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OPERATION | ||
| ||
| • When the electrode touches the work or power is | |
| drawn for lights or tools (approximately 100 Watts | clock wise from |
| minimum), the engine accelerates and operates at | from soft and |
| full speed. | inductance/pinch control. The proper setting depends on the |
| • When welding ceases or the AC power load is | procedure and operator preference. Start with a setting of 0. |
| turned off, a fixed time delay of approximately 12 | 12. |
| seconds starts. If the welding or AC power load is | |
| not restarted before the end of the time delay, the | accessories, such as a wire feeder, spool gun module or |
| idler reduces the engine speed to low idle speed. | TIG module. It provides connections to both 120VAC and |
| • The engine will automatically return to high idle | 42VAC power, and to the weld circuit work voltage sensing |
| speed when there is welding load or AC power load | lead. It also provides a connection to the same control cir- |
| reapplied. | cuits described in the |
WELDING CONTROLS | remote control device, such as the K857, or a TIG Amptrol, | |
9. OUTPUT CONTROL: The output control dial is used | 13. | |
such as the K870 or K812. | ||
| to present the output voltage or current as displayed on | Both the 6 and |
| the digital meters for each of the four welding modes. It | remote control |
| can also be used to vary the output while welding. This | tial output control functions from the front panel output con- |
| control is disabled by an | trol dial to the remote output control device. |
| machine is in | When in TOUCH START TIG mode, a remote output con- |
| and an accessory device with output control capability is | trol device will vary the output from MIN up to the value set |
| plugged into either amphenol. | with the front panel output control dial. In all other modes, |
When in | the front panel output control is completely disabled, and | |
device with output control, such as an Amptrol, is plugged | full MIN to MAX control is transferred to the remote output | |
in to either Amphenol, the OUTPUT control dial is used to | control device. | |
set the maximum current range of the accessory output | Both Amphenols also connect to an electronic output con- | |
control device. | tactor circuit. When the “Weld Terminals” switch is in the | |
10. WELD MODE SELECTOR SWITCH: This switch | “remotely controlled” position, the weld terminals are | |
switched on an doff by the device connected to either | ||
| provides four selectable welding modes: | amphenol. |
| - |
|
| - DOWNHILL PIPE | NOTE: Both the 6 pin and 14 pin Amphenols share the same |
| - | |
| - TOUCH STARTING | output control |
| this reason, there can only be one device plugged into | |
11. ARC CONTROL- The ARC CONTROL dial is active | the Ranger 305D at any time. | |
| in the | 14. WELD TERMINALS CONTROL SWITCH- In the |
| modes, and has different functions in these modes. This | |
| control is not active in the TOUCH START TIG mode. | WELD TERMINALS ON position, the output is electrically |
| hot all the time. In the REMOTELY CONTROLLED posi- | |
| sets the short circuit current | tion, the output is controlled by a wire feeder or amptrol |
| ing to adjust for a soft or crisp arc. Increasing the dial from | device, and is electrically off until a remote switch is |
| closed. | |
| and prevents sticking of the electrode to the plate while | 15. WIRE FEEDER VOLTMETER SWITCH: |
| welding. This can also increase spatter. It is recommend- | |
| ed that the ARC CONTROL be set to the minimum num- | Matches the polarity of the wire feeder voltmeter to |
| ber without electrode sticking. Start with a setting at 0. | the polarity of the electrode. |
| DOWNHILL PIPE mode: In this mode, the ARC CON- | 16. DIGITAL OUTPUT METERS: |
| TROL dial sets the short circuit current | The digital meters allow the output voltage (“CV- |
| stick welding to adjust for a soft or a more forceful digging | WIRE” mode) or current |
| arc (crisp). Increasing the number from | PIPE” and “TOUCH START TIG” modes) to be preset |
| (crisp) increases the short circuit current which results in a | prior to welding using the output control dial. When |
| more forceful digging arc. Typically a forceful digging arc | |
| is preferred for root and hot passes. A softer arc is pre- | while |
| ferred for fill and cap passes where weld puddle control | While welding, the machine display both the actual |
| and deposition ("stacking" of iron) are key to fast travel | voltage (VOLTS) and current (AMPS). |
| speeds. It is recommended that the ARC CONTROL be |
|
| set initially at 0. |
|
RANGER 305D