EXL-620G HIGH VOLUME LOW PRESSURE GRAVITY
Contents
1. Air cap covered by U S A Patent No 6 293 476 JGA 4035 Packing Replacement Instruc tions Needle i Packing Packing Nut 3 pieces Gun Body 1 Remove adjusting knob and needle spring from gun 2 Partially withdraw needle from gun body 3 Loosen packing nut and remove 4 Remove old packing 5 Assemble packing nut to needle 6 Assemble packing in order shown to needle 7 Insert needle all the way into gun body seating in tip 8 Install needle spring and adjusting knob 9 Thread packing nut into gun body 10 Tighten packing nut in equal increments no more than 1 6 turn at a time 11 After each adjustment pull needle open and observe needle closure 12 In needle snaps shut continue adjusting nut until there is evidence of needle bind or slow closing 13 Back off packing nut 1 12 turn to the point where needle snaps shut Packing nut must remain tight enough to prevent loosening by hand 14 Pull needle several times to verify needle snaps shut and check packing nut for looseness Pry here if necessary Chart 1 No on Air Cap Air Cap With Ring Order Ref No 4 2000 GTI 407 2000 Chart 2 Fluid teo m pmm 1 8 2 2 2000 Millennium Air Cap Inlet Pressure At handle of gun Ean fully open GTI 33 Baffle Seal Replacement 1 Remove Fluid Tip 5 2 Remove Baffle 6 3 Remove Seal 7 from baffle NOTE The seal is designed to be a tig2. adjusting screw enough Fluid too heavy for gravity feed Thin material and or change to larger tip size Paint bubbles in cup Fluid tip not tight Tighten tip to 12 15 ft lbs Fluid leaking or dripping from Cup lid loose Push in or tighten lid cup lid Dirty threads on cup or lid Clean Cracked cup or lid Replace cup and lid Starved spray pattern Inadequate material flow Back fluid adjusting screw out to first thread or change to larger tip size Low atomization air pressure Increase air pressure and rebalance gun Excessive overspray Too much atomization air pressure Reduce pressure Gun too far from work surface Adjust to proper distance Improper stroking arcing gun motion too Move at moderate pace parallel to work fast surface Excessive fog Too much or too fast drying thinner Remix properly Too much atomization air pressure Reduce pressure Dry spray Air pressure too high Reduce air pressure Gun tip too far from work surface Adjust to proper distance Gun motion too fast Slow down Gun out of adjustment Adjust Fluid leaking from packing nut Packing nut loose Tighten do not bind needle Packing worn or dry Replace or lubricate Packing nut too tight Adjust Dry packing Lubricate Fluid tip or needle worn or damaged Replace tip and needle Fluid leaking or dripping from front of gun Foreign matter in tip Clean Fluid needle spring broken Replace Wrong size needle or tip Replace Most common probl
3. for a fine burr on the edge of the fluid tip Remove with 600 wet or dry sand paper Check for dried paint just inside the opening remove by washing with solvent Remedies for the top heavy bottom heavy right heavy and left heavy patterns Heavy center pattern Fluid flow too high for atomization air Balance air pressure and fluid flow Increase spray pattern width with spreader adjustment valve Material flow exceeds air cap s capacity Thin or lower fluid flow Spreader adjustment valve set too low Adjust Atomizing pressure too low Increase pressure Material too thick Thin to proper consistency Split spray pattern Atomization air pressure too high Reduce at transformer or gun Fluid flow too low Increase fluid flow increases gun handling Spreader adjusting valve set too high speed Adjust Jerky or fluttering spray Loose or damaged fluid tip seat Tighten or replace Baffle seal installed incorrectly Install per directions Material level too low Refill if Container tipped too far Hold more upright Obstruction in fluid passage Backflush with solvent Dry or loose fluid needle packing nut Lubricate or tighten Unable to get round spray Spreader adjustment screw not seating Clean or replace properly Air cap retaining ring loose Tighten Will not spray No air pressure at gun Check air supply and air lines blow out gun air passages Fluid needle adjusting screw not open Open fluid needle
