Service bulletin
Contents
1. DEVILBISS AUTOMOTIVE REFINISHING C Ex 12GX Technical Bulletin PRO range of Gravity Spray Guns for Primer Basecoat and Clearcoat OS PRI tS Table of Contents Topic EC Declaration of Conformity Part Numbers Operational Description Kit contents Construction Features Materials of Construction Specifications amp Technical Data Safety Precautions Parts List Exploded parts View Installation Operation Preventive Maintenance amp Cleaning Parts Replacement Maintenance A Servicing Air Valve B Replacing Air Valve C Needle Packing Spreader Valve Assembly D Spray Head Seal E Chart 1 Air Caps Chart 2 Fluid Nozzles amp Fluid Needles Troubleshooting Possible Problems in Operation Accessories Warranty Page 2013 Finishing Brands UK Ltd EC Declaration of Conformity We Finishing Brands UK Limited Ringwood Rd Bournemouth Dorset BH11 9LH UK as the manufacturer of the Spray gun model GTi PRO and PRi PRO declare under our sole responsibility that the equipment to which this document relates is in conformity with the following standards or other normative documents BS EN 292 1 PARTS 1 amp 2 1991 BS EN 1953 1999 and thereby conform to the protection requirements of Council Directive 98 37 EEC relating to Machinery Safety Directive and EN 13463 1 2001 council Directive 94 9 EC relating to Equipment and Protective Systems intended for use in Potentially Explosive Atmospheres pr2. 39 Trigger Stud EE EPY nial Ee Kit Airinit O OREN a Colour ID Ring Kit 4 SN 26 K4 Er Colours Airflow Valve PRO 411 K En Le ame 2 re Car we Le Lumens o Las vavesem 1 CICR si oyo eros Ca Jenna Pe a fre pese 56 Air valve Service Tool 57 58 SPN 8 K2 Stud and Screw kit SN 405 K5 SERVICE PARTS Spray Gun repair kit includes items marked Seal and Pin Kit kit of 5 items 20 22 and 24 For accessories see page 16 Torx Key PRO 415 1 GT1 428 K5 2013 Finishing Brands UK Ltd PATENT GB2417544 2013 Finishing Brands UK Ltd 7 INSTALLATION For maximum transfer efficiency do not use more pressure than is necessary to atomise the material being applied NOTE when using the H1 HVLP setup do not exceed 2 bar inlet pressure 1 Connect the gun to a clean moisture and oil free air supply using a conductive hose of at least 8 mm I D NOTE Depending on hose length larger I D hose may be required Install an air gauge at the gun handle When gun is triggered on adjust regulated pressure to 2 0 bar Do not use more pressure than is necessary to atomise the material being applied Excess pressure will create additional overspray and reduce transfer efficiency NOTE If quick connect couplings are required use only high flow quick connects approved for HVLP use Other types will not flow enough air for correct gun operation NOTE If an air adjusting valve
3. immediately after cleaning is completed Prolonged exposure to cleaning solutions can cause damage to the product Noise Levels The A weighted sound level of soray guns may exceed 85 dB A depending on the set up being used Details of actual noise levels are available on request It is recommended that ear protection is worn at all times when spraying Operating Spray equipment using high pressures may be subject to recoil forces Under certain circumstances such forces could result in repetitive strain injury to the operator 2013 Finishing Brands UK Ltd 5 PARTS LIST DESCRIPTION PART NO s wo EEE Air Cap Retaining Clip JGA 156 K5 EA See chart 1 Air Cap Retaining Ring amp ppRO 405 K Seals p13 BAr Spray Head Seal kitof SN 18 1 K2 EN EEEH Spray Head amp Seal Kit SN 17 1 K Body Bushing a l Le Body Bushing amp Seal SN 6 K ot il Fluid Needle Le 16 Needle Spring 17 e 7 ae ee 18 Fluid Adjusting Knob Fluid Adjusting Knob Knob EAL Adjusting Knob 20 Retaining Clip Clip 2 Spreader Valve Body ae Spreader Valve Seal 03 Spreader Valve i Adjusting Knob Spreader Valve Pin Er Spreader Valve PRO 402 K i Assembly Needle Packing a LI met zs Peano J o Packing Spring amp EPR Packing Nut Kit AR Air Valve Cage a a il N FA DESCRIPTION PART NO 82 _ Ai Valve Poppet 33 Ai Valve Spring 1 oa Airvawe songra 1 ae TO D SR T20 TORX w o
