Troubleshooting & repair, Wire speed accuracy test – Lincoln Electric NA-5S User Manual
Page 115
F-62
TROUBLESHOOTING & REPAIR
F-62
2. Check for the proper wire feed inch-
es per revolution of the drive roll.
A. Set the Strike speed control to
any setting between 50 and 125
IPM. While pressing the INCH
DOWN button measure the pre-
cise length of wire fed by exactly
10 revolutions of the drive roll.
The measured length should be
within the range specified in
Table F.4 for the drive roll and
wire size employed.
B. If the measured length is not
within the specified lengths
there may be a problem with the
wire or wire feeding path. See
the
(Feeding Problems) in this sec-
tion of the manual. Also check
for correct drive roll tension
adjustment.
WIRE SPEED ACCURACY TEST
(Continued)
NA-5
DRIVE ROLL PART
WIRE SIZE RANGE
INCHES OF WIRE FED PER
NUMBER
10 REVOLUTIONS OF
DRIVE ROLL
S12778
Single .035 - .052 Solid
53 - 54
S19113
Single .045 - .052 Cored
53 - 55
S12515
Single 1/16 - 3/32
51 - 53
S12514
Single 3/32 - 5/32
49 - 51
S13161-052
Twin .045 - .052
53 - 55
S13161-5/64
Twin 1/16 - 5/64
53 - 55
S14904 (Outer)
Twin 3/32
51 - 52
S14905 (Inner)
S12514
Single 3/32 - 7/32
49 - 52
S14904 (Outer)
Twin 5/64 - 1/8
51 - 53
S14905 (Inner)
TABLE F.4