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OM-185 480B
March 1999
Processes
MIG (GMAW) Welding
Description
Weld Control For Spoolmatic Gun
HWC-115A
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From Hobart to You Thank you and congratulations on choosing Hobart. Now you can get the job done and get it done right. We know you don’t have time to do it any other way. This Owner’s Manual is designed to help you get the most out of your Hobart products. Please take time to read the Safety precautions. They will help you protect yourself against potential hazards on the worksite. We’ve made installation and operation quick and easy. With Hobart you can count on years of reliable service with
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SECTION 1 – SAFETY PRECAUTIONS FOR ARC WELDING safety_som1 4/95 OM-185 480 – 2/97 1-1. Symbol Usage Marks a special safety message. Means Warning! Watch Out! There are possible hazards with this procedure! The possible hazards are shown in the adjoining symbols. Means NOTE; not safety related. This group of symbols means Warning! Watch Out! possible ELECTRIC SHOCK, MOVING PARTS, and HOT PARTS hazards. Consult symbols and related instructions below for necessary actions to avoid the hazards.
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4. Never drape a welding torch over a gas cylinder. CYLINDERS can explode if damaged. 5. Never allow a welding electrode to touch any cylinder. Shielding gas cylinders contain gas under high pressure. If damaged, a cylinder can explode. 6. Never weld on a pressurized cylinder – explosion will result. Since gas cylinders are normally part of the welding 7. Use only correct shielding gas cylinders, regulators, hoses, and process, be sure to treat them carefully. fittings designed for the specific
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OVERUSE can cause OVERHEATED SIGNIFICANT DC VOLTAGE exists after EQUIPMENT. removal of input power on inverters. 1. Allow cooling period. 1. Turn Off inverter, disconnect input power, and 2. Reduce current or reduce duty cycle before discharge input capacitors according to starting to weld again. instructions in Maintenance Section before 3. Follow rated duty cycle. touching any parts. STATIC ELECTRICITY can damage parts on circuit boards. BUILDUP OF SHIELDING GAS can harm 1. Put on grounded wri
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SECTION 2 – INSTALLATION 2-1. Typical Process Connections Use gun Owner’s Manual when making connections. NOTE 40 ft (12 m) Gas Hose 30 ft (9 m) Control Cord 115 Volt Control 30 ft (9 m) Weld Power Cable Constant current and/or constant voltage transformer and engine-driven DC power sources. If the power source does not have a weld output Work contactor, the optional contactor kit should be Voltage Sensing Lead For CC Mode ordered. Weld Power Cable (Not Included) 10 ft (3 m) Contactor Cord 10 ft
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2-3. Voltage Sensing Lead Connections And Motor Start Control Adjustment 1 Center Baffle 2 Circuit Board PC1 3 Jumper Plug 4 Receptacle RC3 Internal (INT) and external (EXT) are stamped on PC1 just above RC3. Unit is shipped with jumper plug in internal (INT) position. 5 Potentiometer R70 6 Voltage Sensing Lead 1 For constant current welding (CC), place jumper plug in the CV CC EXT position. Connect voltage 2 INT. EXT. sensing lead to workpiece. Front For constant voltage welding (CV), 3 12 3 pl
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2-4. Weld Cable Connections 1 Lower Left Grommet 2 Positive (+) Weld Output Terminal On Welding Power Source 3 Reed Switch 4 Weld Cable (Customer Supplied) 5 Weld Cable Terminal 6 Weld Power Cable From Gun/Feeder 7 Weld Power Grommet Route weld cable and weld power 1 cable as shown. Be sure lug on 7 weld cable terminal and lug on gun/ feeder weld power cable make contact with each other. 8 Contactor W1 (Optional) 8 Front Panel Rear View Connect weld cable from welding Opening power source to unu
