Lincoln Na5 Service Manual

							INSTALLATIONA-14A-14
NA-5
FIGURE A.13 – CONNECTION OF NA-5 TO DC-1000 OR DC-1500.
 THE DIAGRAM SHOWS ELECTRODE CONNECTED POSITIVE.  TO CHANGE POLARITY, TU\
RN POWER OFF, REVERSE THE ELECTRODE AND WORK  LEADS AT THE
 POWER SOURCE, POSITION THE POSITIVE-NEGATIVE SWITCH ON THE POWER SOURCE\
 TO CORRESPOND TO THE POLARITY OF THE ELECTRODE CABLE CONNECTION. 
 REFER TO NA-5 OPERATING MANUAL FOR REQUIRED NA-5 CONTROL BOX POLARITY C\
ONNECTIONS.

P
POWER  SOURCE CONTROL
CABLE
BOLT TO CABLES FROM
NA-5 WIRE CONTACT
ASSEMBLYINPUT CABLE PLUG
N.A.	 WELDING CABLES MUST BE OF PROPER CAPACITY FOR THE CURRENT AND DUTY CYCLE\
 OF IMMEDIATE AND FUTURE APPLICATIONS.
N.B.	 EXTEND LEAD 21 USING #14 OR LARGER INSULATED WIRE PHYSICALLY SUITABLE FO\
R THE INSTALLATION.  AN S-16586-[ ]  REMOTE VOLTAGE-SENSING WORK LEAD
	 IS AVAILABLE FOR THIS PURPOSE.  CONNECT IT DIRECTLY TO THE WORK PIECE KE\
EPING IT SEPARATE FROM THE WELDING WORK CABLE CONNECTION TO 
	 WORK PIECE.   FOR CONVENIENCE, THIS EXTENDED #21 LEAD SHOULD BE TAPED AL\
ONG THE WELDING WORK CABLE.
N.C.	 TAPE UP BOLTED CONNECTION.
N.D.	 CONNECT THE NA-5 CONTROL CABLE GROUND LEAD TO THE FRAME TERMINAL MARKED \
          NEAR THE POWER SOURCE TERMINAL STRIP.  THE POWER SOURCE 
	 MUST BE PROPERLY GROUNDED.
N.E.	 IF USING AN OLDER AUTOMATIC CONTROL CABLE WITH LEADS 75, 76, 77; CONNECT\
 LEAD 75 TO #75 ON TERMINAL STRIP, CONNECT LEAD #76  TO #74 ON TERMINAL
\
	 STRIP, CONNECT LEAD #77 TO #73 ON TERMINAL STRIP.
N.F.	 CONNECT THE JUMPERS ON THE NA-5 VOLTAGE BOARD AS FOLLOWS: CONNECT RED JU\
MPER TO PIN S. CONNECT WHITE JUMPER TO PIN B.
N.G.	 SET THE DC-1000 OR DC-1500 CONTROLS AS FOLLOWS: SET THE CONTROL SWITCH T\
O OUTPUT CONTROL REMOTE.
	 FOR SUBMERGED ARC PROCESSES, SET THE MODE SWITCH TO C.V. SUBMERGED ARC\
.  FOR OPEN ARC PROCESSES, SET THE MODE 
	 SWITCH TO C.V. INNERSHIELD 
N.H.	 FOR PROPER OPERATION, THE ELECTRODE CABLE MUST BE SNUGGED UNDER THE CLAM\
P BAR ON THE LEFT SIDE OF THE NA-5 CONTROL BOX.
N.J.	 TERMINALS #73 AND #74 WERE NOT PRESENT ON DC-1500 MACHINES BELOW CODE 82\
94.  THESE EARLIER CODE MACHINES ARE NOT SUITABLE FOR
	 USE WITH THE NA-5.
N.K.	 ALTERNATIVE 500 AMP POSITIVE TERMINAL CONNECTION PROVIDED ON DC-1000 MOD\
ELS ABOVE CODE 9500 ONLY.
N.L.	 ALTERNATE SUBMERGED ARC MODE AVAILABLE FOR IMPROVED ARC STABILITY IN HIG\
H CURRENT,  LARGE PUDDLE, SLOW TRAVEL PROCEDURES BY MAKING
	 SPECIAL CONNECTIONS ON BOTH DC-1500 AND NA-5. 
