19
tive output terminal.
Standard polarity is
“+” (DCEP) with the work clamp in the (-) neg-
ative output terminal. For flux core use see
manufacturer’s direction for polarity recom-
mendation. See TABLE 1 for complete recom-
mendations
3.
Burn Back Timer Control.
The burn-back con-
trol helps to prevent too much stick out when
stopping and restarting a weld, by keeping the
arc energized for a short time after the wire
feeder stops feeding and while the gas is post
flowing. The wire will burn back to the length
desired by adjusting the control. This improves
re-starts and keeps the user from having to re-
trim the wire between welds. It should also be
adjusted while feeding aluminum, preventing
the wire from burning back into the tip and
seizing.
4.
Wire Feed Assembly.
Note the numbers on
the side of the tensioner. These numbers are a
reference point to help properly tension the
wire so that the drive roller will not slip. Do
not over tension the wire because it can create
a condition known as birds nesting, where the
wire will ball up trying to feed if too much re-
sistance is met. Too little tension will result in
wire slipping and fast wear on the drive com-
ponents. Note that while welding aluminum,
the tension is absolutely critical. Do not de-
form the wire. Use 50XX series wire for Alumi-
num, with a diameter of .040” for best results.
Test the tension of the wire and inspect for
proper feeding before beginning a weld. Oc-
casionally cleaning of the feeder mechanism is
necessary to prevent wear and damage to the
feeder and to the MIG gun liner. Monitor any
metal flaking that may occur, and dirt accumu-
lation and clean it away gently with com-
pressed air as necessary. Use proper safety
attire while doing this, i.e. glasses, gloves etc to
prevent injury. Do not use cleaners or sol-
vents. Felt wire lubricators may be bought and
used to keep feeding cleanly while using steel
or stainless wire.
Setup Guide and component Identification
Section 2
NOTE: Keep welder at least 10
-
12 inches away
from all objects for proper cooling. Regularly
inspect and clean the welder, and its circuits on a
quarterly basis with dry compressed air. Remove
the covers only after the unit has been turned off
and discharged for 30 minutes to help prevent
electrocution.
Summary of Contents for Power MTS 160
Page 28: ...28 NOTES...
