Valley FABRICATOR 251 Service Manual - Service Manual
Manual is about: MIG WELDING MACHINE
of
104
August 22, 2008
7-11
SERVICE MANUAL
FABRICATOR 251
Knob
Locking Collar
Rotary Switch
(SW4 Fine)
Set Screw
Retainer
Art # A-08571
Figure 7-4: Rotary Switch SW3 and SW4 Removal
POSITI ON
L
M
H
X
X
X
X
X
X
1
2
6
5
4
3
8
9
7
11
10
12
SWITCH 2 COARSE
SWI TCH
POSITI ON
1
2
3
X
X
X
X
X
X
1
2
6
5
4
3
8
9
7
11
10
12
SWITCH 3 FI NE
5
6
4
X
X
7
X
8
X
X
X
X
X
X
X
X
X
X
X
X
X
13
14
18
17
16
15
20
21
19
23
22
24
X
X
X
X
X
X
X
X
X
X
Art # A-08570
Figure 7-5: SW3 & SW4 Continuity
VOLTAGE CONTROL SWITCH TEST
One at a time remove SW-3 and SW-4 from front panel, disconnect wires, reconnect to panel and check
continuity of switch per figure 7-5.