Lincoln Electric IM10144 POWER WAVE S700 - Manual (Page 38)

D-1 MAINTENANCE D-1
POWER WAVE ® S700
SAFETY PRECAUTIONS
WARNING
ELECTRIC SHOCK can kill.
• Do not operate with covers
removed.
• Turn off power source before
installing or servicing.
• Do not touch electrically hot
parts.
• Turn the input power to the welding power
source off at the fuse box before working in the
terminal strip.
• Only qualified personnel should install, use or
service this equipment.
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VISUAL INSPECTION
Clean the interior of the machine with a low pressure
air stream. Make a thorough inspection of all compo-
nents. Look for signs of overheating, broken leads or
other obvious problems. Many problems can be
uncovered with a good visual inspection.
ROUTINE MAINTENANCE
Approximately every 6 months the machine should be
cleaned with a low pressure air stream. Keeping the
machine clean will result in cooler operation and high-
er reliability. Be sure to clean these areas:
• All printed circuit boards
• Power switch
• Main transformer
• Input rectifier
• Heatsink fins
• Auxiliary Transformers
• Reconnect Switch Area
• Fan (Blow air through the rear louvers)
Examine the sheet metal case for dents or breakage.
Repair the case as required. Keep the case in good
condition to insure that high voltage parts are protect-
ed and correct spacings are maintained. All external
sheet metal screws must be in place to insure case
strength and electrical ground continuity.
PERIODIC MAINTENANCE
Calibration of the Power Wave ® S700 is critical to its
operation. Generally speaking, the calibration will not
need adjustment. However, neglected or improperly
calibrated machines may not yield satisfactory weld
performance. To ensure optimal performance, the cal-
ibration of output voltage and current should be
checked yearly, using calibrated meters in test modes.
Thermal Protection
Thermostats protect the machine from excessive
operating temperatures. Excessive temperatures may
be caused by a lack of cooling air or operating the
machine beyond the duty cycle and output rating. If
excessive operating temperature should occur, the
thermostat will prevent disable output. The thermal
LED will remain illuminated during this time.
Thermostats are self-resetting once the machine cools
sufficiently. If the thermostat shutdown was caused by
excessive output or duty cycle and the fan is operating
normally, the power switch may be left on and the
reset should occur within a 15 minute period.
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, use the calibration section of the Power
Wave
® Manager Diagnostics Utility to make the
appropriate adjustments.
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. The Diagnostics Utility includes detailed
instructions, and is available on (http://www.power-
wavesoftware.com/).