Changing Current Range Setting At Dip Switch And Bus Bars - Miller Electric Spectrum Plus Owner's Manual

2-5. Changing Current Range Setting At DIP Switch And Bus Bars

1
2
3
O
P
1
OR
E
2
N
S1
High Range
Position
Means place switch
in this position.
Tools Needed:
3/8, 7/16 in
3
O
P
1
E
2
N
S1
Low Range
Position
4 OR
High Low
Range Range
Position Position
Current changeover dip switches
and bus bars allow operation on two
current range settings:
See rear cover for welding power
source/generator cutting capacity.
Current range is factory set for the
high current range. If welding power
source/generator cutting capacity
is 3/4 to 7/8 in (19 to 22 mm), keep
cutter set for the high current range.
Use low range position when 50
volts or less input operating voltage
is available. To change current
range setting, proceed as follows:
Remove bottom and top of case ac-
cording to Section 4-2.
1
2
3
Move switches to low range
positions.
4
To move bus bars, peel back vinyl
coating covering bus bars. Move
bus bars to match operating volt-
age. Tighten bus bars, and cover
connections with suitable vinyl
coating.
Reinstall top and bottom of case
and go on to Section 2-6.
4
a High Range: 35 to 80
Amperes
b Low Range: 20 to 50
Amperes
Main Control Board
Dip Switch S1 Location
Dip Switch S1
Current Changeover Bus Bars
Ref. ST-800 870-A
OM-219 Page 11