Vrd - Voltage Reduction Device - Matco Tools MP200DVILCD Owner's Manual

i. VRD – VOLTAGE REDUCTION DEVICE
i. This unit can be set up as a voltage reduction device (VRD) if needed. VRD
reduces the Open Circuit Voltage (OCV) that is available at the weld output
connectors, while not welding.
ii. Press the MULTI-FUNCTION ADJUSTMENT/SELECTION KNOB to exit the
Amperage Adjustment Mode.
iii. Turn the MULTI-FUNCTION ADJUSTMENT/SELECTION KNOB to VRD. Press
to confirm.
iv. Turn the MULTI-FUNCTION ADJUSTMENT/SELECTION KNOB to turn VRD On
or Off. Push in the MULTI-FUNCTION ADJUSTMENT/SELECTION KNOB to
confirm your selection.
v. The screen will automatically default back to your set-up screen.
5. DC LIFT START TIG WELDING SET-UP
a. Press the START BUTTON
b. Turn the MULTI-FUNCTION ADJUSTMENT/SELECTION KNOB until the LIFT TIG screen
is displayed.
c. Push in the MULTI-FUNCTION ADJUSTMENT/SELECTION KNOB to confirm your
selection.
d. Follow the display set-up
i. Connect the TIG torch to the Negative (-) Weld Output Connection
ii. Connect the Ground Cable to the Positive (+) Weld Output Connection
e. Push in the MULTI-FUNCTION ADJUSTMENT/SELECTION KNOB.
f. This machine is now set to weld.
g. AMPERAGE Adjustment: Turn the MULTI-FUNCTION ADJUSTMENT/SELECTION KNOB.
i. Counter Clockwise to decrease amperage
ii. Clockwise to increase amperage
1. Note that you will only be able to adjust the amperage to within the
available welding range. Keep in mind that this amperage range is
different when using 120V power and 230V power.
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