Nellcor LP Ventilator User manual
i
LP6
Plus,
LP10
and
LP20
Service
Manual
5.
Install
angle
of
two
brackets.
the
bracket.
new
8-32 x 3/8"
The
ends
of
hex
the
set
screws
screws
should
into
be
flush
each
with
Right
of
the
piston
the
inside
End
Steel
piston
(flat
toward
bracket)
Figure
Plastic
guide
side
angle
4.6
piston
Silicone
adhesive
here
guide
Figure
6.
4.5
Insert a steel
Apply
ure
4.6)
two
guide
beads
into
of
silicone
each
adhesive
Piston
piston
into
Plastic
~
:
angle
angle
plastic
piston
~
=.
bracket
bracket,
piston
guide
(4)
flat
guides.
(4)
side
first.
(Fig-
October
1997
Caution
=
-
7.
8.
9.
Small
the
amounts
assembly
Insert
that
Inspect
plastic
no
silicone
the
twisted.
Inspect
Kapseal
the
over
of
silicone
should
later.
guides
Quadring
into
is
exposed,
and
angle
wipe
install
Kapseal, assuring
the
Quadring
as
be
used
brackets,
clean
into
that
it
has
shown
so
it
silicone
if
necessary.
piston
no
creases
in
Figure
does
not
side
groove,
or
4.7.
seep
out
inward.
verify
nicks.
Install
Page
into
Check
it
is
not
the
4-5
Repairs
LP6
Plus,
LP10
and
LP20
Service
Manual
Caution
Caution
©:
Be
very
careful
10.
With a fingernail
|:
It
»
shown.
©
of
entire
seated
shown.
is
common
the
piston
Quadring.
between
(Figure
(Figure
11.
Verify
ing
the
proper
for
bumps
Kapseal
not
to
stretch
or
plastic
Ensure
the
Quadting
4.8)
for
the
Kapseal
4.9)
Keep
until
it
is
properly
installation
or
gaps.
is
flat
and
the
Kapseal.
screwdriver,
the
flanges
and
to
rest
working
the
seated.
by
running a finger
Look
down
not
at
an
angle,
at.the
flange
on
on
the
Kapseal
the
edge
as
work
edges
both
piston
around
around
of
the
shown.
the
Kapseal
of
the
sides
of
or
Quadring
the
the
piston
(Figure
Correct
over
the
Kapseal
the
piston
as
perimeter
Kapseal
4.10)
and
feel-
ensure
are
as
©
..
|
Page
4-6
Figure
Incorrect
Figure
4.7
4.9
Figure
Incorrect
Figure
4.8
4.10
October
1997
“\
LP6
Plus,
LP10
and
LP20
Service
Manual
Right
End
Motor
{away
Figure
Piston
mounting
from
4.11
Installation
holes
you)
Crank
(away
from
you)
Dip
edge
.
İnspect
aged.
washers
Place
(Figure
Orient
Dip
the
4.12)
the
rear
gently
Position
angle
set
screw
touches
guide
up
any
brackets,
the
top
the
cylinder.
the
Kapseal
If
it
has, a new
and
three
the
cylinder
4.11)
the
piston
front
edge
Press
the
piston
of
the
piston
ease
the
remainder
the
piston
brackets
in
are
one
the-cylinder
also
just
touches.
slack.
Using a cross
making
of
the
cylinder
(Figure
on
the
Kapseal
ring
retainers
with
the
so
that
the
of
the
against
will
in
the
even
with
angle
bracket
wall.
Turn
Then
sure that
and
4.13)
piston
piston
not
of
cylinder
to
must
on
motor
crankarm
just
the
cylinder
catch
the
piston
the
top
until
the
turn
pattern,
the
tops
that
the
ensure
be
installed.
the
crank
mounting
is
also
down
on
the
into
so
that
of
the
the
top
set
the
bottom
do
this
of
all
four
piston
that
it
has
Check
arm.
holes
directly
into
the
wall
so
that
top
of
the
the
cylinder.
the
tops
cylinder.
plastic
screw
with
so
set
all
piston
that
screw
brackets
remains
not
been
for
three
away
from
away
from
cylinder.
the
cylinder
of
all
Turn
four
centered
Kapseal
four
the
guide
the
top
again
piston
are
even
(Figure
bottom
dam-
nylon
you.
you.
ar
as
you
piston
just
of
the
to
take
angle
with
within
October
Figure
1997
4.12
Page
4-7
Repairs
LP6
Plus,
LP10
and
LP20
Service
Manual
Set
Piston
Tension
Figure
Equal
all
around
ton
edge.
1.
Work
piston
4.13
space
Cross
the
down
Tops
of
four
piston
brackets
even
top
pis-
of
der.
angle
with
cylin-
pattern
piston
into
back
the
cylinder
and
forth
in
about
the
cylinder a few
3/4
of
the
way.
times.
Push
the
Note:
2.
Place
adapter
clamps.
