Gun Lead Connections; Coolant Connections; Gun Tube Removal/Installation; Lead Assy Spiral Wrap Installation - Lincoln Electric MAGNUM PRO AL G225A Manual

MAGNUM PRO AL Gun
®

GUN LEAD CONNECTIONS

POWER CABLE
Air Cooled
A #2 power cable is used on the Lincoln Electric Magnum
AL Gun.
• The gun end of the power cable is secured into the gun body
with a set screw, and the power pin end is threaded into the
gun body.
• These connections utilize a conductive sealant and are
tightened with torque requirements of 100 + 5 IN-LB.
Water Cooled
• Lincoln Electric Magnum
utilizes a power/water cable with a #6 AWG cable inside a
5/16" diameter hose.
• When water is used with this cable and the #10 water cooled
gas nozzle (P/N KP3375-1), the system is rated at 450 amps
@ 60% duty cycle.
• The gun end is threaded into the gun body.
• These connections utilize a conductive sealant and are
tightened with torque requirements of 100 + 5 IN-LB.
CONDUIT
• The Lincoln Electric Magnum
with a poly-lined conduit, for feeding aluminum wire.
• The longer fitting with a shallow groove is used on the gun
end.
• Both ends of the conduit are 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 below).
• 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.
CONTROL CABLE
• A multi-conductor control cable is used on the Lincoln Electric
Magnum Pro AL Gun 7 and 12 pin.
®

COOLANT CONNECTIONS

• The ends of the coolant hose push over a barbed fitting on
the end of the rear connector and are secured by twisting the
hose retainer to the end of the hose.
• The hose retainer is re-usable and can be removed and
re-installed as needed.
• The BLUE coolant supply hose pushes over a barbed fitting
and is secured by twisting the hose retainer to the end of the
hose.
®
Pro AL Gun water cooled gun
®
Pro AL Gun comes standard
®
• The opposite end of the BLUE hose pushes into a threaded
coolant fitting.
• The RED coolant return hose pushes over the barbed fitting
in the Power Manifold.
• The opposite end of the RED hose pushes into a threaded
Pro
return hose of the coolant recirculator.
• Both threaded fittings on the end of the BLUE and RED
hoses are standard left-hand thread.
S29830-14
5/16" Hose Retainer
COOLANT REQUIREMENTS
WARNING: Use Magnum Pro AL Coolant only - failure to use
coolant will void warranty.
• Coolant is available in quantities of 1 gallon, 5 gallon (P/N
KP3379-5), or a case of 4 gallons each (P/N KP3379-4).
• 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 TUBE REMOVAL/
INSTALLATION
WARNING: Do not attempt to weld without the gun tube being
tightly secured in the gun body, or damage to the gun tube or
body may result.
a. To remove the gun tube assembly, loosen the taper lock nut until
it is clear of the threads. Pull gun tube out of the gun body.
b. To replace a gun tube assembly, open the drive and idler roll
door and seat the gun tube assembly until the plastic liner is
almost touching the drive and idler roll (Figure 1) and the rear
copper face of the gun tube is flush with the aluminum body
block (Figure 2).
c. Take care not to damage the "O" rings when inserting into the
body. You should hear an audible "click" when the gun tube is
inserted and seated.
d. Tighten taper lock nut assembly firmly so that gun tube
cannot rotate.
Gun Tube Rotation
a. To rotate a gun tube assembly, loosen the taper lock nut
assembly no more than 1 turn.
b. Rotate gun tube to the position of your choice and retighten taper
lock nut assembly firmly so that the gun tube cannot rotate.
LEAD ASSY SPIRAL WRAP
Figure 1
A - 2
S29830-97*
Left-Hand Threaded Fitting
*Must be ordered together
Copper face of gun tube
Plastic liner
Figure 2
INSTALLATION
S29830-96*
Nipple