MK Products Weld Control - Manual (Page 15)

Weld Control Selector Guide - Page 8
airco
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The WC-1 Weld Control or the Cobramatic Cabinet can be connected to the Dip-Cor 300 as follows:
1. Connect the black and white contactor leads extending from the WC-1 or Cobramatic to the
spade connectors located on the center panel below the wire feed motor. Place the contactor in
the CLOSING CONTACTS position (see Appendix for contactor information).
2. Plug the 115VAC plug extending from the WC-1 or Cobramatic into a standard wall outlet.
3. Tape off WC-1 red and green leads and turn off Posa Start switch as Posa Start is not used.
note: The feeder inside these units will also be turned on, so disengage the spring tension
on the drive roll.
Airco CV power supplies use a two-prong twist lock for the contactor. Some units have a standard wall
outlet 115VAC plug.
1. To hook-up the WC-1 or Cobramatic to these units connect the black and white
contactor leads extending from the WC-1 or Cobramatic to the two-prong twist
lock plug ( black to hot & white to neutral). Change the contactor to the 115VAC
position (see Appendix for contactor information).
2. Plug the 115VAC plug extending from the WC-1 or Cobramatic into a standard
wall outlet.
3. Tape off WC-1 red and green leads and turn off Posa Start switch as Posa Start
is not used.
4. If the power supply has a Remote/Standard contactor switch set it to "REMOTE".
note: On Pulse Arc series machines:
1. Place remote pendant Wire Speed switch in "MANUAL".
2. Use Voltage Trim for voltage control.
3. Use spoolgun wire speed knob to adjust wire speed.
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two Prong Plug
Miller 039-635
Hubbel 7101
The WC-1 Weld Control or the Cobramatic Cabinet can be connected to Airco CC power supplies as
follows:
Airco has used a variety of contactor plugs over the years. (On some older units, a 6-Pin Cinch-Jones
plug was popular. The WC-1 or Cobramatic contactor leads would go to pins 1 and 3.)
All TIG machines use CLOSING CONTACTS!
1. Connect the black and white contactor leads extending from the WC-1 OR Cobramatic to the
remote foot control receptacle. Using the owner's manual or the foot control find out which leads
go to the switch inside the foot control; this is where the contactor leads will be connected on the
front panel receptacle. Place the WC-1 or Cobramatic in the CLOSING CONTACTS position (see
Appendix for contactor information).
2. Plug the 115VAC plug extending from the WC-1 or Cobramatic into a standard wall outlet.
3. *Connect the red and green leads from the WC-1 to the power supply positive (+) and negative
(-) terminals of the power supply; red to positive (+) and green to negative (-).
4. If the power supply has a Remote/Standard contactor switch set it to "REMOTE".
5. Set the amperage control to "panel" and the process switch to "TIG".
6. Place polarity switch to DC Reverse Polarity (electrode positive).
*See Appendix for Cobramatic Posa Start information.
CaUtiOn: MaKE SURE tHat tHE HiGH fREQUEnCy iS
tURnEd Off OR daMaGE tO tHE WC-1 OR
COBRaMatiC WiLL OCCUR.
Required Plug
Check the owner's manual for the
correct plug part number. The plug
will be found on the end of the foot
control cable.
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