4. is used at the gun inlet use DGIPRO 502 BAR Digital Gauge Some competitive adjusting valves have significant pressure drop that can adversely affect spray performance The DGIPRO Digital Gauge has minimal pressure drop which is important for HVLP spraying 2 Attach the gravity feed cup to the material inlet NOTE Before using the gun flush it with solvent to ensure that the fluid passages are clean OPERATION 1 Mix coating material to manufacturer s instructions and strain material 2 Fill the cup to no more than 20 mm from the top of the cup DO NOT OVERFILL 3 Attach Cup Lid 4 Turn fluid adjusting knob 18 clockwise to prevent fluid needle movement 5 Turn spreader valve adjusting knob 23 counter clockwise to fully open 6 Adjust inlet air pressure to 2 0 bar 7 Turn fluid adjusting knob counter clockwise until first thread shows 8 Test spray If the finish is too dry reduce airflow by reducing air inlet pressure 9 If finish is too wet reduce fluid flow by turning fluid adjusting knob 18 clockwise If atomisation is too coarse increase inlet air pressure If too fine reduce inlet pressure 10 The pattern size can be reduced by turning spreader valve knob 23 clockwise 11 Hold gun perpendicular to surface being sprayed Arcing or tilting may result in uneven coating 12 The recommended spray distance is 150 200 mm 13 Spray edges first Overlap each stroke a minimum of 75 Move gun a
5. needle Fluid dripping or leaking Cup loose on gun Tighten dauie aae Cup fluid inlet seat dirty Clean Too much material flow Turn fluid adjusting knob clockwise Runs and sags Material too thin Gun tilted on an angle or gun motion too slow or switch to smaller fluid nozzle and fluid needle size Mix correctly or apply light coats Hold gun at right angle to work and adapt to correct gun technique 2013 Finishing Brands UK Limited 15 ACCESSORIES DGi PRO Digital D Pressure DGIPRO 502 BAR 4 Gun Stand GFV 50 F Gauge i 600 cc Mixing Spanner 5 MC 1 K50 Cups pack of 50 10m x 8mm bore rubber air Torx driver SN 406 hs 2 fittings use Pack of four Cleaning Brush ATEN QD fittings MPV 463 Cleaning Brush 4900 5 1 K3 MPV 60 K3 Torx driver SPN 8 K2 WARRANTY This product is covered by Finishing Brands UK Limited one year warranty Finishing Brands UK Limited Ringwood Road Bournemouth BH11 9LH UK Tel No 01202 571111 Fax No 01202 581940 Website address http www finishingbrands eu Registered office Finishing Brands UK Limited 400 Capability Green Luton Bedfordshire Vat No GB 113 5531 50 16 2013 Finishing Brands UK Limited
6. or bottom of fluid Clean nozzle Cap and or nozzle seat dirty Clean Left or right side horn holes plugged Clean Ream with non metallic point a mn Dirt on left or right side of fluid Heavy right or i EN nozzle Clean left side D pattern Remedies for the top heavy bottom heavy right heavy and left heavy patterns 1 Determine if the obstruction is on the air cap or the fluid nozzle 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 Also check for dried paint just inside the cap centre hole opening remove by washing with solvent 2 If the defect is not inverted it is on the fluid nozzle Clean nozzle If problem persists renew nozzle Heavy A Spreader adjustment valve set too Turn out counter clockwise to centre Zam low achieve correct pattern pattern Atomising pressure too low Increase pressure Material too thick Thin to correct consistency Split spray Air pressure too high Reduce at regulator or gun handle pattern r Fluid adjusting knob turned in too Turn out counter clockwise to far achieve correct pattern Spreader adjusting valve set too Turn in clockwise to achieve high correct pattern Loose or damaged fluid nozzle seat Tighten or replace Loose or broken cup fluid nipple Tighten or replace cup Material level too low Refill Contain
