MK Products Cobramatic 120 VAC V6 - Manual (Page 10)

Cobramatic ® Owner’s Manual - page 2
Coolant Supply and Return for Liquid Cooled Guns
Using a recirculator with properly mixed coolant, as previously described,
connect the coolant RETURN hose to the left middle fitting on the power
block. Connect the coolant SUPPLY hose to the left top-most fitting on the
power block (See Cabinet and Gun Connections page 16).
The coolant hoses must have a male 5/8-18 left-hand thread to connect to
the power block fittings. Use an 11/16” wrench to tighten.
Welding Power
The electrode cable coming from the welding power supply should be affixed
with a 1/2” copper ring lug. Use a 9/16” wrench to tighten.
Cable from power supply
MUST connect to bottom bolt of power block.
Reference Input Connections figure in the Appendix.
Wire Threading Procedure
Wire Spool Installation
Release latches, and open right side door of cabinet (Reference Cobramatic ®
Assembly drawing).
Remove spool retainer nut from spindle hub (Reference Cobramatic
® Spindle
Brake Assembly drawing).
Raise wire retainer bar to latched position (Reference Cobramatic
® Assembly
drawing).
Install wire spool onto spindle so that wire feeds from bottom of spool
towards slave motor. Make sure that the hole in the wire spool aligns with
pin on spindle. The white dot on the end of the spindle will aid in this align-
ment.
Replace the spool retainer nut.
Lower the wire retainer bar onto the spool.
Wire Spool Drag Setting
NOTE:
Standard factory setting of the Spindle Tension Knob is set for All
Other Wires.
There are two visible position settings for this Knob, IN - All Other Wires (Fig.
1) and, OUT - .030/.035 Al Only (Fig. 2). The Spindle Tension Knob must be
set to match the Wire Size Selector Switch on the Cobramatic ® front panel.
To change this setting, it is easily done without the spool of wire on the spin-
dle. Remove the wire spool retainer nut and re-install it reversed back onto
the Spindle Tension Knob (Fig. 3). In the “Tool Mode”, the square shaped
end of the retainer fits onto the Knob. Grab the retainer nut and turn in the
COUNTER-CLOCKWISE direction until it stops. The Knob is now set to the
OUT position (.030/.035 AL Only).
To reset the Knob back to the factory setting of All Other Wires, use the
retainer nut as described above, and turn in the CLOCKWISE direction until
it stops. The Spindle Knob is now set to the IN position. Turning the retainer
nut and Spindle Knob in this direction may require more effort, since turning
CLOCKWISE is working against a spring.
Load wire spool onto spindle according to the previous instructions.
Replace the spool retainer nut.
Lower the wire retainer bar onto the spool.