| Tweet |
Custom Search
|
|
|
||
 TM 55-1925-273-10-1
0043 00
Table 11. Oil Content Monitor Sampling/Sensor Assembly (refer to figure 11)
Key
Control/Indicator
Function
1
OIL CONTENT Display
This display indicates the effluent oil content in parts
per million (ppm) relative to the selected alarm limit. Green display
units are below the alarm limit, and red display units are above the
alarm limit.
2
15 PPM Range Indicator
This illuminates to indicate that the 15 PPM alarm limit is selected.
3
70 PPM Range Indicator
This illuminates to indicate that the 70 PPM alarm limit is selected.
4
WARNING 3 Indicator
This illuminates to indicate dirt or foam in the sample, or no flow through
the OCM.
5
WARNING 2 Indicator
This illuminates to indicate dirt or bubbles in the sample.
6
WARNING 1 Indicator
This illuminates to indicate that the OCM fuse (2 amp) is blown.
7
POWER Indicator
This illuminates to indicate that the OCM is operating.
8
A1DS8 Indicator Light
This illuminates to indicate that the sample detection assembly is ON.
Emitting Diode (LED)
9
CHECK Alarm Switch
When this switch is in the DOWN position, the Ultrasonic Vibrator As-
A1S3
sembly (UVA) operates continuously. To perform OCM electronics
tests, the switch is placed in the DOWN position.
10
A1DS9 Indicator (LED)
This indicator flashes when the OCM is in alarm mode (effluent oil
content exceeds alarm limit).
11
ALARM LIMIT Selector
This switch permits the operator to select the 70 or 15 PPM alarm
Switch A1S2
limits, or to enable the remote alarm limit selector switch. In the 70
PPM position, the OCM will activate alarms and energize the diverter
valve when the oil content exceeds 70 ppm (+/- 30 ppm). In the 15
PPM position, the OCM will activate alarms and energize the diverter
valve when the oil content exceeds 15 ppm (+/- 5 ppm). In the RE
MOTE position, the PUSH TO CHANGE ALARM LIMIT (PPM)
pushbutton switch on the remote indicator assembly is engaged, al-
lowing the operator to select the alarm limit from this remote location.
12
OPERATION SELECTOR
This switch permits the operator to select the mode of operation.
Switch A1S1
With the switch in the OFF position, none of the system indicators or
displays will energize, and the diverter solenoid valve will remain in the
recirculate (de-energized) position. With the switch in the AUTO
position, the OCM will be energized whenever there is 5 to 25 PSI (0.3
to 1.7 bar) at the sample inlet. With the switch in the TEST position,
the OCM is energized regardless of the sample pressure or flow. The
TEST position is only to be used for troubleshooting and system
verification, as operation of the OCM without adequate pressure or flow
can damage the unit.
13
Elapsed Time Indicator (ETI)
The ETI keeps track of the hours that the OCM has been in use.
Maintenance is performed on the OCM at 500-hour intervals.
0043 00-17
|
||
|
||
