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CC Mode GTAW MAX SMAW MAX SMAW 80A ARC CONTROL GTAW MN 0 10 20 30 40 50 60 70 80 90 100 0 100 200 300 400 500 VOLTS B. CV Mode AMPERAGE MAX MIN OM-2251 Page 11 OM-2251 Page 12 6 Minutes Welding 4 Minutes Resting 3-3. Duty Cycle And Overheating Duty Cycle is percentage of 10 minutes that unit can weld at rated load without overheating. If unit overheats, output stops, a Help message is displayed and cooling fan runs. Wait fifteen minutes for unit to cool. Reduce amperage or voltage, or duty cycle before welding. Single Phase Operation: The unit is supplied with a 8 AWG power cord. The rated output with 8 AWG is 300 amps, 32 volts at 40% duty cycle. To achieve 60% duty cycle change cord to 6 AWG. NOTICE . Exceeding duty cycle can damage unit and void warranty. 60% Duty Cycle Overheating 0 15 A or V OR Minutes Reduce Duty Cycle Ref. 216 568-A Notes OM-2251 Page 13 SECTION 4 . INSTALLATION 4-1. Dimensions And Weight Hole Layout Dimensions 24 in (610 A E A 11-3/4 in (298 mm) G mm) F B 1-11/16 in (42 mm) 17 in (432 mm) C 15-3/4 in (400 mm) D C D 19-3/32 in (485 mm) E 8-11/16 in (221 mm) 12-1/2 in (318 mm) F 1-17/32 in (39 mm) 804 801-A B G 1/4-20 UNC -2B thread Weight 80 lb (36.3 kg) 4-2. Selecting a Location loc_2 3/96 - Ref. ST-151 556 / Ref. 803 691-C 1 Lifting Handles Use handles to lift unit. 2 Hand Cart Use cart or similar device to move unit. 3 Rating Information Use rating information on rear panel to determine input power needs. 4 Line Disconnect Device Locate unit near correct input power supply. ! Special installation may be required where gasoline or volatile liquids are present . see NEC Article 511 or CEC Section 20. Movement 1 2 ! Do not move or operate unit where it could tip. Location 4 3 18 in (460 mm) 18 in (460 mm) 1 OM-2251 Page 14 4-3. Connecting 1-Phase Input Power Ref. 804 532-A ! Installation must meet all National and Local Codes . have only qualified persons make this installation. ! Disconnect and lockout/tagout input power before connecting input conductors from unit. ! Always connect green or green/yellow conductor to supply grounding terminal first, and never to a line terminal. The Auto-Line circuitry in this unit automatically adapts the power source to the primary voltage being applied. Check input voltage available at site. This unit can be connected to any input power between 208 and 575 VAC without removing cover to relink the power source. 1 Black And White Input Conductor (L1 And L2) 2 Red Input Conductor 3 Green Or Green/Yellow Grounding Conductor 4 Insulation Sleeving 5 Electrical Tape Insulate and isolate red conductor as shown. 6 Input Power Cord. 7 Disconnect Device (switch shown in the OFF position) 8 Disconnect Device Grounding Terminal 9 Disconnect Device Line Terminals Connect green or green/yellow grounding conductor to disconnect device grounding terminal first. Connect input conductors L1 and L2 to disconnect device line terminals. 10 Overcurrent Protection Select type and size of overcurrent protection using Section 4-5 (fused disconnect switch shown). Close and secure door on disconnect device. Remove lockout/tagout device, and place switch in the On position. 7 6 L1 L2 1 =GND/PE Earth Ground 3 1 8 9 10 Tools Needed: 1 6 5 4 2 3 OM-2251 Page 15 4-4. Connecting 3-Phase Input Power Ref. 804 532-A ! Installation must meet all National and Local Codes . have only qualified persons make this installation. ! Disconnect and lockout/tagout input power before connecting input conductors from unit. ! Always connect green or green/ yellow conductor to supply grounding terminal first, and never to a line terminal. The Auto-Line circuitry in this unit automatically adapts the power source to the primary voltage being applied. Check input voltage available at site. This unit can be connected to any input power between 208 and 575 VAC without removing cover to relink the power source. For Three-Phase Operation 1 Input Power Cord. 2 Disconnect Device (switch shown in the OFF position) 3 Green Or Green/Yellow Grounding Conductor 4 Disconnect Device Grounding Terminal 5 Input Conductors (L1, L2 And L3) 6 Disconnect Device Line Terminals Connect green or green/yellow grounding conductor to disconnect device grounding terminal first. Connect input conductors L1, L2, and L3 to disconnect device line terminals. 7 Overcurrent Protection Select type and size of overcurrent protection using Section 4-5 (fused disconnect switch shown). Close and secure door on disconnect device. Remove lockout/tagout device, and place switch in the On position. = GND/PE Earth Ground L1 2 1 L2 L3 3 3 4 5 6 7 Tools Needed: 4-5. Electrical Service Guide NOTICE . INCORRECT INPUT POWER can damage this welding power source. Phase to ground voltage shall not exceed +10% of rated input voltage. NOTICE . Actual input voltage should not be 10% less than minimum and/or 10% more than maximum input voltages listed in table. If actual input voltage is outside this range, output may not be be available. Failure to ...