Arcon IRONHORSE 300S, Operating Instructions Manual

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11
3. OPERATION
WARNING!
P
LEASE READ
C
HAPTER
1
REGARDING
S
AFETY
3.1 Controls and Settings
3.1.1 Circuit Breaker (Power On/Off)
The Circuit Breaker is located on the control panel at the rear of the machine. Move the switch
lever up to the ON position to start the machine. This also activates the Thermostat- controlled
Cooling Fan for approximately 6 minutes indicating that correct power connections have been
applied.
It is imperative that you switch off the circuit breaker before disconnecting from the third
rail. When resuming, it is equally imperative that you verify that the circuit breaker is in
the “OFF
” position before reconnecting to the 3rd rail.
3.1.2 Thermostat-controlled Cooling Fan
The cooling fan starts automatically when welding current exceeds 100 Amps. If the current
drops below 100 A, the fan will stop after approximately 6 minutes. If the fan is operating when
the work is discontinued, the fan will continue to run and stop after approximately six minutes.
3.1.3 Weld Current Range Selector
Two different settings (10 - 180 Amps and 80 - 400 Amps) are available. Each setting defines a
specific range of output current for the welder.
3.1.4 Welding Power Control
This continuous control is used to adjust the welding current from minimum to maximum value,
depending on the setting of the Weld Current Range Selector.
3.1.5 Arc Force Control
This control is used to adjust the Arc Force on constant current applications. The control is fully
adjustable from 0 to 100%, with 0 being very soft and 100% being very hard. When adjusting the
Arc Force, the low settings will produce a soft arc and the high settings will produce a more
forceful or driving arc. Please note that the higher settings will produce higher levels of spatter.
The higher setting will create a more stable arc for electrodes that easily become
unstable, such as cellulose (5P). If you do not know the optimal setting for the electrode
you are using, start at the highest setting and lower it until the arc just begins to become
unstable.