4
、
INSTALLATION AND OPERATION
20
4.4 Alarm Signal
Initial startup of the concentrator
NOTE:
Concentrator may be used during the initial start warm-up
time (approximately 30 minutes) while waiting for the O
2
concentration to reach maximum.
When the unit is turned on, the green light will come on (O
2
concentration greater than 82%±3%). After 5 minutes, the
oxygen sensor will be operating normally and will control the
indicator lights depending on oxygen concentration values. The
explanations of the indicator light functions are as follows.
