MAC TOOLS MW 145 Owner'S Manual Download Page 1 | Manualshive

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Summary of Contents for MW 145

Page 1: ... these instructions and all safety blocks carefully Have only trained and qualified persons install operate or service this unit Call your distributor if you do not understand the directions U Give this manual to the operator U For help call your distributor Too fi cover 5 94 ST 801 021 PRINTED IN USA ...

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Page 3: ... visible and invisible ultraviolet and infrared rays that can burn eyes and skin Noise from some processes can damage hearing Chipping grinding and welds cooling throw off pieces of metal or slag FUMES AND GASES can be hazardous to your health Welding produces fumes and gases Breathing these fumes and gases can be hazardous to your health 1 Keep your head out of the fumes Do not breathe the fumes ...

Page 4: ...eld when working on a battery TO EXPLODE BATTERY ACID can 2 Stop engine before disconnecting or connecting battery burn eyes and skin cables 3 Do not allow tools to cause sparks when working on a battery Batteries contain acid and generate explosive 4 Do not use welder to charge batteries or jump start vehicles gases 5 Observe correct polarity and on batteries STEAM AND PRESSURIZED HOT 1 If the en...

Page 5: ...ld as understanding does not yet allow us to interpret the evidence in a possible single coherent framework Even more frustrating it does not yet About Pacemakers allow us to draw definite conclusions about questions of possible The above procedures are among those also normally risk or to ofter clear science based advice on strategies to minimize recommended for pacemaker wearers Consult your doc...

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Page 7: ...tion SECTION 2 SPECIFICATIONS Table 2 1 Welding Power Source Specifications Description Type Of Input Power Single Phase 60 Hz At 115 Volts AC Type Of Output Direct Current Constant Voltage DC CV Max Open Circuit Voltage 30 Volts DC Control Circuit Voltage At Gun 24 Volts DC Welding Processes Gas Metal Arc GMAW Flux Cored Arc FCAW And Gas Tungsten Arc GTAW Welding Calculated Speed Range At No Load...

Page 8: ...put capabilities of the welding power source Curves of other settings fall be tween the curves shown 30 U 0 20 0 0 10 0 0 DC AMPERES ssbli 10 91 ST 173 778 50 100 150 200 250 WELDING LO Do not weld at r NGER THAN RATED DUTY CYCLE can damage unit or gun and void warranty ated load longer than shown below wlwarn8 2 8 93 Figure 2 2 Duty Cycle OM 173 123 Page 2 ...

Page 9: ... 9 l6in Figure 3 1 Installing The Running Gear Install running gear as shown See Parts List for parts descriptions both ends of chain are in slots in and chain is tight around cylinder a Remove paint from axle grooves before installing retaining rings a 51 801 025 OM 173 123 Page 3 ...

Page 10: ...rn4 1 9 91 Tools Needed 5 8 1 1 8 in Argon Gas Or Mixed Gases Obtain gas cylinder and chain to running gear wall or other station ary 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 Gas Hose Connectio...

Page 11: ... Changeover Label 2 Process Jumper Link Place link in correct position for de sired welding process Close door Ref ST 801 029 IIIII t1 1 2 in Figure 3 4 Selecting Welding Process c STRAIGHT I REVERSE For Solid For Flux Sleet Or Cored Wires Aluminum I POLARITY POLARITY I DCEN DCEP Process Process GMAW FCAW Wires GUN POLARITY CHANGEOVER 2 Tools Needed Ref ST 801 029 ciii i ij 3 8 in 1 Polarity Chang...

Page 12: ...rigger Leads Insert leads one at a time through grommet on front panel Connect leads to matching leads in unit 4 Gun Torch End Loosen securing nut Insert end through front panel opening until it bottoms against drive assembly Tighten nut Close door z 1 2 in Figure 3 6 Gun Torch Connections Ref ST801 022 3 3 OM 173 123 Page 6 ...

Page 13: ... 4 115 Volts 15 Amperes Plug From Unit For9O amperes output connect at tached plug to a properly grounded receptacle of a 20 ampere individu al branch circuit protected by time delay fuses or circuit breaker is re quired Select extension cord of 12 AWG for up to 75 ft 23 m or 10 AWG for upto 140ft 46m 5 115 Volts 30 Amperes Plug Supplied With Unit For 140 amperes output remove the 115 volts 15 amp...

Page 14: ...ush retain ing pin through hub Remove and retain 7 Tools Needed Figure 3 8 Installing Wire And Adjusting Tension 7 Hub Tension Nut Grasp spool in one hand and turn while using a wrench to adjust hub tension nut When a slight force is needed to turn spool tension is set Close and secure pressure roll assembly Thread welding wire see Figure 3 9 Close door Rel ST iSO 093 S 0499 ST 801 029 N OTE If hu...

Page 15: ...ssure assembly and let go of wire Remove gun nozzle and contact tip POWER Set switch Press gun trigger until wire comes out of gun Reinstall contact tip and nozzle lll Feed wire to check drive roll pressure Tighten knob enough to prevent slipping Cut oft wire Close and latch door Ref ST 801 029 I Ref ST i 72 500 S 0627 A Figure 3 9 Threading Welding Wire B Threading Welding Wire 1 23 5 6 Open pres...

