Lincoln Electric NA-5N Service Manual page 112

F-59
VOLTMETER ACCURACY TEST
CR3 RELAY
4. Remove the jumper wire from leads
#2 and #4.
5. Remove the test voltmeter and,
while welding, compare the SET
volts and ACTUAL volts meter read-
ings. Depending upon the arc volt-
age characteristics of the process
being welded, the ACTUAL reading
may vary somewhat about an aver-
age value. The average ACTUAL
reading should match the SET read-
ing within +/- 0.5 VDC. If not, refer
to the Meter Circuit Accuracy Test .
6. If no further tests are required,
remove all test equipment and close
and secure the access door.
TROUBLESHOOTING & REPAIR
FIGURE F.8 CR3 RELAY
NA-5
(Continued)
F-59