Lincoln Electric LN -15 WIRE FEEDER IM823-A - Manual (Page 12)

A-3 INSTALLATION
LN™-15 ACROSS THE ARC MODEL & (CE)
A-3
WELD CABLE CONNECTIONS
ELECTRIC SHOCK CAN KILL.
• Only a qualified electrician should
connect the electrode leads to the
LN™-15. Connections should be
made in accordance with all local
a n d n a t i o n a l e l e c t r i c a l c o d e s .
Failure to do so may result in bodi-
ly injury or death.
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The size of the electrode cable and work cable must
be sufficient for the maximum weld current and total
cable length used.
To avoid interference problems with other equipment
and to achieve the best possible operation, route all
cables directly to the work or wire feeder. Avoid
excessive lengths and do not coil excess cable. Be
sure the connection to the work makes tight metal-to-
metal electrical contact. (See Table A.1)
ELECTRODE CONNECTION
Route the electrode cable through the strain relief in
the rear of the case. Connect the electrode cable to
the LN™-15 input stud using the mounting hardware
provided. Secure the cable by tightening the strain
relief.
All domestic models are supplied with pigtail for cus-
tomers that prefer to make a taped and bolted con-
nection externally. CE models have a male twist con-
nector for the electrode connection.
WORK CONNECTION
Connect a work lead of sufficient size between the
proper output stud on the power source and the work.
Be sure the connection to the work makes tight metal
to metal electrical contact. Poor work lead connec-
tions can result in poor welding performance.
POWER SOURCE CONNECTION
The LN™-15 can be used with any DC welding power
source. A constant voltage power source is recom-
mend; however, the LN™-15 can also be used with a
constant current power source as long as the open
circuit voltage is less than 110VDC.
To prevent possible damage to the LN™-15, do
not connect the LN™-15 to non-Lincoln TIG or
square wave power sources. TIG high frequency
should never be applied to the LN™-15.
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WARNING
CAUTION
Weld Current Total Cable Length
60% Duty (electrode cable + work cable)
Cycle 50 - 100' 100 - 150' 150 - 200' 200 - 250'
(15-30 m) (30 - 46m) (46 - 61m) (61m - 76m)
200 Amps 2 AWG 2 AWG 1 AWG 1/0
300 Amps 1 AWG 1 AWG 1/0 2/0
400 Amps 2/0 2/0 3/0 3/0
TABLE A.1
ENGINE DRIVE POWER SOURCE
CONNECTION
The LN™-15 has an internal contactor and the elec-
trode is not energized until the gun trigger is closed.
When the gun trigger is closed the wire will begin to
feed and the welding process is started.
1. Shut the welder off.
2. For electrode Positive polarity welding, connect the
electrode cable to the "+" terminal of the welder
and work cable to the "-" terminal of the welder. For
Electrode Negative welding, connect the electrode
cable to the "-" terminal of the welder and work
cable to the "+" terminal of the welder.
3. Attach the work clip lead from the front of the LN™-
15 to work using the spring clip at the end of the
lead. This is a control lead to supply current to the
wire feeder motor; it does not carry welding current.
4. Set the MODE switch on the engine drive to CV-
WIRE.
5. Set the WELD TERMINALS switch to WELD TER-
MINALS ON.
6. Set the WIRE FEEDER VOLTMETER switch to
either "+" or "-" as required by the electrode polarity
being used.
7. Set the ARC CONTROL knob to "0" initially and
adjust to suit.
8. S e t t h e I D L E s w i t c h t o t h e A U T O p o s i t i o n .
Important: Some older engine drives may require
the IDLE switch to be in the HIGH position for prop-
er LN™-15 operation.