Electrode And Work Connections - Lincoln Electric POWER MIG 215 MPi Operator's Manual

POWER MIG 215 MP
®

ELECTRODE AND WORK CONNECTIONS

OUTPUT POLARITY CONNECTIONS
The Power MIG® 215 MP features a short lead protruding from
the
polarity. For SMAW and GTAW welding the short lead does not need
to be connected and this lead will not be electrically hot. For FCAW
and GMAW welding this lead can be connected to either the positive
output stud or negative output stud. Connecting the lead to the
positive stud will electrically connect the wire drive to positive
polarity; the work clamp would then connect to the negative stud.
Ensure connector is tightly locked into place by rotating clockwise.
Figure B.3 Wire drive connected for positive polarity
PROCEDURE FOR CHANGING DRIVE AND IDLE ROLL SETS
1. Turn off the power source.
2. Release the pressure on the idle roll by swinging the adjustable
pressure arm down toward the back of the machine. Lift the cast
idle roll assembly and allow it to sit in an upright position.
3. Remove the outside wire guide retaining plate by loosening the two
large knurled screws.
4. Twist the drive roll retaining mechanism to the unlocked position
as shown below and remove the drive roll.
5. Remove the inside wire guide plate.
6. Replace the drive roll and inside wire guide with a set marked for
the new wire size.
NOTE: Be sure that the gun liner and contact tip are also sized to
match the selected wire size.
7. Manually feed the wire from the wire reel, over the drive roll groove
and through the wire guide and then into the brass bushing of the
gun and cable assembly.
8. Replace the outside wire guide retaining plate by tightening the two
large knurled screws. Reposition the adjustable pressure arm to its
original position to apply pressure. Adjust pressure as necessary.
16
INSTALLATION