	 ON DC-1500 CONTROL BOARD (G-1530-2 AND SUPERSEDING) REMOVE RED AND BLU\
E JUMPERS FROM FR PINS AND RECONNECT TO CORRESPONDING SR PINS. 
	 ON NA-5 VOLTAGE BOARD (G-1556-1 AND SUPERSEDING) WHITE JUMPER MUST BE \
CONNECTED TO PIN D. 
	 NA-5 PIN D CONNECTION MAY ALSO BE USED FOR SOME PROCEDURES ON DC-1500 \
WITHOUT CONTROL BOARD JUMPERS, DC-1500 WITH CONTROL BOARD 
	 JUMPERS ON FR PINS OR DC-1000.

CONNECT TO WORK
CLEVELAND, OHIO U.S.A. 
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							INSTALLATIONA-15A-15
NA-5
FIGURE A.14 – CONNECTION OF NA-5 TO DC-400 OR CV-400.
THE DIAGRAM SHOWS ELECTRODE CONNECTED POSITIVE.  TO CHANGE POLARITY, TUR\
N POWER OFF, REVERSE THE ELECTRODE AND WORK  LEADS AT THE
POWER SOURCE AND POSITION THE SWITCH ON POWER SOURCE (IF EQUIPPED), TO\
 PROPER POLARITY.  REFER TO NA-5 OPERATING MANUAL FOR REQUIRED
NA-5 CONTROL BOX POLARITY CONNECTIONS. ALSO REFER TO NOTE N.H.FOR ADDITIONAL INSTALLATION INSTRUCTIONS, SEE NA-5 OPERATING MANUAL. 
 



 
* DOES  NOT APPLY TO DC-400 BELOW CODE 9200 WITH POLARITY SWITCH.
N.A.	 WELDING CABLES MUST BE OF PROPER CAPACITY FOR THE CURRENT AND DUTY CYCLE\
 OF IMMEDIATE AND FUTURE APPLICATIONS.
N.B.	 EXTEND LEAD #21 USING #14 AWG OR LARGER INSULATED WIRE PHYSICALLY SUITAB\
LE FOR THE INSTALLATION.  AN S-16586- [LENGTH]  REMOTE
	 VOLTAGE-SENSING WORK LEAD IS AVAILABLE FOR THIS PURPOSE.  CONNECT IT DIR\
ECTLY TO THE WORK PIECE KEEPING IT ELECTRICALLY SEPARATE
	 FROM THE WELDING WORK LEAD CIRCUIT AND CONNECTION.  FOR CONVENIENCE, THI\
S EXTENDED #21 LEAD SHOULD BE TAPED TO THE WELDING
	 WORK LEAD.  (IF THE LENGTH OF WORK LEAD CIRCUIT IS SHORT, AND CONNECTIO\
NS CAN BE EXPECTED TO BE RELIABLE, THEN CONTROL CABLE 
	 LEAD #21 DOES NOT NEED TO BE EXTENDED AND CAN BE DIRECTLY CONNECTED TO T\
ERMINAL #21 ON THE TERMINAL STRIP.  NOTE THAT THIS IS 
	 NOT THE PREFERRED CONNECTION BECAUSE IT ADDS ERROR TO THE NA-5 VOLTMETER\
 READING.)
N.C.	 TAPE UP BOLTED CONNECTION.
N.D.	 CONNECT THE CONTROL CABLE GROUND LEAD TO THE FRAME TERMINAL MARKED      \
    NEAR THE POWER SOURCE TERMINAL STRIP.  THE POWER 
	 SOURCE GROUNDING TERMINAL (MARKED       AND LOCATED NEAR THE POWER SOUR\
CE INPUT POWER CONNECTIONS) MUST BE PROPERLY CONNECTED
	 TO ELECTRICAL GROUND PER THE POWER SOURCE OPERATING MANUAL. .
N.E.	 THE JUMPERS ON THE NA-5 VOLTAGE BOARD MUST BE CONNECTED AS FOLLOWS: CONN\
ECT RED JUMPER TO PIN S. CONNECT WHITE JUMPER TO PIN B.
