Lincoln Electric IM10110 IDEALARC R3R-400 - Manual (Page 10)

B-1 OPERATION B-1
ELECTRIC SHOCK can kill.
• Do not touch electrically live parts
or electrode with skin or wet cloth-
ing.
• Insulate yourself from work and ground.
• Always wear dry insulating gloves.
FUMES AND GASES can be danger-
ous.
• 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.
NOTE: The P.C. Board is 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 odor for a short time. These resistors and
the P.C. Board beneath them may become blackened.
This is a normal occurrence and does not damage the
component or affect the machine performance.
1. To Start the Welder, move the “Power” switch to
“On”. This starts the welder and lights the white pilot
light on the machine control panel. This light indi-
cates that the line contactor is energized).
2. Setting Welding Current
a. The “Current Control” dial on the front of the
machine indicates the output current at the
NEMA arc voltage.
On the R3R-400 two dials are used, The “A”
range controls the current over about 1/2 of the
range 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.
b. Provisions for remote control are standard on
each power source. A current control switch on
the machine control panel labeled “Current
Control at R3R” or “Current Control Remote” is
provided for selecting the desired mode of oper-
ation, either at the machine or remote, Be certain
the machine remote switch is in the machine
position, unless a remote control is connected,
or the R3R is equipped with optional pocket
amptrol.
c. The “Arc Force Control”, located on the right side
of the front control panel, is calibrated from one
to ten. Lower settings will provide less short cir-
cuit current and a softer arc. A setting that is too
low may cause the electrode to stick in the pud-
dle. Higher settings will provide a higher short
circuit current, a more forceful arc, and possibly
more spatter. For most welding, the dial should
be set at approximately mid range (5
– 6).
Adjustment up or down can then be made
depending on the electrode, procedures, and
operator preference. For most TIG welding appli-
cations adjust this control to minimum for best
operating characteristics.
OPTIONAL EQUIPMENT
1. Remote Current Control – See “Operation”.
2. Amptrol – See “Operation”.
3. Polarity Switch (Factory Installed Only). Permits
changing polarity at the machine output terminals.
(See also “Output Connections”.)
4. Meters – Ammeter and Voltmeter (Factory Installed
Only)
RATINGS
Transformer insulation class 155(F)
IP21 enclosure protection
IDEALARC ® R3R-400
WARNING