DeVilbiss. JGHV-530 High Volume Low Pressure Spray Gun. ~J tl

Transcription

1 DeVilbiss JGHV-530 High Volume Low Pressure Spray Gun SERVCE BULLETN SB E Replaces SB D Repair Kit KK MPORTANT: Before using this equipment, read all safety precautions and instructions. Retain for future use. DESCRPTON The JGHV-530 is a primary, high production spray gun. t can be used with a wide variety of finishing materials. All models are designed to provide maximum transfer efficiency by limiting air cap pressure to 10 psi (complies with rules issued by SCAQMD and other air quality authorities). The gun is intended for use with pressure feed paint supply only. Mostfinishing materials can be atomized with the #28 air cap. The #28 air cap should be used where possible as it consumes less air volume (CFM) and has slightly better transfer efficiency than the #46MP or #83MP air caps. However, more difficult to atomize materials (i.e. low VOC's) or high flow applications (over 12 ounces/ minute), are ideal for the #46MP (maximum performance) air cap, fluid tip and baffle combination. Also available is the #83MP (maximum performer) for even higher flows (17 oz./min. and above), and viscosities. Refer to the air cap chart for more information. Spray guns with a 28 nozzle combination can be converted to 46MP or 83MP if desired. AR CAPS- PATTERNS- APPLCATONS Air Cap 'Typical Pattern Size Typical No. and Shape Application #28 11" long, straight sided, Most common similar to #704 air cap. finishing materials uo to 12 oz./min. #33A 9" long, tapered ends, (optional) similar to #30 air cap. #46MP 11" long, straight sided Low VOC materials, similar to #704 air cap 12 to 16 oz./min. #83MP 13" long, straight sided, Low VOC materials, similar to #765 air cap. 17 oz.!m'1n & above. Actual pattern length dependent upon fluid lip D, fluid flow rate, viscosity, air pressure, and fan pressure. These gun models will produce approximately 10 psi cap pressure at the corresponding gun inlet pressure, as measured at the gun inlet. Air cap test kits (see Accessories) should be used to insure 1 0 psi air cap pressure is not exceeded. ~J tl Example: Gun Model j Air Cap No. NSTAllATON Fluid Tip nlet Operating Pressure 5=50PS 6 = 65 PS Do not use more pressure than is necessary to atom ze the material being applied. To provide optimum performance and assure compliance with all air quality regulations, an air cap test gauge kit is available to determine actual air cap pressures being used. See Accessories. Connect the gun to a clean, moisture and oil free air supply using a hose size of at least 5116". D. Avoid use of quick detachable connectors. Do not use 1/4" D hose (25' x 1/4"hoseat 18 CFM has apressurelossof25 psi. A 25' x5/16" hose at 18 CFM has a pressure loss of 8.1 psi). Note Depending on hose length, larger hose. D. may be required. nstall an HAV -501 air gauge at the gun handle and air cap test kit over tip. When gun is triggered on, adjust regulated pressure to desired setting to provide a maximum of 10 psi at the air cap. Do not use more pressure than s neces sary to atomize the material being applied. Note All wetted surfaces are stainless steel and may be used with materials formulated with chlorinated solvents. Combinations available as standard are: Order No. JGHV-5285-FF, FX, E, GX JGHV-5465-FF, FX JGHV-5836-E, D Gun nlet Pressure 50 PS 50 PS 65 PS OCopyright 1995, DeVilbiss ndustrial Spray Equipment

