Lincoln Electric IM774 manual Section a Installation

Models: IM774

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Section A

Installation

Technical Specifications

Wire Capacity

.030" - .045" (0.6mm - 1.2mm) solid and hard wire

.030" - 1/16" (0.8mm - 1.6mm) aluminum and cored wire

Wire Speed

800 IPM (20.3 mpm) Max at rated feeder input voltage (120VAC / 42VAC)

Duty Cycle

All ratings are using Argon gas

200 Amps/25 Volts

Air cooled - 60%

250 Amps/25 Volts

Water cooled - 60%

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 psi when using water cooled guns.

Coolant Recommendations

Use a name-brand additive, which does not contain reactive sulphur or chlorine and does not react with copper, brass or aluminum or create a custom mix using this formula:

Use 3 Gallons (11.4 Liters) Distilled water. Use 1 Gallon (3.8 Liters) ethylene glycol. Use 1 tsp (5 ml) liquid glycerin

The Coolant rate should be 1 quart (.95 liter) / minute at 35 p.s.i.

Gun Lead Connections

Power Cable - Air Cooled

A #2 AWG power cable is used on the CobraMAX™ air cooled gun. The gun end is threaded into the gun body with torque requirments of 100+5 in-lb. The power cable fitting connects to the power block in the Cobramatic® wire feed cabinet.

Power Cable - Water Cooled

The CobraMAXwater cooled gun utilizes a power/water cable with a #4 AWG cable inside a 5/8” (16MM) diameter hose. The gun end is threaded into the gun body with torque requirements of 100+5 in-lb.

IMPORTANT

Water cooled guns MUST be WATER cooled.

Conduit

The CobraMAXgun 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.

CobraMAX™ Owner's Manual - Page

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Lincoln Electric IM774 manual Section a Installation