Owner manual

D-1
MAINTENANCE
D-1
POWER WAVE
®
455M/STT
®
SAFETY PRECAUTIONS
ELECTRIC SHOCK can kill.
• Only Qualified personnel should
perform this maintenance.
• Turn the input power OFF at the
disconnect switch or fuse box
before working on this equip-
ment.
• Do not touch electrically hot parts.
------------------------------------------------------------------------
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.
PERIODIC MAINTENANCE
Calibration of the POWER WAVE
®
455M/STT
®
is criti-
cal to its operation. Generally speaking the calibration
will not need adjustment. However, neglected or
improperly calibrated machines may not yield satisfac-
tory weld performance. To ensure optimal perfor-
mance, the calibration of output Voltage and Current
should be checked yearly.
CALIBRATION SPECIFICATION
Output Voltage and Current are calibrated at the facto-
ry. Generally speaking the machine calibration will not
need adjustment. However, if the weld performance
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
resistive load bank, and certified actual meters for volt-
age and current. 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.
WARNING