	 WHEN USING NA-5 CONTROLS ABOVE CODE 8300 WITHOUT THE OPTIONAL DC-400 DIO\
DE KIT OR CV-400, CVI-500 DIODE OPTIONS:
	 THE NA-5 INCH DOWN BUTTON WILL NOT OPERATE UNLESS A JUMPER IS CONNECTED \
BETWEEN THE TWO TAB TERMINALS, LABELED AUTO, 
	 LOCATED ABOVE THE TRANSFORMER ON THE NA-5 VOLTAGE PC BOARD.  THIS JUMPER\
, HOWEVER, WILL DISABLE THE COLD STARTING/AUTO STOP
	 FEATURE OF THE NA-5, PERMITTING ONLY HOT STARTING TECHNIQUES TO BE USED.\

N.G.	 FOR PROPER NA-5 OPERATION, THE ELECTRODE CABLES MUST BE SNUGGED UNDER TH\
E CLAMP BAR ON THE LEFT SIDE OF THE NA-5 CONTROL BOX.
N.H.*	 IF LEAD #21 IS TO BE CONNECTED TO THE TERMINAL STRIP, CONNECT TO THE #21\
 TERMINAL THAT MATCHES WORK POLARITY.  THIS CONNECTION MUST
	 BE CHANGED WHENEVERTHE ELECTRODE POLARITY IS CHANGED.	 
POWER SOURCE
TO NA-5 INPUT CABLE PLUG

CONTROL
CABLE
BOLT TO CABLES FROM NA-5
 WIRE CONTACT ASSEMBLY
CONNECT TO WORK N.E.
N.D. AND N.H.
N.B. AND N.C.
N.H.
N.A.
NEGATIVE
POSITIVE
N.D.C
B
A
32
31 2
4
GND
21
CLEVELAND, OHIO U.S.A. 
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							NOTESA-16A-16
NA-5Return to Section TOCReturn to Section TOC Return to Section TOC Return to Section TOCReturn to Master TOCReturn to Master TOCReturn to Master TOC Return to Master TOC 
						

							TABLE OF CONTENTS
- OPERATING  INSTRUCTIONS SECTION - 
NA-5
Operating Instructions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
 Section B
Safety Precautions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
 . B-2
Operator’s Instructions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
Controls and Their Functions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3 Exposed Controls (With Lockable Cover Down) . . . . . . . . . . . . . B-3
Controls Under the Lockable Security Cover  . . . . . . . . . . . . . . . B-3 
Setup Instructions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
 . . B-4
Starting and Stopping Sequences  . . . . . . . . . . . . . . . . . . . . . . . . . . B-5 Means of Arc Striking  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5
Setting Travel Starting and Stopping  . . . . . . . . . . . . . . . . . . . . . . . . B-6 Starting Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6
Stopping Sequences  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6
Reconfiguring the Travel Sequences  . . . . . . . . . . . . . . . . . . . . . B-6
Voltage Control Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9
Automatic Shutdown  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
 B-10
Cold Start Circuitry  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
 . B-11 Security of Weld Procedure Settings  . . . . . . . . . . . . . . . . . . . . . . . . B-12
Section BSection B
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							OPERATOR’S
INSTRUCTIONS
Once the system is properly set up, the
operator can make production welds
without readjusting the controlsusing the
following simple instructions: 1. Be sure there is enough electrode in
the machine to complete the weld.
2. If submerged arc welding, fill flux hopper with new or freshly screened
flux. All reused flux must be screened
100% through an 8 mesh screen
[0.065 to 0.075 in. (1.6 to 1.9 mm)
opening]. Turn the switch on the
hopper to “On.”
3. Start the power source.
4. Turn the “Power Control” switch on the wire feeder control to “On.”
5. Position the welding head at the start of the weld. Be sure the travel carriage
or other travel mechanism is set to
move in the proper direction.
6. Set the travel switch to “Automatic Travel.” When set to “Hand Travel”,
the travel system operates without
welding.
7. For best starts, cut the electrode to a sharp point.
8. Press the “Inch Down” button to feed the electrode out of the nozzle.
a. For most applications, when hot starting, leave the electrode
1/4 in. (6.4 mm) or more away
from the work.
b. When cold starting some submerged arc welding, inch the
electrode down until it touches the
work and the flux valve opens.
9. Press the “Start” button.
10. While welding, turn the cross seam adjuster handwheel as needed to keep
the arc in the joint.
11. At the end of the weld, press the “Stop” button.
12. If needed, press the “Inch Up” button to get the electrode up and out of the
way. Remove the work and reload the
fixture.
NOTE
:  When the contact tip in the end of the
nozzle wears during repetitive welding, it
must be replaced. Check the contact tip for
wear if weld quality seems to be
deteriorating.
ELECTRIC SHOCK
can kill.
• Do not touch electrical- ly live parts or elec-
trode with skin or wet
clothing.
