Operation - Lincoln Electric IDEALARC R3R 500-I Operating Manual

ELECTRIC SHOCK can kill.
• Do not touch electrically live parts or
electrode with skin or wet clothing.
• Insulate yourself from work and ground.
• Always wear dry insulating gloves.
FUMES AND GASES can be dangerous.
• Keep your head out of fumes.
• Use ventilation or exhaust to remove fumes
from breathing zone.
WELDING SPARKS can cause fire or
explosion.
• Keep flammable material away.
• Do not weld on containers that have held
combustibles.
ARC RAYS can burn.
• Wear eye, ear and body protection.
STARTING THE MACHINE
The "power on-off" switch on the machine control panel energises
the three phase line contactor from a small 115 volt pilot
transformer. This in turn energises the main power transformer.
Note: All PC boards are protected by a moisture resistant coating.
When the welder is operated, this coating will "bake off" of certain
power resistors that normally operate at high temperatures,
emitting some smoke and odour for a short time. These resistors
and the PC board beneath them may become blackened. This is
a normal occurrence and does not damage the component or
affect the machine performance.
PILOT LIGHT
The red light on the machine control panel indicates when The
line contactor is energised.
Note: If the amber High Temperature Warning Light is lit, it
indicates that one or both of the protective thermostats has
opened the line contactor.
Page 8

OPERATION

OUTPUT CONTROL
The "current control" dial (labelled "I") on the front of the machine
indicates the output current.
On the R3R 500-I, and 600-I, there are two dials. The "A" range
controls the current over about 1/2 of the "B" range. A toggle
switch on the control panel allows selection of the desired range.
The output control can be adjusted while welding.
MACHINE OR REMOTE CURRENT CONTROL
SWITCH
Provisions for remote control are standard on each power source.
A current control switch on the machine control panel labelled
" "or "
operation, either remote (
ARC FORCE CONTROL
The arc force control, located on the right side of the front control
panel, is calibrated from one to ten. For most welding, the dial
should be set at approximately mid-range, 5-6. Adjustments up or
down can then be made depending on the electrode, procedures,
and operator preference. Lower settings will provide less short
circuit current and a softer arc. A setting that is too low may cause
the electrode to stick in the puddle. Higher settings will provide a
higher short circuit current and a more forceful arc. Excessive
spatter may result if the control setting is too high. For most TIG
welding applications, adjust this control to minimum for best
operating characteristics.
Idealarc R3R 500-I & 600-I
" is provided for selecting the desired mode of
)or at the machine ( ).
IM 6000