Installation; Safety Precautions; Location; High Frequency Protection - Lincoln Electric LN-25 Service Manual

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SAFETY PRECAUTIONS

WARNING
ELECTRIC SHOCK can kill.
• Turn the input power OFF at the
disconnect switch or fuse box
before attempting to connect or
disconnect input power lines, out-
put cables or control cables.
• Only qualified personnel should perform this

installation.

• Do not touch metal portions of the LN-25™ PIPE
work clip when the welding power source is on.
• Do not attach the work clip to the wire feeder.
• Connect the work clip directly to the work, as
close as possible to the welding arc.
• Turn power off at the welding power source
before disconnecting the work clip from the work.
• Only use on power sources with open circuit volt-
ages less than 110 VDC.
------------------------------------------------------------------------

LOCATION

For best wire feeding performance, place the LN-25™
PIPE on a stable and dry surface. Keep the wire feed-
er in a vertical position. Do not operate the wire feed-
er on an angled surface of more than 15 degrees.
Do not submerge the LN-25™ PIPE.
RECOMMENDED CABLE SIZES (RUBBER COVERED COPPER - RATED 167°F or 75°C)**
AMPERES PERCENT
DUTY
CYCLE
200 60
200 100
225 20
225 40 & 30
250 30
250 40
250 60
250 100
300 60
325 100
350 60
400 60
400 100
500 60
** Tabled values are for operation at ambient temperatures of 104°F(40°C) and below. Applications above 104°F(40°C) may require cables
larger than recommended, or cables rated higher than 167°F(75°C).
INSTALLATION
TABLE A.1
CABLE SIZES FOR COMBINED LENGTHS OF ELECTRODE AND WORK CABLES
0 to 50Ft. 50 to 100Ft.
(0 to15m)
(15 to 30m)
2
2
4 or 5
3
3
2
1
1
1
2/0 2/0
1/0 1/0
2/0 2/0
3/0
3/0
2/0
2/0
LN-25™ PIPE
The LN-25™ PIPE is rated IP23 and is suitable for out-
door use.
The handle of the LN-25™ PIPE is intended for mov-
ing the wire feeder about the work place only.
When suspending a wire feeder, insulate the hanging
device from the wire feeder enclosure.

HIGH FREQUENCY PROTECTION

Locate the LN-25™ PIPE away from radio con-
trolled machinery. The normal operation of the LN-
25™ PIPE may adversely affect the operation of RF
controlled equipment, which may result in bodily
injury or damage to the equipment.
------------------------------------------------------------------------

WELD CABLE SIZE

Table A.1 located below are copper cable sizes recom-
mended for different currents and duty cycles. Lengths
stipulated are the distance from the welder to work and
back to the welder again. Cable sizes are increased for
greater lengths primarily for the purpose of minimizing
cable drop.
100 to 150 Ft.
(30 to 46m)
2 2
2 2
3
2
3
2
3 2
2 1
1 1
1 1
1 1
2/0
2/0
2/0
3/0
3/0
CAUTION
150 to 200 Ft. 200 to 250 Ft.
(46 to 61m)
(61 to 76m)
1 1/0
1 1/0
1 1/0
1 1/0
1 1/0
1 1/0
1 1/0
1 1/0
1/0
2/0
2/0
3/0
2/0 3/0
3/0 4/0
3/0 4/0
3/0 4/0
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