Lincoln Electric LN-8 SVM132-A Service Manual page 69

F-19
Terminals
7-1
7-4
8-2
8-5
9-3
9-6
7. Measure the resistance across the
contacts. A resistance of less than
one ohm indicates that the con-
tacts are closed. An infinite resis-
tance indicates that the contacts
are open. Energize the 24VDC
power supply and measure the
resistance again. Compare to the
conditions given in Table F.2. If the
readings do not match the table,
the relay is faulty and should be
replaced.
TROUBLESHOOTING AND REPAIR
1CR RELAY TEST
TABLE F.2 – RELAY TEST TERMINAL CONNECTIONS
Terminals
Energized
(continued)
A&B
Open
Closed
Open
Closed
Open
Closed
8. Repeat the above procedure for all
of the contacts.
9. Re-install relay into the relay
board.
10. Install the screws that secure the
left side cover assembly.
LN-8
F-19
Terminals
A&B
De-energized
Closed
Open
Closed
Open
Closed
Open