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TROUBLESHOOTING AND REPAIR
F-14F-14
LN-25™
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GAS SOLENOID VALVE AND CONTROL PC BOARD TEST
(FOR CODES ABOVE 10500 ONLY) (continued)
FIGURE F.5 – CONTROL BOX COVER REMOVAL.
DESIRED
IN/MIN
ARC
VOLTS
USED
CC
WIRE
SPEED
SETTING
(HI
of
LOW
RANGE)
M-15242
PRESETTING
CC
MODE
WIRE
SPEED:
Select
horisontal
line
for
DESIRED
IN/MIN
Select
diagonal
line
for
ARC
VOLTS
USED
Determine
vertical
line
where
lines
cross
This
vertical
line
is
CC
WIRE
SPEED
SETTING
on
front
dial
Set
switch
to
CC
and
set
proper
ARC
VOLTS
while
weldi
(See
example
for
375
IN/MIN
at
29
VOLTS)
WIRE
SPEED
CALIBRATED
IN
IN/MIN
WIRE
SPEED
CALIBRATED
PER
GRAPH
VARIABLE
WIRE
SPEED
FOR
CC
POWER
SOURCE
CONSTANT
WIRE
SPEED
FOR
CV
POWER
SOURCE
WIRE
FEED
MORE
1
2
3
4
5
700
650
600
550
500
450
400
350
300
250
200
150
100
50
50
100150
200
250
300
350
400
450
500
550
600
650
700
35
31
29
27
25
23
21
19
17
15
COLD
INCH
T13086-99
CONTROL BOX
COVER
SCREW
WIRE REEL
RETAINING
COLLAR
SCREW
SCREWS
TEST PROCEDURE
GAS SOLENOID VALVE
1. Open the case door. Remove the wire reel by
removing the retaining collar. See Figure F.5.
2. Remove the screws holding the control box
cover in place and remove the control box
cover. See Figure F.5