Mounting location, Power source connections, Ln-8n and ln-8ne – Lincoln Electric LN-8 SVM132-A User Manual
Page 9: Installation, Caution
A-3
INSTALLATION
LN-8
A-3
MOUNTING LOCATION
The LN-8 can be operated as a free-standing unit, or it
can be mounted to an undercarriage when portability
is required. Refer to
for avail-
able under carriage, mounting platform, or wire reel
stands.
POWER SOURCE CONNECTIONS
Use the type of power source required for the specific
welding application.
Never operate a Lincoln Squirt welder wire feeder with
a power source that has a jumper from #2 to #4 on the
terminal strip, or with a power source without a
contactor. To do so would defeat the ground lead
protector circuit and could result in overheating of the
electrical ground circuit to the wire feeder.
____________________________________
A constant voltage power source is required for
Innershield electrode and other open arc welding. It is
often preferred for small, single pass submerged arc
welds at fast travel speeds.
Formerly, a constant current power source was rec-
ommended for most submerged arc welding. With the
innovation of the new DC power sources, a special
mode (CV Sub-Arc) is available and is preferred for
most submerged arc welding.
The LN-8N and LN-8NE, when shipped, can only be
used with a constant voltage power source. These
models can be converted to weld with a constant cur-
rent power source with the installation of the proper
conversion parts.
The LN-8S and LN-8SE, when shipped, can weld with
either a constant voltage or constant current power
source. Be sure that both the power source and the
wire feeder are properly set for the required procedure.
section
when connecting the LN-8 to a Lincoln power source.
LN-8N AND LN-8NE
Use a constant voltage type power source. If the LN-8
has been converted to weld with a constant current
power source, use the instructions for the LN-8S.
1. If using a multi-purpose power source, be sure it
is set for constant voltage welding per the
instructions in the power source operating
manual.
2. Connect the LN-8 input cable to the power source
exactly as specified on the appropriate
connection diagram, see
jumpers on the terminal strips as shown in the
applicable diagram.
3. Connect a work lead of sufficient size and length
per Table A.1, between the appropriate output
terminal on the power source and the work.
Ensure the connection to the work makes tight
metal-to-metal contact.
TABLE A.1 – WORK LEAD SPECIFICATIONS
Copper Work Cable Length
Current Amps
60% Duty
25 ft
50 ft
100 ft
Cycle
(7.5 m)
(15 m)
(45 m)
300
0
0
000
400
00
00
0000
500
00
000
0000
600
000
000
Two 000
CAUTION