Operation, Warning – Lincoln Electric LN-25 SVM114-C User Manual
Page 16
OPERATION
B-4
B-4
LN-25™
WORK CLIP LEAD
IMPORTANT SAFETY NOTE: To avoid possible
electrical shock, do not touch the metal portions of
the LN-25™ work lead clip if the power source output
is on. The clip will be electrically “HOT” to work if the
input electrode cable to the LN-25™ is electrically
“HOT” even if the gun trigger is off and even if an
internal contactor is used. Care should be taken to
only handle the LN-25™ work clip by its non-metal
insulated portions and/or the welding power source
should be turned off before handling the work clip.
The 15 ft work clip lead attached to the front panel of
the LN-25™ case must be connected directly to the
work using the spring clip on the end of the lead.
If not connected, the LN-25™ will not operate even
if a K431-1 or K624-1 (42V) Remote Output Control
option (refer to Accessories Section) is used.
However, the electrode will still be electrically “HOT”
when the clip lead is dis connected, if K431-1 or
K624-1 (42V) Remote Output Control Option, or
Internal Contactor (K443-1, 2 or3), is not used.
NOTE: The clip lead also serves as a work sensing
lead for the LN-25™ Voltmeter (if installed). If the clip
lead is extended by the user beyond the standard 15
ft. (4.6m) length, the voltmeter reading will be lower
than the actual arc volts due to the LN-25™ motor
control cur rent flowing through the resistance of the
extended lead. To minimize this voltmeter error, the
following minimum lead size is recommended for the
maximum extended lengths shown:
AWG
Maximum Length
#14
25 Ft (7.6m)
#12
50 Ft (15.2m)
#10
100 Ft (30.5m)
#6
200 Ft (61m)
REMOTE ARC VOLTAGE CONTROL (OPTIONAL)
This rheostat control allows you to control the power
source output arc voltage level. Refer to K444, K444-1
and K444-2 Remote Voltage Kits in the Accessories
section.
GAS FITTING (OPTIONAL)
Provides gas output connection to the welding gun for
the GMAW process. Refer to K430-1 or 2 Gas
Solenoid Kit in the Accessories Section.
GAS POST PRE-FLOW TIMERS (OPTIONAL)
Allows for variable adjustment of gas pre-flow & post-
flow at the start and end of the weld. Refer to K434-1
Gas Flow Timer Kit in Accessories Section.
WARNING
WARNING
ELECTRIC SHOCK can kill.
• Do not touch metal portions
of the LN-25™ lead clip when
welding power source is on.