- 13 -
4) Press and hold the POWER button for three seconds to turn on the detector. (two beeps) The three
green LEDs inside the status indicator start flashing and
“- - - -” is displayed on the LCD. The
warm-up cycle lasts two minutes. During the warm-up cycle, the analog output is fixed at 4 mA,
gas and fault alarms are deactivated, and the detector cannot enter to User mode.
5) When the warm-up cycle is completed, the three green flashing LEDs inside the status indicator
become solid, the gas concentration is displayed on the LCD, and normal operation starts.
6) Perform an alarm test. (Refer to 7-4-5.
“Alarm Test”)
Confirm that an alarm activates.
7) To turn off the detector, press and hold the POWER button for three seconds to stop its operation,
then set the main power switch to the off (down) position.
Warm-up operation
Normal operation
CAUTION
If the gas detector has not been powered for a long period of time (i.e. between shipment
and initial energization), it may take longer for the sensor to stabilize.