MODEL H8224 HVLP SPRAY GUN INSTRUCTION MANUAL COPYRIGHT © AUGUST, 2007 BY GRIZZLY INDUSTRIAL, INC. WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
SAFETY For Your Own Safety Read Instruction Manual Before Operating This Equipment The purpose of safety symbols is to attract your attention to possible hazardous conditions. This manual uses a series of symbols and signal words which are intended to convey the level of importance of the safety messages. The progression of symbols is described below. Remember that safety messages by themselves do not eliminate danger and are not a substitute for proper accident prevention measures.
6. USE CORRECT AIR PRESSURE. Exceeding the maximum PSI rating of this spray gun may cause unpredictable operation or bursting. 7. DISCONNECT AIR PRESSURE before servicing, changing accessories, or moving to another location. Never leave this spray gun unattended when connected to air. 8. AVOID IGNITION SOURCES. Spraying around ignition sources may cause fire or an explosion. Do not spray around any ignition sources or potential ignition sources.
INTRODUCTION Foreword Specifications The specifications, details, and photographs in this manual represent the Model H8224 as supplied when the manual was prepared. However, owing to Grizzly’s policy of continuous improvement, changes may be made at any time with no obligation on the part of Grizzly. Cup Size ............................................120cc Feed Type ....................................... Gravity Fluid Tip Size................................... 0.8mm Air Consumption ..................
SETUP Inventory Assembly & Setup Your spray gun left our warehouse in a carefully packed box. If you discover the spray gun is damaged after you have signed for delivery, please immediately call Customer Service at (570) 546-9663 for advice. Before assembling and using the spray gun, thoroughly clean and dry all parts. Please refer to Cleaning in the MAINTENANCE section on Page 10 for more detailed instructions.
3. Controls Install and tighten the barbed hose fitting to the air inlet with the provided nut; or attach a female 1⁄4" NPT quick connect fitting (not included) to the air inlet for connection to an air coupler. Atomizing Cap Cup Fluid Control Note: Using a 1⁄4" NPT quick disconnect set-up, will make operation and maintenance tasks easier. 4. Attach the spray gun to an air hose regulated between 44 and 58 PSI.
OPERATIONS Spraying EXPLOSION HAZARD! DO NOT smoke or allow any source of flame or spark near spraying. Vapors will explode if ignited. The Model H8224 HVLP spray gun set is designed to spray a wide variety of materials such as lacquers, stains, primers, multi-component paints, clear coats, acrylics, epoxies etc. It is ideal for auto body and woodworking projects. To use your spray gun: 1.
7. Adjust the fluid control knob to start with a low volume of material and keep the atomization as low as possible. You will need to use a combination of fluid control, inlet air pressure, air flow control and stroke speed to achieve the results you want. Spray so the material wets out nicely without running or sagging. 8. Use the pattern control knob to adjust the spray fan to your desired pattern. 9.
Atomizing Cap and Fan Adjustments The atomizing cap can be adjusted for horizontal or vertical spraying patterns. Spraying in the wrong direction may lead to material build up on the atomizing cap horn. Many performance problems are caused by clogged atomizing holes on the atomizing cap horns (see Cleaning on Page 10). Stroke Pattern Pattern Stroke Pattern Control Figure 8. Set up for horizontal spray stroke with vertical fan pattern.
ACCESSORIES G6261—Campbell Hausfeld™ Water Filter Filtering out water and oil before it reaches the spray gun is critical for high quality spraying results. This filter is rated at 150 PSI maximum air pressure, and has a 1⁄4" NPT air inlet. H7274—Campbell Hausfeld™ Pressure Regulator Since PSI drops as it travels through air hose, attaching a regulator directly to the spray gun ensures accurate air regulation for the best results possible.
MAINTENANCE Cleaning 5. Unscrew the atomizing cap and the fluid tip. The fully disassembled gun should look like Figure 14. Proper cleaning is the best way to ensure trouble free performance from your spray gun. If your gun is not thoroughly cleaned, damage and poor spraying will result. Problems caused by improper cleaning will not be covered by the warranty. Clean the spray gun immediately after each use. 6. Rinse all parts thoroughly in solvent, then dry with compressed air or let air dry.
Lubrication Lubricate the following areas with a nonsilicon spray-gun lubricant after cleaning. A. B. C. D. E. F. Atomizing Cap Threads Air Valve Packing Trigger Pin Pattern Control Fluid Control Knob Air Flow Control Knob Allow the lubricant to coat threads, and run into gun body to lubricate all moving parts and seals. A B E D C F Figure 15. General lubrication points.
Troubleshooting Symptom Possible Cause Solution Fluttering or spitting spray. 1. Dry or worn fluid tip seat permits air to seep into fluid passage. 2. Material level too low. 3. Fluid tip or filter obstructed. 4. Dry needle packing. 1. Tighten fluid tip or replace seat with new one. 1. Atomizing cap holes are obstructed. 2. Build-up on top or bottom of fluid tip. 3. Build-up on atomizing cap is on needle seat. 1. Clear holes. 1. Left or right side horn holes are plugged. 2.
Symptom Possible Cause Solution Excessive overspray. 1. Fluid pressure too high. 2. Gun is too far from surface. 1. Reduce fluid pressure. 2. Keep gun at recommended distance. 3. Slow down and maintain consistent, even parallel stroke. 3. Spraying too fast. Unable to control spray fan. 1. Pattern adjustment screw is not seating properly. 2. Atomizing cap is loose. 1. Clean or replace. Runs and sags. 1. Damaged seal. 1. Replace damaged seals. Material leaks from cup. 1. Cap not secure. 2.
Parts Breakdown H8224 �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� �� � � �� �� �� � � � � �� �� �� � � � �� REF PART # DESCRIPTION REF PART # DESCRIPTION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 AIR ADJUST SCREW AIR ADJUST KNOB O-RING 2.5 X 1.5 S3 DOMED SEAL WASHER AIR INLET SPRING AIR INLET VALVE SWITCH SPRING AIR VALVE ASSEMBLY FOAM WASHER O-RING 4.5 X 1.
