MAC TOOLS

MW250, Owner'S Manual

Page 1: ...hout the manual before installing operating or maintaining this equipment This unit and these instructions are for use only bypersons trained and experienced in the safe operation of welding equipment...

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Page 3: ...t input power or stop engine before installing or servicing this equipment 5 Properly install and ground this equipment according to its Owners Manual and national state and local codes 6 Turn off all...

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Page 5: ...n Batterymarch Park Quincy MA 02269 EMF INFORMATION TABLE OF CONTENTS SECTION 1 SAFETY INFORMATION SECTION 2 SPECIFICATIONS 1 2 i Volt Ampere Curves 2 2 2 Duty Cycle 2 SECTION 3 INSTALLATION 3 3 1 Ins...

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Page 7: ...safety blocks for each sym bol shown 7 NOTE Special instructions for best oper ation not related to safety Type Of Output Specifications Description Rated Weld Output Type Of Input Power Input Amperes...

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Page 9: ...424 0 WELDING LONGER THAN RATED DUTY CYCLE can damage unit or gun and void warranty Do not weld at rated load longer than shown below wfwarn8 2 8 93 0 Definition 0 Duty Cycle is percentage of 10 minut...

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Page 11: ...Slide boot onto work cable Route cable out front panel opening from inside 3 Negative Output Terminal Connect cable to terminal and cover connection with boot 4 Hardware 5 Work Clamp Route cable throu...

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Page 13: ...5 8 18 right hand threads Obtain and install gas hose 10 Flow Adjust Typical flow rate is 20 cfh cubic feet per hour Check wire man ufacturers recommended flow rate Make sure flow adjust is closed wh...

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Page 15: ...l 4 Negative Output Terminal Always read and follow wire man ufacturers recommended polarity 5 Circuit Breaker CB1 see Section 5 2 6 Pilot Light see Section 5 2 Close door Tools Needed 3 4 11 16in Ref...

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Page 17: ...8 Max Recommended Input Conductor Length In Feet Meters 89 27 117 36 Mm Grounding Conductor Size In AWGIKcmiI 8 10 Reference 1996 National Electrical Code NEC S oo92J 1 Wire Drive Assembly 2 Gun Secu...

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Page 19: ...ation must meet National Electrical Code and all other codes A Positioning Jumper Links swarn3 1 2 93 230 VOLTS 2 3 Check input voltage available at site 1 Jumper Links Access Door Open door 2 Jumper...

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Page 21: ...t conductors in conduit or equivalent between wall receptacle and deenergized line disconnect device Connect grounding conductor first then line input conductors Be sure grounding conductor goes to an...

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Page 23: ...d to do so Do not point gun toward any part of the body other people or any metal when threading welding wire HOT SURFACES can burn skin Allow gun to cool before touching swarn5 1 10 91 swarn2 1 9 91...

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Page 25: ...Remove gun nozzle and contact tip HI I Ill Feed wire to check drive roll pressure Tighten knob enough to prevent slipping P ER e I oOI I Cutoff wire Close and latch door Figure 3 9 Threading And Feed...

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Page 27: ...NG PARTS can cause injury S Keep away from pinch points such as drive rolls Keep all doors panels covers and guards closed and securely in place 9 MAGNETIC FIELDS FROM HIGH CUR RENTS can affect pacema...

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Page 29: ...h range overlap 3 Pilot Light 4 Power Switch Use switch to turn unit On and Off The pilot light comes on when unit is turned on 5 Work Clamp Use wire brush or sandpaper to clean metal at weld joint ar...

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Page 31: ...moving parts fb Keep away from pinch points such as drive rolls Maintenance and troubleshooting to be performed only by qualified persons swarn8 2 2 93 5 1 Routine Maintenance Turn Off all power befor...

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Page 33: ...reset ting CB1 Ref ST SQl 103 B Figure 5 2 Circuit Breaker CB1 Turn Off unit and disconnect Input power 1 Fuse Fl See Parts List For Rating Fl protects the 115 volts ac wind ing of transformer Ti If F...

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Page 35: ...ire 6 Drive Gear Insert wrench and turn screw in or out until drive roll groove lines up with wire guide Vertical Alignment 7 Housing Bolts 8 Weld Cable Terminal Loosen bolts and terminal nut s 9 Wire...

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Page 37: ...FLYING METAL CHIPS AND DIRT can cause injury and damage equipment Point gun away from people and in a safe direction when blowing out with compressed air swarnlo 1 10 91 1 2 Insert new liner Install c...

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Page 39: ...get good metal to metal contact Replace contact tip Wire Drive Gun Troube __5 2 Electrode wire feeding stops during I welding I Connect unit to proper input voltage or check for low line voltage 3 6...

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Page 41: ...170 513 Wrapper 15 047721 Cord Set 16 146161 Base 17 135390 Axle 18 121 614 Retaining Ring 19 091 685 Resistor 605741 Clip 20 008 999 Caster 21 601 871 Jam Nut 22 Front Panel w Cmpts 027 645 Light 035...

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Page 43: ...bly pri 2V 038618 Link 29 010199 Tubing 30 039 047 Output Terminal red 31 039 046 Output Terminal black 32 071 971 Cover OPTIONAL Recommended Spare Parts Be sure to provide Model and Serial Number whe...

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Page 45: ...er motor 14 173435 Motor 15 079 633 Fitting hose 3 l6tbg 16 601 966 Screw 37516 x 1 25 17 145237 CoverStop 18 604 538 Washer flat 19 124778 Knob 20 173619 Carrier drive roll 21 174609 Screw M4 7x12 22...

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Page 47: ...lamp included w ltem 7 Ref ST 801 148 Figure 7 4 MWG 23B Table 7 1 Drive Roll And Wire Guide Kits IMPORTANT Base selection of drive rolls upon the following recommended usages 1 V Grooved rolls for ha...

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