7. 3 Finishing Brands UK Limited Parts Replacement Maintenance NEEDLE PACKING REPLACEMENT INSTRUCTIONS 13 Remove trigger using SPN 8 or TORX T20 driver See figs 25 amp 26 14 Remove fluid adjusting Knob and needle spring with spring pad from gun See figs 27 amp 28 15 Remove fluid needle from gun body See fig 29 16 Loosen and remove packing nut using SPN 8 Key ora straight blade screwdriver See figs 30 amp 31 17 Discard old packing and packing spring if replacing Clean packing if reusing Also clean packing spring and nut See fig 32 18 Re assemble the packing See fig 32 Assemble into gunbody by hand see fig 33 and then tighten See figs 30 and 31 19 Insert fluid needle all the way into gun body seating in fluid nozzle See fig 34 20 Insert needle spring spring pad and fluid adjusting knob See figs 28 amp 27 Reinstall trigger See figs 25 amp 26 21 Trigger gun fully and screw in fluid adjusting Knob until it stops Back it off 1 2 turn and gun will have full needle travel 22 Trigger gun several times to verify correct operation SPREADER VALVE ASSEMBLY REPLACEMENT MAINTENANCE The spreader valve assembly can be replaced if damaged Remove using SN 28 14 mm Spanner See figs 35 amp 36 The internal seal can be replaced and is included in the GTI PRO Gun Rebuild Kit 2013 Finishing Brands UK Limited 11 Parts Replacement Maintenance SPRAY HEAD S
8. EAL REPLACEMENT 1 Remove air cap and retaining ring See fig 37 2 Remove fluid adjusting knob spring and spring pad See figs 38 amp 39 Remove fluid needle from gun body See fig 40 4 Remove fluid nozzle using SN 28 10 mm ring Spanner and then remove the Front Plate See figs 41 42 amp 43 Remove Spray Head See fig 44 Clean Spray Head with a soft brush See fig 45 Remove Spray Head seal using a small screwdriver or pick See fig 46 8 Clean front of gun if required using a soft brush as well as the Spray Head fluid nozzle air cap and retaining ring See fig 47 9 Place a new Spray Head Seal onto the front of the gun making sure the flat on the seal is aligned with the flat in the gun See fig 48 10 Fit the Front Plate onto the Spray Head fit Spray Head to the Gunbody ensuring the flat on the underside of the Spray Head locates with the flat in the Gun Body Fit Fluid Nozzle Air Cap and Retaining Ring Torque the Fluid Nozzle to 18 20 nm Don t over torque the fluid nozzle See figs 44 43 42 41 and 37 11 Insert Fluid Needle all the way into the Gun Body seating in the Fluid Nozzle See fig 40 12 Reassemble Needle Spring Spring Pad and Fluid adjusting Knob See figs 39 amp 38 13 Trigger gun fully and screw in Fluid Adjusting Knob until it stops Back it off 1 2 turn and gun will have full needle travel 14 Trigger gun several times to verify correct operatio
9. atic charge by rubbing which if discharged to an earthed object could create an incendive spark and cause solvent vapours to ignite Only use a dampened cloth or antistatic wipes if manual cleaning is required within a hazardous area 2013 Finishing Brands UK Ltd Parts Replacement Maintenance AIR VALVE INSTRUCTIONS Servicing Air Valve Reasons to service air valve A Air valve not functioning correctly may need cleaning B Routine maintenance C Air leaks advise replacement see p10 1 Remove trigger using the tool supplied SPN 8 or TORX T20 key See fig 1 amp 2 2 Unscrew air valve using SN 28 14 mm spanner See fig 3 Remove air valve by gripping stem See fig 4 Remove spring with spring pad See fig 5 DO NOT REMOVE REAR SEAL 35 FROM GUN BODY See fig 6 6 DONOT REMOVE PLASTIC CAGE FROM AIR VALVE BODY AS THIS MAY DAMAGE THE CAGE See fig 7 7 CLEAN a Remove all paint build up See fig 8 b The 4 poppet holes must be clear See fig 9 c Stem must be free to float in poppet See fig 10 d Stem must slide through cage bore with slight resistance due to seal e Rear seal must look clean and in position in the bore See fig 6 f If any of the above cannot be rectified replace the air valve See Replacing Air Valve p10 8 Replace spring ensuring the end with the plastic bearing pad goes in first See fig 5 9 Insert air valve assembly into gun and carefully feed
