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DeVilbiss DeVO/MC44-90 - Installation and Operating Procedures; Installation; Operation

DeVilbiss DeVO/MC44-90
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SECTION
3
INSTALLATION
AND
OPERATING
PROCEDURES
A.
Installation
1.
Position
the
concentrator
such
that
the
control
panel
is
convenient
to
the
patient.
lt
must
be
accessible
to
a
240
volt,
50
cycle,
electrical
outlet
capable
of
handling
a
minimum
of
7
amps
that
is
independent
of
other
appliances.
The
oxygen
concen-
trator
should
not
be
located
adjacent
to
radiators,
heaters,
or
hot
air
registers.
NOTE:
Always
observe
the
warnings
imprinted
on
the
instruction
label
(4
Fig.
2)
located
on
the
front
of
the
unit.
They
read:
WARNING:
Oxygen
promotes
rapid
burning.
Do
not
smoke
when
using
the
DeVO/MC44
or
when
near
a
person
receiving
oxygen
therapy.
Do
not
use
near
hot,
sparking,
or
burning
objects.
Electrical
shock
hazard:
Do
not
remove
cabinet.
The
cabinet
may
only
be
removed
by
a
qualified
DeVilbiss
dealer.
B.
Operation
1.
With
the
power
switch
in
the
“OFF”
position,
plug
the
line
cord
into
a
240
volt,
50
cycle,
electrical
outlet
capable
of
handling
a
minimum
of
7
amps.
Push
the
On/Off
switch
(1
Fig.
2)
to
the
"ON"
position.
If
the
switch
does
not
illuminate,
check
the
fuse
(1
Fig.
4)
lo-
cated
in
the
power
connector
on
the
back
of
the
unit.
Replace
if
necessary.
If
the
switch
still
fails
to
illuminate,
and
the
fuse
is
unbroken,
refer
to
the
troubleshooting
guide
for
specific
instructions.
When
the
power
switch
is
turned
on,
the
audible
alarm
will
sound
momentarily.
If
the
unit
has
not
been
used
for
a
consid-
erable
length
of
time,
the
audible
alarm
may
sound
for
an
extended
period
until
the
accumulator
has
had
time
to
pres-
surize.
If
the
alarm
does
not
sound
or
continues
to
sound
refer
to
the
trouble-
shooting
guide
for
specific
instructions.
The
visible
alarm
on
the
control
panel
says
"Service
Required”
(2
Fig.
2).
It
will
illuminate
when
the
unit
is
turned
on
and
remain
on
until
pressure
within
the
system
is
approximately
9
PSI.
With
the
DeVO/MC44
operating,
slowly
turn
the
knob
(6
Fig.
2)
on
the
flow
meter
(S
Fig.
2)
until
the
ball
in
the
meter
is
centered
on
the
line
corresponding
with
-
the
prescribed
flow
rate.
Flow
meter
accuracy
will
vary
slightly
at
5
LPM.
Because
of
this,
the
ball
should
be
positioned
as
shown
on
the
green
card
enclosed
with
every
unit.
If
ball
is
not
set
properly
the
correct
oxygen
concentra-
tions
may
not
be
attained
at
5
LPM.
Therefore,
this
green
card
should
be
retained
or
the
information
recorded
in
a
log
book
for
future
reference.
Important:
If
flow
meter
is
turned
com-
pletely
off
it
may
activate
the
“crimped
tubing
alarm”
and
turn
the
unit
off
because
of
the
severely
restricted
flow.
When
the
DeVO/MC44
oxygen
concen-
trator
is
turned
on
(or
if
not
in
use
for
an
extended
period
of
time),
it
may
require
up
to
30
minutes
for
the
flow
rate
and
oxygen
concentration
to
stabilize.
The
flow
rate
may
drift
slightly
during
this
period
of
time
and
should
be
monitored
and
readjusted
if
necessary.
If
a
humidifier
has
not
been
prescribed
by
the
physician,
the
5/32”
(4
mm)
1.D.
delivery
tubing
can
be
attached
directly
to
the
oxygen
outlet
fitting.
Tubing
should
not
exceed
50
feet
(15
m).
If
a
humidifier
has
been
prescribed,
place
a
bubble-type
humidifier
(6
Fig.
3)
on the
humidifier
stand
(4
Fig.
3)
securing
it
with
the
elastic
strap
(5
Fig.
3)
that
is
attached
to
the
stand.
NOTE:
For
optimum
performance,
the
DeVO/MC44
has
a
pre-set
nominal
output
pressure
of
8.5
PSI
(58.6
KPa),
therefore,
“Set-Type”
humidifiers
will
not
function
properly
at
this
low
pressure.
Only
bubble-type
humidifiers
should
be
used.
Included
with
the
DeVO/MC44
are
2
plastic
fittings
and
a
3-inch
(76.2
mm)
piece
of
tubing.
Use
the
straight
fitting
(2
Fig.
8)
for
all
humidifiers
that
are
less
than
8
inches
(203
mm)
tall
and
the
elbow
fitting
(3
Fig.
8)
for
humidifiers
8
inches
(203
mm)
and
taller.
Attach
the
proper
fitting
by
turning
the
wing
nut
on
the
humidifier
counterclockwise
until
it is
tightened
securely
on
the
humidifier
fitting.
Connect
the
humidifier
to
the
oxygen
outlet
fitting
with
the
3-inch
(76.2
mm)
piece
of
tubing
(4
Fig.
8).
The
tubing
may
have
to
be
shortened
to
prevent
it
from
kinking.
10/87

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