4. K5 192219 37 26 Air Inlet Nipple 1 4 NPS M Torque to 15 ft lbs Use medium strength thread sealant i e Devcon 2242 Blue or equal on threads e es J el 31 Gp 30 ee Description Air Valve Body U Cup Seal Washer Snap Ring Air Valve Assembly Air Inlet Nipple 1 4 NPS M Trigger Stud Screw Trigger Stud Stud and Screw Kit Includes 3 Studs amp 5 Screws Trigger Trigger Stud Screw Kit 1 each Cup Gasket Blue Kit of 5 Retaining Clip Seal Pin Clip Seal amp Pin Kit 5 each Gun Holder Coated n e KK 5058 2 Gun Repair Kit includes a quantity of necessary parts Sufixes K5 K10 designate kits of multiple parts Example JGA 4035 K5 is a kit of 5 packings DEVILBISS SB 2 202 H 11 2014 TROUBLESHOOTING CONDITION CAUSE CORRECTION bottom pattern Obstruction on top or bottom of fluid tip Heavy top or Horn holes plugged Ream with non metallic point Cap and or tip seat dirty Heavy right or left Left or right side horn holes plugged Clean Ream with non metallic point side pattern Dirt on left or right side of fluid tip Clean Determine if the obstruction is on the air cap or the fluid tip Do this by making a test spray pattern Then rotate the cap one half turn and spray another pattern If the defect is inverted obstruction is on the air cap Clean the air cap as previously instructed If the defect is not inverted it is on the fluid tip Check
5. SERVICE MANUAL EXL 620G HIGH VOLUME LOW PRESSURE GRAVITY FEED SPRAY GUNS IMPORTANT Before using this equipment read all safety precautions and instructions Keep for future use DESCRIPTION The compliant high volume low pressure gravity feed EXL guns are designed to ap ply a wide variety of finishing materials These guns were manufactured to provide a maximum transfer efficiency by limiting air cap pressure to 10 psi complies with rules issued by SCAQMD and other air quality authorities These guns will produce approximately 10 psi air cap pressure at 30 psi gun inlet pressure Air cap test kits are available see Accessories which can be utilized to set the exact air cap pressure Air consumption for the EXL 620G 2000 cap is 15 5 SCFM at 10 psi air cap presssure This gun should not be used with chlorinated solvent materials Halogenated hydrocarbon solvents for example methylene chloride and 1 1 1 Trichloroethane are not chemically compatible with the aluminum that might be used in many system components The chemical reaction caused by these solvents reacting with aluminum can become violent and lead to equipment explosion See page 2 for potential hazards Important This gun may be used with most common coating and finishing materials It is designed for use with mildly corrosive and non abrasive materials If used with other high corrosive or abrasive materials it must be expected that frequent an
6. ble contact your material supplier Operators should be given adequate training in the safe use and maintenance of the equipment in accordance with the requirements of NFPA 33 Chapter 15 Users must comply with all local and national codes of practice and insurance company requirements governing ventilation fire precautions operation maintenance and housekeeping These are OSHA Sections 1910 94 and 1910 107 and NFPA 33 Pain tingling or numbness in the shoulder forearm wrist hands or fingers especially during the night may be early symptoms of a CTD Do not ignore them Should you experience any such symptoms see a physician immediately Other early symptoms may include vague discomfort in the hand loss of manual dexterity and nonspecific pain in the arm Ignoring early symptoms and continued repetitive use of the arm wrist and hand can lead to serious disability Risk is reduced by avoiding or lessening factors 1 7 DEVILBISS 2 8 SB 2 202 H 11 2014 To clean fluid passages remove excess material from cup then flush with a suitable solvent Wipe gun exterior with a solvent dampenedcloth Never completely immerse in solvent as this is detrimental to the lubri cants and packings NOTE When replacing the fluid tip or fluid needle replace both at the same time Using worn parts can cause fluid leakage See Chart 2 Also replace the needle packing at this time Lightly lubricate the threads of the f
