Lincoln Electric IM726 SP-175T - 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-175T is rated at 130 amps, 20 volts, at 30%
duty cycle on a ten minute basis. It is capable of high-
er output currents at lower duty cycles. .
LIMITATIONS
Arc Gouging cannot be performed with the SP-175T.
The SP-175T 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 (1.2 –
10.2 m/min). The control can
be preset on the dial to the
setting specified on the SP-
175T Application Chart
located on the inside of the
wire feed section door.
OFF
ON
ARC VOLTS
WIRE SPEED
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).
5. 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.
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 welding 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 imme-
diately.
Time Control - In Spot mode, controls spot mode
ON time between approximately .25 and 4.0 sec-
onds. 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.
SP-175T