• Insulate yourself from work or ground.
• Always wear dry insu- lating gloves.
FUMES AND GASES
can be dangerous. • Keep your head out of fumes.
• Use ventilation or exhaust to remove
fumes from breathing
zone.
WELDING SPARKS
can cause fire or
explosion.
• Keep flammable mater- ial away.
• Do not weld on con- tainers that have held
combustibles.
ARC RAYS
can burn. • Wear eye, ear, and body protection.
Observe additional Safety Guidelines
detailed in the beginning of this manual.
B-2OPERATING INSTRUCTIONSB-2
NA-5 
SAFETY PRECAUTIONS
WARNING
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							OPERATING INSTRUCTIONSB-3B-3
NA-5
CONTROLS AND
THEIR FUNCTIONS
The operator controls for the NA-5 are
illustrated in Figure B.1. Refer to the figure
and the following explanations of the
controls.
EXPOSED CONTROLS (WITH
LOCKABLE COVER DOWN)
1.CIRCUIT BREAKER. Protects the
circuit from severe wire feed motor
overloads and short circuits. Press to
reset. 
2. CONTROL POWER. Turns input
control power “On” and “Off.” Also
used as an emergency “Off” in case
of malfunction.
3. ELECTRODE “HOT” LIGHT.
Comes on when the “Start button” is
pressed and the electrode circuit
becomes electrically hot.             4.
INCH UP AND INCH DOWN. Press to
inch electrode up or down. 
5. MODE SELECTOR SWITCH AND
LIGHTS. Used to preset the voltage
and wire feed speed for the various
modes of operation (Strike, Start,
Weld, and Crater).  
6. SET-ACTUAL BUTTON . When
pressed, will display the actual wire
speed and voltage in the wire speed
and volts meters.  When the button is
not pressed, the set wire speed and
voltage is displayed.
7. START. Begins welding cycle.
8. STOP. Initiates the stopping cycle at
the end of the weld.
9. TRAVEL. Turn to “Off” for no travel,
“Hand Travel” for travel without
welding, and “Automatic Welding” for
welding operations. 
10. VOLTS METER. Displays the set or
actual voltage for each mode (Strike,
Start, Weld, Crater).
11. WIRE SPEED METER. Displays the
set or actual wire speed for each
mode (Strike, Start, Weld, Crater).
CONTROLS UNDER THE
LOCKABLE SECURITY COVER
12.  ARC STRIKING CONTROLS .  Sets
the wire speed until the welding
current begins to flow and controls
the power source voltage during arc
striking.
13.  BURNBACK AND ELECTRODE
BACKUP TIME .  Controls the length
of burnback delay time after the stop
circuit is energized.
14.  WELD CONTROLS .  Controls the
voltage and wire speed during the
welding mode.
15.  CRATER CONTROLS (OPTIONAL) .
Sets the ending current and voltage
for an adjustable period of time.
16.  START CONTROLS (OPTIONAL).
Sets the starting current and voltage
for an adjustable period of time.
17.  WELD TIME (OPTIONAL).  Controls
the time of the weld mode.
FIGURE B.1 – NA-5 CONTROLS.
9 2
3
12 11

17
16 10
15
13 7
6
8
4
14
5
1
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							OPERATING INSTRUCTIONSB-4B-4
NA-5
SETUP INSTRUCTIONS
Use the following steps to set up the NA-5
welding system prior to welding:1. If using a multi-process power source (SAM, DC-400, DC-600, DC-1000,
OR DC-1500 type), make con-
nections and settings per the power
source connection diagram (Figures
A.8 to A.14) for the process being
used.
AUTO TAB
When using the NA-5 with the DC-
400 or CV-400 power source, the
auto tab jumper on the NA-5 voltage
PC board must be connected in order
for the inch down circuit to function.
When the auto tab jumper is
connected, the cold starting feature
of the NA-5 is disabled and only the
hot starting technique can be used. If
the cold start technique is to be used,
the optional Diode must be installed
on the DC-400 or CV-400.
2. Set the power source and NA-5 circuit polarity per information on
Electrode Polarityin Section A,
Installation.
3. Depending on the procedures and applications, decide:
a. The means of arc striking and whether to start the travel with
the “Start” button or the arc.
b. Whether the initial bead size or penetration requires use of the
optional “Start Controls.”
See the 
Starting and Stopping
Sequences
section.