Press
and
the
with
Ifa
new
20-25
4.
If
top
proper
adjusted
If
the
plug
Switch
and
see
if
button
the
top
cylinder
cmH,0.
the
tops
of
the
range while
correctly.
not
correct.
right
end
to
the
the
hold
the
the
needle
until
of
the
is
installed
of
the
cylinder
Adjust
plate
assembly
manifold
tester
on.
SET
PISTON
falls
the
tops
cylinder.
in a unit
piston
Go
angle
(within
the
to
step
the
air
in
the
of
the
1/16"),
piston
7.
set
screws
into
the
tube.
Clamp
button.
good
piston
brackets
was
Look
range
angle
during a PM,
are
and
the
rising,
as
follows:
Right
in
at
of
End
the
12-18
brackets
the
equally
gauge
then
Tester.
place
gauge
cmH,O.
are
"Good"
distant
needle
the
Add
with
the
on
the
Hold
again
range
from
was
in
brackets.
the
two
left
even
is
the
the
are
Page
4-8
October
1997
Right
:
LP6
Plus,
LP10
and
LP20
Service
Manual
End
Note:
]
If
the
top
bracket
bracket
a.
b.
e.
set
screw
will
be
forced a little
to
ride a little
For
brackets
Verify
For
Verify
After
to
If
by
an
adjust
proper
After
to
bottom
brackets
bottom
adjustments
re-test
the
tension
the
gauge)
equal
screws
range
adjustments
re-test
is a little
tighter
higher.
lower.
that
are
too
set
screw
that
are
too
set
screw
are
made,
the
piston
amount
of
the
was
tension.
piston
outside
in
all
counter-clockwise
the
adjust
piston
screws
are
made,
tension.
than
The
high,
is
still
low,
is
still
return
against
the
of
the
clockwise
return
the
reverse
loosen
snug
tighten
snug
the
but
the
but
to
the
cylinder
proper
range,
brackets.
to
lower
ro
to
bottom
is
true
top
not
overly
top
not
overly
the
beginning
adjust
If
above
pressure.
raise
pressure.
the
beginning
screw
to
cause
set
screw
set
screw
wall
that
an
slightly.
tight.
slightly.
tight.
of
this test
(as
measured
all
set
proper
If
of
this
angle
angle
screws
range
below
test
6.
7.
Repeat
Check
steps
that
as
necessary
the
piston
to
obtain
is
centered
proper
in
the
leveling
cylinder.
and
tension.
October
1997
Page
4-9
Repairs
LP6
Plus,
LP10
and
LP20
Service
Manual
System
Leak
Test
1.
Press
the
right
is
depressed.
is
released.
Press
the
manifold.
Remove
Remove
Apply a drop
bly
such
Push
Inspect
a.
b.
and
hold
side
and
the
the
that
the
piston
the
The
solenoid
All
three
erly,
and
the
must
Pressure
hold
the
assembly
air
tube
of
Loctite
the
about
Manifold
is
pieces
no
kinks
LEAK
stay
in
may
TEST
the
drop
VENT
from
adapter
242
Loctite
1/2
way
Assembly
securely
of
1/4"
are
present.
button.
GOOD
very
button
the
Right
plug.
on
each
flows
around
down
and
mounted.
internal
range
slowly
to
release
End
set
screw
the
into
verify
tubing
The
needle
when
when
the
Tester.
and
threads,
the
cylinder.
that:
are
of
the
the
leak
LEAK
TEST
pressure
tilt
the
wipe
present,
seated
gauge
test
button
button
from
inside
subassem-
off
excess.
prop-
on
Page
4-10
C.
Patient
secure,
Pressure
and
clean.
and
Exhalation
Valve
tubes
appear
straight,
October
1997
i:
\LP6
Plus,
LP10
and
LP20
Service
Manual
Right
End
Motor/Gearbox
Installation
1.
Inspect
the
Motor/Gearbox
Wires
Wires
are
not
are
correctly
follows:
Wire
Color
red
yellow
black
Terminals
Two
Motor/Gearbox.
There
Motor/Gearbox.
dowel
is
no
are
and
damaged.
properly
pins
are
grease
Clean
positioned
present and
in
verify
Position
(+)
(0)
O
seated.
the
seam
the
gearbox
that:
on
magnetic
not
between
bent
of
sensor
in
the
any
residual
the
two
terminals
base
of
halves
of
grease.
as
the
the
|
October
1997
Key
is
flush
There
in
the
with
are
output
the
no
burrs
end
shaft
of
the
on
the
and
fully
output
key and
seated
shaft.
crank.
in
slot
and
its
Page
end
4-11
is
Repairs
LP6
Plus,
LP10
and
LP20
Service
Manual
Figure
4.14
Gearbox
Slip
the
gearbox's
gear
shaft
to
the
crank
into
to
reposition
Adjust
Position
the
Apply a drop
crank
Position
the
Apply a drop
and
the
crankarm
the
crank
arm
arm
and
the
crank
arm
tighten.
gearbox
gearbox
output
line
up
position
the
key
is
facing
of
Loctite
tighten.
is
facing
of
Loctite
with
and/or
in
the
so
it
on
the
up.
on
the
up.
