Troubleshooting And Maintenance; System Alarms - Ametek 5000 Manual

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
WARNING
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.
CELL TEMP ALERT
LOW CELL FREQUENCY
HIGH CELL FREQUENCY
NEGATIVE DELTA FREQUENCY
GEN TEMP ALERT
CAL ERROR
DISPLAY OVER-RANGED
MEMORY IS CORRUPTED
Figure 10.
System Alarm error messages.
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
NOTE
generator, or the thermal controller.
Moisture Cell temperature control is suspect
(signal sent from field unit).
Activates when measured cell frequency is < 500 Hz.
Activates when measured cell frequency is > 3500 Hz.
Activates when delta frequency is < –1 Hz.
Moisture Generator temperature control is suspect
(signal sent from field unit).
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.
A displayed value exceeds the allotted display area.
The RAM or RAM battery has failed causing factory default
parameters to be loaded into memory.
Essential Health & Safety Requirements
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