4. Depending upon the procedures and applications:
a. Select the arc and travel stopping sequence. See the 
Starting and
Stopping Sequences 
section.
b. Decide if the control of the ending bead size or crater fill requires
the use of optional “Crater
Controls”. See the 
Starting and
Stopping Sequences
section. 5. Set the head position relative to the
work as required for the fixture,
application, and procedures. See
IM305 Sec. T3.2.3.
6. Rotate the wire straightener, if used, until the top of the straightener faces
the wire reel. This is required for
smooth feeding of the electrode into
the straightener.
7. Refer to the instructions for the wire contact assembly being used. See
IM305 Sec. T2.2.6, T2.2.7, T2.5.3, or
T2.5.4.
8. The mount for standard 50 and 60 lb (22.7 and 27.2 kg) electrode coils
includes a two-position brake
assembly. Generally the brake should
be at the inner position (nearest to
the wire reel shaft) for wire feed
speeds below 400 in./min (10 m/min).
It should be at the outer position for
faster wire speeds. To adjust the
brake position, remove the wire reel.
Pull the cotter pin that holds the
brake shoe to the arm, move the
shoe, and replace the cotter pin. Do
not bend the cotter pin — it is held in
place by a friction fit. 
9. Load the wire reel per IM305 Sec. T3.2.2 or install the Speed-Feed
drum or reel per Sec. T2.5.7-A or -B.
10. Straighten the first 6 in. (152.4 mm) of electrode and push it through the
wire straightener to the drive rolls. To
use the cored wire straightener,
remove the knurled nut at the top and
feed the wire through the nut, down
through the straightener, and into the
drive rolls. Screw the nut back onto
the straightener. Feed the wire
through the nozzle tip and adjust
the straightener for optimum
straightness. With wire contact
assemblies, except the K231, adjust
until the electrode is straight as it
comes out of the nozzle.  Do not
completely straighten the wire when
using the K231 contact nozzle
because the nozzle relies on the
small curvature of the electode for
proper electrical contact within the
contact tip.
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							OPERATING INSTRUCTIONSB-5B-5
NA-5 
11. Set the travel speed as specified bythe procedures.  With the wire feeder
travel switch set to “Hand Travel”, the
travel runs without welding, permitting
accurate measurement of travel
speed.  When using a Lincoln travel
carriage, adjust the speed with the
rheostat and the direction with the
toggle switch on the carriage control
panel.
12. Connect the work lead to the work or a suitable piece of scrap.  Clip the
end of the electrode to a sharp point.
13. Preset the “Start” (if used), “Weld”, and “Crater” (if used) controls to the
wire speed and voltage specified in
the procedure. 
14. Make several test welds, readjusting the controls in the following order:
a. Set the “Arc Striking”, “Inch Wire Speed”, and “Volts” controls for
optimum arc striking.  The
optimum strike control settings for
most processes will be typically 4
to 5 volts higher than the weld
mode voltage setting and 40% to
50% of the weld mode wire feed
speed setting (possibly lower if
cold starting is used).
b. If striking is still not satisfactory, refer to the section on
Setting
Travel Starting and Stopping 
or
IM305 Sec. T3.5.2 for information
on wire feed motor acceleration.
c. If installed, adjust the “Start Controls” to set the welding
procedures for the time set on the
timer to provide the bead size,
penetration, or other factor as
needed for the application.
d. If installed, adjust the “Crater Controls”  to set the welding
procedures for the set time after
the “Stop” button is pressed to
provide the bead size or fill the
crater as needed for the
application.
e. Set   the  “Burnback  Time” to provide the stopping char-
acteristics needed.
STARTING AND STOPPING
SEQUENCES 
MEANS OF ARC STRIKING
The NA-5 Codes utilize “hot start” arc
striking which operates as follows :
1. With the electrode not touching the work, press the “Start” button.
2. The electrically “hot” electrode inches down as set by the “Inch Wire
Speed” control.
3. When the electrode makes contact with the work, the arc strikes and the
circuit automatically switches from
“Strike” settings to “Weld” (or  “Start”,
if used) settings.
NA-5 models above Code 8300 offer both
“hot start” arc striking, as described
above, or “Cold Start” arc striking which
operates as follows :
1. Press the “Inch Down” button until the tip of the electrode touches the work,
automatically stops, and the flux (if
used) is automatically dispensed.
NOTE
: If inch speed is set too high, the
electrode may stop with too much force on
its tip, resulting in possible poor starting. 
