OM-184 693C March 2000 Processes MIG (GMAW) Welding Description Feeder Gun Olympic 30A
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.
TABLE OF CONTENTS SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1. Symbol Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2. Arc Welding Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3. Additional Symbols for Installation, Operation, and Maintenance . . . . . . . . . . . . . . . .
SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING som _nd_4/98 1-1. Symbol Usage Means Warning! Watch Out! There are possible hazards with this procedure! The possible hazards are shown in the adjoining symbols. Marks a special safety message. 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. 1-2.
ARC RAYS can burn eyes and skin. Arc rays from the welding process produce intense visible and invisible (ultraviolet and infrared) rays that can burn eyes and skin. Sparks fly off from the weld. Wear a welding helmet fitted with a proper shade of filter to protect your face and eyes when welding or watching (see ANSI Z49.1 and Z87.1 listed in Safety Standards). Wear approved safety glasses with side shields under your helmet.
1-3. Additional Symbols For Installation, Operation, And Maintenance FIRE OR EXPLOSION hazard. Do not install or place unit on, over, or near combustible surfaces. Do not install unit near flammables. MOVING PARTS can cause injury. Keep away from moving parts such as fans. Keep all doors, panels, covers, and guards closed and securely in place. Do not overload building wiring – be sure power supply system is properly sized, rated, and protected to handle this unit.
1-5. EMF Information Considerations About Welding And The Effects Of Low Frequency Electric And Magnetic Fields Welding current, as it flows through welding cables, will cause electromagnetic fields. There has been and still is some concern about such fields.
SECTION 2 – INSTALLATION 2-1. Specifications Wire Diameter Range .025 Thru 1/16 in (0.6 Thru 1.6 mm) Aluminum Wire .025 Thru .045 in (0.6 Thru 1.1 mm) Hard Or Cored Wire Approximate Wire Feed Range Cooling Method 70 To 875 ipm (1.7 To 22.2 mpm) NOTE Air Cooled Maximum Spool Size Weld Circuit Rating Overall Dimensions 4 in (102 mm) Diameter 100 Volts, 200 Amperes, 100% Duty Cycle Using Argon Shielding Gas Length: 15-3/8 in (390 mm) Width: 2-1/2 in (64 mm) Height: 10-3/4 in (273 mm) Weight 2.
2-4. Installing Wire Spool And Threading Welding Wire 1 2 3 4 Top Cover Canister Canister Cover Thumbscrew (Canister Cover) Loosen thumbscrew and remove cover. 5 8 Wire Spool Loosen wire from spool, cut off bent wire, and pull 6 in (150 mm) of wire off spool. 7 6 Pressure Roll Assembly Lift arm and open pressure roll assembly. 7 8 Canister Inlet Guide Drive Roll Groove For wire sizes .035 in (0.9 mm) and smaller use small groove, and .047 in (1.2 mm) and 1/16 in (1.6 mm) use large groove.
2-6. Connecting To BETA-MIG 251 Welding Power Source 1 Tools Needed: 1-1/8, 5/8 in Spool Gun Control Module See BETA-MIG 251 Owner’s Manual for spool gun control module installation instructions. 2 Gas Hose Connect fitting to regulator/flowmeter (see Section 2-7). 4 3 _ + Trigger Control Cord Insert plug into receptacle, and tighten threaded collar. 3 4 Weld Cable Connect to positive (+) weld output terminal on welding power source according to its Owner’s Manual. 1 2 801 758-A 2-7.
2-8. Adjusting Drive Roll And Spool Brake Pressure 1 2 3 Top Cover Canister Cover 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. 5 Reinstall canister cover. Thread welding wire (see Section 2-4).
SECTION 3 – OPERATION 3-1. Controls 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 3 1 2 Ref. 147 741-B 3-2.
SECTION 4 – MAINTENANCE & TROUBLESHOOTING 4-1. Routine Maintenance Maintain more often Disconnect power before maintaining. during severe conditions. 3 Months Replace Damaged Or Unreadable Labels Clean And Tighten Weld Terminals Replace Damage Gas Hose Repair Or Replace Cracked Cables And Cords 6 Months Blow Out Or Vacuum Inside Clean Drive Rolls 4-2. Changing Contact Tip And Liner Remove top cover and open pressure roll assembly as shown in Section 4-3.
