Lincoln Electric IDEALARC SP-255 Service Manual page 37

C-2
1 Transfer switch in FEEDER position:
a. Disables spool gun trigger, wire feed and gas
output.
b. Closing feeder gun trigger starts feeder gun
welding and makes both electrodes electrically
"HOT".
2. Transfer switch in SPOOL position:
a. Disables feeder gun wire feed and gas output.
However, closing feeder gun trigger will make
both electrodes electrically "HOT" and activate
spool gun gas output.
b. Closing spool gun trigger starts spool gun weld-
ing and makes both electrodes electrically
"HOT".
3. Operation with SP-255:
a. Turn the input power ON. With the transfer
switch in SPOOL gun position, the display will
flash the messages:
SPOOL GUN HAS
BEEN CONNECTED
b. Pressing the Manual key will change the dis-
play to the spool screen.
SPOOL: WFS VOLTS
MANUAL
50%
Percentage of Wire Feed Speed
c. Pressing the up or down arrow keys under volts
on the display will increase or decrease your
welding voltage.
The 1-99% on the display represents a percent-
age of wire feed speed. This is the set speed
for the K469 spool gun and the maximum set
speed for the K487 spool gun (with the remote
control in gun handle at maximum). The remote
control turned to minimum will give you approx-
imately 50% of the maximum set WFS.
Left arrow keys -- do not function.
Center arrow keys -- Increase (up arrow) or de-
crease (down arrow) percent of wire feed
speed.
Right arrow keys -- Increase (up arrow) or de-
ACCESSORIES
PRESS MANUAL TO
ENTER SETTINGS
Arc
18.0
Voltage
IDEALARC
®
crease (down arrow) arc voltage.
d. Procedure settings may be stored in memory
for later recall. (See Memory Keys in Opera-
tion Section.)
4. The following procedure settings can be used as
initial settings for making test welds to determine
final settings:
Wire Diameter
In. (mm) WFS Setting
.030 (0.8) 42%
.035 *(0.9) 39%
3/64 (1.2) 32%
SPOT SPOT: ON
SET
DISPLAY
Selected On Time
SPOT KEY
Anytime the Spot weld timer is on and the display is in
Spool Mode, the word SPOT will appear in the bottom
left corner of the display.
TYPICAL SPOT KEY PRESS SEQUENCE
Spool screen is displayed prior to pressing Spot key.
Spot key is pressed, Spot On timer is activated and the
display changes to Spot screen. Spot On timer can now
be adjusted using the center arrow keys. Once the
timer has been set, pressing the Spot key again returns
the display to the original Spool screen with the Spot
timer status indicated in the bottom left corner.
Press
SPOOL: WFS VOLTS
SPOT
50% 18.0 SET
DISPLAY
Press
SPOT
SET
DISPLAY
SP-255
C-2
Arc Voltage
Setting
15V
16V
21V
Spot Weld Timer On
2.50s
Set Timer
SPOT: ON
2.50s
SPOOL: WFS VOLTS
18.0
SPOT 50%