Assessments - 1, GPA: 4
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Facilidade de uso
Be sure tip of wire guide is as close to drive roll as possible without touching. Reinstall plate and tighten screws. 7 Retaining Knob Rotate counterclockwise and remove knob. 8 Drive Roll The drive roll consists of two different sized grooves. Each side is stamped with the proper size. Select the groove that matches the wire size on the wire spool. Install drive roll onto motor shaft so that correct groove size stamp faces out away from drive housing. 9 Retaining Knob Opening Install retaining knob by placing opening over drive roll (opening faces rear of unit). Rotate retaining knob clockwise to secure drive roll. Position wire into outer groove of drive roll (see Section 5-9). Tools Needed: Ref. 802 444-B / 803 442-A .030/.035 .024 Groove VK Groove Stamped .024 Stamped .030/.035 1 3 4 6 5 2 7 5/16 in. 8 9 7-5. Replacing Gun Contact Tip Tools Needed: Ref. 804 241-A Turn Off power before replacing contact tip. 1 Nozzle Remove nozzle. 2 Contact Tip 3 Tip Adapter Cut off welding wire at contact tip. Remove contact tip from tip adapter, and install new contact tip. Reinstall nozzle. 1 2 3 OM-947 Page 24 OM-947 Page 25 7-6. Cleaning Gun Liner 804 241-A / 803 838-A ! 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. Thread wire according to Section 5-9. Reassemble drive cover and gun in reverse order from taking it apart. Open pressure assembly. Retract wire from liner onto spool. Hold wire tightly to keep it from unraveling. Secure end of wire at spool. Remove screws (3) from cover, and remove cover from wire drive assembly. 8 mm 1 2 3 OM-947 Page 26 7-7. Replacing Gun Liner Ref. 804 241-A / 803 497-A / 803 837-A / 803 899-A Tools Needed: 8 mm / 10 mm Remove nozzle. Cut off wire at contact tip, and remove contact tip and tip adapter. Open pressure assembly. Retract wire from liner onto spool. Hold wire tightly to keep it from unraveling. Secure end of wire at spool. Twist top and bottom handle locking rings counterclockwise 1/4 turn. Slide bottom ring down cable and top ring forward over head tube. Separate gun handle halves. Loosen liner setscrew. Loosen and remove retaining nut from liner. Pull liner out of gun cable. If necessary, twist cable to ease removal. ! 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) into wire drive end of cable. Push liner toward gun. If necessary, twist cable to ease installation. Remove screws (3) from cover, and remove cover from wire drive assembly. 8 mm Remove black sleeving from end of replacement liner. Head Tube 8 mm 1 2 3 OM-947 Page 27 7-7. Replacing Gun Liner (Continued) When liner exits cable at gun handle, guide liner into head tube. Continue to push liner until it exits end of head tube. Slide locking rings over top and bottom of handle, and secure by twisting rings clockwise 1/4 turn. Place other half of handle over head tube and cable. Be sure that cable is straight. Tighten liner setscrew. Cut liner so that 3/8 in. (10 mm) sticks out of head tube. File down any sharp points on liner after cutting to length. 3/8 in (10 mm) Reassemble gun by placing head tube and cable into one half of handle. Be sure trigger is properly installed into trigger slot. Thread welding wire through gun (see Section 5-9). Reinstall adapter, contact tip, and nozzle. Reinstall cover onto wire drive assembly, and secure with screws (3). Insert retaining nut into adapter, and adjust liner stickout as shown. Tighten retaining nut. Reinstall cable end into drive housing with retaining grooves inserted into the two retaining ribs. Be sure to position gas hose up. Position liner in groove so that end is flush with back of groove, adjust if necessary 13/16 in. (21 mm) 8 mm 8 mm 7-8. Troubleshooting Table Trouble Remedy No weld output; wire does not feed; fan does not run. Secure power cord plug in receptacle (see Section 5-7). Replace building line fuse or reset circuit breaker if open. Place Power switch in On position (see Section 6-1). Reset welding power source supplementary protector if open. No weld output; wire does not feed; fan motor continues to run. Thermostat TP1 open (overheating). Allow fan to run with gun trigger switch off; thermostat closes when unit has cooled (see Section 4-2). Be sure that Voltage switch is not set between ranges (see Section 6-1). Disassemble torch handle and check trigger switch lead connections, tighten or reconnect any loose connections. No weld output; wire feeds. Connect work clamp to get good metal to metal contact. Check cable connection at work clamp and tighten hardware, if necessary (see Section 5-1). Replace contact tip (see Section 7-5). Check for proper polarity connections (see Section 5-3). Low weld output. Connect unit to proper input voltage or check ...