RKI Instruments M2A User Manual
Page 35
M2A Transmitter Operator’s Manual
30
Responding to a Fail Condition
1.
Verify that the detector wiring is correctly and securely connected.
2.
If the M2A has a replaceable plug-in sensor, verify that the replaceable plug-in sensor in the
detector housing is properly installed.
Low Power Alarm
Low Power Alarm Indications
The M2A senses a low power condition when the DC power source is 9.5 volts or less.
WARNING:
While in a low power condition, the M2A is not an active gas monitor.
When the M2A 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 OLED display and the input voltage
is displayed on the bottom line of the OLED display.
•
The fail relay de-energizes.
NOTE:
The low power alarm cannot be cleared using the ENTER button.
When the voltage increases to 10.0 volts, the low power alarm is cleared and the M2A 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 10.0 volts, the M2A will begin its warm-up sequence.
3.
Verify that the M2A enters normal operation after its warm-up sequence. If necessary, perform
a fresh air adjustment. See “Adjusting the Fresh Air Reading” on page 24.