Lincoln Electric PRO 155, Operator'S Manual

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B-2
PRO 155
B-2
OPERATION
GENERAL DESCRIPTION
The PRO 155 is a compact lightweight DC wire feed-
er/power source. It has been designed for workshop,
hobby, and light maintenance. It is capable of general
purpose welding with self-shielded flux-cored
(Innershield
®
) wire. When combined with the optional
K610-2 MIG Conversion Kit, the PRO 155 is suitable
for GMAW (MIG) welding applications.
The PRO 155 operates on 208/230 volt 60 Hz AC
input power. It is ideally suited for individuals wanting
the ease of use, quality and dependability of both gas
metal arc welding or GMAW (also known as MIG
welding) and the Innershield electrode process (self
shielded flux cored or FCAW). The PRO 155 is a
rugged and reliable machine that has been designed
for dependable service and long life.
RECOMMENDED PROCESSES
The PRO 155 can be used for welding mild steel using
the self shielded, Innershield electrode process
(FCAW) or it can be used for the GMAW, single pass,
process which requires a supply of shielding gas and
the K610-2 MIG Conversion Kit. The PRO 155 is con-
figured for use with the FCAW process as delivered
from the factory.
OPERATIONAL FEATURES AND
CONTROLS
The PRO 155 has the following controls as standard:
Power ON/OFF Switch, Voltage Control, Wire Speed
Control, Trigger Switch, and a Circuit Breaker.
DESIGN FEATURES AND
ADVANTAGES
●
Compact — portable.
●
“ Cold electrode ” until gun trigger is pressed for an
added measure of safety.
●
Overload protection — incorporates both a thermo-
stat and a circuit breaker.
●
Quality wire drive with electronic overload protec-
tion.
●
“ Quick Release ” idle roll pressure arm is easily
adjusted.
●
Reversible, dual groove drive roll. Drive roll will
feed .045
” (1.2 mm) diameter wire.
●
No external shielding gas is required when used
with Lincoln Innershield .045
” (1.2 mm) NR
®
-211-
MP electrode.
●
Accommodates 4 ” (100 mm) diameter spool of
wire. Will accommodate 8 ” (200 mm) diameter with
optional spindle.
WELDING CAPABILITY
The PRO 155 is rated at 130 amps, 20 volts, at 20%
duty cycle on a ten minute basis when connected to
208V input. With a 230V input connection the rated
output is 130 amps at 20 volts at 30% duty cycle. It is
capable of higher output currents at lower duty cycles.
LIMITATIONS
Arc Gouging cannot be performed with the PRO 155.
The PRO 155 is not recommended for pipe thawing or
TIG welding.
CONTROLS AND SETTINGS
Refer to Figure B.1a.
1. Power ON/OFF Switch —
When the power is on the
fan motor will run and air will
be exhausted out the louvers
in the front of the machine.
The welding output and wire
feeder remain off until the
gun trigger is pressed.
2. Voltage Control — A 5-posi-
tion tap selector switch gives
full range adjustment of
power source output voltage.
Do not switch while welding.
3. Wire Speed Control —
Controls the wire feed speed
from 50
– 400 in /min (1.3 –
10.2 m/min). The control can
be preset on the dial to the
setting specified on the PRO
155 Application Chart locat-
ed on the inside of the wire
feed section door.
Refer to Figure B-1b.
4. Circuit Breaker – Protects machine from damage if
maximum output is exceeded. Button will extend
out when tripped (Manual reset).
OFF
ON
ARC VOLTS
WIRE SPEED
ARC VOLTS
ON