Operation GMAX™ II 3900/5900/5900HD/5900 Convertible/7900 TexSpray 5900HD Convertible/7900HD 3A0242A Airless Sprayers ENG - For Portable Airless Spraying of Architectural Coatings and Paints 3300 psi (22.8 MPa, 228 bar) Maximum Working Pressure IMPORTANT SAFETY INSTRUCTIONS Read all warnings and instructions in this manual. Save these instructions.
Warning Warning 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, 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.
Warning WARNING 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. • Many other fluids may contain chemicals that can react with aluminum.
Component Identification Component Identification 14. 1. ON 13. OFF 2. 12. 3. 4. ON 11. OFF 5. 6. 7. 8. 9. 10.
Pressure Relief Procedure Pressure Relief Procedure 5. Lock gun trigger safety. 6. Open pressure drain valve. Leave valve open until ready to spray again. 1. Lock gun trigger safety. 2. Turn engine ON/OFF switch to OFF. 3. Move pump switch to OFF and turn pressure control knob fully counterclockwise.
Setup Convertible Models Only: Change Engine to Motor 1. Disconnect engine power cord. 5. Look through side vent holes and ensure drive belt is in motor pulley. ti5774a ti5772a 2. Release tension bar. 6. Secure motor with tension bar. 3. Remove engine; tilt and slide back. 7. Plug in pressure control power cord. ti5779a ti5776a 4. Install motor; drop in and push forward.
Startup Startup c. 1. Place suction tube and drain tube in grounded metal pail partially filled with flushing fluid. Attach ground wire to pail and to earth ground. Set throttle to fast. ti5250a d. Set engine switch to ON. ti14844a ti5262a 2. Turn prime valve down to DRAIN position. Turn pressure control counterclockwise to lowest pressure. 5. Pull rope to start engine. ti5789a ti5263a ti14842a 3. Set pump switch OFF. ti5790a 6.
Startup 8. Hold gun against grounded metal flushing pail. Trigger gun and increase fluid pressure slowly until pump runs smoothly. Switch Guard Assembly 1. Put trigger safety ON. Insert SwitchTip. Insert seat and OneSeal™. C A B ti5796a ti13243a Inspect fittings for leaks. Do not stop leaks with your hand or a rag! If leaks occur, turn sprayer OFF immediately. Perform Pressure Relief Procedure steps 1-3, page 5. Tighten leaky fittings. Repeat Startup procedure steps 1 - 5.
WatchDog™ Protection System (Not Available on All Units) Hose Reel Clearing Tip Clogs 1. Release trigger, put safety ON. Rotate SwitchTip. Take safety OFF. Trigger gun to clear clog. Never point gun at your hand or into a rag! Be sure to keep your head clear of hose reel while winding up hose. ti10166a ti13033a ti10167a 1. Make sure hose is routed through hose guide. 2. Put safety ON. Return SwitchTip to original position. Take safety OFF and continue spraying.
Digital Tracking System Digital Tracking System Operation Main Menu Job Gallons Short press to move to next display. Press and hold (5 seconds) to change units or reset data. 1. Short press DTS button to move to Job Gallons (or liters x 10). Psi ti13612a ti13620a ti13605a 1. Turn pressure to lowest setting. Trigger gun to relieve pressure. Turn prime valve down to DRAIN position. ti13610a NOTE: JOB scrolls past, then the number of gallons sprayed above 1000 psi (70 bar, 7 MPa) displays.
Digital Tracking System Secondary Menu - Stored Data and WatchDog Pump Protection Modes 1. Perform Pressure Relief, steps 1 - 4 if they have not already been done. 6. Press and hold DTS button to clear error code to zero. 2. Turn power switch on while holding DTS button down. ti4266a ti13609a ti13606a ti13605a 3. The sprayer model briefly displays (e.g. 5900), SERIAL NUMBER scrolls past and then serial number (e.g. 00001) displays. 7. Short press DTS button.
Cleanup Cleanup 6. Turn prime valve forward to SPRAY position. Trigger gun into flushing pail to purge fluid from hose. 1. Perform Pressure Relief Procedure (page 5), steps 1 - 4. Remove siphon tube set from paint and place in flushing fluid. Remove tip guard from gun. ti14847a ti14845a 7. Raise siphon tube above flushing fluid and run sprayer for 15 to 30 seconds to drain fluid.
Notes Notes 3A0242A 13
Notes Notes 14 3A0242A
Notes Notes 3A0242A 15
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.
