb (36 - 43 N•m) 30-35 ft-lb (40 - 48 N•m) 180-220 in-lb (20 - 25 N•m) 3A8429B...
- Page 47 Description Qty. Ref. Part Description Qty. ipres 24Y327 KIT, repair outlet, includes HOUSING, pump 12, 13 17G447 GX21 stand models 17J880 KIT, outlet valve repair 17H605 GX19 hopper models includes 42 17D364 GUIDE, ball 128323 SPRING, valve 128336 SPRING, compression...
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Page 48: Wiring Diagrams
Wiring Diagrams Wiring Diagrams 3A8429B... -
Page 49: Technical Specifications
Technical Specifications Technical Specifications GX21, GX19 and GX FF Cordless Sprayers Metric Sprayer GX21 GX19 and GX FF GX21 GX19 and GX FF Maximum fluid working pressure 3000 psi 207 bar, 20.7 MPa Maximum Delivery 0.47 gpm 0.38 gpm 1.8 lpm 1.4 Ipm... -
Page 50: Graco Standard Warranty
Graco’s written recommendations. This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of non-Graco component parts. -
Page 51: Graco Information
Graco Information Graco Information For the latest information about Graco products, visit www.graco.com. For patent information, see www.graco.com/patents. TO PLACE AN ORDER, contact your Graco distributor or call 1-800-690-2894 to identify the nearest distributor. 3A8429B... - Page 52 Original instructions. This manual contains English. MM 3A8429 Graco Headquarters: Minneapolis International Offices: Belgium, China, Japan, Korea GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA Copyright 2021, Graco Inc. All Graco manufacturing locations are registered to ISO 9001. www.graco.com...