2. The arc establishes when the “Start” button is pressed, and the circuit
automatically switches to “Weld” (or
“Start”, is used) settings.  Should the
arc not start immediately, the wire will
retract slightly until the arc is
established and then feed down in the
normal manner.
Use either the standard “on-the-fly” travel
starting or rewire the controls for “standstill”
travel starting as described in the 
Setting
Travel Starting and Stopping
section.
Optional “Start Controls”
Recommended for applications where
penetration, bead size, and other
characteristics must be carefully controlled
at the start.
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							OPERATING INSTRUCTIONSB-6B-6
NA-5
The starting sequence is as described above
except that when the arc strikes, the
machine welds at the wire speed and
voltage set by the “Start Controls” panel until
the time set on the thumbwheel switch
elapses.  The circuit then automatically
switches to the “Welding Controls” wire
speed and voltage.  Actual settings depend
on application requirements.
Available options for applications with
particularly difficult starting.1. K238 High Frequency Generator - See IM305 Sec. T2.5.8.
SETTING TRAVEL
STARTING AND STOPPING
Standard machines can be connected for a
variety of starting and stopping sequences.
STARTING SEQUENCES
“On-the-Fly” Travel Starting
When shipped, all models are connected for
“On-the-Fly” travel starting.  The starting
sequence is as follows:
1. With the electrode NOT touching the work, press the “Start” button.  This
starts both the wire feed and travel
motors.
2. When the electrically “hot” electrode touches the work to start the arc,
there is relative motion between the
end of the electrode and the work.
This “scratching” type contact helps
assure consistent arc striking.
This sequence is recommended for most
welding applications including: 1. Roundabouts and any other weld which ends at  its starting point.  A
K337 Weld Timer Module to control
the welding cycle duration can be
installed.
2. Welds started on a run-out tab. 3. Any application for improved arc
striking.
“Standstill” Travel Starting
All models can be reconnected so the travel
remains at a standstill until the arc starts.
“Standstill” travel starting is used when the
electrode
mustbe started at a precise
location.
For consistent arc striking with “Standstill”
travel starting, always clip the end of the
electrode to a sharp point before starting.
STOPPING SEQUENCES
As shipped, the travel stops when the “Stop”
button is pressed, producing a small crater
area.
When the end of the weld overlaps the
beginning, changing the stopping sequence
to stop the travel later spreads the crater
over a longer area.
RECONFIGURING THE TRAVEL
SEQUENCES
ELECTRIC SHOCK
can kill.
• Turn off input power to the welding power source
using the disconnect
switch before working on
this equipment.
To change the travel sequence, turn off all
input power to the NA-5  control box.  Open
the control box.  The logic board is mounted
on the back of the box in the upper right
hand corner.  To change the travel circuit for
the various modes of starting and stopping,
follow the information in the wiring diagram
for the NA-5 being used.  Table B.1 also
shows information on reconfiguring the
travel sequences. 
WARNING
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							OPERATING INSTRUCTIONSB-7B-7
NA-5
Travel Starts Travel Stops Older ModelsNewer Models*
With “Start” With “Stop” Lead #691 to Pin 6
Button Button Lead #692 to Pin 5
With Arc Striking With Arc Stopping Lead #691 to Pin 6 Lead #692 to Pin 7
With Arc Striking With Stop Button Lead #691 to Pin 5 Lead #692 to Pin 7
With “Start” With End Crater Lead #691 to Pin 6
Button Fill Time (With Lead #692 to Pin 9
optional procedure
module installed in
crater receptacle
1)
With “Start” After Burnback Lead #691 to Pin 6
Button Time (with  Lead #692 to Pin 8 optional procedure
module installed
in crater 
receptacle
1)
1234 1234
Switch #1 Switch #2
1234 1234
Switch #1 Switch #2
1234 1234
Switch #1 Switch #2
1234 1234
Switch #1 Switch #2
TABLE B.1 – TRAVEL SEQUENCE LEAD AND SWITCH POSITIONS.
1234 1234
Switch #1 Switch #2
*NOTE:
Indicates switch in up   position
Indicates switch in down   position
Indicates switch position does not matter
1 If the optional procedure module is installed in the crater receptacle,
DIP switch position 1 on  switch #2 should be in the UP position as
shown.  Additionally, remove 583C to 584C jumper plug from the pro
cedure board.  If the procedure module is not installed, the switch 
should be in the down position and the 583C to 584C jumper plug 
should be reinstalled on the procedure board. 
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