Assessments - 2, GPA: 5
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Duty Cycle And Overheating Duty Cycle is percentage of 10 minutes that unit can weld at rated load without overheating. . Exceeding duty cycle can damage unit and void warranty. Air-Cooled Models 100% Duty Cycle At 200 Amperes Using Argon 60% Duty Cycle At 250 Amperes Using Argon Continuous Welding 6 Minutes Welding 4 Minutes Resting Water-Cooled Models 100% Duty Cycle At 400 Amperes Using Argon Continuous Welding OM-1581 Page 9 OM-1581 Page 10 SECTION 3 – INSTALLATION Be sure that contact tip, liner, and drive rolls are correct for wire size and type. See Section 5 to change parts as needed. See Section 7 for list of other available contact tips. NOTE Review Section 3-1 through Section 3-4 to determine how equipment will be connected. Air-cooled models are shown in Section 3-1 through Section 3-4. For water-cooled models, supplied water hoses must be connected from wire feeder to coolant supply. Read entire Section 3 before installing equipment. 3-1. Connections With A CC, CV Or CC/CV Voltage Welding Power Source Having A 14-Socket Receptacle 1 Constant Current (CC), Constant Voltage (CV) Or Constant Current/Constant Voltage (CC/CV) Welding Power Source 2 115 VAC/Contactor Control 14-Pin Plug 3 Workpiece 4 Voltage Sensing Lead Connect lead to workpiece for CC welding only. 5 Gun 6 Wire Feeder 7 115 VAC/Contactor Control Cord 8 Gas Cylinder 151 774-B 1 2 3 4 5 6 7 8 OM-1581 Page 11 3-2. Connections With A CV Welding Power Source Having Separate 115 VAC And Contactor Control Receptacles 1 Constant Voltage (CV) Welding Power Source 2 Plug Obtain matching plugs for connecting to power source receptacles. 3 Workpiece 4 Voltage Sensing Lead Do not connect to workpiece. 5 Gun 6 Wire Feeder 7 115 VAC/Contactor Control Cord 8 Gas Cylinder 151 775-C 2 3 4 5 6 7 8 1 3-3. Connections With A CC Welding Power Source Having A Contactor Control Receptacle 1 Constant Current (CC) Welding Power Source 2 5-Pin Or Two-Prong Twistlock Plug 3 Workpiece 4 Voltage Sensing Lead 5 Gun 6 Wire Feeder 7 3-Conductor Contactor Control Cord 8 3-Conductor 115 VAC Cord 9 Gas Cylinder 10 115 VAC Plug Obtain plug for wire feeder. 151 776-B 1 2 3 4 5 6 7 9 8 10 OM-1581 Page 12 3-4. Connections With A CC Welding Power Source And A 115 VAC/12 VDC Secondary Contactor 1 Constant Current (CC) Welding Power Source 2 Workpiece 3 Voltage Sensing Lead 4 Gun 5 Wire Feeder 6 3-Conductor 115 VAC Cord 7 3-Conductor Contactor Control Cord 8 5-Pin Plug 9 Secondary Contactor 10 Gas Cylinder 11 115 VAC Plug Obtain plug for wire feeder. 151 777-B 1 2 3 4 5 6 10 7 11 8 9 3-5. Removing Top Cover Of Gun 1 1 Top Cover Push back and lift off as shown. To reinstall cover, set rear of cover in gun, and push cover back, down, and forward until it clicks into position. 802 528 OM-1581 Page 13 3-6. Air-Cooled Gun Connections 3 1 Gun Control Cable Insert plug into Gun Control receptacle, and tighten threaded collar. 2 Gas Hose Connect to Gas fitting on feeder. 3 Weld Cable 4 Weld Cable Terminal In Feeder Connect gun weld cable to weld cable terminal in feeder. 5 Wire Conduit 6 Thumbscrew 7 Wire Conduit Block Loosen thumbscrew, and insert conduit through Wire opening until it bottoms against block. Tighten thumbscrew. Close and latch door. 145 432-B / Ref. 802 536 / Ref. 151 778-B Tools Needed: 5/8, 3/4 in 4 3 7 6 5 1 2 5 Left Side OM-1581 Page 14 3-7. Water-Cooled Gun Connections 1 Gas Hose Connect to Gas fitting on feeder. 2 Water Hose Connect to Water To Gun fitting on feeder (left-hand threads). 3 Wire Conduit 4 Thumbscrew 5 Wire Conduit Block Loosen thumbscrew, and insert conduit through Wire opening until it bottoms against block. Tighten thumbscrew. 6 Gun Control Cable Insert plug into Gun Control receptacle, and tighten threaded collar. 7 Strain Relief Remove strain relief as shown. 8 Power/Water Cable Route cable through strain relief and connect to Weld/Water From Gun outlet on feeder. Reinstall strain relief. Close and latch door. Ref. 151 778-B / 152 456-A 1 2 3 6 8 7 4 3 5 5/8, 1-1/8 in Tools Needed: Left Side 3-8. Air-Cooled Feeder Connections 1 Gas Hose Grommet 2 10 ft (3 m) Gas Hose 3 Rear Of Gas Fitting Route one end of gas hose through Top View 4 7 8 Connect To 1 5 2 4 6 7 3 Rear Panel grommet, and connect hose to rear of Gas fitting in feeder. Connect remaining end of hose to regulator/flowmeter. 4 Weld Cable To Welding Power Source Select and prepare weld cable according to welding power source manual. 5 Weld Cable Grommet 6 Current Sensing (Reed) Relay 7 Weld Cable Terminal In Feeder Route one end of weld cable through grommet, through reed relay, and connect to weld cable terminal in feeder. Connect remaining end of cable to positive (+) weld output terminal on welding power source. 8 Gun Weld Cable Be sure that terminal of welding power source weld cable is in direct contact with terminal from gun weld cable. Close and latch door. Positive (+) Weld Connect To Tools Needed: Output Terminal On Regulator/ Welding Power Source Flowmeter 5/8, 1-1/8 in Re...