Instructions – Parts List Parts Airless Spray Gun 306796H Model 206408, Series H 3000 psi (21.0 MPa, 210 bar) Maximum Working Pressure Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. 7414A GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441 Copyright 2002, Graco Inc. is registered to I.S.
Table of Contents Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Technical Data . . . . . . . . . . . . . . . . . . . . .
WARNING FIRE AND EXPLOSION HAZARD Improper grounding, poor air ventilation, open flames, or sparks can cause a hazardous condition and result in fire or explosion and serious injury. D Ground the equipment and the object being sprayed. See Grounding on page 4. D Provide fresh air ventilation to avoid the buildup of flammable fumes from solvent or the fluid being sprayed. D Extinguish all the open flames or pilot lights in the spray area. D Electrically disconnect all the equipment in the spray area.
Installation Grounding WARNING FIRE AND EXPLOSION HAZARD Before operating, ground the system as explained below. Also read the section FIRE AND EXPLOSION HAZARD on page 3. To reduce the risk of static sparking, ground all the dispensing equipment used or located in the work area. Check you local electrical code for detailed grounding instructions for your are and type of equipment. Be sure to ground all of this equipment.
Installation NOTE: Numbers and letters in parentheses in the text correspond to the reference numbers and letters in the text and drawings. WARNING 1. Connect a grounded fluid hose to the gun inlet. 2. With no tip installed, start the pump/sprayer. Flush it according to the instructions supplied with it. Prime the system with the fluid you are using. 3. Relieve the pressure. Be sure your system has a bleed-type master air valve (pneumatic pumps only) and a fluid drain valve.
Operation Pressure Relief Procedure WARNING INJECTION HAZARD 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: D D D D are instructed to relieve the pressure, stop spraying, check or service any of the system equipment, or install or clean the spray tips. 1. Engage the gun safety knob. 2.
Operation WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 6. Whenever you stop spraying for a moment, engage the gun safety latch. See Fig. 2. How to use the Safety Knob (Fig. 2) To engage the safety knob, turn the knob fully clockwise which locks the needle in the forward position, making the valve inoperative.
Operation Adjusting the Spray Pattern CAUTION WARNING Openings in the tip guard are designed to reduce paint buildup on the guard while spraying. Any damage to the sharp edges of the openings causes paint to collect at that area. To reduce the risk of damage, never hang the gun by the tip guard. To reduce the risk of a fluid injection injury, never use the gun with the tip guard or trigger guard removed. To adjust the orientation of the spray pattern, relieve the pressure.
Operation Flushing the Gun WARNING Lubrication Oil the exposed part of the valve rod (18) and the trigger pivot (9) daily. See Fig. 4. To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 6. WARNING Before flushing, be sure the entire system and flushing pails are properly grounded. Refer to Grounding on page 4. Relieve the pressure and remove the spray tip from the gun.
Service WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 6. NOTES: D If the gun keeps spraying after you release the trigger, the valve rod (needle) may be obstructed, worn or damaged, or it may need adjusting. Follow the repair instructions below. D Before servicing, be sure all necessary repair parts are available. D See the Parts Drawing on page 12. Disassembly 1.
Service Adjusting the Needle WARNING Proper adjustment of the needle is essential to be sure the safety knob makes the gun inoperative when engaged. Improper adjustment may allow the gun to be triggered, even with the safety knob engaged (turned fully clockwise), which can result in serious injury, including fluid injection and splashing in the eyes or on the skin. To check for proper adjustment, engage the safety knob (4) and check the free play in the trigger. It should be 1/8 to 5/16 in. (3 to 8 mm).
Parts Model 206408, Series H 23 22 2 20 4 1 15 13 21 14 11 9 12 18 10 six v-packings 19 16 3 25 27 7415A 26 Ref No. Part No. Description 1 104301 CAPSCREW, soc hd, 5–40 UNC-2a x 0.
Technical Data Category Data Maximum fluid working pressure 3000 psi (21.0 MPa, 210 bar) Fluid valve orifice size 0.188 in. (4.78 mm) diameter Fluid inlet 1/4 npsm Fluid outlet 7/8–1/4 npt Wetted parts aluminum, tungsten carbide, stainless steel, zinc-plated steel, PTFE, brass, DelrinR Length 8.125” (206 mm) Height 5” (127 mm) Weight 2 lb (0.9 kg) DelrinR is a registered trademark of the DuPont Company.
Graco Warranty Graco warrants all equipment listed in this manual which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale by an authorized Graco distributor 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.