7. d temperatures w o o pe CTD s can also be caused by such activities as sewing golf tennis and bowling to name a few PROP 65 WARNING CA PROP WARNING This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm SAFEGUARDS Adequate exhaust must be provided to keep air free of accumulations of flammable vapors Smoking must never be allowed in the spray area Fire extinguishing equipment must be present in the spray area Wear eye protection 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 pre scribed by an industrial hygienst or safety expert and be NIOSH approved Due to the aluminum passageways in these guns they must not be used with these solvents Aluminum is also widely used in other spray application equipment such as material pumps regu lators valves and cups Check all equipment items before use and make sure they can also be used safely with these solvents Read the label or data sheet for the material you intend to spray If in doubt as to whether or not a coating or cleaning material is compati
8. d thor ough cleaning will be required and the necessity for replacement of parts will be increased INSTALLATION For maximum transfer efficiency do not use more pressure than is necessary to atomize the material being applied 1 Connectthe gun to a clean moisture and oil free air supply using a hose size of at least 5 16 I D hose Do not use 1 4 I D hose 25 x 1 4 hose at 18 CFM has a pressure loss of 25 psi 25 x 5 16 hose at 18 CFM has a pressure loss of 8 psi NOTE Depending on hose length larger I D hose may be required Install an HAV 501 air gauge atthe gun handle and air cap test kit over tip When gun is triggered on adjust regulated pressure to desired setting to pro vide a maximum of 10 psi at the air cap Do not use more pressure than is necessary to atomize the material being applied Excess pressure will create additional overspray and reduce transfer efficiency NOTE If quick connects are required use only high flow quick connects approved for HVLP use such as DeVilbiss HC 4419 and HC 4699 Other types will not flow enough air for proper gun operation NOTE If an air adjusting valve is used atthe gun inlet use DeVilbiss Model HAV 500 or HAV 501 Some competitive adjusting valves have significant pressure drop that can adversely affect spray performance Models HAV 500 and HAV 501 have minimal pressure drop which is important for HVLP spraying 2 Attach the gravity feed cup to t
9. em SB 2 202 H 11 2014 5 8 DEVILBISS TROUBLESHOOTING continued CONDITION CAUSE CORRECTION Fluid dripping or leaking from Cup loose on gun Tighten bottom of cup Cup gasket worn or missing below cup Replace cup gasket Cup threads dirty Clean Runs and sags Too much material flow Adjust gun or reduce fluid flow Material too thin Mix properly or apply light coats Gun tilted on an angle or gun Hold gun at right angle to work and motion too slow adapt to proper gun technique Thin sandy coarse finish drying Gun too far from surface Check distance Normally approx 8 before it flows out Too much air pressure Reduce air pressure and check spray pattern Improper thinner being used Follow paint manufacturer s mixing instrs Thick dimpled finish orange peel Gun too close to surface Check distance Normally approx 8 Too much material coarsely atomized Air pressure too low Increase air pressure or reduce fluid flow Improper thinner being used Follow paint manufacturer s mixing instrs Material not properly mixed Surface rough oily dirty Properly clean and prepare DeEVILBISS 6 8 SB 2 202 H 11 2014 ACCESSORIES GFC 501 Acetal 20 Oz Cup GFC 502 Aluminum 1 Liter Cup Gravity Feed Cups These gravity feed cups are designed to be used with EXL FLG GFG GFHV or GTI gravity feed spray guns GTI 5033 2000 Air Cap Test Kit The purpose of this test kit is to measure air cap atom
10. he material inlet NOTE Protective coating and rust inhibi tors have been used to keep the gun in good condition prior to shipment Before using the gun flush it with solvents so that these materials will be removed from fluid passages DEWILBISS OPERATION Mix prepare and strain the material to be sprayed according tothe paint maufacturer s instructions Strain material through a 60 or 90 mesh screen 1 Ifused install paint linerinto cup See instructions included with cup 2 Fillthe gravity feed cup with the mate rial Do not overfill Make sure that the cup lid vent hole is clear 3 Open the spreader adjustment valve 10 Fan by turning the valve stem counterclockwise 4 Close the fluid needle adjusting screw 17 by turning clockwise 5 Turn on air supply and set gun inlet pressure to lowest recommended pres sure for material being sprayed Best atomization will occur with 10 psig air cap pressure However some materi als can be sprayed at lower pressures improving transfer efficiency 6 Spray a test area by turning fluid needle adjusting screw 17 counterclockwise until a full coat is obtained If the finish is too sandy and dry the material flow may be too low for the atomization air pressure being used If the finish sags there is too much material flowing for the atomization air pressure being used Both of the above can be corrected by increasing or decreasing the atomizat
