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OM-952 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

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Содержание H-9A

Страница 1: ...es OM 952 220 361A June 2004 H 9A 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 ...

Страница 2: ... take time to read the Safety precautions They will help you protect yourself against potential hazards on the worksite We ve 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...

Страница 3: ...nd Overheating 3 3 3 Installing Gun Into Welding Power Source 4 3 4 Threading Welding Wire 5 SECTION 4 OPERATION 6 4 1 Operating The Gun 6 SECTION 5 MAINTENANCE 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 Maintenan...

Страница 4: ......

Страница 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...

Страница 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...

Страница 7: ...G 5 4 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 803 836 A H 9 Feeds 030 035 in 0 8 0 9 mm Flux Cored Wire Or 023 030 in 0 6 0 8 mm H...

Страница 8: ...oid 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 cable tie s Thread wire according to Section 3 4 Y Turn off welding power source If existing gun requires removal see Section 5 6 Route wires cable and hose to avoid contact with sha...

Страница 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...

Страница 10: ...OM 952 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 ...

Страница 11: ...B 803 838 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...

Страница 12: ... handle by lifting top rear portion up and sliding forward over head tube 2 mm Loosen liner setscrew with allen wrench Loosen and remove retaining nut from liner Pull liner out of gun cable If necessary twist cable to ease removal Y Turn off welding power source Install retaining nut on one end of liner Lay gun cable straight on a flat surface Insert bare end of liner end without retaining nut int...

Страница 13: ...nch Cut liner so that 3 4 in 19 mm sticks out of head tube 3 4 in 19 mm Reassemble gun by placing head tube into bottom section of handle Thread welding wire through gun see Section 3 4 Reinstall adapter contact tip and nozzle Reinstall cover onto wire drive assembly and secure with screws 3 2 mm Insert retaining nut into adapter and adjust liner stickout as shown Tighten retaining nut Reinstall c...

Страница 14: ...ndle 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 Loosen nut and slide it down on liner Lay gun cable straight on a flat surface Pull liner until it exits the head tube It is not necessary to completely remove line...

Страница 15: ...crew with allen wrench Cut liner so that 3 4 in 19 mm sticks out of head tube 3 4 in 19 mm Reassemble gun by placing head tube into bottom section of handle Thread welding wire through gun see Section 3 4 Reinstall adapter contact tip and nozzle Reinstall cover onto wire drive assembly and secure with screws 3 2 mm Insert retaining nut into liner and adjust liner stickout as shown Tighten retainin...

Страница 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...

Страница 17: ...olenoid 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 spo...

Страница 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 ...

Страница 19: ...ontact scr 035 wire x 1 125 9 220 362 NUT liner retainer 1 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 w...

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

Страница 21: ...Notes ...

Страница 22: ...Notes ...

Страница 23: ...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 Exception brushes slip rings and relays are covered on Hobart Engine Driven models 2 Items furnished by Hobart Miller but manufactured by others such as engines...

Страница 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...

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