Lincoln Electric IM591 UWW-170 - Manual (Page 15)

B-2 B-2 OPERATION
● No external shielding gas is required when used
with Lincoln Innershield .035
” (0,9 mm) NR ® -211-
MP electrode.
● Spindle accommodates both 8 in. (200 mm) diame-
ter and 4 in. (100 mm) diameter spools of wire.
● Accepts optional Spot/Stitch Timer Kit.
WELDING CAPABILITY
The SP 170-I is rated at 125 amps, 20.25 volts, at
25% duty cycle on a ten minute basis. It is capable of
higher output currents at lower duty cycles. Actual
welding outputs will range between 30 and 170 amps
for the recommended processes.
LIMITATIONS
Arc Gouging cannot be performed with the SP 170-I.
The SP 170-I is not recommended for pipe thawing or
TIG welding.
CONTROLS AND SETTINGS
Refer to Figures B.1a,
B.1b and B.1c.
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-position 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 con-
trol can be preset on the dial to the
setting specified on the SP 170-I
Application Chart located on the
inside of the wire feed section door.
4. Temperature Light — Indicates
thermostat has cut the output. The
fan will be running. Thermostat
resets automatically.
FIGURE B.1a
5. Circuit Breaker – Protects machine from damage if maxi-
mum output is exceeded. Button will extend out when
tripped (Manual reset).
OFF
ON
ARC VOLTS
WIRE SPEED
6. Optional K695-1 Spot/ Stitch Timer Kit Controls (see
ACCESSORIES section) - If present, replaces Blank
Panel Assembly located on the center panel inside the
case door:
Mode Switch - Selects between Spot, Stitch, or Seam
(normal welding) mode. Spot mode welds for an
adjustable length of time (set by Time Control; see
below) and then stops, whenever the gun trigger is
depressed and held. Stitch mode cycles between weld-
ing and not welding for an adjustable length of time (also
set by Time Control) while the gun trigger is depressed.
In Seam mode the machine will weld continuously while
the gun trigger is depressed. Releasing the gun trigger in
any of the three modes will interrupt welding immediate-
ly.
Time Control - In Spot mode, controls spot mode ON
time between approximately .25 and 4.0 seconds. In
Stitch mode, controls stitch mode ON time and OFF time
simultaneously between .25 and 4.0 seconds each. This
control is deactivated while in Seam mode.
7. Gun Trigger - Activates welding output, wire feed, and
gas solenoid operation. Releasing the trigger deactivates
welding and simultaneously activates the
“ burnback ”
function so that the welding wire does not stick in the
weld puddle.
FIGURE B.1b
FIGURE B.1c
SP 170 - I
1
2 3 4
E
+
-
5
6
SP 170-I