4
.
INSTALLATION AND OPERATION
15
4.4 Status Indicator Display
NOTE:
The concentrator may be used during the initial warm-up time
(approximately 30 minutes) while the O
2
concentration is reaching its
maximum level.
When the unit is turned on, the green light will turn on (indicating the O
2
concentration is greater than 82%±3%). After 5 minutes, the oxygen sensor will be
operating normally and the indicator lights will adjust if the oxygen concentration
values change. The explanations of the indicator light functions are as follows:
1.
Green Light
- O
2
concentration is greater than 85%±2%. Normal Operation.
2.
Yellow Light
- O
2
concentration is greater than 73%± 2% and less than
85%±2%.
3.
Red Light
- O
2
concentration is less than 73%±2%. An intermittent audible
alarm will sound.
4.5 Turning the Concentrator Off
Press power switch to the O position and unplug the concentrator from the power
outlet.
