Miller Electric Spectrum Plus, Owner'S Manual

Page: 15 / 44

OM-219 Page 11
2-5. Changing Current Range Setting At DIP Switch And Bus Bars
Ref. ST-800 870-A
Current changeover dip switches
and bus bars allow operation on two
current range settings:
a High Range: 35 to 80
Amperes
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.
b Low Range: 20 to 50
Amperes
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 Main Control Board
2 Dip Switch S1 Location
3 Dip Switch S1
Move switches to low range
positions.
4 Current Changeover Bus Bars
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.
Tools Needed:
1
2
3 3
4
4
3/8, 7/16 in
O
P
E
N O
P
E
N
OR
1
2 1
2
S1
High Range
Position
S1
Low Range
Position
Means place switch
in this position.
OR
High
Range
Position
Low
Range
Position