4-3. Calibrating Optional IPM Meter
1
A
6
5 
B
0
15
2
3
4
Nonconductive
C
Meter is factory calibrated, but may need recalibration after motor brushes are fully seated. To recali- brate, proceed as follows:
1CV/CC Switch Set switch to CV.
2Meter Board PC4
3Resistor R53 Adjustment Screw (High Range)
4Resistor R54 Adjustment Screw (Low Range)
Calibrate Low range wire speed first.
5Wire Speed Range Switch
6Wire Speed Control
ASet range switch to Low, and control to about 50%. Turn wire feeder and weld- ing power source On.
BPress trigger and feed wire for 15 seconds. Measure wire length, and multiply x 4 to get actual ipm. For ex- ample: If 49 inches feeds in 15 sec, 49 x 4 = 196 actual ipm.
CPress trigger again: Meter reading should match ac- tual ipm value, 196 in ex- ample. If not, press trigger and carefully adjust R54 until meter reads 196.
After Low range is calibrated, set range switch to High. Leave control at same setting (about 380 ipm). Repeat procedure to calibrate High range wire speed: About 95 inches should feed in 15 sec, 95 x 4 = 380 ipm. If needed, adjust R53 so meter reading matches actual ipm.
Turn off power. Close and latch door.
Ref.