Mounting Location; Power Source Connections; Ln-8N And Ln-8Ne - Lincoln Electric LN-8 SVM132-A Service Manual

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 Accessories Section 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.
CAUTION
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.
Refer to the "Input Cable Connections" section
when connecting the LN-8 to a Lincoln power source.
INSTALLATION

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
connection diagram, see Table A.2. Include any
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
Current Amps
60% Duty
Cycle
300
400
500
600
LN-8
as specified on the
Copper Work Cable Length
25 ft 50 ft
(7.5 m) (15 m)
0 0
00 00
00 000
000 000
A-3
appropriate
100 ft
(45 m)
000
0000
0000
Two 000