Assessments - 4, GPA: 3.5
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9 Contact Tip Thread wire through canister inlet guide, along drive roll groove, and out contact tip. Install spool so wire feeds off bottom. 10 Spool Brake Thumbnut If necessary, turn thumbnut counterclockwise slightly to install spool. 11 Thumbscrew (Canister Rotation) Loosen thumbscrew to rotate canister (see Section 4-4). Close and secure pressure roll assembly. Reinstall top cover and canister cover. Tools Needed: 9 1 2 10 3 4 5 6 8 7 11 4-4. Rotating Canister 150 433-A 1 Canister Loosen canister rotation thumbscrew (see Section 4-3). Move canister to desired position. Tighten thumbscrew. 1 Rear View OM-1213 Page 12 4-5. Connecting To 24 Volt Weld Control 150 917-G 1 Gas Hose Connect fitting to regulator/flowmeter (see Section 4-7). 2 24 Volt Weld Control 3 Trigger Control Cord Insert plug into receptacle, and tighten threaded collar. 4 Weld Cable Connect to positive (+) weld output terminal on welding power source according to its Owner’s Manual. Tools Needed: 1-1/8, 5/8 in 1 4 3 2 4-6. Connecting To 115 Volt Weld Control Ref. 149 549-A / 149 966-J 1 115 Volt Weld Control 2 Gas Hose Connect to regulator/flowmeter. 3 Trigger Control Cord Insert plug into receptacle, and tighten threaded collar. 4 Weld Cable 5 Positive (+) Weld Output Terminal In Control Connect weld cable to positive (+) weld output terminal in weld control. Reinstall weld control wrapper. Left Side Wrapper Off 6 5 1 2 3 4 3 Tools Needed: 1-1/8, 5/8 in 4-7. Installing Gas Supply ssb3.1* 5/94 . 158 697-A Obtain gas cylinder and chain to running gear, wall, or other stationary support so cylinder cannot fall and break off valve. 1 Cap 2 Cylinder Valve Remove cap, stand to side of valve, and open valve slightly. Gas flow blows dust and dirt from valve. Close valve. 3 Cylinder 4 Regulator/Flowmeter Install so face is vertical. 5 Gas Hose Connection Fitting has 5/8-18 right-hand threads. 6 Flow Adjust Typical flow rate is 20 cfh (cubic feet per hour). Check wire manufacturer’s recommended flow rate. Make sure flow adjust is closed when opening cylinder to avoid damage to the flowmeter. 7 CO2 Adapter 8 O-Ring Install adapter with O-ring between regulator/flowmeter and CO2 cylinder. Tools Needed: 1-1/8, 5/8 in CO2 Gas 7 8 3 1 2 4 5 6 1 2 3 Argon Gas OR OM-1213 Page 13 OM-1213 Page 14 4-8. Adjusting Drive Roll And Spool Brake Pressure Ref. 151 112-F / 147 741-F 1 Top Cover 2 Canister Cover 3 Thumbscrew Loosen thumbscrew and remove cover. 4 Spool Cut welding wire off at contact tip. Retract wire onto spool and secure. 5 Spool Brake Thumbnut Grasp spool in one hand and turn while adjusting spool brake thumbnut. When a slight force is needed to turn spool, tension is set. Do not overtighten. Reinstall canister cover. Thread welding wire (see Section 4-3). 6 Drive Roll Tension Thumbnut Turn On unit and check drive roll pressure by feeding wire against a wood board or concrete surface; wire should feed steadily without slipping. Adjust drive roll tension thumbnut if necessary. Do not overtighten. Turn Off unit. Reinstall top cover. Tools Needed: WOOD Adjusting Pressure 1 2 5 3 4 6 OM-1213 Page 15 SECTION 5 . OPERATION 5-1. Controls Ref. 147 741-F 1 Trigger Press trigger to energize welding power source contactor (if applicable), start shielding gas flow, and begin wire feed. For shielding gas preflow and postflow, lightly press trigger before and after welding. 2 Wire Speed Control Use control to adjust wire feed speed. The numbers in the opening are not a wire feed speed and are for reference only. 3 Rating Label Location 1 2 3 5-2. Shielding Gas sb5.1* 6/92 . S-0621-C / Ref. 147 741-F 1 Shielding Gas Cylinder 2 Valve 3 Gun Trigger Open valve on cylinder just before welding. Gun trigger turns weld output and gas flow on and off. For shielding gas preflow and postflow, lightly press trigger before and after welding. Close valve on cylinder when finished welding. 1 2 3 OM-1213 Page 16 SECTION 6 . MAINTENANCE & TROUBLESHOOTING 6-1. Routine Maintenance Disconnect power before maintaining. Maintain more often during severe conditions. 3 Months Replace Damaged Or Unreadable Labels Replace Damage Gas Hose Clean And Tighten Weld Terminals Repair Or Replace Cracked Cables And Cords 6 Months Blow Out Or Vacuum Inside Clean Drive Rolls 6-2. Changing Gun Contact Tip Ref. 150 437-A 2 1 Remove nozzle 1 Nozzle 2 FasTip Unscrew FasTip. Install new FasTip. OM-1213 Page 17 6-3. Replacing Head Tube Liner Ref. 803 551-C The standard head tube liner will accommodate wire diameters from .030-1/16 wire size. 1 Cover 2 Screw 3 Clamp Loosen clamp screws and remove clamp. 4 Head Tube Remove head tube from gun. 5 Liner Pull liner out of head tube. Insert liner into head tube and reinstall head tube onto gun. A twisting motion may be needed to feed liner thru head tube. 4 5 5/32 in 1 2 3 4 Tool Needed: Notes OM-1213 Page 18 6-4. Gun Drive Assembly Maintenance Ref. 149 967-H / Ref. 800 945-A Retract wire onto spool. 1 Setscrew 2 Current Pick-Up Tab This tab helps prevent b...
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