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F-53
TROUBLESHOOTING & REPAIR
F-53
TEST PROCEDURE
1. Remove input power to the NA-5
2. Using the 5/16" nutdriver open the
control box PC board access door.
3. Locate the voltage PC board.
Jumper together the "BYPASS" and
“Common” pins on the NA-5 voltage
PC board. See Figure F.6 (On older
voltage boards these pins may be
labeled "B"). This should disable the
shut down circuit.
4. Connect to a Lincoln Electric CV
power source per connection dia-
gram. See the
Installation section
of this manual.
OUT OF VOLTAGE RANGE SHUT DOWN TEST (Continued)
NA-5
FIGURE F.6 VOLTAGE BOARD AND PIN LOCATIONS
NA-5
VOLTAGE
G1556-[ ]
BYPASS
COM
AUTO
JUMPER
TOGETHER
1/8 AMP FUSE
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