Essential Health & Safety Requirements | 33
TROUBLESHOOTING AND MAINTENANCE
Any troubleshooting or maintenance to this analyzer that requires access to the inte-
rior of the components must be performed only by qualified service personnel . There
are no operator-level serviceable parts, expendables, or maintenance needs inside this
analyzer.
System Alarms
The system alarm contacts are activated when there is a condition that makes the analyz-
er output questionable. The error messages in Figure 10 will be displayed on the bottom
line of the analyzer display when a system alarm condition exists.
It is common for some of these system alarms to activate momentarily during normal
operation, especially during equilibration periods between measurement cycles. If the
system alarm persists, there may be a problem with the measuring cell, the moisture
generator, or the thermal controller.
CELL TEMP ALERT Moisture Cell temperature control is suspect
(signal sent from field unit).
LOW CELL FREQUENCY Activates when measured cell frequency is < 500 Hz.
HIGH CELL FREQUENCY Activates when measured cell frequency is > 3500 Hz.
NEGATIVE DELTA FREQUENCY Activates when delta frequency is < –1 Hz.
GEN TEMP ALERT Moisture Generator temperature control is suspect
(signal sent from field unit).
CAL ERROR Activates when the new calculated span value (Moist_Span)
exceeds the limits Max_Cal_Err or Max_Span. Refer to
Chapter 4, "Alarm Button" for more information. Deactivates
after successful calibration.
DISPLAY OVER-RANGED A displayed value exceeds the allotted display area.
MEMORY IS CORRUPTED The RAM or RAM battery has failed causing factory default
parameters to be loaded into memory.
Figure 10.
System Alarm error messages.
NOTE
!
WARNING
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