Cornwell Tools MMWP700DVI Owner'S Manual Download Page 13

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13

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17

 

 

 

TROUBLESHOOTING 

SYMPTOM 

POSSIBLE CAUSE 

CORRECTIVE ACTION 

Unit Does Not Power Up 

Unit Is Not Plugged In 

Plug in Unit 

 

Input Power Circuit Breaker Not On 

Reset Input Power Circuit Breaker 

 

Main Power Switch Is Defective 

Replace Main Power Switch 

 

Control Circuit Board is Defective 

Replace Control Circuit Board 

No Pilot Arc 

Low Air Supply Pressure 

Check Air Supply 

 

 

Adjust Gas Pressure Adjuster So the Air 

Pressure Display Reads A Minimum Of 

60 PSI 

 

Protection Indicator Is on Indicating the 

Machine Is in Protection Mode 

See Protection Indicator Is On section 

below. 

 

Missing Torch Head Components 

Replace Missing Torch Head 

Components. See the INSTALLATION 

OF THE CUTTING TORCH 

CONSUMABLES section. 

 

Plasma Torch Trigger Not 

Communicating with the unit 

Pull the trigger. If the work light is not on, 

the torch is not communicating with the 

machine. Check Trigger Connection.   

 

 

Replace or Repair Torch 

 

Plasma Torch May Be Defective 

See if electrode in torch head is spring 

loaded. If it is not, the torch head has 

seized, and the torch will need to be 

replaced. Install an air dryer to your 

compressed air supply to prevent 

corrosion of the torch head. 

 

Arc Start Circuit Defective 

For Assistance, Contact Metal Man 

Work Gear at 888-762-4045 

 

Control Circuit Board is Defective 

Replace Control Circuit Board 

 

Control Transformer Defective 

Replace Control Transformer 

Have Pilot Arc but cutting arc does not 

ignite. 

Work Piece is Painted or Rusty 

Remove All Paint and Rust 

 

Ground Clamp Is Connected Where 

There Is Paint or Rust 

Remove All Paint and Rust So Ground 

Clamp Is Connected to Bare Metal 

 

Ground Clamp Is Not Electrically 

Connected to The Work Piece 

Make Certain the Ground Clamp Is 

Connected to The Work Piece 

Protection Indicator Is On 

The internal temperature is too high. 

Leave power on and let the fan cool the 

unit. Output will continue when the unit 

has cooled. 

 

Input Power Voltage is Too High or Too 

Low. 

Meter  Input  Power  Voltage.  This  unit 

must  be  used  with  input  voltage  that 

ranges from 220V-240V AC (110V-130V 

when operating using the 120V adapter 

cord). 

Cooling Fan is not working 

Unit is not turned on 

Turn on Unit 

 

Cooling fan defective 

Replace the cooling fan 

 

Control Transformer Defective 

Replace Control Transformer 

 

 

 

For Assistance, Contact Metal Man Work Gear at 888-762-4045 

 

 

Summary of Contents for MMWP700DVI

Page 1: ...MANUAL 8 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 seriou...

Page 2: ...onsidered 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 listed...

Page 3: ...our Welding Cutting Environment Keep the environment you will be welding cutting in free from flammable materials Always keep a fire extinguisher accessible to your plasma cutting welding environment...

Page 4: ...sive heat and failure 1 4 Specific Areas of Danger Caution or Warning Electrical Shock Plasma cutters can produce a shock that can cause injury or death Touching electrically live parts can cause fata...

Page 5: ...or liquid combustibles in them Plasma cutting creates sparks and heat that can ignite flammable and explosive materials Do not operate any plasma cutter in areas where flammable or explosive material...

Page 6: ...ication Proper Care Repair and Maintenance Always have power disconnected when working on internal components Do not Do not touch or handle PC board without being grounded with a wrist strap Put PC bo...

Page 7: ...ff 120V AC power for a cutting capacity on steel of up to 1 4 at a travel speed of 10 inches per minute It cuts all electrically conductive materials See chart below It cuts a narrow kerf that results...

Page 8: ...The work indicator will light when the torch trigger is pulled indicating cutting current is activated PROTECTION INDICATOR LIGHT When the unit is in thermal overload is over voltage or lacking voltag...

Page 9: ...upplied adapter between the plasma cutter s power cord and the power source receptacle Make sure the POWER switch is OFF when connecting your plasma cutter s power cord directly to a properly grounded...

Page 10: ...ntrol Connection See Figure 3 c Connect the Grounding Cable to the ground connection See Figure 3 d Connect the Ground Clamp to your workpiece e Connect your compressed air source to the gas connectio...

Page 11: ...nd that it complies with safe operation requirements as noted in the IMPORTANT SAFETY CONSIDERATIONS Section b Switch on the power switch of the cutter to observe if the operation is normal If it is n...

Page 12: ...filter on your air supply and remove excess moisture Too much moisture in the cutter or torch may lead to operational trouble Always unplug the power supply before checking for and removing moisture...

Page 13: ...to be replaced Install an air dryer to your compressed air supply to prevent corrosion of the torch head Arc Start Circuit Defective For Assistance Contact Metal Man Work Gear at 888 762 4045 Control...

Page 14: ...Page 14 of 17 MAIN CIRCUIT DIAGRAM...

Page 15: ...Page 15 of 17 DIAGRAM PARTS LIST...

Page 16: ...1 13 105400146 BASE PLATE 1 14 105400242 FIXED PLATE 1 15 105400151 FRONT PLASTIC BEZEL 1 16 105400240 TORCH CONNECTION 1 17 105400156 CONNECTOR COVER 1 18 105400153 TRIGGER CONTROL RECEPTICAL 1 19 1...

Page 17: ...Page 17 of 17 Distributed by CORNWELL QUALITY TOOLS 667 SEVILLE RD WADSWORTH OH 44281 www conwelltools com Made in China...

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