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Graco 312579K manual

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Table of contents for the manual

  • Page 1

    Instr uctions-P ar ts AirPr o ™ Gra vity Feed Air s pra y Gun 312579K EN Con ventional, HVLP , and compliant guns f or specialty industrial applications. For pr ofessional use only . 100 psi (0.7 MP a, 7 bar) Maximum Air Inlet Pressure See page 3 f or model inf or mation. Impor tant Safety Instructions Read all warnings and instructions in this m[...]

  • Page 2

    2 312579K Contents Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Gra vity F eed with out Cup . . . . . . . . . . . . . . . . . . 3 Gra vity F eed with Plastic Cup . . . . . . . . . . . . . . . 3 Gra vity F eed with 3M ™ PPS ™ Cup . . . . . . . . . . . 3 W arnings . . . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 3

    Models 312579K 3 Models Grav ity Feed without Cup Grav ity Feed with Plastic Cup Gra vity Feed with 3M ™ PPS ™ Cup Orifice Size in. (mm) Con ventional HVL P Compliant Model Series Max. HVLP/Compliant Air Pressure psi (MP a, bar) Model Series Max. HVLP/Compliant Air Pressure psi (MP a, bar) Model Series Max. HVLP/Compliant Air Pressure psi (MP a[...]

  • Page 4

    Warnings 4 312579K Wa r n i n g s The f ollowing w ar nings are f or the setup , use, grounding, maintenance , and repair of this equipment. The e xclamat ion point symbol aler ts y ou to a general warning and the hazard symbols ref er to procedure-specif ic r isks. Ref er back to these w ar nings. Additional, product- specific warnings ma y be f o[...]

  • Page 5

    Gun Selection 312579K 5 Gun Selection Con ventional Guns Excellent atomizati on and high production rates typically with some reduction in tr ansf er efficiency . HVLP Guns An HVLP gun is a high transf er efficiency gun which limits the air pre ssure at the air cap to 10 psi (0.07 MP a, 0.7 bar) maximum. In some areas, an HVLP gun is r equired f or[...]

  • Page 6

    Setup 6 312579K Setup 1. Shut off the air supply . 2. Install a shutoff v alv e (not supplied) do wn- stream of the air regulator to shut off gun air . 3. Install an inline air f ilter (not su pplie d) to clean and dr y t he gun air supply . 4. Connect a clean, dr y , filtered air supply to the air inlet fitting. See F IG . 1. 5. Connect the fluid [...]

  • Page 7

    Setup 312579K 7 Adjust Spra y P attern 1. Rotate the air cap to achie ve desired spr a y patter n. See F IG . 2. 2. T o achiev e full f an patter n, open the air control v alve b y tur ning the knob fully coun- terclockwise . See F IG . 3. 3. T o create a round patte r n, tur n the patter n air off b y tur ning the air control v alve fully clockwis[...]

  • Page 8

    Operatio n 8 312579K Operation Pressure Relief Pr ocedure 1. T ur n off the gun air supply . 2. T r igger the gun to reliev e pressure . Appl y Fluid 1. Fill the cup with materi al. Do not fill past the full mar kings on cup . 2. T ur n on the shop air to the gun. Set atomiz- ing pressure with t he gun fully tr iggered. 3. Adjust the patter n siz e[...]

  • Page 9

    Daily Gun Maintenance 312579K 9 Dail y Gun Maintenance General T asks Fo l l o w t h e Pressure Relief Pr ocedure , page 8. • F requently lubr icate the gun moving par ts with a drop of non-silicone oil. • Do not disassemble the spra y gun if y ou are having a spr a y pat ter n problem. See T roub leshooting , page 11, for inf ormation on how t[...]

  • Page 10

    Daily Gun Maintenance 10 312579K Clean Nozzle and Air Cap 1. Remov e air cap (13), trigger gun, remov e nozzle (11), and soak both in a compatible cleaning solution. 2. Clean air cap , nozzle, and front of the gun with a soft-bristle br ush dipped into com- patible solv ent. Do not use a wire brush or metal tools. 3. Use a soft implement, such as a[...]

  • Page 11

    Daily Gun Maintenance 312579K 11[...]

