Section 2 - Operating Instructions - Lincoln Electric REDI-MIG 325 Remote Operating Manual

• Do not touch electrically live
parts or electrode with skin or
wet clothing.
• Insulate yourself from work
and ground.
ELECTRIC
• Always wear dry insulating
SHOCK
gloves.
can kill
• Keep your head out of fumes.
• Use ventilation or exhaust to
remove fumes from breathing
zone.
FUMES AND
GASES can be
dangerous
• Keep flammable material
away.
• Do not weld upon containers
which
WELDING SPARKS
combustibles.
can cause fire
or explosion
• Wear eye, ear and body
protection.
ARC RAYS
can burn
IMPORTANT SAFETY NOTE: In 2T mode {refer 2.2 (h)}, this DC
Constant Voltage wire welder provides "COLD" electrode when the gun
trigger is not operated. Conversely, the output terminals are "LIVE" when
the gun trigger is "activated" when pressed in 2T mode, or triggered on in
4T mode.
2.1 Duty Cycle
The machine is rated at the following duty cycles:
Duty Cycle (1)
30%
60%
100%
(1) Based on 10 min. time period (i.e., for 60% duty cycle, it is 6
minutes actual welding and 4 minutes with no welding output,
but with the input power remaining on keeping the cooling fan
operative.)
Page 10

Section 2 - OPERATING INSTRUCTIONS

WARNING
have held
Amps Volts
325 30
240 26
190 23.5
2.2 Control Panel
a) Power Switch
The mains power switch is incorporated in the "coarse"
output voltage control rotary switch. In the "OFF" position
the input mains power is switched off.
b) Pilot Light
This light illuminates when the input mains power is
switched on.
c) Volts Control
The output voltage is controlled by a two rotary switches.
One rotary switch provides four "course" voltage setting as
well as switching the machines power on. The other rotary
switch provides the user with a selection of eight fine
voltage settings. The selection between these two rotary
switches allows the user to select any one of thirty-two
welding voltages.
The approximate weld voltages for the rotary switch
positions are:
Coarse
A
A
A
A
A
A
A
A
C
C
C
C
C
C
C
C
d) Wire Feed Speed Control *
Use this control to adjust the speed at which the electrode
wire feeds when welding. This is in effect a current control
as the power source will deliver the current necessary to
melt the wire. The higher the speed, the more current will
be required. Wire feed speed range is approximately 1 to
20 meters/min (40 to 790 inches/min.).
Operation of the gun trigger switches the wire feed motor
on and off, depending upon the trigger mode setting. The
wire feed motor is dynamically braked to minimise wire
overrun after welding has ceased.
Welding voltage is available immediately the gun trigger is
operated. When welding is stopped there is a delay to allow
the electrode to burn back slightly and prevent sticking in
the crater. [See Burnback Control 2.2 e)]
REDI-MIG 325
Fine Volts Coarse Fine
a 13.0 B
b 14.0 B
c 15.0 B
d 16.0 B
e 16.5 B
f 17.0 B
g 17.5 B
h 18.0 B
a 21.5 D
b 22.0 D
c 22.5 D
d 23.0 D
e 23.5 D
f 24.0 D
g 24.5 D
h 25.0 D
Volts
a 18.0
b 18.5
c 19.0
d 19.5
e 20.0
f 20.5
g 21.0
h 21.5
a 25.0
b 25.5
c 26.0
d 26.5
e 27.0
f 28.0
g 29.0
h 30.0
IMA 599B