Invacare Perfecto2 Series User Manual page 21

be operating normally and will control the indicator lights depending
on oxygen concentration values.
Explanation of Oxygen Purity Indicator Lights
1148074-F-06
O
2
Symbol
Purity
SYSTEM
A
O OKAY O
2 2
over 85%
O
2
between
B
73% and
85%
SYSTEM
FAILURE
C
O below
2
73%
D —
Indicator Explanation
Light
(LED)
No action is
GREEN
needed. Normal
light
for operation.
YELLOW Immediately call
supplier. You may
light (Solid)
continue to use the
concentrator unless
YELLOW
instructed otherwise
light
by your supplier. Be
flashing
certain that backup
oxygen is nearby.
Continuous Audible
Alarm
Sieve-GARD™
Compressor
Shutdown
RED light
(Solid) SYSTEM FAILURE.
Total unit shutdown.
Immediately switch
to backup oxygen
supply and call
supplier.
Call Supplier
—
Usage
21