2 Page 2 SB E SAFETY PRECAUTONS This manual contains information that is improtant tor you to know and understand. This information relates to USER SAFETY and PREVENTNG EQUPMENT PROBLEMS. To help you recognize this information, we use the following symbols. Please pay particular attention to these sections. L WARNNG Note mportant safety nformation A hazard that may cause serious njury or loss of life. mportant lnfonmatlon that tells howto prevent damage to equipment, or how to avoid a situation that may cause minor inury. WARNNG nformation that you should pay special attention to. The following hazards may occur during the normal use of this equipment. Please read the following chart before using this equipment. Area Hazard Safeguard Tells where hazards Solvent Spray Tells what hazard s. o vent and coat1ngs can e 1g y flammable or combustible especially when sprayed. During cleaning and flushing, solvents can be forcefully expelled from fluid and air passages. Some solvents can cause eye injury. Tells how to avoid the hazard. Smoking must never be allowed in the spray area. Fire extinguishing equipment must be present in the spray area. Wear eye protection. Explosion Hazard - Materials Certain materials may be harmful if inhaled, or if there is contact with the skin. Halogenated hydrocarbon solvents -for example; methylene chloride and 1, 1, 1 - Trichloroethane can chemically react with aluminum. The chemical reaction caused by these solvents reacting with aluminum can become violent and lead to an equipment explosion. Follow the requirements of the Material Safety Data Sheet supplied by your coating material manufacturer. Adequate exhaust must be provided to keep the air free of accumulations of toxic materials. Use a mask or respirator whenever there is a chance of inhaling sprayed materials. The mask must be compatible with the material being sprayed and its concentration. Equipment must be as prescribed by an industrial hygienst or safety expert, and be NOSH approved. This gun can be used with these solvents. However, aluminum is widely used in other spray application equipment - such as, material pumps, cups, regulators, valves, etc. Check all other equipment items before use and make sure they can also be used safely with these solvents. Read the label or material data sheet for the material you intend to spray. f in doubt as to whether or not a coating or cleaning material is compatible, contact your material supplier.

3 OPERATON Adjust fluid pressure to deliver the desired paint volume. As a general rule of thumb, the following fluid flow and tip sizes should be followed. Refer to the next paragraph also on "Back Pressure". Adjust air pressure and flow to provide a uniform dispersion of atomized paint throughout the pattern. Excessive flow rates will resuh in heavy center spray patterns. nadequate flows may cause the pattern to split. See Spray Gun Guide, SB latest revision, for details concerning set up of spray guns. Back Pressure-46MP & 83MP "Maximum Performer" Due to the unique cone shape of the M P fluid tips, a slight back pressure is created against the fluid column. This will reduce the amount of fluid output. To compensate, increase the fluid regulator pressure slightly. With 10 PS cap pressure, back pressures are approximately 3.5 PS with the 46MP and 2.0 PS with the 83MP. HVLP requires gun distances of 6-8" be used. Excess distance will produce inferior resu~s. PREVENTVE MANTENANCE Note f the baffle (6) is removed for any reason, replace the 0-ring (5). To prevent damage to the 0-ring during installation, apply SSL -1 0 gun lube to exterior of 0-ring and D of baffle. To clean air cap and fluid tip, brush exterior with a stiff bristle brush. f necessary to clean cap holes, use a broom straw or toothpick. Never use a wire or hard nstrument. This may scratch or burr holes causing a distorted spray pattern. To clean fluid passages, remove excess material at source, then flush with a suitable solvent using a device such as the SolventSaverrM (see Accessories). Wipe gun exterior with a solvent dampened cloth. Never completely immerse in solvent as this is detrimental to the performance and gun life expectancy, as well as destroying the lubricants and packings. JGHV-116-K5 Gasket Replacement nstructions 1. Remove fluid inlet adapter (9) with 6mm Allen Wrench. 2. Clean loctite from gun body inlet threads and seat area. 3. Place gasket (7) squarely into the fluid inlet cavity in the gun body. Push the gasket (7) down with a blunt object, such as a pen or pencil, to guide and seat the gasket squarely into the gun body. SB E Page 3 4. Place a couple of drops of QH-130 (medium strength No. 242 blue Loctite) on threads before installing fluid inlet adapter (9). 5. Torque fluid inlet adapter to 10ft. lbs. and tighten locknut (8). : CAUTON ~ To avoid serious gun damage, do not remove the fluid tip (3) 'trom the spray gun when the fluid inlet adapter (9) s removed. Doing so may allow the stainless steel insert to break free from the aluminum body, which is non-repairable. To prevent damage to the fluid tip (3) or fluid needle (29), be sure to either 1) pull the trigger and hold while loosen ng or tightening the fluid tip or 2) remove fluid needle adjusting screw (32) to relieve spring pressure. the air cap is changed, the baffle must also be changed. Use of incorrect baffle and cap set will result in substandard performance and or improper air cap pressures. See Chart 1 for ordering information. Maximum air pressure required to assure compliance of 10 PS Max. Cap Pressure - this reading must be taken at the spray gun handle inlet fitting. Figure 1 Baffle Air cap number located on face of cap - cap number must correspond with baffle number to assure i 0 PS cap pressure.