11. ht fit on the baffle The seal should be able to be removed using your fingers If you are unable to re move the seal using your fingers insert a small screwdriver between the outer lip and the back of the baffle and pry the seal off ANGLED SIDE SEAL THICK SIDE BAFFLE ee a a a aa aa a a a a 4 Assemble seal to baffle with angled side up as shown above NOTE The seal should be a tight fit on the baffle If it is a loose fit on the baffle assure that it is assembled with the angled side up 5 Install baffle on gun 6 Install fluid tip 5 and tighten to 15 20 ft lbs SB 2 202 H 11 2014 3 8 DEVILBISS PARTS LIST Replacement Part No JGA 156 K10 GTI 3 See Chart 1 See Chart 2 GTI 425 GTI 33 K5 JGA 4035 K5 34411 122 K10 GTI 404 GTI 413 JGS 72 K10 MBD 19 K10 GTI 414 KK 5059 Fluid Tip Torque to 15 20 ft lbs Description Air Cap Spring Clip Kit of 10 Air Cap Retaining Ring Air Cap amp Retaining Ring Fluid Tip Baffle Assembly Baffle Seal Kit of 5 Packing Kit of 5 Packing Nut Spreader Valve Fluid Needle Gasket Kit PTFE Kit of 10 Body Bushing Fluid Needle Spring Spring Pad Spring and Pad Kit of 10 Needle Adjusting Screw Bushing Spring Pad and Knob Kit Air Valve Spring Air Valve N m u u a _ _ Replacement Part No JGS 449 1 P MB 51 JGS 478 JGS 477 1 KGP 13 K5 GTI 428
12. ion air pressure or the material flow Pattern width can be altered by turning spreader adjust ment valve 10 either clockwise to de crease the width or counterclockwise to increase the width See Spray Gun Guide SB 2 001 latest revision for details concerning setup of spray guns PREVENTIVE MAINTENANCE To clean air cap and fluid tip brush exterior with a stiff bristle brush If necessary to clean cap holes use a broom straw or toothpick if possible If a wire or hard instrument is used extreme care must be usedto prevent scratch ing or burring of the holes which will cause a distorted spray pattern SB 2 202 H 11 2014 1 8 DEVILBISS SAFETY PRECAUTIONS This manual contains information that is important for you to know and understand This information relates to USER SAFETY and PREVENTING EQUIPMENT PROBLEMS To help you recognize this information we use the following symbols Please pay particular attention to these sections Important safety information A hazard that may cause serious injury or loss CAUTION NOTE Important information that tells how to prevent damage to equipment or how to avoid a situation that may cause Information that you should pay special attention to of life minor injury Explosion Hazard Incompatible Materials General Safety Cumulative Trauma Disorders CTD s CTD s or musculoskeletal disorders involve damage to the hands wrists elbows shou
13. izing air pressure at the center air port of the air cap Used to confirm code compliance and as a daily quality control measure Spray Gun Lube SSL 10 K12 2 oz bottle Compatible with all paint materials contains no silicone or petroleum distillates to contaminate paint MSDS Sheet available upon request HAV 500 OR HAV 501 Adjusting Valve HAV 501 SHOWN Cleaning Brushes 42884 214 K5 3 8 42884 215 K10 5 8 HAV 500 does not have pressure gauge Use to control air usage at gun These brushes are helpful in cleaning threads and recesses of gun body Industrial Quick Connects for HVLP Guns Air os M gt a NI L L S HC 4720 474 NPTIF HC 4719 HC 1166 1 4 NPT M 1 4 NPT M HC 4419 1 4 NPS F Contains all neces sary tip hose and nut sizes used on or with gun JGA 156 K10 Spring Clips 29 3100 K6 Scrubs Hand Cleaner Towels Joins any single piece DeVilbiss air cap with latest version MBC 368 MSA 1 or GTI 3 retaining rings Helps prevent parts loss and provides easier assembly Scrubs are a pre moistened hand cleaner towel for painters body men and mechanics that go where you go and no water is needed OMX 70 K48 Paint Cup Liner Kit Allows quick amp easy clean up Consists of 1 Piercing Tool 48 Disposable Liners 48 Drain Bushings Paint Spray Respirators 40 141 Sm 40 128 Med 40 143 Lg NIOSH Certified for respiratory protection in at
