Hobart H-9 Gun, Owner'S Manual

Page 1: ...ses OM 948 213 220B May 2003 H 9 Gun Description MIG GMAW Welding Optional Flux Cored FCAW Welding Semi Automatic Air Cooled Flux Cored FCAW And MIG GMAW Welding Gun Visit our website at www HobartWelders com ...

Page 2: ... made installation and operation quick and easy With Hobart you can count on years of reliable service with proper maintenance And if for some reason the unit needs repair there s a Troubleshooting section that will help you figure out what the problem is The parts list will then help you to decide the exact part you may need to fix the problem Warranty and service information for your particular ...

Page 3: ... TROUBLESHOOTING 7 5 1 Replacing Gun Contact Tip 7 5 2 Cleaning Gun Liner 7 5 3 Replacing Gun Liner 8 5 4 Replacing Liner O Ring 10 5 5 Replacing Switch And Or Head Tube 12 5 6 Removing Gun From Welding Power Source 13 5 7 Routine Maintenance 14 5 8 Troubleshooting 14 SECTION 6 PARTS LIST 15 WARRANTY OM 948 WARNING This product when used for welding or cutting produces fumes or gases which contain...

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Page 5: ...nd body protection 3 Cover exposed skin with spatter resistant clothing ELECTRIC SHOCK can kill 1 Always wear dry insulating gloves 2 Insulate yourself from work and ground 3 Do not touch live electrode or electrical parts 4 Repair or replace worn damaged or cracked gun or cable insulation 5 Turn off welding power source before changing contact tip or gun parts 6 Keep all covers and handle securel...

Page 6: ... us to interpret the evidence in a single coherent framework Even more frustrating it does not yet allow us to draw definite conclusions about questions of possible risk or to offer clear science based advice on strategies to minimize or avoid potential risks To reduce magnetic fields in the workplace use the following procedures 1 Keep cables close together by twisting or taping them 2 Arrange ca...

Page 7: ...6 7 1 2 CAUTION MOVING PARTS can injure Keep away from moving parts Keep all panels and covers closed when operating 3 Turn Off switch when using high frequency SECTION 3 INSTALLATION 3 1 Specifications Air Cooled Welding Gun For FCAW And GMAW Welding Note Using gasless flux cored wire reduces gun duty cycle 803 495 A H 9 Feeds 030 To 035 in 0 8 To 0 9 mm Flux Cored Wire Or 024 To 030 in 0 6 To 0 ...

Page 8: ...ds and gas hose through opening in drive housing Reinstall cover and secure with screws 3 Remove wrapper from unit Connect gas hose to adapter if unit is not equipped with gas solenoid valve secure hose to wiring harness Connect trigger leads to RC3 and RC4 on PC1 Route weld cable through opening in baffle Connect weld cable to weld terminal Reinstall wrapper onto unit Secure leads and hose with c...

Page 9: ...ugh to prevent slipping Cut off wire Close door Press gun trigger until wire comes out of gun 2 Turn power on INPUT POWER 6 in 150 mm Tighten Rotate pressure adjustment knob in a clockwise direction until drive roll is tight against the welding wire Adjust drive roll pressure just tightly enough to prevent wire from slipping on or against drive roll during operation Tighten Be sure that wire is po...

Page 10: ...OM 948 Page 6 SECTION 4 OPERATION 4 1 Operating The Gun Ref 803 495 A 1 Trigger Switch When pressed energized wire feeds and shielding gas flows 1 ...

Page 11: ...B 803 497 A Y Turn off welding power source 1 Nozzle 2 Contact Tip 3 Adapter Head Tube Tools Needed 8 mm Lay gun cable out straight and blow out liner Remove nozzle Cut off wire at contact tip and remove contact tip and tip adapter 8 mm Thread wire according to Section 3 4 Reassemble drive cover and gun in reverse order from taking it apart 1 2 3 Open pressure assembly Retract wire from liner onto...