4-3. Gun Drive Assembly Maintenance Retract wire onto spool. 1 2 Setscrew Current Pick-Up Tab This tab helps prevent burnback caused by welding arcs inside the contact tip. This tab may be removed to provide an insulated drive roll. (If tab is removed, a smaller diameter contact tip is recommended. See options in Parts List.) Lightly grease top of tab before reinstalling. 3 3 Drive Roll Use wire brush to clean drive roll.
4-4. Replacing Canister Inlet Guide 1 2 Top Cover Pressure Roll Assembly Cut off welding wire where it enters pressure roll assembly area. 1 3 Nozzle Pull wire out nozzle. 4 5 Thumbscrew Canister Cover Loosen thumbscrew and remove cover. 7 6 5 4 2 6 7 Wire Spool Spool Brake Thumbnut Loosen thumbnut, retract wire onto spool, secure, and remove spool. 8 Canister Inlet Guide Turn counterclockwise to remove. Install new guide. Reinstall spool and thread welding wire (see Section 2-4).
4-6. Replacing Contact Tip Adapter 1 Barrel Extension Remove as shown. 2 3 8 7 Contact Tip Compression Nut To remove, see Section 4-2. 6 4 5 6 7 8 5 4 3 2 Liner Contact Tip Adapter O-Ring Head Tube Head Tube Setscrew Loosen setscrews and remove adapter. 1 Install new o-ring and adapter, and tighten setscrews. Reinstall contact tip, compression nut, and nozzle. Tools Needed: 3/32 in 150 430-B 4-7.
SECTION 5 – ELECTRICAL DIAGRAMS 195 712-A Figure 5-1.
Notes OM-184 693 Page 15
OM-184 693 Page 16 Figure 6-1. Complete Assembly 78 77 *Includes Items 6 & 7 **Includes Item 71 79 3 76 16 14 15 13 6 75 74 73 72 12 17 11 18 19 20 10 21 22 9 24 23 8 25 26 27 28 33 29 68 31 30 69** 23 83 32 34 35 70 35 62 61 58 47 46 67 45 44 59 60 71 42 43 48 41 63 66 57 49 50 51 65 64 52 53 54 not available unless listed.
Item No. Dia. Mkgs. Part No. Description Quantity Figure 6-1. Complete Assembly (Product No. 130 831-01-9) . . . 1 . . . . . . . . . . . . . . . 133 479 . . . 2 . . . . . . . . . . . . . . . 135 196 . . . 3 . . . . . . . . . . . . . . . 133 362 . . . 4 . . . . . . . . . . . . . . . 182 824 . . . 5 . . . . . . . . . . . . . . . 198 810 . . . 6 . . . . . . R4 . . . . . 137 854 . . . 7 . . . . . PB1 . . . . 000 369 . . . 8 . . . . . . . . . . . . . . . 073 476 . . . 9 . . . . . . . . . . . . . . .
Item No. Dia. Mkgs. Part No. Description Quantity Figure 6-1. Complete Assembly (Continued) . . . 47 . . . . . . . . . . . . . . . 602 209 . . . 48 . . . . . . . . . . . . . . . 602 154 . . . 49 . . . . . . . . . . . . . . . 132 527 . . . 50 . . . . . . . . . . . . . . . 148 488 . . . 51 . . . . . . . . . . . . . . . 132 529 . . . 52 . . . . . . . . . . . . . . . 148 489 . . . 53 . . . . . . . . . . . . . . . 132 524 . . . 54 . . . . . . . . . . . . . . . 000 364 . . . 55 . . . . . . . . . . . . . . .
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. Warranty Questions? Call 1-877-HOBART1 for your local Hobart distributor. Service You always get the fast, reliable response you need. Most replacement parts can be in your hands in 24 hours.
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, retail or service location: Contact your Distributor for: Welding Supplies and Consumables Call 1-877-Hobart1 or visit our website at www.HobartWelders.
