Graco Inc.メーカー244399の使用説明書/サービス説明書
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For use in Class I, Div . I hazardous locations using Gr oup D spray materials. For use in Group II, Zone 1 areas using Gr oup IIA spra y materials. For Prof essional Use ONL Y . P art No. 244399, Series C See page 2 f or Model 244399 inf ormation. 100 psi (0.
Table of Contents 2 309291P T ab le of Contents T able of Conte nts . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Model Information . . . . . . . . . . . . . . . . . . . . . . . . . . 2 W arnings . . . . . . . . . . . . . . . . . . . . . . . .
Warnings 309291P 3 Wa r n i n g s W a rning Symbol This symbol alerts yo u to the possibility of serious injury or death if you do not follow th e instructions. Caution Symbol This symbol alerts you to the possibility of damage to or destruction of equipment if you do not fo llow the instruc- tions.
Warnings 4 309291P WA R N I N G Equipment Misuse Hazar d Equipment misuse can cause the equipm ent to rupture, malfu nction, or star t une xpectedly and result in a serious injur y . • This equipment is f or professional use only . • Read all man uals, tags, a nd labels bef ore operating the equipment.
Introduction 309291P 5 Intr oduction How the Electr ostatic Spray Gun Wo r k s The air hose supplies air to the spray gun. Part of the air operates the tur bine and the rest of the air atomizes th e fluid being sprayed.
Installation 6 309291P Installation Install the System F IG . 2. shows a typical electrostat ic air spray system. It is not an actual system des ign. For assistance in designing a system t o suit your pa rticular needs, co ntact your Graco distributor.
Installation 309291P 7 Fig. 2. Typica l Installatio n Key I O ES TI1531a A B* C* D *E F G H J* K L M N O P Q* *R S T U* V W C G ES ON/OFF valv e: I is ON, 0 is OFF The air supply to the gun must be electri- cally interlocked with the ventilators to pre- vent the power supply from operating without ventilating fans on.
Installation 8 309291P Connect the Air Line 1. Connect the G raco Grounded Air Supply Hose (R) between the air supply line and the gun's a ir inlet (V). The gun a ir inlet fitting has a left-hand thread . Connect the air supply hose g round wire (Q) to a true ear th g round.
Installation 309291P 9 Select a Fluid Nozzle and Air Cap The gun is supplied with Part No. 197266 Nozzle and 24A376 Air Cap. If yo u require a differen t size, refer to Table 1 and Tabl e 2 , and instruction ma nual 309419, or consult with your Graco distrib utor.
Installation 10 309291P Connect the Fluid Line 1. Bef ore connect ing the fluid line (N), b lo w it out with air and flush it with solvent. Use solv ent which is compatible with the fluid to be spra yed. 2. Install a fluid regulator (M) on the fluid line to co ntrol fluid pressure to t he gun.
Installation 309291P 11 Gr ounding The following are minimum gr ounding requirements for a basic elect rostatic system. Your system may include other equipment o r objects which must be grounded. Check your local electrical co de for detailed gr ounding instructions.
Installation 12 309291P Chec k Electrical Gr ounding 1. Ha ve a qua lified electrician check the electrical groundin g continuity of the spr a y gun and ai r hose. 2. T ur n the ES ON/OFF valv e OFF . 3. T ur n off the air and fluid supp ly to the gun.
Installation 309291P 13 Chec k Fluid Resistivity Graco Part No. 72288 6 Resistance Meter and 722860 Probe are available as acces sories to check that the resistivity of the fluid b eing sprayed meets the require- ments of an electrostatic air spray system.
Operation 14 309291P Operation INSTRUCTIONS Refer to the gun operation manual (supplied) for Se tup, Shutdown, and Daily Care procedures..
Maintenance 309291P 15 Maintenance Flush the Spra y Gun Flush the gun bef ore changing colors, at the end of the day, before storing , and before repairin g the gun. 1. T ur n the ES ON/OFF valv e OFF . 2. Relie ve the pressu re. 3. Change t he fluid so urce to solv ent, or disconnect the fluid line and connect a solv ent supply line to the gun.
