MK Products Cobra MX LE Com ACWC - Manual (Page 8)

Cobra ® MX Lincoln Compatible™ Owner's Manual - Page 1
Section A Installation
Technical Specifications
Wire Capacity
.030" - .045" (0.8mm - 1.2mm) solid hard wire, and cored wire
.030" - 1/16" (0.8mm - 1.6mm) aluminum
Wire Speed
800 IPM (20.3 mpm) max
Duty Cycle - 60%
All ratings are using Argon gas
175 Amps/25 Volts Air Cooled, 1/4" Tip (Model 276)
200 Amps/25 Volts Air Cooled, 3/8" Tip (Model 277)
225 Amps/25 Volts Water Cooled, 1/4" Tip (Model 278)
250 Amps/25 Volts Water Cooled, 3/8" Tip (Model 279)
Support Equipment required
• C.V. or C.C. power source of sufficient capacity for your needs.
• Regulated gas supply and hoses.
• Properly sized power leads from power source to wire feeder and
ground.
• Water source and hose capable of providing a minimum of 1 quart
(.95 liter) / min. at 45 p.s.i. when using water cooled guns.
Coolant requirements
WARNING: Use only Cobra Coolant - failure to use coolant will void
warranty.
Use Cobra Coolant (Aluminum Protection),which does not contain reactive
sulphur or chlorine and does not react with copper, brass or aluminum. The
Cobra Coolant is available in quantities of 1 gallon (P/N 931-0060), 5 gallon
(P/N 931-0060-5GAL), or a case of 4 gallons each (P/N 931-0060-4).
The coolant flow rate should be a minimum of 10 GPH (1 qt/min) between
35 and 45psi. Contact the re-circulator manufacturer for specifications on
pressure.
Gun Lead Connections
Power Cable - Air Cooled
A #2 power cable is used on the Cobra MX Lincoln Compatible gun. The
gun and Power Pin ends of the cable are stripped to the copper strands and
wrapped with a copper strip. A setscrew holds the cable securely in the gun
body and in the Power Manifold with torque requirements of 55-60 in-lb.
Power Cable - Water Cooled
The Cobra MX Lincoln Compatible water cooled gun utilizes a power/water
cable with a #6 AWG cable inside a 5/16” diameter hose.
The power cable ends are threaded fittings which screw into the gun body
and the Power Manifold. These connections utilize a conductive sealant and
are tightened with torque requirements of 100 + 5 IN-LB.
Conduit
The Cobra MX Lincoln Compatible comes standard with a poly-lined conduit,
for feeding aluminum wire. The longer fitting with a shallow groove is used
on the gun end. A set screw located on top of the gun handle secures the
conduit in place. The cabinet end of the conduit is secured into the Power Pin
connector with a set screw.
Gas Hose
The BLACK gas hose is pushed over a barbed fitting on the end of the gun
body and secured by twisting the hose retainer to the end of the hose (shown
next page). The opposite end of the BLACK hose is pushed over a barbed
fitting in the Power Pin. The hose retainer is re-usable and can be removed
and re-installed as needed.