SECTION 24—ALARM TEST
Perfecto
2
™
V
80
Part No 1164934
SECTION 24— ALARM TEST
Alarm and Sensor Tests
DANGER
To
prevent
electrical
shock,
ALWAYS
disconnect
concentrator
from
electrical
outlet
before
servicing.
Check
alarms
periodically
for
proper
function.
Power Loss Alarm
With
the
unit
running,
remove
the
line
cord
from
power
source.
The
power
loss
alarm
mode
should
sound
the
audible
alarm
IMMEDIATELY
or
within
30
seconds.
NOTE:
With
the
unit
unplugged
and
inoperable
for
a
short
period
of
time,
the
battery
free
circuit
will
be
drained.
If
power
failure
alarm
does
not
sound
with
unit
unplugged
and
power
switch
on,
the
battery
free
circuit
is
drained.
It
will
recharge
when
unit
is
plugged
in
and
switched
on.
Low Pressure Test
NOTE:
For
this
procedure,
refer
to
FIGURE 24.1
on
page 81.
1. There
are
two
separate
failure
modes
for
Low
Pressure:
• Low
product
tank
pressure.
(Pressure
in
tank
drops
below
a
preset
value,
typically
7
p.s.i.).
• Failure
to
reach
the
set
point
pressure
within
a
prescribed
time
limit,
or
Timeout
Failure.
Test One
1. With
unit
running,
set
flow
at
maximum
rating.
2. When
the
main
valve
switches,
pull
the
stem
on
the
compressor
relief
valve
out
as
far
as
it
will
go
and
hold
it.
3. The
low
pressure
alarm
should
activate
within
30
seconds.
Refer
to
SensO
2
Alarm
Threshold
on
page 83
for
shutdown
mode.
Test Two
1. With
unit
running,
set
flow
at
maximum
rating.
2. Remove
the
pressure
sensor
tubing
(tie
‐
wrap)
from
the
top
of
the
product
tank
(not
shown).
3. The
low
pressure
alarm
should
activate
within
30
seconds.
Refer
to
SensO
2
Alarm
Threshold
on
page 83
for
shutdown
mode.
