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HTP MicroCut 875S Owner's Manual

Air plasma cutting system
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Mi c r o C u t 8 7 5 S

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Summary of Contents for HTP MicroCut 875S

  • Page 1 Mi c r o C u t 8 7 5 S...

  • Page 2: Table Of Contents

    Electrical Connection ......7 MicroCut 875S Controls ......8 Ground Cable Connection .

  • Page 3: Warranty

    This warranty is null and void unless warranty card resulting from a defect within the following periods is sent to HTP America, Inc. within 15 days from from the date of delivery of MicroCut 875S to the date of purchase. original user:...

  • Page 4: Safety Precautions

    on. Plasma arc cutting requires higher voltages than welding to Safety Precautions start and maintain the arc (100 -300 volts dc are common), but also uses torches designed with safety interlock systems which Plasma Arc Cutting Hazards turn off the machine when the shield cup is loosened or if tip touches electrode inside the nozzle.
  • Page 5 Turn Off unit, disconnect input power, check voltage on input If inside, ventilate the area and/or use exhaust at the arc to capacitors, and be sure it is near zero (0) volts before remove cutting fumes and gases. touching any parts. Check capacitors according to If ventilation is poor, use an approved air-supplied respirator.
  • Page 6 Never allow electrical contact between a plasma arc torch Safety and Health Standards, OSHA 29 CFR 1910, from and cylinder. Superintendent of Documents, U.S. government Printing Office, Washington, D.C. 20402. Never cut on a pressurized cylinder. Explosion will result. Recommended Practices for Plasma Arc Cutting, American Keep protective cap in place over valve except when cylinder Welding Society Standard AWS C5.2 from American Welding is in use or connected for use.

  • Page 7: Inspection

    Inspection If you do not have a drier on your compressor, we strongly recommend the HTP Max Dry (Part # 25310). This is a 3 stage After removing your plasma cutter from its shipping carton, filter which inspect the plasma cutter for any concealed damage not seen Fig.2 #25300...

  • Page 8: Microcut 875S Controls

    FRONT PANEL COMNTROLS Input Power Light Air Pressure Light Thermo Switch Light Safety Alarm Cutting Power Adjustment Reset Switch Gas Purge Switch Main Power Switch Expanded Metal Switch Plasma Torch Connection Ground Cable Connection Fig. 3 Micro Cut 875S Controls INPUT POWER LIGHT - when the machine will continue to run, cooling the machine.

  • Page 9: Ground Cable Connection

    You can do drag cutting (resting the plasma torch on automatic cutting. In the manual mode, when the the work) when the amperage is set to 40 amps or plasma arc loses contact with the material being cut, less with the deflector and the 40 amp tip installed in the arc will extinguish.

  • Page 10: Operation

    Operation work to start, there will be no where for the slag to flow, and it will come straight up and damage the gas diffuser, cutting tip, and electrode. 1. Be sure your Micro Cut 875S is connected to a clean, dry source of compressed air with a line pressure of at least 80 but not more than 140 psi.

  • Page 11: Cutting Tips

    1. When making long, straight cuts, it may be easier to use a metal straight edge as a guide. Simply clamp it to the work piece to be cut. HTP America, Inc. also manufactures a complete Circle-Cutting and Straight-Line Traversing Assembly for frequent cutting of circles and lines.

  • Page 12: Microcut 875S Plasma Torch Parts Breakdown

    MicroCut 875S Torch Parts Breakdown Ref # Description Part # Ref # Description Part # Shield Cap - Drag Cutting 87005D Cutting Tip - 60 Amp 870030-60 Shield Cap - Stand Off 87005SO Cutting Tip - 40 Amp 870030-40 Shield Cap - Gouging...

  • Page 13: Microcut 875S Parts Breakdown

    MicroCut 875S Parts Breakdown part 1 Part # Illus # Description 66109 Handle 62019 Top Cover 66231 Knob - On-Off Switch 64188 Manual/Auto Switch 660554 ID Label 660555 Torch - Ground Label 20320 Female Ground Receptacle 22312 Male Ground Plug...
  • Page 14 MicroCut 875S Parts Breakdown part 2 Part # Illus # Description 610889 PCB - Primary Power 64393 Gas Solenoid Valve 64032 Pressure Safety Switch 650193 Control Transformer 64180 Fuse Holder 203335-2 15 Fuse...
  • Page 15 MicroCut 875S Parts Breakdown part 3 Part # Illus # Description 611124 PCB - Front Panel 61307 Choke Coil 66160 Gas Hose 61733 PCB - Input Power 62018 Cabinet - Base 64215 Thermoswitch - 70°C 63053 Pressure Guage 63055 Regulator...
  • Page 16 MicroCut 875S Parts Breakdown part 4 Part # Illus # Description 64182 Cooling Fan 610784 SPCB - Secondary Powe 65775 Thermoswitch - 80°C 610833 PCB - Pilot Switchover 62572 Front Panel 64154 On-Off Switch...

  • Page 17: Wiring Diagram

    MicroCut 875S Wiring Diagram...

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