RKI Instruments 65-2619RK-HC-04 - Manual (Page 24)

19 65-2619RK-HC-04 M2 Transmitter Operator’s Manual
NOTE: If the M2 is in both an alarm 1 and alarm 2 condition, both the A1 and A2 LEDs
will be on, the gas reading will alternate with the ALMS 1&2 message, and
both alarm relays will energize.
Responding to an Alarm 2 Condition
1. Follow your established procedure for a high level combustible gas condition.
2. After the gas reading falls below the alarm 2 setpoint, press the ENTER button to reset
the alarm circuit. Resetting the alarm circuit turns off the A2 light, resets the LCD, and
de-energizes the alarm 2 relay.
NOTE: If the ENTER button is pressed while the M2 is in an alarm 2 condition, the A2
LED will flash but all other indications will remain unchanged.
You cannot de-energize the alarm 2 relay until the gas reading falls below the
alarm 2 setpoint.
Fail Condition
Fail Condition Indications
The M2 indicates a fail condition for any of the following:
• The detector wiring is disconnected or incorrectly connected.
• The display reading is -10% of full scale or lower.
When the M2 senses a fail condition, it alerts you as follows:
• The F LED turns on.
• The gas reading is replaced by the FAIL message.
• The fail relay de-energizes.
NOTE: The fail alarm has a 30 second delay.
Responding to a Fail Condition
1. Verify that the detector wiring is correctly and securely connected.
Low Power Alarm
Low Power Alarm Indications
The M2 senses a low power condition when the DC power source is 18.5 volts or less.
WARNING: While in a low power condition, the M2 is not an active gas monitor.
When the M2 senses a low power condition, it alerts you as follows:
• The F LED turns on.
• The message LowPower is indicated on the top line of the LCD and the input voltage
is displayed on the bottom line of the LCD.
• The fail relay de-energizes.