Service manual

MDS E-SCAN MONITOR INFORMATION
60
Condition for either
Refractometer (1) or (2)
Alarms
Activated
Liquor
Diversion
Additional
Notes
Loss of power to both refracs. 1,2,3,5,8 Will divert
Failure of both refracs which would
activate both alarms.
any
combination
Will divert
Refrac (1) and (2) indicates solids
below 58%.
Will divert
Loss of power to both refracs &
Monitor.
Will divert
7.5.1 Error Alarm Conditions
Alarm Condition
1 Refract Power Supply out of tolerance.
* +15 VDC power supply out of tolerance.
* -15 VDC power supply out of tolerance.
* +5 VDC power supply out of tolerance.
2 Sensing Head voltages out of tolerance.
* Measurement voltage out of tolerance.
* Temperature voltage out of tolerance.
* Lamp voltage out of tolerance.
3 Serial communications port failure.
4 Purge errors.
* Purge failure (prism not properly cleaned).
* Purge missed (solenoid not activated at purge time).
* Purge invalid (solenoid activated at non-purge time).
* Purge not active (no times set in purge cycle).
5 Isolation valve closed.
6 Monitor Power Supply out of tolerance.
* +15 VDC power supply out of tolerance.
* -15 VDC power supply out of tolerance.
7 Comparator error, difference in readings greater than tolerance.