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Wire Threading
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 matches the wire size being used. 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 frist 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).
5.Close the idle roll arm and latch the spring loaded pressure arm (2) in place. Rotate the spool coun- terclockwise if required to take up extra slack in the wire.
6.The idle roll pressure adjustment wing nut is nor- mally set for
6.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.
7.Refer to Figure B.5. Remove gas nozzle and con- tact tip from end of gun.
FIGURE B.4
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5 | 4 |
3 |
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| flipping the wire drive feed roll |
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8.Turn the Handymig 170i 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 Handymig 170i OFF (“O”).
FIGURE B.5
Gun Handle
Gas Diffuser/
Contact Tip
Gas Nozzle
12.Replace contact tip and gas nozzle.
13.Refer to Figure
– 10 mm) from the end of the tip. The Handymig 170i is now ready to weld.
Handymig 170i