Maintenance 16 309291P 6. Shut off or disconnect the solv ent line. 7. Hang the gun f rom its hook, with th e nozzle pointing down. 8. When ready to spr a y again, reconnect the fl uid sup- ply line. F ollow the Setup procedur e in the Opera- tion Manual.
Electrical Tests 309291P 17 Electrical T ests Electrical component s inside the gun affect perfo rmance and safety. The fo llowing procedures test the condit ion of the power supply (18) and ele ctrode (29), and elect ri- cal continuity between compon ents.
Electrical Tests 18 309291P T est P ower Suppl y Resistance 1. Remo v e the pow er supply (18) , page 29. 2. Remo ve the turbine alternator (19) fr om the pow er supply , page 30. 3. Measure re sistance from th e pow er supply's ground strips (EE) to the spring (18b).
Electrical Tests 309291P 19 T est Electr ode Resistance 1. Insert a conductive rod (B) into the gun barr el (remo ved f or the pow er supply test) an d against the metal conta ct (C) in the fron t of the bar rel. 2. Measure the resistance betwe en the conductiv e rod (B) and the elec trode (29).
Troubleshooting 20 309291P T r oubleshooting Chec k all possible r emedies in the T roub leshooting Char t bef ore disa ssembling t he gun. Spra y P attern T roub leshooting Some spra y patter n prob lems are caused b y the improper balance between air and fluid.
Troubleshooting 309291P 21 Gun Operation T roubleshooting Prob lem Cause Solution Excessive spr a y f og. Atomizing air pressure too high. Close restrictor v alv e some, or decrease air pressur e as low as pos- sible; minimum 40 psi (0.28 M P a, 2.8 bar) needed at gun f or full volt age.
Troubleshooting 22 309291P Electrical T r oubleshooting * ES indicator light is off when the gun is trigg ered. Prob lem Cause Solution P oor wrap . ES ON/OFF v alv e OFF (0).* T urn ON (I). Gun air pressu re too low . Chec k air pressure to gu n; minimum 40 psi (0.
Repair 309291P 23 Repair Pressure Relief Pr ocedure 1. T ur n the ES ON/OFF valv e OFF . 2. T ur n off the air b leed v alv es to the fluid sour ce and to the gun. 3. T r igger the gun int o a grounded metal w aste con- tainer to r elie v e the fluid pressure.
Repair 24 309291P Prepare the Gun f or Ser vice • Check all possib le remedies in T roub leshooting bef ore disasse mbling t he gun. • Use a vise with padded ja ws to pre v ent damage to plastic par ts . • Lubricate the pow er supply o-ring (18a) and some pac king rod part s (26) with dielectric grease ( 40), as specified in the te xt.
Repair 309291P 25 Air Cap/Nozzle Replacement 1. Prepare gun f or ser vice, page 24 . 2. Remove the retaining r ing (27) an d air cap (9). Se e F IG . 9.. 3. P oint gun up and squeez e trigger while remo ving the fluid nozzle (7) assembly with th e multi-tool ( 37).
Repair 26 309291P Electr ode Replacement 1. Prepare the gun f or service, page 24. 2. Remo ve the air cap and nozzle, page 25. 3. Unscre w the electrode (29) wit h the multi-tool (3 7). Hold the pac king rod end (26h) to pre vent it from tur ning. See F IG .
Repair 309291P 27 Fluid P acking Remo v al 1. Prepare the gu n f or ser vice, page 24. 2. Remo ve the air cap and fluid nozzle , page 25. 3. Remove the electrode, page 26. 4. Remo ve the trigger scre ws (8) and trigger (30). See F IG . 11. 5. Remove the packing rod (26), using th e multi-tool (37).
Repair 28 309291P P acking Rod Repair You may replace the packing rod as individ ual parts or as an asse mbly. The assembly is pr e-adjusted at the factory. Bef ore installing the fluid pack ing rod into the gun barrel, mak e sure the internal surfa ces of the barrel are clea n.
Repair 309291P 29 Barrel Remo v al 1. Prepare the gu n f or ser vice, page 24. 2. Carefully loosen th e nut (32) fro m the brac k et fluid fitting (13) . Pull the tube (14) out of the fit ting. Mak e sure both f err ules and the n ut sta y with the tube .