  • Page 12

    Daily Gun Maintenance 12 312579K T r oubleshooting Prob lem Cause Solution Spra y P atter n Nor mal patter n. No action necessar y . Spra y P atter n Dir ty or damaged air cap or fluid nozzle. Rotate air cap 180°. If patter n f ollows air cap , problem is in air cap (13). Clean and ins pect. If patter n is not corrected, replace air cap . If patte[...]

  • Page 13

    Daily Gun Maintenance 312579K 13 Excessiv e air blo wing back Loose fluid nozzle (11). Ti ghten fluid nozzle (11). Damaged fluid nozzle seal (19). Replace seal (19). Excessiv e air leak behind trigg er . W or n u-cups/air v alve . Repair gun (Kit 289408). Be sure to use all included par ts. W or n trigger . Replace trigger (par t 289140). If leak p[...]

  • Page 14

    Repair 14 312579K Repair See Pa r t s , page 16, f or callout references . Disassembl y 1. Unscrew retaining r ing (14) to remov e air cap (13b). Check o- r ings (13a and 13c) and replace if necessar y . 2. T r igger gun while unscr ewing nozzle (11) to pre vent needle damage . 3. Check o-ring (19) and replace if necessar y . 4. Remov e fluid contr[...]

  • Page 15

    Repair 312579K 15 Reassembl y 1. Install air control v alve assemb ly (5) with v alve turned fully counterclockwise to outer- most position. T orque to 85-90 in-lb (9.6-10.2 N•m). 2. Install air inlet v alve assemb ly (27) with v alve turned fully counterclockwise to outer- most position. T or que to 205-215 in-lb (23.2-24.3 N•m). 3. Lubricate [...]

  • Page 16

    Parts 16 312579K Pa r t s Pull trigger bef ore installing nozzle (11). Inser t spreader ( 15) with tapered end f acing rear of gun. Inser t u-cup (16) with open end f acing front of gun. Apply lubricant. Apply low strength thread retainer . Apply thread sealant. T orque to 85-90 in-l b (9.6-10.2 N•m). T o rque to 15-20 in-lb (1.7-2.2 N•m). T or[...]

  • Page 17

    Parts 312579K 17 ★ Included in Gun Repair Kit 289790. ✖ Included in T r igger Repair Kit 289143 (contains 5 of each par t). + Included in Needle P ac king Repair Kit 289455 (contains 5 of each par t). * Included in Air V a lve Repair Kit 289408. ◆ Included in Air Cap Seal Kit 289791 (contains 5 of each par t). ✓ Included in Retain ing Ring [...]

  • Page 18

    Accessories 18 312579K Accessories Cups Repair Kits Air V alves Cleaning Kit 3M ™ PPS ™ Cups and Accessories T est Gaug e Hoses Tips P ar t No. Description 289797 Cup , aluminum, 23 oz (650 cc) 289802 Cup , aluminum , 34 oz (1 liter) 289770 Cup , plastic, 23 oz (650 cc) 192407 Cup Holder P ar t No. Description 289455 Needle P ac king Repair Kit[...]

  • Page 19

    Repair Kits 312579K 19 Repair Kits Without Grav ity Cup With Gravity Cup With 3M PPS Cup Needle Tips Model Spra y T ype Nozzle Size in. (mm) Air Cap Kit (13a-13c) Nozzle Kit (11, 19) Needle Assembl y Kit (9a-9c) Needle/ Nozzle Kit (9a-9c, 11, 19) Needle Tip Kit (9c, 5-pack ) 289002 Conv ention al 0. 055 (1.4) 289773 289780 289799 289493 288185 2890[...]

  • Page 20

    Technical Data 20 312579K T echnical Data * Produces 10 psi (0.07 MP a, 0.7 bar) spra ying pressure at air cap . ** All readings we re taken with the f an valv e fully open (fan full siz e) at the assumed operator position. Sound pow er wa s tested per ISO 9614-2. Maximum Air Inlet Pressur e . . . . . . . . . . . . . . . . . . . . . 100 psi ( 0.7 M[...]

  • Page 21

    Technical Data 312579K 21[...]

  • Page 22

    All written and visual data cont ained in this document reflec ts the latest product information availab le at the time of publication. Graco reserve s the right to make changes at any time without notice. Original instructions. This manual contains English. MM 3125 79 Graco Headquarters: Minneapolis International Offices: Belgium, China, Japan, Ko[...]