RKI Instruments M2 Series User Manual
Page 34

29
M2 Transmitter Operator’s Manual
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.
NOTE:
The low power alarm cannot be cleared using the ENTER button.
When the voltage increases to 19.0 volts, the low power alarm is cleared and the M2 will
begin its warm-up sequence.
Responding to a Low Power Condition
1.
Determine and correct the cause of the low power condition.
2.
When the input power increases above 19.0 volts, the M2 will begin its warm-up
sequence.
3.
Verify that the M2 enters normal operation after its warm-up sequence. If necessary,
perform a fresh air adjustment. See “Adjusting the Fresh Air Reading” on page 23.
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