Repair 30 309291P P ower Suppl y Remo v al and Replacement • Inspect the gun handle power supply cavit y f or dir t or moisture. Clean w ith a clean, dr y rag. • Do not e xpose gask et (10) to solvent s. 1. Prepare g un f or service, page 24. 2. Remo ve the barrel (16), pag e 29.
Repair 309291P 31 T urbine Alternator Remov al and Replacement Replace turbine alte r nator bearings after 2000 hours of operat ion. Order P ar t No . 223688 Bearing Kit. 1. Prepare gun f or ser vice, page 24 . 2. Remo ve the pow er supply/alternator assemb ly , page 30.
Repair 32 309291P F an Air Adjustment V alve Repair 1. Prepare the gun f or service, page 24. 2. Place a wrench on the fla ts of the v alv e assembly (20) and unscre w it from the handle ( 17). Y ou may replace the valv e as an assembly (go to step 9) or as individual par ts (steps 3-9).
Repair 309291P 33 Fluid Adjustment V a lve Repair 1. Prepare the gu n f or ser vice, page 24. 2. Remov e the fluid adjustment valve (25). It can only be replaced as a comp lete assembly . See F IG . 17 .. 3. Scre w the v alv e (25) in to the gun h andle.
Repair 34 309291P Atomizing Air Restrictor V alve Remo v al and Replacement 1. Prepare the gun f or service, page 24. 2. Remov e the atomizing air r estrictor va lve (23). Inspect the o-ring (23c*). Rep lace if necessar y . See F IG . 19.. 3. Install a new atomizing air restr ictor valv e (23), or disassemb le and replace parts individually .
Repair 309291P 35 ES ON/OFF V alve Repair 1. Prepare the gu n f or ser vice, page 24. 2. Loosen the scr ew (48). Remo v e the v alv e. 3. Lubricate the o-r ings (22a* and 22b*) with non-sili- cone grease, P ar t No . 11126 5. Do not ov er-lubr i- cate.
Parts 36 309291P Pa r t s Part No. 244399 20 kV Electrostatic Gun, Series C 27 9 7 26 16 11 18 19 *10 17 28 20 22 25 15 21*** 23b 35 13 24 38 8 *6 ti1266a I O ES 7a 7b 11 *18a 18b 23a 23c* 23d 24a* 27a* 29 30 37 36 39 47 4 See page 37 for detail vie ws of the alternator (1 9), fan adjustment valve (20), ES ON/OFF valve (22), and packing rod (26) .
Parts 309291P 37 TI1488A TI1497a TI1487A TI1481a 22a* 22b* 22c 22d 22e 22f 22g 20a 20b* 20c 20d 26a** **26b 26d** 26c** 26e 26f 26g** 26h 19a* 19b 19b 19c Ref.
Parts 38 309291P * Included in Air Seal Repair Kit 244781. ** Included in Fluid Seal Repair Kit 244 911. *** Rubber seal is not r emov ab le. **** Optional repla cement Electrode Needle 2770 07 is av ailable f or abrasive materials. ▲ Replacement Warning labels, signs, tags, and cards are a vailab le at no cost.
Accessories 309291P 39 Accessories Air Line Accessories AirFlex ™ Flex ible Gr ounded Air Hose 100 psi (7 bar, 0.7 MPa) Maxim um Working Pressure 0.315 in. (8 mm) I D; 1/4 npsm(f) x 1/4 npsm (f) left-hand thread. Use for maximum flexibility. 244963 6 ft (1.
Accessories 40 309291P Gun Accessories Gun Repair Kits 244781 Air Seal Repair Kit 244911 Fluid Seal Repair Kit Round P attern Kits Consists of fluid tip, diffuser and air cap.
Technical Data 309291P 41 Te c h n i c a l D a t a Loctite ® is a registere d trademark of the Loctit e Cor poration. Category Data Maximum W or king Fluid Pressure 100 psi (0.7 MP a, 7 bar) Maximum W or king Air Pressure 100 psi (0.7 MP a, 7 bar) Minimum Air Press ure at Gun Inle t 40 psi (0.
All written and visual data contained in this document reflects the latest product information available at the time of publica tion. Graco reserves the right to make changes a t any time without notice. This manual contains English. MM 309291 Graco Headquarters: Minneapolis International Offices: Belgium, China, Japan, Korea GRACO INC.
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