Instruction/ maintenance manual of the product 308640 Hitachi
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308640 Rev . J Supersedes G includes Rev . H First choice when quality counts. t 05985 Part No. 238402 Spray Gun shown INSTRUCTIONS-P ARTS LIST INSTRUCTIONS This manual contains important warnings and information.
2 308640 T able of Contents W arnings 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operation 7 . . . . . . . . . . . . . . . . . .
308640 3 W ARNING INSTRUCTIONS EQUIPMENT MISUSE HAZARD Equipment misuse can cause the equipment to rupture, malfunction, or start unexpectedly and result in serious injury . This equipment is for professional use only . Read all instruction manuals, tags, and labels before operating the equipment.
4 308640 Installation KEY A Air Line Filter B Air Line Lubricator C* Bleed-type Air Shutoff V alve D Pump Air Regulator E* Fluid Drain V alve F Fluid Shutoff V alve G Fluid Filter H* Grounded Fluid Ho.
308640 5 Installation Connect the Air Line 1. Install an air line filter (A) to ensure a clean, dry air supply to the gun. Dirt and moisture in the line can ruin the appearance of your finished piece. See Fig. 1. 2. Install an air pressure regulator (L) on the gun air supply line to control the air pressure to the gun.
6 308640 Installation Ground the System W ARNING FIRE AND EXPLOSION HAZARD Improper grounding could cause static sparking, which could cause a fire or explosion. T o reduce the risk of property damage or serious injury , follow the grounding instructions below .
308640 7 Operation Safety W ARNING INJECTION HAZARD Remember , this is not an air spray gun. For your safety be sure to read and follow the W arnings on pages 2 and 3 and throughout the text of this instruction manual. Keep the wallet sized warning card 179960, pro- vided with the gun, with the operator of this equip- ment at all times.
8 308640 Operation How the Air-Assisted Spray Gun Operates The air-assisted spray gun combines airless and air spraying concepts. The spray tip shapes the fluid into a fan pattern, as does a conventional airless spray tip.
308640 9 Operation Adjust the Spray Pattern W ARNING RECOIL HAZARD Due to the very high pressure fluid emitted, a strong recoil action will occur when you trigger this gun. If you are unprepared, your hand could be forced back toward your body or you could lose your balance and fall, resulting in serious injury .
10 308640 Operation Apply the Fluid When applying the fluid, keep the gun a consistent distance, about 8 to 12 inches (200 to 300 mm) from the surface of the object being sprayed. Always hold the gun at a right angle from the surface. Do not make an arc with the gun as it causes an uneven coat of fluid.
308640 1 1 Operation Clean the Spray Gun and System Daily W ARNING INJECTION HAZARD T o reduce the risk of an injection injury or splashing fluid in the eyes or on the skin: Follow the Pressure Relief Procedure on page 7 before cleaning, removing, or installing a spray tip and whenever you are instructed to relieve pressure.
12 308640 Operation Flush the Gun Daily W ARNING INJECTION HAZARD T o reduce the risk of a fluid injection injury , follow the Pressure Relief Proce- dure on page 7 before cleaning, removing, or installing a spray tip and whenever you are instructed to relieve pressure.
308640 13 Notes.
14 308640 T roubleshooting W ARNING INJECTION HAZARD T o reduce the risk of a fluid injection injury , follow the Pressure Relief Proce- dure on page 7 before checking or servicing any of the system equipment and when- ever you are instructed to relieve pressure.
308640 15 T roubleshooting Spray Pattern T roubleshooting Problem Cause Solution Fluttering or spitting spray Insufficient fluid supply Air in paint supply line Attempting to “feather” (partially trig- ger) the gun. Adjust fluid regulator or fill fluid supply tank.
16 308640 Service W ARNING INJECTION HAZARD T o reduce the risk of a fluid injection injury , follow the Pressure Relief Proce- dure on page 7 before checking or servicing any of the system equipment and when- ever you are instructed to relieve pressure.
