Lincoln Electric IM789 WELDMARK 135 PLUS - Manual (Page 15)

B-2 B-2 OPERATION
GENERAL DESCRIPTION
The WELDMARK 135 PLUS is a complete semiauto-
matic constant voltage DC arc welding machine.
Included is a solid state controlled, single phase con-
stant voltage transformer/ rectifier power source and a
wire feeder for feeding solid steel electrode and cored
electrode.
The WELDMARK 135 PLUS is ideally suited for indi-
viduals having access to 115 volt AC input power, and
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 WELD-
MARK135 PLUS is a rugged and reliable machine that
has been designed for dependable service and long
life.
RECOMMENDED PROCESSES
The WELDMARK 135 PLUS can be used for welding
mild steel using the GMAW, single pass, process
which requires a supply of shielding gas or it can be
used for the self shielded, Innershield electrode
process (FCAW). The WELDMARK 135 PLUS is con-
figured for use with the GMAW (MIG) process as
delivered from the factory.
OPERATIONAL FEATURES AND
CONTROLS
The WELDMARK 135 PLUS has the following controls
as standard: Power ON/OFF Switch, Voltage Control,
Wire Speed Control, and a Circuit Breaker.
DESIGN FEATURES AND
ADVANTAGES
● Operates on 115 volt input .
● Solid state output control.
● “ 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.
● Easy-to-set continuous range controls for precise
setting of arc voltage and wire speed.
● Continuous voltage control.
● “ Quick Release ” idle roll pressure arm is easily
adjusted.
● Reversible, dual groove drive roll. Drive roll will
feed .023-.035
” (0.6- 0.9 mm) diameter wire.
● Accommodates both 8 ” (200 mm) diameter and 4 ”
(100 mm) diameter spools of wire.
● No external shielding gas is required when used
with Lincoln Innershield .035
” (0,9 mm) NR ® -211-
MP electrode.
● Easy to change polarity.
WELDING CAPABILITY
The WELDMARK135 PLUS, as shipped, is rated at 90
amps, 18 volts, at 20% duty cycle on a ten minute
basis. It is capable of higher duty cycles at lower out-
put currents.
LIMITATIONS
Arc Gouging cannot be performed with the WELD-
MARK 135 PLUS and it is not recommended for pipe
thawing.
CONTROLS AND SETTINGS
Refer to Figures B.1a & B.1b.
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 contin-
uous control that gives full
range adjustment of power
source output voltage.
Voltage can be adjusted
while welding.
3. Wire Speed Control —
Controls the wire feed speed
from 50
– 400 in /min (1.3 –
10 m/min). The control can
be preset on the dial to the
setting specified on the
welder Application Chart
located on the inside of the
wire feed section door. Wire
speed is not affected when
changes are made in the
voltage control.
OFF
ON
ARC VOLTS
WIRE SPEED
ON
ARC VOLTS
WELDMARK 135 PLUS