Weldmatic 215 - General Maintenance

Weldmatic 215 Operators Manual
12 Model No. CP111-0, Iss A 02/05
Quality, Reliability, Performance
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.
8 General Maintenance
7 Welding wire is straight and free of buckles
or ‘waviness’. To check, remove 2 or 3
metres of wire from the spool. Clamp one
end in a vice or similar, then holding the
other end pull the wire out straight. Look
down the length of the wire, any buckles
will be obvious. Buckled wire is extremely
difficult to feed reliably and should be
replaced;
8 Welding wire is free of surface rust. Replace
if rust is evident.
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 the drive
groove is aligned with the wire (refer page
9), 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
19). 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;
4 Feed roll pressure is not excessive. The
pressure should be just sufficient to feed the
wire evenly. Excessive pressure will deform
the electrode wire and make feeding more
difficult;
5 Consumable wire spool holder rotates
smoothly and that the braking action is
not excessive. The spool should only have
sufficient braking to prevent over run
when the motor stops. This also may be
conveniently checked each time the wire is
replenished;