Longevity STICKWELD 315 - Manual (Page 16)

250/315 DC ARC Welders
Page 15 of 25
Main Unit Knob/Button/Function:
1. On/Off Breaker or Switch: Either breaker or switch located on the back or front of the
unit will control the unit to be turned on or off.
2 Power Indicator: Shows unit is powered on. Indicator is present in some models with a
green LED bulb.
3 Warning indicator: Illuminates when the duty cycle has been exceeded or the machine
has overheated due to improper ventilation. Discontinue use until lamp goes out. Allow
the fan to continue to run. Once lamp goes out, you may resume using the unit.
4 O.T. Indicator: Illuminates when the internal circuit boards are at too high of an
operating temperature.
5 + / – Connections: Polarity and ground selection lugs. Correct use of polarity is the key
to weld quality. Follow the electrode and wire manufacturers recommendations for
polarity. Ground connection will be inserted into the negative post for straight polarity.
6 Digital Current Meter: Indicates Current setting while operating machine.
7 Arc Force Adjustment Knob: This adjustment will allow you to adjust the ARC quality
of a weld. Using this function will allow you to adjust the sharpness of your ARC. Setting
experimentation may be required to find a perfect setting for an individual welder.
8 Welding Current Adjustment Knob: This adjustment will control the amperage output
while welding.
9 External Ground Lug: This may be used in some circumstances where extra grounding
is necessary for local electrical code compliance. This will allow you to ground the
machine separately with a separate wire connection. (Note: machine is grounded through
power cord.)