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MMWMP242DVI

OWNER’S

MANUAL

3/2019

WARNING:

Read carefully and understand all

ASSEMBLY AND OPERATION

INSTRUCTIONS

before operating. Failure to follow the safety rules and other

basic safety precautions may result in serious personal injury.

Summary of Contents for MMWMP242DVI

Page 1: ...S MANUAL 3 2019 WARNING Read carefully and understand all ASSEMBLY AND OPERATION INSTRUCTIONS before operating Failure to follow the safety rules and other basic safety precautions may result in serio...

Page 2: ...re considered consumable items and are not covered under warranty 1 year Parts and Labor on MIG gun parts except those listed under normal wear items cables regulator and plasma torch except those lis...

Page 3: ...arings ca gov WARNING This product can expose you to chemicals including Lead which is known to the State of California to cause cancer and birth defects or other reproductive harm For more informatio...

Page 4: ...nd fingers away from moving parts and stay away from the drive rolls Do not point torch at any body part of yourself or anyone else Always use this welder in the rated duty cycle to prevent excessive...

Page 5: ...ct other people from the arc rays emitted from your welding Warn people in your welding area when you are going to strike an arc so they can protect themselves Fire Hazards Do not weld on containers o...

Page 6: ...bject Keep cylinders away from welding or electrical circuits Use the proper regulators gas hose and fittings for the specific application Do not look into the valve when opening it Use protective cyl...

Page 7: ...r and gas hose for easy connection for MIG welding plus a weld cable and electrode holder for DC stick welding Directly connect this unit to a 230V NEMA 6 50R receptacle or attach the supplied 120V ad...

Page 8: ...lding power source to the SPOOL GUN OPTIONAL WITH MMWMP242DVIB The Spool Gun is typically used for welding aluminum The soft aluminum wire has a hard time feeding consistently in the standard MIG torc...

Page 9: ...installation of receptacle This welder must be grounded while in use to protect the operator from electrical shock Do not remove grounding prong or alter the plug in any way Use only the supplied adap...

Page 10: ...e outside edge of the wire spool and bend it over to hold the wire in place Remove the spool of wire from the drive compartment of the welder 4 4 Remove the drive roller by turning the drive roll knob...

Page 11: ...m your wire spool If the whole spool is rusty discard it 5 2 Installing the wire 5 2 1 Remove the nozzle and contact tip from the end of the torch assembly See Figure 3 5 2 2 Make sure the proper groo...

Page 12: ...wing nut you may need to repeat these steps until proper spool tension is achieved 5 2 7 If TOO MUCH tension is applied to the wire spool the wire will slip on the drive roller or will not be able to...

Page 13: ...tage switch to the voltage setting recommended for the gauge metal that is to be welded Refer to the set up chart on the back side of the drive compartment door The welding wire is electrically hot wh...

Page 14: ...ject Keep cylinders away from welding or electrical circuits Use the proper regulators gas hose and fittings for the specific application 7 1 Polarity Changing When MIG wire is used shielding gas is r...

Page 15: ...onnection Use a wrench to snug up the connection 7 1 6 Open the Gas Bottle Valve on the cylinder of gas 7 1 7 Turn the Gas Flow Adjuster on the regulator so that the gas flow rate is set at approximat...

Page 16: ...O2 regulator adapter will be needed Stainless Steel Use a mixed gas consisting of Helium Argon and CO2 Aluminum or Bronze Use 100 Argon ASSEMBLY Electrical Shock Electric shock can kill Always turn th...

Page 17: ...and move the Weld Power Cable to the negative weld output connection 6 Follow the Wire Feed Welding Set up instructions in the Operating section SPOOL GUN ASSEMBLY OPTIONAL WITH MMWMP242DVIB 1 This un...

Page 18: ...4 Follow the STICK WELDING SET UP instructions in the Operating Instructions section OPTIONAL TIG TORCH ASSEMBLY OPTIONAL WITH MMWMP242DVIB Be aware that the TIG TORCH will be electrically HOT when th...

Page 19: ...er s power cord directly to a properly grounded 230 120 VAC 60 HZ Single Phase 50 20 Amp input power supply UNDERSTANDING THE FRONT PANEL Reference Description 1 Home Start Button 2 Previous Screen Bu...

Page 20: ...ECTION KNOB until INFORMATION screen is displayed 1 7 2 Push in the MULTI FUNCTION ADJUSTMENT SELECTION KNOB 1 7 3 Software version is displayed 1 7 4 Push the START BUTTON to exit 1 8 TO PERFORM A RE...

Page 21: ...u are welding stainless steel 2 2 2 1 Connect the Weld Power Cable See Figure 8 or follow the onscreen visual to the Positive Weld Output Connection Press the MULTI FUNCTION ADJUSTMENT SELECTION KNOB...

