Instruction/ maintenance manual of the product 307-712 Graco Inc.
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INSTRUCTIONS–P ARTS LIST 307–712 Rev P Supersedes N This manual contains IMPORT ANT W ARNINGS AND INSTRUCTIONS READ AND RET AIN FOR REFERENCE Model PRO 5000 AUT OMA TIC MID-RANGE ELECTROST A TIC AIR SPRA Y GUN 7 bar (100 psi) MAXIMUM WORKING AIR PRESSURE Part Number 218–745, Series B With 1.
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T ABLE OF CONTENTS T erms 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety W arnings 4, 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . How The Electrostatic Air Spray Gun W orks 5 .
SAFETY W ARNINGS SERIOUS BODIL Y INJUR Y , EXPLOSION, FIRE, OR ELECTRIC SHOCK CAN OCCUR IF THE PRECAUTIONS BELOW ARE NOT FOLLOWED. READ AND UNDERST AND ALL INSTRUCTION MANUALS, T AGS, AND W ARNING LABELS BEFORE OPERA TING EQUIPMENT .
FIRE OR EXPLOSION HAZARD To reduce the risk of fire, explosion, or electric shock, which may result from electrical discharge, it is essential that: S All parts of the electrostatic system are properly grounded. S All personnel in or close to the spray area are properly grounded.
6 307-712 TYPICAL INST ALLA TION KEY A Air Supply Shut-of f V alve (bleed-type) B Air & W ater Separator C Ball V alve D Air Line Lubricator E Air Regulator F Pump G Fluid Filter H Drain V alve J .
INST ALLA TION Mount the Gun Mount the gun on a stationary support or on a reciprocat - ing arm. The mounting rod must be properly grounded . Mount the gun so the front of the gun is 254 to 300 mm (10 to 12 in.) from the work piece.
INST ALLA TION Check the Electrical Grounding W ARNING Proper electrical grounding of every part of your system is essential. For your safety , read the warn - ing section, FIRE OR EXPLOSION HAZARD , on page 5. Ground the system as explained there.
OPERA TION W ARNING Pressure Relief Procedure T o reduce the risk of serious bodily injury , including splashing in the eyes or on the skin, injury from moving parts or elect.
OPERA TION Adjust the Spray Pattern Follow the steps below to establish the correct fluid flow and air flow . DO NOT turn the turbine air on yet. 1. Adjust the fluid flow for the appropriate flow rate by using the fluid pressure regulator installed in the fluid line.
MAINTENANCE Daily Care and Cleaning CAUTION Clean all parts with a non–conductive solvent, compatible with the fluid being sprayed. Conduc- tive solvents can cause the gun to malfunction. Do not use any cleaning method which may al - low solvent into the gun air passages.
MAINTENANCE To C lea n o r C hang e A i r C a p a n d F lui d N ozzle CAUTION Do not use metal tools to clean the air cap holes as this may scratch them, and make sure the elec- trode wire is not damaged. Scratches in the air cap holes or a damaged electrode wire can distort the spray pattern.
SPRA Y P A TTERN TROUBLESHOOTING CHART W ARNING Installing and servicing this equipment requires access to parts which may cause electric shock or other serious bodily injury if the work is not performed properly . Do not install or service this equipment unless you are trained and qualified.
GUN OPERA TION TROUBLESHOOTING CHART Misalignment between air cap and Remove and clean air cap and fluid fluid nozzle. nozzle as described on page 12, then reinstall them. PROBLEM CAUSE SOLUTION W orn needle packing. Replace packing assembly .
ELECTRICAL TROUBLESHOOTING CHART PROBLEM CAUSE SOLUTION *T urbine alternator not operating. Check air supply to turbine. Check for dirt or moisture in turbine. See page 23. Improper distance between gun Adjust spraying distance to and workpiece.
16 ELECTRICAL TESTS The performance of the spray gun is directly af fected by the condition of the electrical components contained inside the gun.
ELECTRICAL TESTS T est Resistor Stud Resistance Insert a conductive rod (FF) into the gun barrel (removed for the power supply test) and against the metal contact (GG) in the front of the barrel. See Fig 9. Measure the resistance between the conductive rod (FF) and the gun electrode (14).
