GE DigitalFlow GS868, Service Manual

Page: 22 / 74

Chapter 1. Calibration
12 DigitalFlow™ GS868 Service Manual
1.7 Testing the Alarm Relays (cont.)
Note:
The procedure for testing
Alarm Relay A
is identical to that for testing
Alarm Relays B and C
. However, make sure
that the ohmmeter is connected to the desired normally-open or normally-closed contact of the currently
selected relay. See Figure 4 on the previous page for the correct pin numbers on the option card terminal block.
4. Pressing
[F1] (CLOSE)
should yield an ohmmeter reading of about zero. Pressing
[F2] (OPEN)
should yield an infinite
ohmmeter reading.
5. Press
[F3]
to
EXIT
.
6. Repeat the above procedure until both the normally-open and normally-closed contacts for all three alarm relays
have been tested. Then go to
Procedure Options below.
Procedure Options
You have completed testing the alarm relays. Do one of the following:
•
To calibrate/test additional slots, press
[F4] (EXIT)
and proceed to the appropriate section.
•
To leave the Calibration Menu, press
[F4] (EXIT)
twice.