14. lders neck and back Carpal tunnel syndrome and tendonitis such as tennis elbow or rotator cuff syndrome are examples of CTD s The following hazards may occur during the normal use of this equipment Please read the following chart before using this equipment HAZARD CAUSE Solvent and coatings can be highly flammable or combustible especially when sprayed During use and while cleaning and flushing solvents can be forcefully expelled from fluid and air passages Some solvents can cause eye injury 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 are not chemically compatible with the aluminum that might be used in many system components The chemical reaction caused by these solvents reacting with aluminum can become violent and lead to an equipment explosion Improper operation or maintenance of equipment Use of hand tools may cause cumulative trauma disorders CTD s CTD s when using hand tools tend to affect the upper extremities Factors which may increase the risk of developing a CTD include 1 High frequency of the activity Excessive force such as gripping pinching or pressing with the hands and fingers Extreme or awkward finger wrist or arm positions Excessive duration of the activity Tool vibration Repeated pressure on a body part Working in col
15. luid tip before reas sembling Torque to 15 20 ft Ibs Do not overtighten the fluid tip CAUTION To prevent damage to fluid tip 5 or fluid needle 10 be sure to either 1 pull the trigger and hold while tightening or loosening the fluid tip or 2 remove fluid needle adjusting screw 16 to relieve spring pressure against needle collar SPRAY GUN LUBRICATION Daily apply a drop of SSL 10 spray gun lube at trigger bearing stud 28 and the stem of air valve 20 where it enters air valve assembly The shank of fluid needle 11 where it enters packing nut 9 should also be oiled Fluid needle packing 8 should be lubricated periodically Make sure baffle 6 and retaining ring 3 threads are clean and free of foreign matter Before assembling retaining ring to baffle clean the threads thoroughly then add two drops of SSL 10 spray gun lube to threads Fluid needle spring 14 and air valve spring 19 should be coated with a very light grease making sure that any excess grease will not clog the air passages For best results lubri cate the points indicated daily Not for air tools or high RPM equipment Trigger Points Packing Adjusting Knobs Baffle Threads Air Valve Cartridge moO W gt PARTS REPLACEMENT Figure 1 Air Cap P Air Cap No No XXX Maximum air pressure required to assure compliance of 10 PSI Max Cap Pressure this reading must be taken at the spray gun handle inlet fitting
16. mospheres not immediately dangerous to life SB 2 202 H 11 2014 7 8 DEVILBISS WARRANTY POLICY DeVilbiss products are covered by Finishing Brands one year materials and workmanship limited warranty The use of any parts or accessories from a source other than Finishing Brands will void all warranties For specific warranty information please contact the closest Finishing Brands location listed below Finishing Brands reserves the right to modify equipment specifications without prior notice DeVilbiss Ransburg BGK and Binks are registered trademarks of Finishing Brands 2014 Finishing Brands All rights reserved DEVILBISS USA Canada www devilbiss com info finishingbrands com Tel 1 800 992 4657 Fax 1 888 246 5732 United Kingdom www finishingbrands eu info finishingbrands eu Tel 44 0 1202 571 111 Fax 44 0 1202 573 488 China www finishingbrands com cn mkt finishingbrands com cn Tel 8621 3373 0108 Fax 8621 3373 0308 Mexico www finishingbrands com mx sales finishingbrands com mx Tel 011 52 55 5321 2300 Fax 011 52 55 5310 4790 France www finishingbrands eu info finishingbrands eu Tel 33 0 475 75 27 00 Fax 33 0 475 75 27 59 Japan www ransburg co jp binks devilbiss ransburg co jp Tel 081 45 785 6421 Fax 081 45 785 6517 DEVILBISS DeVilbiss is part of Finishing Brands a global leader in innovative spray finishing technologies For technical assistance or to l
17. ocate an authorized distributor contact one of our international sales and customer support locations below Brazil www devilbiss com br sales devilbiss com br Tel 55 11 5641 2776 Fax 55 11 5641 1256 Germany www finishingbrands eu info finishingbrands eu Tel 49 0 6074 403 1 Fax 49 0 6074 403 281 Australia www finishingbrands com au Sales finishingbrands com au Tel 61 0 2 8525 7555 Fax 61 0 2 8525 7500 Finishing en SB 2 202 H 11 2014
Download Pdf Manuals
Related Search