4 Page 4 CHART 1 SB E AR CAP & BAFFLE COMBNATONS No.Stamped on Parts Set Air cap Ref. No.2 Part No. Baffle Air Cap ' Rei. No.6 Baffle Cap Pressure 2 PS 4PS 6 PS 8 PS 10 PS JGHV A JGHV A JGHV A JGHV A 46MP JGHV MP 83MP JGHV MP JGHV JGHV JGHV JGHV JGHV JGHV Optional - Not available on factory assembled spray guns. Order separately. CHART 2 PARTS LST STANDARD FLUD TPS & NEEDLES. LAPPED SETS (400 GR. S.S.) this is No. on Lapped Fluid Tip TD Order_.. & Needle Assemblv AV-2115-FX JGA-4040-FX AV-2115-FF JGA-4040-FF AV-2115-E JGA-4040-E AV-2115-GX JGA-4040-GX AV-2120-FX" JGA-4045-FX" AV-2120-FF" JGA-4045-FF" AV-2120-E"" JGA-4045-E AV JGA "" OPTONAL FLUD TPS AND NEEDLES LAPPED SETS (303 GR. SS) AV-1915-FX JGA-4055-FX AV-1915-FF JGA-4055-FF AV-1915-E JGA-4055-E AV-1920-FX" JGA-4050-FX" A V FF" JGA-4050-FF". For use w1th 46MP alf cap. ""For use with 83MP air cap. Note: Do not use AV-1 gasket with this spray gun. Spray Gun Lubrication Daily, apply a drop of gun lube at trigger bearing stud (21) and the stem of the air valve (14) where it enters the air valve assembly (17). The shank of the fluid needle (29) where it enters the packing nut (19) should also be oiled. The fluid needle packing (18) should be kept soft and pliable by periodic lubrication. Make sure baffle and retaining ring threads are clean and free of foreign matter. Before assembling air cap to baffle, clean the retaining ring and baffle threads thoroughly, then add two drops of SSL 10 spray gun lube to threads. The fluid needle spring (31) and air valve spring (15) should be coated with a very light grease, ensuring that any excess grease will not clog the air passages. For best results, lubricate the points indicated daily using SSL-10 spray gun lube. A. Trigger points B. Packing C. Adjusting valve 0. Baffle & retaining ring threads E. Air valve cartridge Not for air tools or high RPM equipment Ret. Replacement ndividual No. Part No. Description Parts Req. 1 Mt:!l.;-368 Hetammg Ring 1 2 See Chart 2 Air Cap 1 3 See Chart 1 Fluid Tip 1 4 JGD-14-K10 Seal (Kit of 10) 1 (Polyethylene) 5 SSG-8182-KS 0-Ring (Kit of 5) (Buna-N) 1 6 See Chart 2 Baffle, Seal & 0-Ring Kit 1 7 JGHV-116-K5 Gasket (Kit of 5) (Glass 1 F11led Tell on) 8 Locknut Fluid nlet Adapter 3/8 NPS 1 10 JGV-444 Fluid nlet, Nut & 1 Gasket Kit 11 Snap Ring 1 12 Washer 1 13 "U" Cup 1 14 Air Valve Spring 1 16 JGS-72-K10 Gasket (Kit of 10) (Teflon) 2 17 JGS Air Valve Assembly 1 18 JGA-4035-K1 0 Packing (Kit of 10) K1o Needle Packing Nut 1 (Kit of 10) 20 Screw Trigger Bearing Stud 1 22 JGS-478 Stud & Screw Kit (Kit 1 includes 3 studs, 5 screws) 23 JGS-477 Trigger, Stud & Screw Kit 1 (Kit includes 1 each) 24 JGA-132 Plug 1 25 P-MB-51 Connector 1/4" NPS 1 26 JGA Air Valve Assy. -Horn 1 27 Retaining Ring Ring 1 29 See Chart 1 Fluid Needle Gun Body Bushing 1 31 MB0-19-K10 Spring (Kit of 10) 1 32 JGS-16 Needle Adjusting Screw 1 33 JGA-4041 Bushing, Spring & Knob Kit 1 34 See Chart 1 Lapped Fluid Tip & Needle i (Not shown) (includes Ref. Nos. 3 and 29) A quantity of necessary parts is included in Gun Repair Kit KK and should be kept on hand lor service convenience.

