Instruction/ maintenance manual of the product 307-638 Graco Inc.
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INSTRUCTIONS–P ARTS LIST 307–638 Rev . AE Supersedes AD This manual contains IMPORT ANT W ARNINGS AND INSTRUCTIONS READ AND RET AIN FOR REFERENCE Part Number 218–026, Series E With 1.2 mm (0.047 in.) fluid nozzle, part no. 218–996 U.S. Patent No.
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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 .
4ą307-638 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 .
307-638ą5 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.
TYPICAL INST ALLA TION KEY A Main Air Supply Line B V entilation Fan Interlock Solenoid V alve C Main Air Supply Shutof f V alve (bleed–type) D Air & W ater Separator.
INST ALLA TION V entilate the Spray Booth W ARNING T o prevent hazardous concentrations of toxic and/or flammable vapors, spray only in a properly ventilated spray booth. Never operate the spray gun unless ventilation fans are operating.
INST ALLA TION Check the Electrical Grounding (See Fig 1) W ARNING Proper electrical grounding of every part of your system is essential. For your safety , read the warning section, FIRE OR EXPLOSION HAZARD , on page 5. Ground the system as explained there.
307-638ą9 OPERA TION W ARNING Pressure Relief Procedure To reduce the risk of serious bodily injury , including splashing in the eyes or on the skin, injury from moving parts or electric shock, alway.
10ą307-638 OPERA TION Install the Fluid Nozzle and Air Cap W ARNING To reduce the risk of serious bodily injury , including splashing in the eyes or on the skin or electric shock, always follow the Pressure Relief Proce- dure on page 9 before installing, or removing the fluid nozzle/air cap assembly .
307-638ą11 MAINTENANCE Daily Care and Cleaning W ARNING To reduce the risk of serious bodily injury , including splashing in the eyes or on the skin or electric shock, always follow the Pressure Reli.
12ą307-638 MAINTENANCE Flush the Spray Gun W ARNING To reduce the risk of fire or explosion and serious bodily injury , the ES ON–OFF lever must be OFF before flushing. 1. Follow the Pressure Relief Procedure W arning on page 9. 2. Disconnect and plug the fluid line.
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.
14 307-638 GUN OPERA TION TROUBLESHOOTING CHART Misalignment between air cap and Remove and clean air cap and fluid nozzle fluid nozzle. as described in Maintenance Section under Clean the Air Cap and Fluid Nozzle , then reinstall them. PROBLEM CAUSE SOLUTION W orn needle packing.
307-638 15 ELECTRICAL TROUBLESHOOTING CHART PROBLEM CAUSE SOLUTION *ES ON–OFF lever in OFF position. T urn lever to ON. Improper distance between gun Adjust spraying distance to and workpiece. 203–305 mm (8–12 in.). Parts poorly grounded. Clean hangers, check for proper ground on conveyer or track.
16 307-638 ELECTRICAL TESTS $! ,!-"+-)*! +" /$! .,-4 #0* %. %-!/(4 ""!/! 4 /$! +* %/%+* +" /$! !(!/-%( +),+*!*/. +*/%*! %*6 .% ! /$! #0* $! !(!/-%( /!.
307-638 17 ELECTRICAL TESTS T est Resistor Stud Resistance $(') %$*)!+ '% !$)% ) *$ ''&quo.
18 307-638 SERVICE Gun Disassembly ăWARNINGĂ (-.&&#(! ( -,0##(! ."#- +/#*'(. ,+/#,- -- .) *,.- 1"#" '2 /- &.
307-638 19 SERVICE Resistor Stud Replacement ăWARNINGĂ Old/New Style Resistor Stud and Electrode , ."!1 " 0%" .&/( ,# /-.(&+$ 3%& % ,1)! 1/" #&." ,.
20 307-638 SERVICE Barrel Removal )-,!1 .$! )/. . .$! ,,!' "'/% %)'!. !! %# /'' .$! "'/% ./! */.
307-638 21 SERVICE 5. Carefully remove the fluid needle assembly (45) from the rear part of the gun barrel (18). See Fig 15. If the packing assembly (45a) or insulator (45g) are still in the barrel, insert the packing removal rod (59d) into the front of the barrel to gently push them out.
SERVICE Fig 17 KEY 2 Gun Handle 3a Alternator 3b O–Ring 3c Plug 5 Power Supply 5a O–Ring 5b O–Ring 5c Spring 18 Barrel 18b Cushion 46 Gasket 18 46 5c 5b 5a 3a 3c 3b 2 5 NOTE: The power cartridge (3) includes items 3a, 3b, 3c, and 5.
SERVICE T urbine Alternator Removal 1. Remove power cartridge from the gun handle as described under Power Cartridge Replacement . 2. Carefully twist the turbine alternator (3a) counter- clockwise and pull it of f the power supply (5) until just disengaged from the coupling.
24 307-638 SERVICE Fan Air V alve Replacement 1. Place a wrench on the flats of the valve housing (33) and remove it from the handle (2). See Fig 20. 2. Remove the retaining ring (31). 3. Rotate the air adjusting screw (34) counterclockwise until it is disengaged from the valve housing threads.
307-638 25 SERVICE ES ON–OFF V alve Removal & Replacement 1. Loosen and remove the nut (35). Remove the lever (37) and washer (36). See Fig 22. Insert the hex head wrench into the hex end of the valve (39), and turn it to loosen and remove the valve.
P ARTS DRA WING 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–D Guns were white.
P ARTS LIST REF NO. P ART NO. DESCRIPTION QTY 2 218–014 HANDLE, gun; Includes item 2a 1 2a 179–400 .ADAPTER 1 3 218–1 1 1 POWER CAR TRIDGE; Includes items 3a and 5 1 3a 217–591 AL TERNA T OR, turbine; Includes items 3b & 3c 1 3b* 107–106 .
REP AIR 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 PRO4000 W ARRANTY AND DISCLAIMERS W ARRANTY Graco warrants the PRO4000 to be free from defects in material and workmanship 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. 307-638 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Graco Inc. 307-638 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Graco Inc. 307-638 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Graco Inc. 307-638 you will learn all the available features of the product, as well as information on its operation. The information that you get Graco Inc. 307-638 will certainly help you make a decision on the purchase.
If you already are a holder of Graco Inc. 307-638, 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. 307-638.
However, one of the most important roles played by the user manual is to help in solving problems with Graco Inc. 307-638. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Graco Inc. 307-638 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