Page 22: ...minum wire without a spool gun use the MIG MANUAL setup 2 2 3 1 1 3Use the MULTI FUNCTION ADJUSTMENT SELECTION KNOB to select the thickness of material to be welded Press the MULTI FUNCTION ADJUSTMENT...

Page 23: ...voltage 2 2 3 1 2 6You can adjust other parameters 2 2 3 1 2 6 1 Press the MULTI FUNCTION ADJUSTMENT SELECTION KNOB Wire Speed will no longer be highlighted but will have a box around it Turn the MULT...

Page 24: ...2 5 2 You can adjust other parameters 2 2 5 2 1 Press the MULTI FUNCTION ADJUSTMENT SELECTION KNOB Wire Speed will no longer be highlighted but will have a box around it Turn the MULTI FUNCTION ADJUS...

Page 25: ...o welding mode 3 DC STICK WELDING SET UP 3 1 Press the START BUTTON 3 2 Turn the MULTI FUNCTION ADJUSTMENT SELECTION KNOB until the STICK screen is displayed 3 3 Push in the MULTI FUNCTION ADJUSTMENT...

Page 26: ...TI FUNCTION ADJUSTMENT SELECTION KNOB to turn VRD On or Off Push in the MULTI FUNCTION ADJUSTMENT SELECTION KNOB to confirm your selection 3 9 3 2 The screen will automatically default back to your se...

Page 27: ...est for you 3 POSITION OF THE TORCH TO THE WORK PIECE There are two angles of the torch nozzle in relation to the work piece that must be consider when welding 3 1 Angle a can be varied but in most ca...

Page 28: ...ven voltage setting by increasing or decreasing the wire speed slightly Repeat this tune in procedure if you select a new voltage setting a different wire diameter or a different roll of wire 4 WELDIN...

Page 29: ...ew welder and better at laying some simple weld beads you can begin to try some different weld bead types The STRINGER BEAD is formed by traveling with the torch in a straight line while keeping the w...

Page 30: ...pt at zero but angle A will generally range from 45 to 60 degrees to provide better puddle control The OVERHEAD POSITION is the most difficult welding position Angle A see HOLDING THE TORCH should be...

Page 31: ...weld bead before making another pass or the next pass will be of poor quality Fillet Weld Joints Most fillet weld joints on metals of moderate to heavy thickness will require multiple pass welds to p...

Page 32: ...ng the same thickness material with a continuous bead 4 5 3 The LAP SPOT METHOD directs the welding arc to penetrate the bottom and top pieces at the same time right along each side of the lap joint s...

Page 33: ...rally easier faster and allows for better penetration If possible the work piece should be positioned so that the bead will run on a flat surface 1 2 Preparing the Joint Before welding the surface of...

Page 34: ...tting required for every situation The type and thickness of metal and the position of the work piece determine the electrode type and the amount of heat needed in the welding process Heavier and thic...

Page 35: ...tice welds should be done on scrap metal that can be discarded Do not attempt to make any repairs on valuable equipment until you have satisfied yourself that your practice welds are of good appearanc...

Page 36: ...ing sound eggs frying To lay a weld bead only two movements are required downward as the electrode is consumed and in the direction the weld is to be laid as in the following figure 6 3 Types of weld...

Page 37: ...ng an arc has been learned the next step is learning how to run a good bead The first attempts in practice will probably fall short of acceptable weld beads Too long of an arc will be held or the trav...

Page 38: ...your welder s power cord directly to a properly grounded 230 VAC 60 HZ Single Phase 50 Amp input power supply Or when using the supplied 120V adapter connect the 120V Adapter to a properly grounded 12...

Page 39: ...he joint to be welded by pushing the torch 8 6 Insert filler metal in the leading edge of the weld puddle as needed MAINTENANCE Maintain your welder It is recommended that the general condition of any...

Page 40: ...roller Wire feeds inconsistently Torch liner is plugged Clear or replace torch liner Wire feeds inconsistently Cont Wire diameter may vary on spool of wire causing the wire to catch in the contact ti...

Page 41: ...is not transferring to the arc Remove and reconnect the MIG torch to make certain it is completely installed into the MIG connector Wire speed setting is incorrect Refer to the label inside the wire...

Page 42: ...Page of 44 42 DIAGRAM PARTS LIST...

Page 43: ...nel 1 18 105200136 Quick Connect Socket 2 19 105200059 MIG gun switch socket 1 20 105200300 Potentiometer knob small 1 21 105200057 MIG Weld Power Cable 1 22 155200066 Flange plate 1 23 155200071 Pane...

Page 44: ...Page of 44 44 Distributed by CORNWELL QUALITY TOOLS 667 SEVILLE RD WADSWORTH OH 44281 www cornwelltools com Made in China...

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