WIA Weldmatic 256, Руководство оператора

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14
Operators Manual
Quality
•
Reliability
•
Performance Quality
•
Reliability
•
Performance
Gun Position
For “down hand” fillet welding, the gun is
normally positioned as shown in Figure 9
below with the nozzle end pointing in the
direction of travel.
Fig 9 Gun Position
Fig 8 “Bad” Weld Fig 7 “Good” Weld
8 General Maintenance
Before removing the power source
or wirefeeder covers, ENSURE that
the equipment is disconnected from
the mains power supply. When the
equipment is energised LETHAL
VOLTAGES are present on the electrical
components enclosed.
Dust
Care should be taken to prevent excessive
build-up of dust and dirt within the welding
power source. It is recommended that at
regular intervals, according to the prevailing
conditions, the equipment covers be removed
and any accumulated dust be removed by the
use of dry, low pressure compressed air, or a
vacuum cleaner.
Wirefeed
In order to obtain the most satisfactory
welding results from the G.M.A.W. process,
the wirefeed must be smooth and constant.
Most causes of erratic wirefeed can be cured
by basic maintenance. Check that the:
1 Feed rolls are the correct size and type
for the wire in use. Check also that there
is correct alignment along the complete
wirefeed path and that the groove is not
worn;
2 Gun cable liner is clear of dust and swarf
build-up. When replacement becomes
necessary, fit only the correct liner (see
page 28). The build-up of dust can be
minimised by regular purging of the liner
with dry compressed air. This may be
conveniently done each time the wire
spool is replaced;
3 Welding tip is free of obstructions such as
spatter build-up. Ream out the tip bore
with a suitable size oxy-tip cleaner. Replace
the welding tip as it becomes worn;