RKI Instruments Beacon 110 Operator's Manual page 29

Responding to an Alarm 2 Condition
1. Follow your established procedure for a high level combustible or toxic gas condition
or an increasing oxygen concentration condition.
2. Oxygen alarms are factory set as self-resetting and will automatically clear when the
oxygen reading rises above the alarm 2 setpoint.
3. Alarms for all other gas types are factory set as latching. After the gas reading falls
below the alarm 2 setpoint, press the reset switch to reset the alarm circuit. Resetting
the alarm circuit silences the buzzer, turns off the Alarm 2 LED, returns the LCD to the
normal operation screen, de-energizes the alarm 2 relay, and turns off the strobe if it is
installed and set to operate for alarm 2.
NOTE:
Fail Condition
Fail Condition Indications
The Beacon 110 indicates a fail condition for any of the following:
• The detector head wiring is disconnected or incorrectly connected.
• The display reading is -10% of full scale or lower.
When the Beacon 110 senses a fail condition, it alerts you as follows:
• The fail LED turns on.
• The gas reading is replaced by the FAIL message.
• The buzzer sounds a steady tone.
• The fail relay de-energizes.
• If installed, the strobe flashes.
NOTE:
Responding to a Fail Condition
NOTE:
1. Verify that the detector head wiring is correctly and securely connected.
2. If the detector head includes a replaceable plug-in sensor, verify that the replaceable
plug-in sensor is properly installed.
3. If necessary set the zero reading for your detector head as described in "Calibration
Mode" on page 34.
Beacon 110 Operator's Manual
If the reset switch is pressed while the Beacon 110 is in an alarm 2 condition,
the buzzer will be silenced and the alarm 2 LED will flash but all other
indications will remain unchanged. If the strobe is installed and its alarm 2
operation is set to CanReset in Configuration Mode, the strobe will turn off.
You cannot de-energize the alarm 2 relay until the gas reading falls below the
alarm 2 setpoint.
The fail alarm has a 30 second delay.
A fail condition cannot be reset using the reset switch.
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