Capacitor Discharge Procedure - Lincoln Electric FlexCut 200 Service Manual

LINCOLN ELECTRIC

CAPACITOR DISCHARGE PROCEDURE

Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized
repairs performed on this equipment may result in danger to the technician or machine operator and will
invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety
notes and precautions detailed throughout this manual. If for any reason you do not understand the test
procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department
for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
TEST DESCRIPTION
This procedure will ensure that the Capacitors on the Switch Board and capacitor (C1) have been
discharged.
MATERIALS NEEDED
Volt/Ohmmeter
Resistor (25-1000 ohms and 25 watts minimum)
Electrically Insulated Gloves
Electrically Insulated Pliers
Jumper Leads
Wiring Diagram
TEST PROCEDURE
1. Carefully remove input power from the FlexCut 200 machine.
2. Perform the Case Cover Removal Procedure.
3. Locate terminals 207 and 209 on the switch board. See Figure F.3. See Wiring Diagram.
4. Using a 25 watt or more resistor (25 to 1000 ohm) connected to two test leads, carefully discharge
the capacitors.
5. Using a volt/ohmmeter, ensure the capacitors are discharged by connecting the positive meter
probe to terminal 209 and the negative meter probe to terminal 207 on the switch board. The
voltage should be zero, if not repeat the discharge procedure. See Wiring Diagram.
6. Locate the positive and negative terminals of capacitor (C1). See Figures F.4 and F.5. See Wiring
Diagram.
7. Using a 25 watt or more resistor (25 to 1000 ohm) connected to two test leads, carefully discharge
the capacitor (C1).
8. Using a volt/ohmmeter, ensure that capacitor (C1) is discharged by connecting the positive meter
probe to the positive terminal and the negative meter probe to the negative terminal on capacitor
(C1). The voltage should be zero, if not repeat the discharge procedure. See Wiring Diagram.
FlexCut® 200 Service Manual
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