Lincoln Electric LN-8 SVM132-A Manuel d'utilisateur télécharger pdf (Page 9)

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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 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.

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.

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 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

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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 98 99

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Lincoln Electric LN-8 SVM132-A Manuel d'utilisateur Page 9

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