Lincoln Electric POWER WAVE 405M, Operator'S Manual

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MAINTENANCE

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POWER WAVE 405M

SAFETY PRECAUTIONS

CAPACITOR DISCHARGE PROCEDURE

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.

ROUTINE MAINTENANCE

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

PERIODIC MAINTENANCE

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.  

CALIbRATION SPECIFICATION

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.

ELECTRIC SHOCK can kill.

• Do not touch electrically live parts or

electrode with skin or wet clothing.

• Insulate  yourself  from  work  and

ground

• Always wear dry insulating gloves.

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EXPLODING PARTS can cause
injury.

• Failed parts can explode or cause other

parts to explode when power is applied.

•  Always  wear  a  face  shield  and  long

sleeves when servicing.

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See  additional  warning  information
throughout this Operator’s Manual 

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WARNING