Bacharach HGM-MZ User manual
PRODUCT BULLETIN
Bacharach | THE MEASURABLE DIFFERENCE | New Kensington, PA, USA | Dun Laoghaire, Ireland | Toronto, Canada | mybacharach.com
Acknowledging Alarms on Multi-Zone Monitors
Bacharach Multi-Zone monitors handle alarms in two ways, Automatic and
Manual
1) If you are using a third-party EMS, choose "Automatic". This will allow the unit
to reset once alarm conditions clear.
2) If you are utilizing the lights and relays on the unit to alert you of leaks, choose
"Manual". Manual is the default setting on your monitor. This setting will force a
manual acknowledgement on the monitor before the unit resets. This is
important if, for instance, the leak only shows during an unattended time, or at
night. You would never know you had a leak unless you made a habit of checking the alarm log
history regularly.
Changing the Alarm Acknowledge Mode
This function programs the relays in the unit for latching or non-latching operation.
AUTO (Non-latching) - Alarm relay will automatically de-energize when the gas level drops
below its alarm point.
MANUAL (Latching) - Alarm relay remains energized, and will not release until the alarm
condition has been manually acknowledged.
Alarm Acknowledge Mode selection
This function programs the relays in the unit for latching or non-latching operation.
1. Highlight the “ALM ACK MODE” box and press the ENTER key to adjust the setting.
Use the UP/DOWN cursor keys to toggle between settings.
2. Press ENTER to accept the new entry or ESC to revert to the previous setting.
PRODUCT BULLETIN
Bacharach | THE MEASURABLE DIFFERENCE | New Kensington, PA, USA | Dun Laoghaire, Ireland | Toronto, Canada | mybacharach.com
Acknowledging Alarms (Monitor in Manual Acknowledge Mode)
Responding to Alarms (Manual Latching Mode)
An operator can respond to the alarms by accessing the Alarm Summary Screen. Navigate to
this screen by selecting ALARM on the first (Data Display) screen. To further investigate an
alarm, press the ENTER key to go to the Alarm Detail Screen.
The Alarm Summary Screen displays a list of all alarm conditions pending across the network.
The screen is divided into 8 boxes, and each box represents a single alarm. If more than eight
alarms are pending, the MORE option will be displayed at the bottom of the screen to permit
access to that additional information.
Each box displays the zone number, zone name, and the current PPM reading. A flashing box
indicates an alarm that has not been acknowledged. A static box represents an alarm that has
been acknowledged, but has not yet been cleared from the system. Select the zone to be
acknowledged and press ENTER. This will take you to the alarm detail screen for that zone.
PRODUCT BULLETIN
Bacharach | THE MEASURABLE DIFFERENCE | New Kensington, PA, USA | Dun Laoghaire, Ireland | Toronto, Canada | mybacharach.com
The Alarm Detail Screen displays comprehensive information about the nature of the alarm,
including:
• Complete location information
• Gas type and current concentration (CONC NOW)
• Peak concentration and peak time
• Type of alarm, alarm time, and date.
This screen provides the following navigation options at the bottom of the display:
ACK -Use the left arrow key to acknowledge the alarm as described in the next section
Acknowledge the alarm by pressing the left arrow key twice.
Acknowledging Alarms
Each pending alarm requires acknowledgment before the system returns to normal operation.
To acknowledge an alarm, navigate to the Alarm Detail Screen and select the ACK option as
previously described. You will be returned to the Alarm Summary Screen,and the box
associated with that alarm will no longer be blinking, indicating that the alarm has been
acknowledged. Repeat this procedure to acknowledge any remaining alarms.
Visual conformation alarm has been acknowledged box now shows “ACKD”
PRODUCT BULLETIN
Bacharach | THE MEASURABLE DIFFERENCE | New Kensington, PA, USA | Dun Laoghaire, Ireland | Toronto, Canada | mybacharach.com
Once all of the alarms associated with a given MZ monitor are acknowledged, its red LED will
turn off, and any external alarms connected to the MZ relays will deactivate. All pending alarms
across the entire network must be acknowledged before the Remote Display returns to normal
operation. Once that occurs, its red LED will turn off, and any associated external alarms
connected to the RD relays will deactivate.
Keep in mind that the system will continue to generate new alarms if PPM values above the
alarm thresholds are detected.
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