10. drocarbons Static electricity can be generated by fluid and or air passing through hoses by the spraying process and by cleaning non conductive parts with cloths To prevent ignition sources from static discharges earth continuity must be maintained to the spray gun and other metallic equipment used It is essential to use conductive air and or fluid hoses gt gt amp Personal Protective Equipment Toxic vapours When sprayed certain materials may be poisonous create irritation or be otherwise harmful to health Always read all labels safety data sheets and follow any recommendations for the material before spraying If in doubt contact your material Supplier The use of respiratory protective equipment is recommended at all times The type of equipment must be compatible with the material being sprayed Always wear eye protection when spraying or cleaning the spray gun 9090 pO Gloves must be worn when spraying or cleaning the equipment raining Personnel should be given adequate training in the safe use of spraying equipment Misuse Never aim a spray gun at any part of the body Never exceed the maximum recommended safe working pressure for the equipment The fitting of non recommended or non original spares may create hazards Before cleaning or maintenance all pressure must be isolated and relieved from the equipment The product should be cleaned using a gun washing machine and should be removed and dried
11. er tipped too far Hold more upright Obstruction in fluid passage Back flush with solvent Loose fluid needle packing nut Tighten Damaged fluid needle packing Replace Paint bubbles in cup Fluid nozzle not tight Tighten to 18 20 nm 13 15 ft lbs Cup lid loose Push in or replace Fluid leaking or dripping from cup Dirty cup or lid Clean lid Cracked cup or lid Replace cup and lid 2013 Finishing Brands UK Limited Troubleshooting Possible Problems in Operation cont Wind fluid adjusting knob out or Inadequate material flow change to larger fluid nozzle size Starved spray pattern Clean lid and unblock vent Blocked vent in Cup lid Increase air pressure and rebalance gun Air pressure too enon Reduce air pressure Excessive overspray enon too far from work surface Adjust to correct distance Air pressure too high Reduce air pressure Adjust to correct distance Dena Gun too far from work surface Spray Slow down Gun motion too fast Eli iow too law Wind out needle adjusting screw or use larger nozzle size Boke enone Packing worn Replace packing nut Fluid nozzle or fluid needle worn or Replace fluid nozzle and fluid damaged needle Low atomisation air pressure Fluid leaking or dripping Foreign matter in fluid nozzle Clean from front of gun Fluid needle dirty or stuck in needle Clean packing Wrong size fluid needle or fluid Replace fluid nozzle and fluid nozzle
12. if used with such materials it must be expected that the need for cleaning and or replacement of parts will be increased If there is any doubt regarding the suitability of a specific material contact your DeVilbiss Distributor or DeVilbiss direct NOTE This gun is not to be used with halogenated hydrocarbon solvents or cleaning agents such as 1 1 1 Trichloroethane or methylene chloride These solvents can react with the aluminium components used in this gun and cup The reaction can become violent and lead to an equipment explosion 2013 Finishing Brands UK Ltd 3 Kit contents all