5 SB E Page Torque tip to ft. lbs. 3 2s:. ; ~~~ 6 \ Dl.]fe} 33? \ ~ @) [- 1 - _j,.,br-r : 1-r;rque lj to 10 ft.lbs. 1 Fluid nlet 19 \ 318" NPS!Ml 1 ill~ll j \.25 ~ Mtr:- Torque 24!?' to 15ft. t lbs. Air nlet 114" NPS(M) ~ A (Ref. No. 18) Needle Packing Assy. Deg tailed 3 Piece Drawing Sutiixes -K1 0, etc. designates kits of multiple parts. Example: JGD-14-K10 is a kit of 10 seals. # Use JGS valve assembly only. Do JJ.Q1 use JGS-449. Pressure drop will occur. "Apply QH-130 (Loctite #242, med. strength blue) sealing compound onto these threads.

6 Page 6 SB E TROUBLESHOOTNG Condition Heavy top or bottom pattern Cause Horn holes plugged. Correction Clean. Ream with non-metallic point. ' ' Heavy right or left side pattern )( Obstruction on top or bottom of fluid tip. Cap and/or tip seat dirty. Left or right side horn holes plugged. Dirt on left or right side of fluid tip. Clean. Clean. Clean. Ream with non-metallicpoint. Clean. Remedies for top-heavy, bottom-heavy, right-heavy and left-heavy patterns: 1) Determine if obstruction is on cap or fluid tip. Do this by making a test pattern. Then, rotate cap one-half turn and spray another pattern. f defect is inverted, obstruction is on air cap. Clean air cap as previously instructed. 2) f defect is not inverted, tt is on fluid tip. Check for a fine burr on edge of fluid tip. Remove with #600 wet or dry sand paper. 3) Check for dried material just inside opening. Remove by cleaning. Heavy center pattern t Split spray pattern l Jerky or fluttering spray B' 1 11U Will not spray Excessive overspray Material flow exceeds air cap's capacity. Atomizing pressure too low. Material too thick. Fluid adjusting knob turned in too tar. Atomization air pressure too high. Loose or damaged fluid tip /seat. Material level too low. Container tipped too far. Obstruction in fluid passage. Loose or broken fluid tube or fluid inlet nipple. Dry or loose fluid needle packing nut. No air pressure at gun. Fluid needle adjusting screw not open enough. Fluid pressure too low with internal mix cap and pressure tank. Too much atomization air pressure. Gun too far from work surface. mproper stroking (arching, gun motion to fast). Thin or lower fluid flow. ncrease pressure. Thin to proper consistency. Back out counterclockwise to achieve proper flow. Reduce air pressure. Tighten or replace. Refill. Hold more upright. Clean according to material supplier's recommendations. Tighten or replace. Lubricate or tighten. Check air supply and air lines. Open fluid needle adjusting screw. ncrease fluid pressure at tank. Reduce pressure. Adjust to proper distance. Move at moderate pace, parallel to work surface.

7 SB E Page 7 Condition cause Correction Dry Spray Air pressure too high. Decrease air pressure. Gun tip too far from work surface. Gun motion too fast. Gun out of adjustment. Adjust to proper distance. Slowdown. Adjust. Fluid leaking from packing nut Packing nut loose. Tighten, do not bind needle. Packing worn or dry. Replace or lubricate. Fluid leaking or dripping from Foreign matter in tip. Clean. front of gun Packing nut too tight. Adjust. Dry packing. Fluid tip or needl e worn or damaged. Fluid needle spring deformed or broken. Lubricate. Replace tip & needle with lapped sets. Replace. Runs and sags Too much material flow. Adjust gun or reduce fluid pressure. Material to thin. Gun tilted on an angle. Mix properly or apply light coats. Hold gun at right angle to work and adapt to proper gun technique. Thin, sandy coarse finish. Gun too far from surface. Check distance. Normally 6-8" Drying before it flows out Too much air presure. Reduce air pressure and check spray pattern. mproper thinner being used. Follow paint manufactuer's mixing instructions. Thick, dimpled finish "orange Gun too close to surface. Check distance. Normally 6-8". peel". Too much material coarsely atomized. Air pressure too low. ncrease air pressure or reduce fluid pressure. mproper thinner being used. Material not properly mixed. Surface rough, oily, dirty. Follow paint manufacturer's mixing instructions. Follow paint manufacturer's mixing instructions. Properly clean and prepare. Excessive fog Too much, or too fast-trying thinner. Remix properly. Too much atomization air pressure. Reduce pressure. Unable to get round spray Fan adjustment screw not seating Clean or replace. properly. Air cat! retain ina rino loose. Tiahten.. Most common problem.!

