Instruction/ maintenance manual of the product 312579 Graco Inc.
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Instr uctions-P ar ts AirPr o ™ Gra vity Feed Air s pra y Gun 312579H ENG 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.
Related Manuals 2 312579H Contents Related M anuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Gra vity F eed with out Cup . . . . . . . . . . . . . . . . . . 3 Gra vity F eed with Pla stic Cup .
Models 312579H 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.
Warnings 4 312579H 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 you to a general w ar ning and the hazard symbols ref er to procedure-specif ic r isks.
Gun Selection 312579H 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.
Setup 6 312579H 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.
Setup 312579H 7 Adjust Spra y P attern 1. Rotate the air cap to achie v e desired spra 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 .
Operatio n 8 312579H 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.
Daily Gun Maintenance 312579H 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.
Daily Gun Maintenance 10 312579H 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.
Daily Gun Maintenance 312579H 11.
Daily Gun Maintenance 12 312579H 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).
Daily Gun Maintenance 312579H 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).
Repair 14 312579H 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 .
Repair 312579H 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.
Parts 16 312579H 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.
Parts 312579H 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 lv e Repair Kit 289408. ◆ Included in Air Cap Seal Kit 289791 (contains 5 of each par t).
Accessories 18 312579H 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.
Repair Kits 312579H 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.
Technical Data 20 312579H 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 v alve fully open (f an full siz e) at the assumed operator position. Sound pow er wa s tested per ISO 9614-2.
Technical Data 312579H 21.
All written and visual data cont ained in this document reflec ts the latest product information av ailable at the time of publication. Graco reserve s the right to make changes at any time without notice. Original instructions. This manual contains English.
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If you already are a holder of Graco Inc. 312579, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Graco Inc. 312579.
However, one of the most important roles played by the user manual is to help in solving problems with Graco Inc. 312579. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Graco Inc. 312579 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