models Construction Features i Fan Air Adjustment stepless regulation for fan Air Cap nickel plated brass for long durability to round spray Air Cap Retaining Ring allows easy rotation of air 14 Fluid Adjustment stepless regulation of fluid Cap volume Fluid Nozzle ideal for automotive topcoat systems he NASE PAN TEANO PONG GUN SERGE Interchangeable Colour ID System 4 coloured Fluid Needle grooved stem for easy removal rings supplied Fluid Inlet 3 8 BSP thread accepts DeVilbiss and Anodised forged aluminium gun body most other cup systems ergonomic good looking amp durable easy to Air Inlet universal thread accepts G 1 4 amp 1 4 NPS 500cc Acetal Cup easy clean anti static Self Adjusting Needle Packing for trouble free Cup Lid with Drip Free Vent avoid drips operation Air Valve design offers low pull force amp l
13. n 12 2013 Finishing Brands UK Limited Parts Replacement Maintenance Chart 1 Air Caps RECOMMENDED AIR FLOW PART No FOR MARKING ON INLET SPRAYGUN AIR CAP TECHNOLOGY AIR CAP PRESSURE L min 2 bar PRO 100 H1 K HVLP H1 GTi PRO PRO 100 T1 K TRANS TECH PRO 100 T2 K TRANS TECH PRi PRO PRIPRO 100 P1 K TRANS TECH NOTE When removing air cap from retaining ring don t remove the Slip Ring 2 or Retaining Ring Seal 5 from the Retaining Ring Damage to the parts may occur Slip ring and Retaining Ring seal are not available as replacements Simply wipe parts clean and reassemble with new or clean air cap Chart 2 Fluid Nozzle Range amp Fluid Needle GTi PRO PRO 300 K hs PRi PRO PRIPRO 310 K NOTE When replacing the fluid nozzle or fluid needle replace both at the same time Torque to 18 20 nm 13 15 ft lbs Don t over tighten the fluid nozzle Use SN 28 10mm Spanner supplied with the gun and check with a torque wrench IMPORTANT NOTE The GTi Pro and PRi PRO tips and aircaps ARE NOT INTERCHANGEABLE between the 2 models Any attempt to fit tips or caps onto the wrong Spray Gun may cause damage to the parts or the Spraygun body and invalidate the warranty 2013 Finishing Brands UK Limited 13 Troubleshooting Possible Problems in Operation CONDITION CAUSE CORRECTION Heavy top or 5 Horn holes plugged Clean Ream with non metallic bottom a point pattern d Obstruction on top
14. otection level Il 2 G X This product also complies with the requirements of the EPA guidelines PG6 34 Transfer efficiency certificates are available on request But D Smith General Manager 31 January 2013 Finishing Brands UK Limited reserves the right to modify equipment specification without prior notice Part Numbers The GTi Pro Sprayguns are available marked as or CILIE AVEY The Basecoat and Clearcoat marking system for easy gun identification for sorayers The ordering code for the GTIPRO Spray gun is e g GTIPRO T2C 13 where T2 T2 Aircap Alternatives are H1 T1 C Clearcoat Gun Alternative is B for basecoat 13 1 3 Nozzle Alternatives are 1 2 or 1 4 For the PRIPRO PLAZI ULIELRY Spray gun the ordering code is e g PRIPRO P1P 16 where P1 P1 Aircap P PRIMER Gun 16 1 6 Nozzle Alternatives 1 4 1 8 2 0 or 2 5 Operational Description This GTi PRo Spray Gun is a professional quality gun designed with both high volume low pressure HVLP technology or EPA compliant Trans Tech technology The PRI PRO Primer Spray Gun uses only Trans Tech technology HVLP Technology reduces overspray and limits air cap pressure to 0 7 bar 10 psi Trans Tech complies with EPA by obtaining transfer efficiency above 65 IMPORTANT These Sprayguns are suitable for use with both waterbased and solvent based coating materials These guns are not designed for use with highly corrosive and or abrasive materials and