8 Page 8 SB E SERVCE BULLETN REVSONS Refer to the following chart lor Part No /Literature changes i!'art NO. Old Part No. New Part No. nterchangeability No. 33 Air Cap & No. Not available on factory 80 baffle combinations assembled guns, order separately. Literature Changes i. Added Figure 1, Pg. 3, information on checking Max. air pressure at air cap. 2. Revised Chart Added Safety Precautions & Troubleshooting into manual. ACCESSORES KB-&55 (Aluminum) & KB-545-SS (SS) 2 at PNG&ure Feed Cup with Regulator ' Provides greater degree ot control over cup fluid pressure. KB at Pre..we Feed Cup with ReguiatM Q1!.,, Attaches directly to spray gun. TLC-.576 Aluminum Cup (f afton lined) & TSC-0{11 Stalnteu Steel """ rr ~~~ r 1 'A d~ 1 Ot. pressure feed cups. 318" NPS lf), cambcked lid. Requires KK-4980 Regulator Kit VS..531 Low Pressure Strainers The VS-531 low Pres- sute Fluid Strainer pro. vide& a tlnal filter for trapping O«Jign panicle& ln the paint supply. Contalnsailnecessarytlp. ho6a and nut sizes usad on or with gun KS (318.. ) KlO (5/8'j Cklaning Bruahee / These brushes are helpful n cleaning threads and recesses of gun body. KK-4976 Adapter/Quick Connect Kit - For either JGHV-530 or JGHV-520 gun inlet. KK-4979 Check Valve/Poppet Kit- Converts TLC-575 and TSC-590 for paint cup regulator. SPRAY GUN WBE SSL-10 (2 oz. botue) HD.&la & PTZ-502 SolventSaver,... HoM! KK~4980 Air Regulator Kit- To convert JGHV-530 or JGHV-520 and TLC-576 cup for paint cup pressure control. ncludes KK-4978 and KK TGC-429 New Teflon Style Check Valve- Use with TLC-575. TLC- 576 or TSC-590 and TSC (FX) (FF) Resilient Tipped Needle- Suited for use with organic finishing materials and many wood sealers containing silica. VS~531 Low Pressure Fluid Strainer- This strainer provides a final filter for trapping foreign particles in the paint supply. JGA-444 Fluid Tube- This tube combines the fluid and air hoses at gun handle preventing dragging hoses over work, twisting lines and improving overall gun handling. QMGZ & QMSZSolventSaverTM 2, 5, 10 & 15 Gallon Galvanized or Stainless Steel Tank Hose/Gun Cleaners~ Used to clean the inside of hose and material passages of the gun. KK~5004 Pressure Feed to Suction Feed Conversion Kit.. Allows a painter to convert spray gun into a suction feed type spray gun. Corrpatble with all paint materials:contalns no sincone or petroleum distillates tocontarrlnatepaint. MSP-52:1 Twin cartridge Pa!nt Spray Reaptrator NOSH Certlfl&d (TC- 23C-a63} lor respiratory protection n atmospheres not lmmeditelydangerous to 111e. (HD-503 shown) 2 Ot. & 2-1/2 Gal. Hose/ Gun Cleaners used to ciaan the inside of hose and malarial passages of QUO. Usually used when abrasive materials are sprayed. Use (2) JGA-52 packings in place of JGA packing. Air Cap Tnt Kit KK for JGHV KK..o A for JGHV-1D1 33A KK t:SMP for JGHV-101-MiMP KK UP for JGHV MP The purpose of this test kit s to 11'18a5ure air cap atomizing air pressure at the center ak port ot the air cap. Used to confirm code COfT"Pance and as a dally quality control measure. ~ WARRANTY This product is covered by DeVilbiss' 1 Year Limited Warranty. See SB which is available upon request. SERVCE NOTES For a complete guide on air spray equipment, order free SB Worldwide Sales & Service- DeVLBSS NDUSTRAL SPRAY EQUPMENT DeVilbiss has authorized distributors throughout the world. For equipment, parts and service, check the Yellow Pages under"spray Equipment." FOR TECHNCAL ASSSTANCE, CALL TOLL FREE (U.S.A. ONLY). DeVilbiss ndustria! Spray Equipment 3195 Printed in U.S.A.