Page 12: ...rive assembly Twist handle locking ring counterclockwise 1 4 turn and slide it down cable Separate gun handle by lifting top rear portion up and sliding forward over head tube 2 mm Loosen liner setscrew with allen wrench Pull end of liner out from housing groove and pull liner out of gun cable Black tubing end of liner Y Turn off welding power source Black tubing end of liner Lay gun cable straigh...

Page 13: ...r head tube Be sure that cable is straight Tighten liner setscrew with allen wrench Cut liner so that 3 4 in 19 mm sticks out of head tube Reinstall cable end into drive housing with retaining ring between the two locating ribs Position liner in groove so that black tubing end is flush with back of groove 3 4 in 19 mm Reassemble gun by placing head tube into bottom section of handle Thread welding...

Page 14: ... handle locking ring counterclockwise 1 4 turn and slide it down cable Separate gun handle by lifting top rear portion up and sliding forward over head tube Loosen liner setscrew with allen wrench Pull end of liner out from housing groove Lay gun cable straight on a flat surface Pull liner until it exits the head tube It is not necessary to completely remove liner from gun Black tubing end of line...

Page 15: ...tion of handle over head tube Be sure that cable is straight Tighten liner setscrew with allen wrench Cut liner so that 3 4 in 19 mm sticks out of head tube Reinstall cable end into drive housing with retaining ring between the two locating ribs Position liner in groove so that black tubing end is flush with back of groove 3 4 in 19 mm Reassemble gun by placing head tube into bottom section of han...

Page 16: ...switch and connect leads polarity is not important Reassemble in reverse order If replacing head tube continue to end of figure Lower top portion of handle onto bottom of handle Slide locking ring over rear of handle and secure with by twisting ring clockwise 1 4 turn Slide top portion of handle over head tube Reassemble gun by placing head tube into bottom section of handle Thread welding wire th...

Page 17: ...id valve loosen hose from wiring harness Disconnect trigger leads from RC3 and RC4 on PC1 Pull weld cable through opening in baffle Disconnect weld cable from weld terminal Remove leads and hose from cable tie s Y Turn off welding power source Head Tube Remove nozzle Cut off wire at contact tip and remove contact tip and tip adapter 8 mm Open pressure assembly Retract wire from liner onto spool Ho...

Page 18: ...ctions at PC1 see Section 3 3 Check and if necessary replace gun trigger switch see Section 5 5 Weld porosity Remove weld spatter buildup in nozzle Make sure inner head tube is tight in cable connector Check shielding gas flow supply Replace liner O ring see Section 5 4 Wire feeding stops or does not feed properly during welding Straighten gun cable and or replace damaged parts see Section 5 2 or ...

Page 19: ...000 068 TIP contact scr 035 wire x 1 125 OPTIONAL To maintain the factory original performance of your equipment use only Manufacturer s Suggested Replacement Parts Model and serial number required when ordering parts from your local distributor Table 6 1 Contact Tip Options HOBART PART NO DESCRIPTION REMARKS 196 134 Tip contact scr 023 wire Pkg of 5 196 131 Tip contact scr 030 wire Pkg of 5 196 1...

Page 20: ...Notes Work like a Pro Pros weld and cut safely Read the safety rules at the beginning of this manual ...

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Page 23: ...parately by the manufacturer Hobart s 5 3 1 Limited Warranty shall not apply to 1 Consumable components such as contact tips cutting nozzles slip rings drive rolls gas diffusers plasma torch tips and electrodes weld cables and tongs and tips or parts that fail due to normal wear 2 Items furnished by Hobart Miller but manufactured by others such as engines or trade accessories These items are cover...

Page 24: ...r To locate a Distributor retail or service location Call 1 877 Hobart1 or visit our website at www HobartWelders com Contact your Distributor for Welding Supplies and Consumables Options and Accessories Personal Safety Equipment Service and Repair Replacement Parts Training Schools Videos Books Technical Manuals Servicing Information and Parts Circuit Diagrams Welding Process Handbooks Contact th...