Assessments - , GPA:
(
)
)
Fabricante : Hobart Welding Products
Arquivo Tamanho: 918.91 kb
Arquivo Nome : o944g_hob.pdf
Língua de Ensino: 
O documento está colocado, por favor, espere
 |
O documento está colocado, por favor, espere
Facilidade de uso
802 456 1 2 3 45 Tools Needed: 3/8, 7/16 in OM-944 Page 12 Return To Table Of Contents 4-3. Process/Polarity Table Process Polarity Cable Connections Cable To Gun Cable To Work GMAW . Solid wire with shielding gas DCEP . Reverse polarity Connect to positive (+) output terminal Connect to negative (.) output terminal FCAW . Self-shielding wire . no shielding gas DCEN . Straight Polarity Connect to negative (.) output terminal Connect to positive (+) output terminal 4-4. Changing Polarity 1 Lead Connections For Direct Current Electrode Negative (DCEN) 2 Lead Connections For Direct Current Electrode Positive (DCEP) Always read and follow wire manufacturer’s recommended polarity, and see Section 4-3. Close door. Ref. 209 228 / Ref. 209 229 DCEN DCEP Electrode Negative For Flux Core Wire Electrode Positive For Solid Wire CHANGING POLARITY 1 2 Return To Table Of Contents OM-944 Page 13 4-5. Installing Gas Supply 6 1 2 3 Argon Gas Or Mixed Gas 4 5 7 DO NOT use Argon/Mixed gas regulator/flowmeter with CO2 shielding gas. See Parts List for optional CO2 gas regulator/flowmeter. 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 Regulator/Flowmeter Gas Hose Connection 6 Welding Power Source Gas Hose Connection Connect customer supplied gas hose between regulator/flowmeter gas hose connection, and fitting on rear of welding power source. 7 Flow Adjust Typical flow rate is 20 cfh (cubic feet per hour). Check wire manufacturer’s recommended flow rate. Tools Needed: 5/8, 1-1/8 in Ref. 802 028-A / 802 441 OM-944 Page 14 Return To Table Of Contents 4-6. Selecting A Location And Connecting Input Power For 115 VAC Model 1 Rating Label 2 Grounded Receptacle A 115 volt, 20 ampere individual branch circuit protected by time-delay fuses or circuit breaker is required. 3 Plug From Unit Select extension cord of 14 AWG for up to 50 ft (15 m) or 12 AWG for 50 up to 200 ft (61 m). Special installation may be required where gasoline or volatile liquids are present . see NEC Article 511 or CEC Section 20. 21 3 18 in (460 mm) 18 in (460 mm) 802 442-A Return To Table Of Contents OM-944 Page 15 4-7. Selecting A Location And Connecting Input Power For 230 VAC Model 1 Rating Label Supply correct input power. 2 Plug (NEMA 6-50P) 3 Receptacle (NEMA 6-50R) Connect plug to receptacle. 4 Line Disconnect Device See Section 4-8. Special installation may be required where gasoline or volatile liquids are present . see NEC Article 511 or CEC Section 20. ssb2.2* 1/94 . 802 443-A / Ref. 802 085 18 in (457 mm) of space for airflow L1L2 2 230 VAC, 1 Always connect grounding conductor first. = GND/PE 3 Do not move or operate unit where it could tip. L1 L2 4 1 OM-944 Page 16 Return To Table Of Contents Return To Table Of Contents OM-944 Page 17 4-8. Electrical Service Guide For 230 VAC Model Input Voltage 230 Input Amperes At Rated Output 20 Max Recommended Standard Fuse Or Circuit Breaker Rating In Amperes 20 Min Input Conductor Size In AWG/Kcmil 14 Max Recommended Input Conductor Length In Feet (Meters) 66 (20) Min Grounding Conductor Size In AWG/Kcmil 12 Reference: 1996 National Electrical Code (NEC) S-0092-J 4-9. Installing Wire Spool And Adjusting Hub Tension When a slight force is needed to turn spool, tension is set. 1/2 in Tools Needed: 803 012 / 803 013 -B / Ref. 802 971-C Installing 8 in (203 mm) Wire Spool Installing 4 in (102 mm) Wire Spool When a slight force is needed to turn spool, tension is set. Retaining ring used with 8 in (203 mm) spool only. Adapter used with 8 in (203 mm) spool only. OM-944 Page 18 Return To Table Of Contents 4-10. Threading Welding Wire 1 Wire Spool 2 Welding Wire 3 Inlet Wire Guide 4 Pressure Adjustment Knob 5 Drive Roll 6 Gun Conduit Cable Lay gun cable out straight. Tools Needed: 6 1 3 4 5 Pull and hold wire; cut off end. 4 in (102 mm) Remove gun nozzle and contact tip. Open pressure assembly. Push wire thru guides into gun; continue to hold wire. Hold wire tightly to keep it from unraveling. Ref. 802 444-C WOOD Feed wire to check drive roll pressure. Tighten knob enough 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 1 2 3 4 Use pressure indicator scale to set a desired drive roll pressure. Pressure Indicator Scale Tighten 1 2 3 4 Be sure that wire is positioned in proper feed roll groove. Close and tighten pressure assembly, and let go of wire. Be sure that tip matches wire diameter. Reinstall contact tip and nozzle. Return To Table Of Contents OM-944 Page 19 SECTION 5 . OPERATION 5-1. Controls 1 Voltage Switch The higher the selected number, the thicker the material that can be welded (see weld setting label in welding power source or Section...