Specifications

Halogen Gas Monitor – MultiZone Remote Display
Instruction 3015-5157 39
• REZERO VOLT TOL – The detector output voltage is out of tolerance. Check the Diagnostic Screen
as in item 4 and contact the factory for assistance.
• TRIGGER FAULT – No trigger from IR source pulser. Contact factory with all information from the
DIAGNOSTIC SCREEN for farther instructions.
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. Check 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 HGM Setup Screen #2 – Number Zones Installed field, or in RDM
Setup Screen #1 – Number of HGMS on Network field. Check that the number of zones installed for each
HGM unit and the number of HGM units on the network are properly programmed. Check to ensure that
the manifold solenoid cable connector in each HGM 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 deletes all program parameters, alarms, faults, trends and log files.
Resetting the HGM-MZ
–
1. Press and hold down the Factory Default switch inside the HGM-MZ (see page___)
2. Cycle AC power OFF, then ON
3. After the unit emits five beeps, release the switch.
4. Reprogram the HGM-MZ as described in the HGM-MZ – Setup Programming section of the HGM-
MZ Instruction Manual (P/N 3015-5074).
Resetting the HGM-RD
– Occasionally it will be necessary to rest the HGM-RD to its factory default
settings.
1. Press and hold down the Factory Default switch inside the HGM-MZ (see page___)
2. Cycle AC power OFF, then ON;
3. After the unit emits five beeps, release the switch.