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TROUBLESHOOTING 

SYMPTOM 

POSSIBLE CAUSE 

CORRECTIVE ACTION 

 

 

Unit does not power up 

Unit is not plugged in 

Plug unit in 

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 60psi 

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 Matco customer 

service at 855-920-2399 

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, call 855-920-2399 

Summary of Contents for MPPC70DV

Page 1: ...A CUTTER OWNER S MANUAL 11 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 MPPC70DV ...

Page 2: ...cover are considered consumable items and are not covered under warranty 1 Year Accessories Warranty Parts and Labor on MIG gun parts except those listed under normal wear items cables regulator and plasma torch except those listed under normal wear items are covered for 1 year Any shipping related to warranty repair is the responsibility of the customer 2 Year Welder Warranty The 2 year warranty ...

Page 3: ...fied technician in accordance with local state and national codes Always be aware of your work environment Be sure to keep other people especially children away from you while you are cutting Keep harmful arc rays shielded from the view of others Mount the plasma cutter on a secure bench or cart that will keep the plasma cutter secure and prevent it from tipping over or falling 1 2 Your Plasma Cut...

Page 4: ... air and can result in injury or death Do not breathe in fumes emitted by the plasma cutting process Make sure your breathing air is clean and safe Work only in a well ventilated area or use a ventilation device to remove plasma cutting fumes from the environment where you will be working Do not plasma cut on coated materials galvanized cadmium plated or containing zinc mercury or barium They will...

Page 5: ... or shield a welder s hat and ear plugs to keep sparks out of ears and hair Electromagnetic Field Electromagnetic fields can interfere with various electrical and electronic devices such as pacemakers Consult your doctor before using any plasma cutting device Keep people with pacemakers away from your plasma cutting area while cutting Do not wrap cable around your body while plasma cutting Wrap pl...

Page 6: ...Output Range 120V 15A 23A 230V 15A 45A Duty Cycle 120V 35 23A 230V 40 45A Compressed Air Required 4 5 CFM 60psi DO NOT SUPPLY MORE THAN 100psi Dimensions 18 58 x 7 32 x 13 46 Weight 22 93 lbs DESCRIPTION The Matco Tools MPPC70 is a Dual Voltage DC Inverter Plasma Cutter It uses new state of the art technology The output can be adjusted from 15 to 45 Amps This unit is designed to cut up to 11 16 st...

Page 7: ...timal setting for a more exact cut AIR PRESSURE ADJUSTOR It is used to adjust the air pressure The air pressure can be read from the air pressure display on the back panel Normally when operating on 230V power the pressure should be adjusted between 50 80psi When operating on 120V power the pressure should be adjusted between 45 65 psi POWER INDICATOR LIGHT This light will turn on when the input p...

Page 8: ...al air water separator POWER SWITCH The Power Switch allows input power to the machine components After the machine is connected to the input power supply turn on this switch The power indicator on the front panel will turn on POWER CORD AND PLUG Plug this unit into a 230V 50A circuit breaker power supply when operating on 230V If running on 120V power using the supplied 120V power cord adapter pl...

Page 9: ...onnection 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 air connection on this unit s back panel Figure 3 OPERATION High voltage danger from power source Consult a qualified electrician for proper installation of receptacle at the power source This plasma cutter must be groun...

Page 10: ...be sure it is consistent e Pull the torch trigger The cutting operation begins after the cutting plasma pilot arc is made 2 CUTTING OPERATION 2 1 Metal Sheet Cutting a Put the torch s nozzle at the start of the work piece Turn on the torch switch to ignite the plasma pilot After the work piece is cut through move the torch along the cutting direction uniformly The cutting speed is determined by wa...

Page 11: ...lasses and gloves while operating c Work only in well ventilated areas If necessary use exhaust ventilation fans to keep fumes or emissions away from the breathing zone d Do not touch the work piece while cutting e Do not cut pipes containers or other materials that contain or have ever contained flammable or explosive materials f Do not work underwater or in wet moist environments g Do not bend t...

Page 12: ...he 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 Matco customer service at 855 920 2399 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 pa...

Page 13: ...Page 13 of 16 2004058 12 MAIN CIRCUIT DIAGRAM ...

Page 14: ...Page 14 of 16 2004058 12 PARTS DIAGRAM ...

Page 15: ...PLATE 1 16 165400017 FRONT REAR BEZEL 1 17 105400071 AMPERAGE ADJUSTMENT POTENTIOMETER 1 18 165400024 FACE PLATE SUPPORT 1 19 165400025 FRONT PANEL SUPPORT 1 20 105400154 GROUND CONNECTORY COVER 1 21 165400026 TORCH CONNECTOR 1 22 165400027 FACE PLATE PCB 1 23 165400028 COPPER TERMINAL 1 24 105400058 GAS SOLENOID VALVE 1 25 165400029 PRESSURE SWITCH 1 26 165400030 AC REACTOR 1 27 165400031 VALVE C...

Page 16: ...Page 16 of 16 2004058 12 Distributed by Matco Tool 4403 Allen Road Stow OH 44224 ww w m a t c o t o o l s c o m Made in China to Matco specifications ...

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