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1. Obtain a power resistor (25 ohms, 25 watts).
2. Hold resistor body with electrically insulated glove.
DO NOT TOUCH TERMINALS.
Connect the resis-
tor terminals across the two studs in the position
shown. Hold in each position for 1 second. Repeat
for all four capacitors.
3. Use a DC voltmeter to check that voltage is not
present across the terminals on all four capacitors.
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Routine maintenance consists of periodically blowing
out the machine, using a low pressure airstream, to
remove accumulated dust and dirt from the intake and
outlet louvers, and the cooling channels in the
machine.
CAPACITOR
TERMINALS
RESISTOR
CAPACITOR
TERMINALS
RESISTOR
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Calibration of the POWER WAVE 405M is critical to
its operation. Generally speaking the calibration will
not need adjustment. However, neglected or improp-
erly calibrated machines may not yield satisfactory
weld performance. To ensure optimal performance,
the calibration of output Voltage and Current should
be checked yearly.
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Output Voltage and Current are calibrated at the fac-
tory. Generally speaking the machine calibration will
not need adjustment. However, if the weld perfor-
mance changes, or the yearly calibration check
reveals a problem, contact the Lincoln Electric
Company for the calibration software utility.
The calibration procedure itself requires the use of a
grid, and certified actual meters for voltage and cur-
rent. The accuracy of the calibration will be directly
affected by the accuracy of the measuring equipment
you use. Detailed instructions are available with the
utility.
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