Section TOC
Master TOC
OPERATION | ||
| ||
|
|
|
FIGURE B.1
Return to
Return to
5
1 | 1 |
6
5 |
6 |
2
2
Section TOC
Master TOC
3
7
3
Return to
Return to
4 | 4 |
Return to Section TOC
Return to Section TOC
Return to Master TOC
Return to Master TOC
CASE FRONT CONTROLS (See Figure B.1)
ITEM | DESCRIPTION |
|
|
1. | Analog Voltmeter |
|
|
2. | Wire Feed Speed Control |
|
|
3. | |
|
|
4. | Work Sense Lead Connector |
|
|
5 | Thermal LED (Motor Overload) |
|
|
6. | Polarity LED |
|
|
7. | Wire Feed Speed Range Switch |
|
|
1. ANALOG VOLTMETER
The analog voltmeter shows the voltage between electrode and work. The voltmeter shows open cir- cuit voltage when the wire feeder is not welding. As a result, it is not unusual to see the needle “pegged” when not welding. The voltmeter is polarity insensi- tive and the range is 0 - 40VDC.
2.WIRE FEED SPEED KNOB
The large, calibrated wire feed speed knob makes for easy and accurate adjustment of the wire feed speed. The knob rotates 3/4 turn. Turn the knob clockwise to increase the wire feed speed, and counter clockwise to reduce the wire feed speed.
Models with analog voltmeters have a calibrated scale printed around the wire feed speed knob using "in/min" units. A separate decal with "m/min" units is included with these models wire feeder. Units with a range switch have two calibrated scales.
Wire Feed Speed, CV Operation
When Across the Arc models are operated with CV power sources, the wire feed speed will remain a con- stant value, independent of arc voltage changes, as long as the arc voltage does not drop below the mini- mum values per the following table.
TABLE B.1 - CV OPERATION | ||
|
|
|
Minimum | Maximum WFS | Maximum WFS |
Arc Voltage | (Standard) | (Extra Torque) |
15 V | 280”/min. | 210”/min. |
|
|
|
17V | 340”/min. | 235”/min. |
|
|
|
21V | 440”/min. | 400”/min. |
|
|
|
24V | 520”/min. | 400”/min. |
|
|
|
27V | 600”/min | 400”/min. |
|
|
|
