Specifications
Ammonia Gas Monitor – Multi Zone
36
Instruction 3015-5113
Non Critical Faults
BOX TEMP FAULT – Enclosure’s internal temperature is outside normal range (or IR sensor has
failed). Check the installation to verify that the monitor is not being subjected to extreme temperatures.
Verify that the ventilation holes are not obstructed. Refer to the Diagnostic Screen for the ZERO
temperature, BNCH temperature and BOX temperature. Call the factory with this information for further
instructions.
BENCH TEMP FAULT – Optical bench is outside of normal operating range (or sensor has failed).
Check the installation to verify that the monitor is not being subjected to extreme temperatures. Check
the Diagnostic Screen for the ZERO temperature, BNCH temperature and BOX temperature. Call the
factory with this information for further instructions.
PRESSURE SENSOR – Manifold pressure is outside normal operating range (or sensor has failed).
Check the Diagnostic Screen record ALL data. Call the factory with this information for further
instructions.
LOOP FAULT – This would only be displayed if the dual 4-20 mAdc option was installed and one or both
current loops are open. Check the wiring to load/monitoring circuit on both 4-20 mA loops.
CONFIG FAULT – There is an error in AGM Setup Screen #2 – Number Zones Installed field, or in AGM-
RD Setup Screen #1 – Number of AGMs on Network field. Check that the number of zones installed for
each AGM unit and the number of AGM units on the network are properly programmed. Check to ensure
that the manifold solenoid cable connector in each AGM unit is securely fastened to its terminal connector.
Check for an illegal parameter. If necessary, reset to the factory default settings.
Reset to Factory Default Settings
IMPORTANT: Performing this function wipes out all program parameters, alarms, faults, trends and
log files.
Resetting the AGM-MZ
–
1. Press and hold down the UP and DOWN arrow keys on the HGM-MZ (page 15);
2. Cycle AC power OFF then ON;
3. Hold the keys until the second beep is heard
4. The screen will indicate "This unit has been reset to factory default conditions"
5. Release the keys.
6. Reprogram the AGM-MZ as described in the
AGM-MZ – Setup Programming
section on page 25.
Clearing System Faults
If the fault condition is associated with an AGM-MZ, the monitor will return to normal operation soon after the
problem is corrected. At that time the YELLOW LED will turn off and any external alarms connected to the
monitor’s alarm relays will also turn off. The AGM-RD will return to normal operation the next time it polls the
affected AGM-MZ monitor.
Once the system malfunction has been corrected it may take some time for the fault condition to clear
completely. If the fault is associated with a specific zone, the AGM-MZ must first cycle back to the affected
zone before it returns to normal operation. At that time the YELLOW LED will turn off and any external alarms
connected to the monitor’s alarm relays will also turn off. The AGM-RD will return to normal operation the next
time it polls the affected monitor.