Page 16: ... welding helmet with a correct shade of filter see ANSI Z49 1 sb3 1 10 91 Figure 4 1 Safety Equipment 1 Wire Speed Control Ref ST 801 023 ST 172 500 Tools Needed Use control to select a wire feed speed As Voltage switch setting increases wire speed range also increases The numbers around the control are not a wire feed speed see rear cover Use switch to select an arc voltage The higher the selecte...

Page 17: ... 93 Table 5 1 Maintenance Schedule Time Maintenance Before each use Tighten all connections Check gun and clean nozzle After each spool of wire Blow out gun liner Clean and check wire drive parts replace as necessary Every 3 months Tape or replace cracked cables clean and tighten connections Replace unreadable labels Every 6 months Blow out or vacuum inside of unit 5 1 Overload Protection WARNING ...

Page 18: ...d remove contact tip from workpiece Check contact tip and replace if damaged Turn On unit to continue operation twarn5 1 9 91 Turn Oft and unplug unit Unlatch door remove handle and remove door wrapper 1 Circuit Board PCi 2 Fuse Fl See Parts List For Rating If this fuse opens the wire drive motor does not run Pull fuse from fuse holder on PCi To reinstall push fuse into fuse holder Reinstall wrapp...

Page 19: ...ew 9 Smooth Groove For Hard Wire 10 Drive Roll Remove drive roll as shown Use a wire brush to clean drive roll Push drive roll onto shaft with de sired groove in Turn drive roll so one setscrew faces flat side of shaft and tighten both setscrews 11 Knurled Groove For Flux Cored Wire 12 Wire Inlet Guide Remove guide by pressing on barbed area or cutting off one end near housing and pulling it out o...

Page 20: ...se injury and damage equipment Point gun away from people and in a safe direction when blowing out with compressed air swarnlo 1 10 91 READ SAFETY BLOCKS at start of Section 5 before proceeding 3 4 5 1 2 Tools Needed 3 85 l6in Turn Off and unplug unit 1 Wire Spool Cut welding wire off at contact tip Retract wire onto spool and se cure 2 Gun Securing Nut Disconnect trigger leads Loosen nut and remo...

Page 21: ... Adjust drive roll pressure 3 8 Readjust hub tension 3 8 Replace contact tip if blocked 5 3 Clean or replace wire inlet guide or liner if dirty or plugged 5 2 5 3 Replace drive roll or pressure bearing if worn or slipping 5 2 Secure gun trigger leads or repair leads or replace trigger switch 3 6 Check and replace motor fuse Fl if open 5 1 B Check and clear any restrictions at drive assembly and li...

Page 22: ...SI WORK 7 A PLGI 6 TE2 Figure 6 2 Wiring Diagram For Welding Power Source TIC MIC OM 173 l2aPage 16 ...

Page 23: ...0 r w a a 0 0 It 0 0 a a Cu 0 I Li It 0 0 0 I a 0 0 Li J 0 0 Cu 0 Cu 0 Li a I U a C C Lii Cu a 0 0 I IL Li_I in 0 0 C 0 I PLO I a C iO 0 lii C a C a 1 I C 0 0 a C Cu PLG2 17 A PLG2 I 6 16 A PLG2 2 4 3 16 A PLG2 5l 2 Ii A P162 6 I 12131415 6171819 I0 _ _ jl2I 131 4 PC I PC2 PC I RC3 P3 POWER CORD GND ...

Page 24: ...26 SECTION 7 PARTS LIST Figure 7 1 Main Assembly Ref ST 8O1 027 42 41 43 Fig 7 3 51 45 53 52 50 47 49 OM 173 123 Page 18 ...

Page 25: ... 172 485 Side Panels 3 172487 TankBracket 4 602 387 Cylinder Chain 5 172486 Rear Panel 6 172484 Base 7 172490 Axle 8 121 614 Retaining Ring 9 602250 Washer 10 090693 Wheel 11 109318 Caster 12 172 489 Caster Bracket 13 604538 Washer 14 602211 Washer 15 604537 Nut 6 7 8 9 10 11 12 13 14 15 16 17 18 19 010 915 172476 038 890 172478 602 241 038652 129 696 172 543 073 426 080 388 173299 118 936 110 160...

Page 26: ...s Material Thickness 22 ga 20 ga 18 ga 16 ga 14 ga 1 8 3 16 1 4 ER7OS 6 Mild Steel CO2 20 cth 023 Range 1 2 2 2 3 3 3 3 Feed Speed 25 30 35 40 45 60 60 60 030 Range 2 2 3 3 3 3 3 Feed Speed 20 20 25 25 30 30 40 035 Range 3 3 3 3 4 Feed Speed 20 25 25 25 20 ER7OS 6 Mild Steel 75 Argon 25 CO2 20 cfh 023 Range 1 1 2 2 3 3 4 4 Feed Speed 40 40 50 50 65 75 95 100 030 Range 1 2 2 3 3 3 4 Feed Speed 35 3...

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