Valley FABRICATOR 251 Service Manual - Fabricator 251
Manual is about: MIG WELDING MACHINE
of
104
7-14
August 22, 2008
FABRICATOR 251
SERVICE MANUAL
7.17 Main Transformer Test
Disconnect the secondary of the Main Transformer T2 from the rectifier bridge and measure output voltage between
the two transformer output connections as follows:
COARSE VOLTAGE SELECTION
FINE VOLTAGE SELECTOR
VOLTAGE AC (approx.)
SWITCH SETTING
SWITCH SETTING
L
1
11.8
L
2
12.2
L
3
12.5
L
4
12.9
L
5
13.2
L
6
13.8
L
7
14.0
L
8
14.6
M
1
15.3
M
2
16.0
M
3
16.5
M
4
17.3
M
5
17.9
M
6
18.9
M
7
19.5
M
8
20.6
H
1
22.1
H
2
23.6
H
3
24.7
H
4
26.4
H
5
28.0
H
6
30.2
H
7
31.8
H
8
34.8