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SECTION 4 — OPERATION
4.1 Operational Controls and Connections
4.2 Description of controls
1 On-Off switch
Upon switching on, the overload indicator will
light, after 15 seconds the overload indicator
will extinguish and the machine is ready for
use.
2 Power on indicator
Indicates that the machine is connected to
the mains supply and turned on
3 Current control
Sets the output current of the R1500
4 Overload indicator
Indicates that the thermal cut-out has oper-
ated (see the fault finding and maintenance
section for possible reasons)
5 Arc-force control
Operates in MMA mode only and controls the
welding dynamics of the machine to facili-
tate welding with different types of welding
electrodes Turning clockwise will increase
penetration at the expense of increased
welding spatter, turning anti-clockwise will
reduce penetration but the arc will be
smoother and less fierce.
6 Negative weld out connector.
Main welding power output connector, nega-
tive polarity.
7 Positive weld out connector
Main welding power output connector, posi-
tive polarity.
4.3 Operation
MMA Welding
For straight polarity welding, connect the elec-
•
trode holder to the positive weld terminal and
the earth return lead to the negative weld ter-
minal. For reverse polarity welding, reverse
these connections.
Turn the mode switch to 'MMA', the machine is
•
now in MMA mode.
Turn the mains switch to the on position, the
•
power-on and overload indicators will light. Af-
ter approximately 15 seconds the overload indi-
cator will extinguish and the machine is ready
to weld.
Turn the current control to the recommended
•
setting for the size and type of welding elec-
trode to be used.
When welding, adjust the Arc-force control to
•
achieve the arc condition you require.
The R1500 is suitable for welding all types of
•
electrodes within the current rating of the ma-
chine, normally up to 3.2 or 4mm depending on
the type of rod.
R1500
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