15. over the spring and through the rear seal See fig 11 10 Tighten air valve assembly using fingers first and then tighten with SN 28 14mm Spanner See figs 12 amp 3 11 Replace trigger See figs 2 amp 1 12 If there is an air leak through the gun the air valve may need replacing See Replacing Air Valve 2013 Finishing Brands UK Ltd 9 Replacing Air Valve Reasons to replace air valve 10 11 A Air leak through the gun B Air valve not operating correctly Remove trigger using SPN 8 or TORX T20 key provided in the kit See figs 13 amp 14 Unscrew air valve using SN 28 14 mm Spanner See fig 15 Remove air valve by gripping the stem See fig 16 Remove spring with spring pad See fig 17 Hook out rear seal using Service Tool 56 See figs 18 amp 19 Clean air valve bores in gun body with the brush supplied in the kit Place new rear seal onto Service tool 56 grooves must fit in service tool form See fig 20 Push rear seal firmly into hole up to shoulder using Service tool See figs 21 amp 22 Insert new spring ensuring the end with the plastic bearing pad goes in first See fig 17 Insert air valve assembly into gun and carefully feed over the spring and through the rear seal See fig 23 Tighten air valve assembly using fingers first then tighten with SN 28 14 mm Spanner See figs 24 amp 15 12 Replace trigger See figs 14 amp 13 10 201
16. ow Trigger ergonomic for comfort pressure drop Trigger Stud amp Screw easy replacement design 18 Sue ree aoe O PWE ANE SONE gg JISP g borne applications Materials of Construction Gun Body Air Cap Fluid Nozzle Fluid Needle Fluid Inlet Trigger Stud Spray Head J a 6 7 o G Springs Clips Screws Stainless steel Seals Gaskets Solvent resistant Trigger Chrome plated steel Air Inlet Body Bushing Spreader Valve Body Air Valve Nut Air Cap Retaining Ring Knobs Seles GES Air Valve Assembly Stainless Steel HPDE Specifications amp Technical Data Air Supply Connection Universal 1 4 BSP and 1 4 NPS male Maximum Static Air Inlet Pressure P1 12 bar 175 psi Gun Air Inlet Pressure for HVLP H1 and Trans Tech T1 T2 and P1 with gun triggered aie Caled PSY Fluid Supply Connection 3 8 BSP Service Temperature 0 to 40 C 32 to 104 F Gun Weight gun only 585g with cup 768g 4 2013 Finishing Brands UK Ltd SAFETY WARNINGS Fire and explosion Solvents and coating materials can be highly flammable or combustible when sprayed ALWAYS refer to the coating material supplier s instructions and COSHH sheets before using this equipment Users must comply with all local and national codes of practice and insurance company requirements governing ventilation fire precautions operation and house keeping of working areas This equipment as supplied is NOT suitable for use with Halogenated Hy
17. t a constant speed 14 Always turn off air supply and relieve pressure when gun is not in use PREVENTIVE MAINTENANCE amp CLEANING To clean air cap and fluid nozzle 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 used to prevent scratching or burring of the holes which will cause a distorted spray pattern To clean fluid passages remove excess material from cup then flush with gun wash solution Wipe the gun exterior with a dampened cloth Never completely immerse in any solvent or cleaning solutions as this is detrimental to the lubricants and life of the spray gun NOTE When replacing the fluid nozzle or fluid needle replace both at the same time Using worn parts can cause fluid leakage See page 13 Chart 2 Also replace the needle packing at this time Torque the fluid nozzle to 18 20 nm Do not over tighten CAUTION To prevent damage to fluid nozzle 8 or fluid needle 15 be sure to either 1 pull the trigger and hold while tightening or loosening the fluid nozzle or 2 remove fluid adjusting knob 18 to relieve spring pressure against needle collar CAUTION IMPORTANT the Gravity cup is made from special anti static materials but it still important to avoid generating static charges The Cup must not be cleaned or rubbed with a dry cloth or paper It is possible to generate a st
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