Lincoln Electric IM795 Operator's Manual page 19

B-4
Refer to Figure B.4
1. Release the Spring Loaded Pressure Arm (1)
rotate the Idle Roll Arm (2) away from the Wire
Feed Drive Roll (3). Ensure that the groove size
in the feeding position on the drive roll match-
es the wire size being used. This occurs when
the desired groove is located on the inside, toward
the feedplate. See Maintenance section for further
information.
2. Carefully detach the end of the wire from the
spool. To prevent the spool from unwinding, main-
tain tension on the wire until after step 5.
3. Cut the bent portion of wire off and straighten the
first 4" (100 mm).
4. Thread the wire through the ingoing guide tube
(4), over the drive roll (3), and into the outgoing
guide tube (5). Check the alignment of the wire
over the drive roll groove and adjust if necessary.
If alignment adjustment is necessary use the allen
wrench provided to loosen the drive roll, move it to
the desired position and then retighten.
5. Close the idle roll arm (2) and latch the spring
loaded pressure arm (1) in place. Rotate the spool
counterclockwise if required to take up extra slack
in the wire.
6. The idle roll pressure adjustment wing nut is factory
set to approximately five full turns from where the
wing nut first engages the threads of the pressure
arm (1). If feeding problems occur because the wire
is flattened excessively, turn the pressure adjust-
ment counter-clockwise to reduce distortion of the
wire. Slightly less pressure may be required when
using 0.023 – 0.025" (0,6 mm) wire. If the drive roll
slips while feeding wire, the pressure should be
increased until the wire feeds properly.
WARNING
When inching the welding wire, the drive rolls, the
gun connector block and the gun contact tip are
electrically energized relative to work and ground
and remain energized for several seconds after
the gun trigger is released.
OPERATION
2
5
3
7. Refer to Figure B.5. Remove gas nozzle and con-
tact tip from end of gun.
8. Turn the SP 170-I ON ("I").
9. Straighten the gun cable assembly.
10. Depress the gun trigger switch and feed welding
wire through the gun and cable. (Point gun away
from yourself and others while feeding wire.)
Release gun trigger after wire appears at end of
gun.
11. Turn the SP 170-I OFF ("O").
12. Replace contact tip and gas nozzle.
13. Refer to Figure B-6. Cut the wire off 3/8" – 1/2" (10
– 12 mm) from the end of the tip. The SP 170-I is
now ready to weld.
SP 170-I
1
4
The Wire Drive Feed Roll can
accommodate two wire sizes by
flipping the wire drive feed roll
over.
FIGURE B.4
Gun Handle
Gas Diffuser
Contact Tip
Gas Nozzle
FIGURE B.5
B-4