Miller Electric Intellifire 250 manual Measuring Tuning Capacitor Voltage

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5-5. Measuring Tuning Capacitor Voltage

Y Significant AC voltage can remain on capacitors after unit is Off. Always check ALL capacitors as shown to be sure they have discharged before working on unit.

4

1

2

3

Top View

Tools Needed:

3/8 in

Turn Off power source and disconnect input power.

Remove wrapper.

1Tuning Capacitor C1

2Tuning Capacitor C2

3Tuning Capacitor C3

4Voltmeter

Check tuning capacitors.

Measure the ac voltage across the terminals on capacitors every 30 seconds until voltage is near 0 (zero) volts.

Proceed with job inside unit. Reinstall wrapper when finished.

Ref. ST-801 826-A

OM-184 227 Page 12

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Contents Induction Heating Power Source Visit our website at2006−05 Induction HeatingFrom Miller to You Table of Contents Page − Safety Precautions − Read Before Using Symbol UsageMarks a special safety message Induction Heating HazardsPrincipal Safety Standards Use only genuine Miller/Hobart replacement partsCalifornia Proposition 65 Warnings Flying Metal or Adhesive can injure eyesEMF Information About Pacemakers− Mesures DE Securite Pour LE Chauffage PAR Induction AvertissementDES Organes Mobiles peuvent provoquer des blessures Porteurs de stimulateur cardiaque, restez à distanceEn ce qui concerne les stimulateurs cardiaques Specifications − InstallationConnecting Head/Coil to Power Source Remote 14 Socket Information Remote 14 Receptacle RC14 Information and ConnectionsSocket Information Disconnect Device Input Power Connections Welding Power Source Input Power Connections = GND/PE Earth Ground Tools Needed 5/16 Electrical Service Guide Hz Three Phase− Operation Controls− Maintenance & Troubleshooting Routine MaintenanceSafety Interlock Switch OverheatingMeasuring Tuning Capacitor Voltage Ground Fault Protection Power Source Receptacle PlugMeasuring Input Capacitor Voltage Diagnostic LED’s Tuning Chart TroubleshootingTrouble Remedy OM-184 227 − Electrical Diagram Circuit Diagram204 963-A − Parts List Main AssemblyFM2 Center Baffle Assembly -1 Item 180 Page Page Page Your distributor also gives ServiceSupport To locate a Distributor or Service Agency visit For assistance in filing or settling claims, contactYour distributor and/or equipment manufacturer’s Transportation Department