Maintenance; Inspection, Cleaning And Replacement; Calibration And Validation Of Measured Values - ESAB Robust Feed PRO Instruction Manual

7 MAINTENANCE

7 MAINTENANCE
NOTE!
Regular maintenance is important for safe and reliable operation.
CAUTION!
All warranty undertakings from the supplier cease to apply if the customer attempts
any work to rectify any faults in the product during the warranty period.
7.1

Inspection, cleaning and replacement

Wire feed mechanism
Regularly check that the wire feed unit is not clogged with dirt.
• Cleaning and replacement of worn parts in the mechanism of the wire feed should take
place at regular intervals in order to achieve trouble-free wire feeding. Note that if
pretensioning is set too hard, this can result in abnormal wear on the pressure roller,
feed roller, and wire guide.
• Cleaning of the liners and other mechanical parts of the wire feed mechanism should
be carried out at regular intervals or if the wire feed seems slow. Use compressed air
for this task.
• Changing nozzles
• Checking the driving wheel
• Changing the cog-wheel package
Bobbin holder
• Inspect at regular intervals that the brake hub sleeve and the brake hub nut are not
worn out and that they lock properly. Replace if necessary.
Welding torch
• The wear parts of the welding torch should be cleaned and replaced at regular intervals
in order to achieve trouble-free wire feed. Blow the wire guide clean regularly and clean
the contact tip.
7.2

Calibration and validation of measured values

Robust Feed PRO displays the measured values, arc voltage and welding current as
rectified arithmetic mean values (measure value formation).
• The wire feed speed is set on the Robust Feed PRO control panel. The set speed is
shown on the display, in units of m/min or in./min.
• The Warrior™ welding power source used in conjunction with Robust Feed PRO (see
the "INTRODUCTION" chapter in the instruction manual), measures and calculates the
mean value of arc voltage and welding current. The measured values are transferred
from the Warrior™ welding power source to Robust Feed PRO via a digital bus.
It is recommended that the accuracy of the set and measured values is periodically
calibrated and validated to verify whether the values are within the accepted deviation.
Calibration and validation should be performed by a trained service technician with sufficient
training in welding and measurement technology. Guiding principles for calibration/validation
and the accepted deviation for each displayed parameter can be found in the service
manual.
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