Bently Nevada 3300/46, Operation Manual

Page: 57 / 86

Ramp Differential Expansion Monitor Maintenance
11 2 I Test OK Limits
.m.....
cm
ORO
D'7',4EP Y
47-I •
Figure 9
iogi TOR
84414-01
CAUTION
Tests will exceed alarm setpoint
levels causing alarms t o activate.
This could result in relay contact to
change state. See Danger Bypass
section 10.
MULT M E T EP
^ M I T I
1. Disconnect COM and IN wiring from the channel A
terminals on the Signal Input Relay Module
2. Connect the multimeter and the power supply.
3. Adjust the power supply voltage for -9 Vdc.
4. Verify that the Channel A OK LED is on.
5. Increase the power supply voltage (more negative)
until the OK LED goes off (upper limit). Verify that the
upper OK limit is within the upper OK voltage range
(reference Table 8).
WARNING
High Voltage present
Could cause shock, burns
or death.
Do Not touch exposed
wires or terminals.
0
.E,P.NS:ON
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