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2-5. Input Power Connection 1 1 Contact Closure Interconnecting Cord And 2 Plug PLG5 3 2 Voltage Sensing Lead Connect to workpiece for CC op- eration (see Section 2-3). 3 Grounded Receptacle A 15 ampere branch circuit pro- tected by time-delay fuses or cir- cuit breakers is required. 4 4 Input Power Cord And Plug PLG4 Connect input power plug to a proper receptacle. ST-801 839 2-6. Contact Closure Connections A. 5-Pin Plug Information For Standard Contact Closure Connections Pin* Pin Information
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SECTION 3 – OPERATION 3-1. 115 Volt Model Controls 1 Run-In Speed Control Use control to select welding wire speed before arc initiation. After arc initiation, the wire feed speed is controlled by the Wire Speed con- trol on the gun/feeder. 2 Power Switch 1 Use switch to turn unit On and Off. 2 wfcontrols_1 1/96 / Ref. ST-144 451-D 3-2. Shielding Gas 1 Shielding Gas Cylinder 2 Valve Open valve on cylinder just before welding. 3 2 Close valve on cylinder when fin- 1 ished welding. 3 Regulator/Flo
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SECTION 4 – MAINTENANCE & TROUBLESHOOTING Disconnect power Maintain more often before maintaining. during severe conditions. 3 Months Clean Replace And Replace Damaged Damaged Or Tighten Gas Hose Unreadable Weld Labels Terminals Repair Or Replace Cracked Cables And Cords 6 Months Blow Out Or Vacuum Inside 4-1. Overload Protection If fuse F1 opens, the weld control shuts down. To check or change F1, proceed as follows: 1 Fuse Holder Cover 2 Fuse (See Parts List For Fuse Size) 2 1 Push And Tu
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4-2. Troubleshooting Trouble Remedy Pressing gun trigger does not ener- Secure plug PLG4 in 115 volts ac receptacle (see Sections 2-5). gize weld control or welding wire. Secure gun plug in Gun Control receptacle RC3 on weld control (see Section 2-2). Check fuse F1 and replace if necessary (see Section 4-1). See Troubleshooting Section of gun and/or welding power source Owner’s Manual. For models without optional contactor Secure plug PLG5 in 5 pin receptacle on welding power source (see Section
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SECTION 5 – ELECTRICAL DIAGRAM SC-155 058-B Figure 5-1. Circuit Diagram OM-185 480 Page 11
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SECTION 6 – PARTS LIST ST-801 837 Figure 6-1. Complete Assembly Of HWC-115A OM-185 480 Page 12 1 2 4 5 3 13 6 7 8 15 12 14 16 11 17 9 10 41 21 22 40 19 18 23 20 25 24 39 26 38 32 33 37 34 35 27 36 34 31 28 30 29
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Item Dia. Part Description Quantity No. Mkgs. No. Figure 6-1. Complete Assembly Of HWC-115A . . . 1 . . . . . . . . . . . . . . . 126 415 . . . CLAMP, saddle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . 2 . . . . . . . . . . . . . . . 126 416 . . . HANDLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . . . 3 . . . . . . . . . . . . . . +137 834 . . . COVER, control box . . .
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Notes 123 123
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Notes 123 123
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Effective January 1, 2000 (Equipment with a serial number preface of “LA” or newer) This limited warranty supersedes all previous Hobart warranties and is exclusive with no other guarantees or warranties expressed or implied. LIMITED WARRANTY – Subject to the terms and conditions * APT, ZIPCUT & PLAZCUT Model Plasma Cutting Warranty Questions? below, Hobart Welding Products., Troy, Ohio, warrants to its Torches original retail purchaser that new Hobart equipment sold after * Remote Controls Call
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Owner’s Record Please complete and retain with your personal records. Model Name Serial/Style Number Purchase Date (Date which equipment was delivered to original customer.) Distributor Address City State Zip Resources Available Always provide Model Name and Serial/Style Number. To locate a Distributor, Contact your Distributor for: retail or service location: Welding Supplies and Consumables Call 1-877-Hobart1 or visit our website at Options and Accessories www.HobartWelders.com Personal Safety
