Air Vent Inc IM10065 Digital Output Meters, Weld Mode Selector Switch, Arc Control, PIN Connector

b-4 OPERATION b-4

11. DIGITAL OUTPUT METERS:

The digital meters allow the output voltage (CV-WIRE mode) or current (CC-STICK, DOWNHILL PIPE and TIG modes) to be set prior to welding using the OUT- PUT control knob. During welding, the meters display the actual output voltage (VOLTS) and current (AMPS). A memory feature holds the display of both meters on the seven seconds after welding is stopped. This allows the operator to read the actual current and voltage just prior to when welding was ceased. While the display is being held the left-most decimal point in each display will be flashing. The accuracy of the meters is ± 3%.

12. WELD MODE SELECTOR SWITCH:

(Provides four selectable welding modes)

CV-WIRE

DOWNHILL PIPE

CC-STICK

TOUCH START TIG

13. ARC CONTROL:

The ARC CONTROL WIRE/STICK knob is active in the WIRE and STICK modes, and has different func- tions in these modes. This control is not active in the TIG mode.

CC-STICK mode: In this mode, the ARC CONTROL knob sets the short circuit current (arc-force) during stick welding. Increasing the number from -10(Soft) to +10(Crisp) increases the short circuit current and prevents sticking of the electrode to the plate while welding. This can also increase spatter. It is recom- mended that the ARC CONTROL be set to the mini- mum number without electrode sticking. Start with a setting at 0.

DOWNHILL PIPE mode: In this mode, the ARC CONTROL knob sets the short circuit current (arc- force) during stick welding to adjust for a soft or a more forceful digging arc (Crisp). Increasing the num- ber from -10(Soft) to +10(Crisp) increases the short circuit current which results in a more forceful digging arc. Typically a forceful digging arc is preferred for root and hot passes. A softer arc is preferred for fill and cap passes where weld puddle control and depo- sition (“stacking” of iron) are key to fast travel speeds. It is recommended that the ARC CONTROL be set initially at 0.

CV-WIRE mode: In this mode, turning the ARC CON- TROL knob from -10(soft) to +10(crisp) changes the arc from soft and washed-in to crisp and narrow. It acts as an inductance/pinch control. The proper set- ting depends on the procedure and operator prefer- ence. Start with a setting of 0.

14. WELDING TERMINALS SWITCH

In the WELD TERMINALS ON position, the output is electrically hot all the time. In the REMOTELY CONTROLLED position, the output is controlled by a wire feeder or amptrol device, and is electrically off until a remote switch is depressed.

15. WIRE FEEDER VOLTMETER SWITCH:

Matches the polarity of the wire feeder voltmeter to the polarity of the electrode.

16. 6 - PIN CONNECTOR

For attaching optional remote control equipment. Includes auto-sensing remote control circuit.

17. 14 - PIN CONNECTOR

For attaching wire feeder control cables. Includes contactor closure circuit, auto-sensing remote con- trol circuit, and 120VAC and 42VAC power.

NOTE: When a wire feeder with a built in welding voltage control is connected to the 14-pin connec- tor, do not connect anything to the 6-pin connec- tor.

18. WELD OUTPUT TERMINALS + AND -

These 1/2” - 13 studs with flange nuts provide welding connection points for the electrode and work cables. For positive polarity welding the elec- trode cable connects to the “+” terminal and the work cable connects to this “-” terminal. For nega- tive polarity welding the work cable connects to the “+” terminal and the electrode cable connects to this “-” terminal.

AUXILIARY POWER CONTROLS

(Items 19-23)

19. 120/240 VAC SINGLE PHASE RECEPTACLE

This is a 120/240VAC (14-50R) receptacle that provides 240VAC or can be split for 120VAC single phase auxiliary power. This receptacle has a 50 amp rating. Refer to the AUXILIARY POWER RECEPTACLES section in the installation chapter for further information about this receptacle. Also refer to the AUXILIARY POWER OPERATION section later in this chapter.

AIR VANTAGE® 500 CUMMINS