Installation, Warning – Lincoln Electric IM994 RED-D-ARC LN-25 PRO EXTREME (CE) User Manual

Page 12

A-3

INSTALLATION

RED-D-ARC LN-25™ PRO DUAL POWER (CE)

A-3

SHIELDING GAS CONNECTION

CYLINDER may explode if

damaged.

• Keep cylinder upright and

chained to support.

• Keep cylinder away from areas where it may be

damaged.

• Never lift welder with cylinder attached.
• Never allow welding electrode to touch cylinder.
• Keep cylinder away from welding or other live

electrical circuits.

• BUILD UP OF SHIELDING GAS MAY

HARM HEALTH OR KILL.

• Shut off shielding gas supply when not

in use.

• See American National Standard Z-49.1, "Safety

in Welding and Cutting” Published by the
American Welding Society.

------------------------------------------------------------------------

Maximum inlet pressure is 100 psi. (6.9 bar.)

Install the shielding gas supply as follows:

1. Secure the cylinder to prevent it from falling.
2. Remove the cylinder cap. Inspect the cylinder valves

and regulator for damaged threads, dirt, dust, oil or
grease. Remove dust and dirt with a clean cloth. DO
NOT ATTACH THE REGULATOR IF OIL, GREASE
OR DAMAGE IS PRESENT! Inform your gas supplier
of this condition. Oil or grease in the presence of high
pressure oxygen is explosive.

3. Stand to one side away from the outlet and open the

cylinder valve for an instant. This blows away any dust
or dirt which may have accumulated in the valve out-
let.

4. Attach the flow regulator to the cylinder valve and

tighten the union nut(s) securely with a wrench. Note:
if connecting to 100% CO2 cylinder, insert regulator

adapter between regulator and cylinder valve. If
adapter is equipped with a plastic washer, be sure it is
seated for connection to the CO2 cylinder.

5. Attach one end of the inlet hose to the outlet fitting of

the flow regulator. Attach the other end to the welding
system shielding gas inlet. Tighten the union nuts with
a wrench.

6. Before opening the cylinder valve, turn the regulator

adjusting knob counterclockwise until the adjusting
spring pressure is released.

7. Standing to one side, open the cylinder valve slowly a

fraction of a turn. When the cylinder pressure gage
stops moving, open the valve fully.

8. The flow regulator is adjustable. Adjust it to the flow

rate recommended for the procedure and process
being used before making a weld.

WARNING

CABLE CONNECTIONS

There is one circular connector for the gun trigger on
the front of the Red-D-Arc LN-25™ PRO DUAL
POWER.

WARNING

Pin

A
B

C
D

Wiring

Trigger

Not used

Common

Not used
Not used

CONTROL CABLE CONNECTOR

The control cable connector is present only on the
Dual Power and Control Cable Feeders.

ELECTRIC SHOCK can kill.
• Do not touch electrically live parts.
• Welding Voltage is present on pins H,

I, K and N when Dual Power feeders
are operating as Accross the Arc
feeder.

Function

5-pin trigger
connector for
push-guns
only.

Pin

A
B

C
D

Picture

Wiring

Not used
Not used

Output Control to Power Source (2-4)
Output Control to Power Source (2-4)
Remote Voltage Control 77
Remote Voltage Control (wiper) 76
Remote Voltage Control 75

Work Sense Lead 21

42VAC

Not used

42VAC

Not used
Not used

Electrode Sense Lead 67

WIRE FEEDER