Gas Alarm; Gas-Alarm Light; Silencing A Gas Alarm; System Faults - Bacharach PGM-IR Operation And Maintenance

CO Monitor
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2.10 Gas Alarm

2.10.1 Gas-Alarm Light

If the detected gas level reaches one the gas-alarm levels as set by the LEAKLVL, SPILLLVL, or EVACLVL functions,
the front panel ALARM light will flash and the audible alarm, if activated (refer to AUDALRM function page 11), will
start beeping. The ALARM light and audible alarm will automatically turn OFF once the detected gas level drops
below the gas-alarm level.

2.10.2 Silencing a Gas Alarm

Pressing the SILENCE button while the alarm circuit is activated causes the internal audible alarm to turn OFF for a
period of time as set by the SILENCE function (page 11). The front panel ALARM light will continue to flash,
however, as an indication that an alarm condition still exists. The audible alarm will reactivate at the end of the
silence period if the detected gas level is still above the gas-alarm level.

2.11 System Faults

2.11.1 Functional Overview

If a system malfunction occurs (see Fault Code list, page 14), the front panel FAULT light will flash and the audible
alarm, if activated (refer to AUDALRM function page 11), will start beeping.

2.11.2 Clearing / Silencing a Fault Alarm

The FAULT light and audible alarm will automatically turn OFF after the cause of the fault has been eliminated.
Pressing the SILENCE button while a fault condition still exists causes the internal audible alarm to turn OFF for a
period of time as set by the SILENCE function (page 11). The front panel FAULT light will continue to flash,
however, as a reminder that a fault condition still exists. The audible-alarm circuit will reactivate at the end of the
silence period if the cause of the fault has not been corrected.

2.11.3 Viewing the Faults Log

From the Data Display screen, enter the Function Menu screen. Next, use the Keypad buttons to move the arrow
(>) until it points to the FAULTS function, and then press the ENTER button to display the Faults Log screen.
Instruction 3015-9000 Rev 2
The Faults Log screen shows the monitor's current fault status. If the fault is
still present when the FAULTS function is selected, then the current cause
of the fault is displayed along with the date and time it occurred. If the
cause of the fault has been cleared, then the Faults Log screen will show
<0000> and the date and time the fault was cleared. Use the Keypad
buttons to scroll through the fault log. In the screens shown to the left,
record #03 shows that a Sample Flow Fault (fault code <0800>) occurred on
07/11/12 at 08:17, while record #04 shows that the fault was cleared on
07/11/12 at 9:00.
The cause of the fault is identified by a numeric fault code. To convert the
fault code into a text description of the fault, first press the ENTER button
and then use the Keypad buttons to scroll through the display until the text
description of the fault appears. If the fault code is a combination of two or
more faults, then continue to use the Keypad buttons until all fault text
descriptions have been displayed. For example, the fault code <1800>
represents the combination of both a Sample Flow <0800> and a Purge Flow
<1000> fault as shown to the left.
The Fault Log can be cleared as described in Clearing the PPM, Alarms and
Faults Data on page 14.
Operation
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