18 SERVICE Gun Disassembly W ARNING Installing and servicing this equipment requires access to parts which may cause electric shock or other serious bodily injury if the work is not per- formed properly . Do not install or service this equipment unless you are trained and qualified.
SERVICE Resistor Stud Replacement W ARNING Old/New Style Resistor Stud and Electrode To reduce the risk of sparking, which could cause fire or explosion, BE SURE the electrode and stud you install are black. The old style electrode and stud in the Series A Guns were white.
20 SERVICE Barrel Removal 1. Unscrew the nut (34) at the gun’s fluid inlet adapter (35). See the P ARTS DRA WING . 2. Pull the fluid tube (31) out of the fluid adapter (35). 3. Remove the trigger by removing the screws and spacers from the gun.
21 307-712 SERVICE !1%&4,,8 1%-/5% 3(% &,4)$ .%%$,% !22%-",8 &1/- 3(% 1%!1 0!13 /& 3(% '4. "!11%, %% )' & 3(% 0!#+).
22 307-712 SERVICE Fig 17 KEY 1 2, -"5 2a *1#/,1-/ 2b ',% 2c *2% 5 -4#/ 2..*5 5a ',% 5b ',% 5c ./',% 6 0)#1 20 //#* NOTE: &# .
23 307-712 SERVICE T urbine Alternator Removal &.07& 108&3 $"353*%(& '30. 5)& (6/ #0%9 "4 %&4$3*#&% 6/%&3 P ow.
24 307-712 SERVICE Piston Removal and Repair 1. T o disconnect the fluid hose (31) from the cover plate (41), screw the nut (34) off the adapter (35).
25 307-712 SERVICE Disc Regulator O ĆRing Replacement 04%3'8 5*' 563$+0' #+3 .+0' (31/ 5*' #'3 '&.
Ref No. 2 Power Cartridge Includes items 2a–2c & 5 Screw in restrictors flush with surface of gun body 26 P ARTS DRAWING 66a 66b 66c 66d 66h 66f 66e 66g Ref No 66, T ool Kit Includes ite.
P ARTS LIST REF NO. P ART NO. DESCRIPTION QTY 1 218–744 BODY , gun 1 2 218–1 1 1 POWER CARTRIDGE Includes items 2a & 5 1 2a 217–591 .AL TERNA T OR, turbine Includes items 2b & 2c 1 2b* 107–106 ..O–RING; buna–N 2 2c 180–070 .
KITS Repair Kits must be purchased separately . Use only GENUINE GRACO P ARTS AND ACCESSORIES. W ARNING When servicing use only genuine Graco replace- ment parts. Use of other parts or any alteration or modification of this equipment could result in serious injury , fire, explosion, or property damage.
TECHNICAL DA TA Weight 0.87 Kg (1.90 lb) . . . . . . . . . . . . . . . . . . . . . . . . . . . Gun Length 310 mm (12.25 in.) . . . . . . . . . . . . . . . . . . . . . Maximum W orking Pressure 7 bar (100 psi) . . . . . . .
ACCESSORIES Accessories must be purchased separately . Use only GENUINE GRACO P ARTS AND ACCESSORIES. W ARNING NEVER operate your equipment at a working pressure rating that is higher than the lowest rated component in your system.
ACCESSORIES FIL TER (AIR OR P AINT) 202–271 52 bar (750 psi)MAXIMUM WORKING PRESSURE With 250 micron (60 mesh) element, 3/8 npt(f) inlet, 3/8 npt(m) outlet SPRA Y SYSTEM.
THE GRACO W ARRANTY AND DISCLAIMERS W ARRANTY Graco warrants all equipment manufactured by it and bearing its name to be free from defects in material and work - manship on the date of sale by an authorized Graco distributor to the original purchaser for use.
An important point after buying a device Graco Inc. 307-712 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
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If you already are a holder of Graco Inc. 307-712, 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. 307-712.
However, one of the most important roles played by the user manual is to help in solving problems with Graco Inc. 307-712. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Graco Inc. 307-712 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