308640 17 Service Gasket (18) must be replaced if dif fuser-seat (15) is removed or replaced to avoid fluid leakage Gasket (17) must be replaced if fluid connector (30) is removed or replaced to avoid.
18 308640 Parts 1 2 3 5 6 7 8 9 25 24 23 11 12 13 14 15 16 17 30 19 18 10a 10b 29 5b 5a 34 26 1 Apply high strength sealant to threads. T orque to 23–27 ft-lb (31–37 N m) Gasket (18) must be replaced if diffuser-seat (15) is removed or replaced to avoid fluid leakage.
308640 19 Parts Use Only Genuine Graco Parts and Accessories Part No. 238402, 238852, 238883, and 241070 Ref. No. Part No. Description Qty . Ref. No. Part No.
20 308640 Parts 1 3 5 6 7 8 9 25 24 23 11 13 14a 15 17 30 19 18 10a 10b 29 5b 5a 34 26 1 Apply high strength sealant to threads. T orque to 23–27 ft-lb (31–37 N m) Gasket (18) must be replaced if diffuser-seat (15) is removed or replaced to avoid fluid leakage.
308640 21 Parts Use Only Genuine Graco Parts and Accessories Part No. 238851 and 239001 Ref. No. Part No. Description Qty . 1 238750 BODY , gun 1 2 106917 ADAPTER, air 1 3 276429 TRIGGER, gun 1 5 2174.
22 308640 Spray T ip Selection Charts NOTE: Part No. 238755 Fluid Needle and 224855 Diffuser- seat must be used with GG4 tips larger than 0.025 in. (0.
308640 23 Spray T ip Selection Charts Standard Spray T ips, for use with Air Cap 239781 Fan Width * Light to Orifice Fan Width at 12” *Light to Medium *Heav y Orifice Size at 12 (300 mm) Medi u m V iscosity Heavy V iscosity Part No. 0.021 (0.533) 6–8 (150–200) 35.
24 308640 Spray T ip Selection Charts Standard Sealer Tips, f or use with Air Cap 239781 NOTE: Part No. 238755 Fluid Needle and 224855 Diffuser- seat must be used with GG4 tips larger than 0.025 in. (0.635 mm). *Light to Orifice Size Light to Medium V iscosity *Heavy V iscosity Part No Size inches V iscosity fl oz/min V iscosity fl oz/min Part No.
308640 25 Spray T ip Selection Charts AA Reverse-A-Clean (AA RAC ) Spray T ips Fan Width * Light to Orifice Fan Width at 12” *Light to Medium *Heav y Orifice Size at 12 (300 mm) Medi u m V iscosity Heavy V iscosity Part No. 0.023 (0.584) 8–10 (200–250) 40.
26 308640 T echnical Data Maximum Working Fluid Pressure 4000 psi . . . . . . . . . (28 MPa, 280 bar) Maximum Working Air Pressure 100 psi . . . . . . . . . . . . . (0.7 MPa, 7 bar) Maximum Working Fluid T emperature . 120 _ F (49 _ C) Weight (less filter) 1.
308640 27 Accessories Use Only Genuine Graco Parts and Accessories Grounding Clamp and Wire 22201 1 12 ga, 25 ft (7.6 m) wire High Pressure Ball V alves, V iton Seals 5000 psi (35 MPa, 350 bar) Maximum Working Pressure Can be used as fluid drain valve.
28 308640 Graco Standard W arranty Graco warrants all equipment manufactured by Graco and bearing its name 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 Hitachi 308640 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Hitachi 308640 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 Hitachi 308640 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Hitachi 308640 you will learn all the available features of the product, as well as information on its operation. The information that you get Hitachi 308640 will certainly help you make a decision on the purchase.
If you already are a holder of Hitachi 308640, 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 Hitachi 308640.
However, one of the most important roles played by the user manual is to help in solving problems with Hitachi 308640. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Hitachi 308640 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