242
shaft
the
output
is
flush
right
242
left
to
into the
slot
in
rotate
shaft.)
with
side
to
the
É
side
the
small
crank.
the
the
the
of
the
large
of
the
screw,
(To get
crank,
rotor
(Figure
cap-head
you
of
the
4.14)
end
of
the
cylinder
cylinder
install
the
key
may
both
Motor/Gearbox
output
so
screw,
so
the
the
left
install
right
into
shaft.
side
side
crank
in
the
rotate
of
into
of
arm
Page
4-12
October
1997
"i
LP6
Plus,
LP10
and
LP20
Service
Manual
Right
End
Rotate
8.
aligned.
Figure
the
rotor until
4.15
the
magnetic
sensor
and
the
crank
arm
are
Magnetic
proximity
sensor
October
1997
Loosen
netic
Press
the
spacer.
the
Magnetic
10.
Route motor
ensure
gearbox.
11.
Push
box
the
dowel
12.
Secure
Screws
ensure
the
Sensor
the
that
the
will
align
the
using
wires
two
Spacer
sensor
Check
Sensor
wiring
they
piston
with
pins
on
gearbox
crissctoss
have
4-40 x 3/4"
between
firmly
into
the
spacing
Gauge.
will
the
the
the
base
to
the
nor
been
against
assembly
not
be
cylinder
motor
of
cylinder
pattern.
pinched.
cap-head
the
magnetic
the
spacer;
between
Reset
if
not
toward
pinched
or
rotate
mounting
the
gearbox
with
Re-check
hex
screws
the
crank
acceptable. (Figure
the
between
holes
into the
four
and
sensor
tighten
the
and
in
and
the
manifold
the
cylinder
rotor
so
in
the
cylinder
6-32 x 1/2"
motor
wire
place
place.
cylinder.
the
the
crankarm.
Remove
sensor
4.15)
air
tube
and
that
the
holes.
cap-head
routing
Page
Mag-
using
and
the
gear-
Insert
hex
to
4-13
Repairs
LP6
Plus,
LP10
and
LP20
Service
Manual
Bearing
Replacement
Figure
See
Figure
1.
Remove
ing
from
pin
4.16
Crank
rod
the
out
pin
4.16.
the
mount
crank
of
the
——>&
Crank
two
arm
6-32 x 1/2"
to
the
assembly.
assembly.
Press
+
piston
Press
Connecting
rod
Nylon
washer
flat-head
plate.
the
hex
Remove
crank
Connecting
rod
pin
screws
pin
the
and
holding
three
the
y
Connecting
rod
mount
the
connect-
retaining
connecting
rings
rod
Page
4-14
Note:
The
crank
should
2.
Press
clean
necting
bores
pin
be
pressed
the
the
for
must
out
two
bearings
adhesive
tod.
Lay
the
bearing
remain
with
the
out
residue
the
connecting
flanges
in
the
crank
locating
of
the
from
inside
rod
are
facing
arm.
The
mark
up.
(Figure
connecting
the
bearing
on a paper
up.
connecting
4.18)
rod.
Using
holes
towel
so
rod
Acetone,
on
the
the
counter-
October
pin
con-
1997
LP6
Plus,
LP10
and
LP20
Service
Manual
Right
End
Figure
3.
4.17
Spray
with a brief
outer
minutes
Recesses
flanges
the
inside
burst
surface
of
minimum.
for
face
of
the
of
Loctite
the
connecting
earing
bearing
up
holes
for
the
Primer
rod.
Allow
ο
bearings
N.
Wipe
the
primer
in
the
the
connecting
primer
to
dry
from
for
three
rod
the
October
1997
Note:
Caution
4.
Carefully
Rotate
5.
Apply a chin
side
Application
component
6.
Press
ing
Press
the
surface
within
the
press
only
clean
races
layer
of
the
of
the
adhesive
one
bearing
tool,
and
on
the
the
outside
of
the
bearings
of
Assure
bearing.
minute.
into
the
bearing
outer
race
race
on the
and
Electrical
should
be
connecting
press
plate.
of
the
two
feel
for
any
Retainer
followed
rod,
bearings.
by
using a bearing
(Figure
replacement
roughness.
adhesive
the
on
installation
press,
4.17)
Page
bearings.
the
out-
of
the
bear-
4-15
Repairs
7.
Remove
any
excess
adhesive.
LP6
Plus,
LP10
and
LP20
Service
Manual
Figure
4.18
Nylon
Locating
washer
mark
(2)
8.
Hold
the
connecting
the
connecting
nylon
nylon
these
Press
spaced
washer,
washer
parts.
the
on
rod
the
onto
Install
pin
through
either
mount
connecting
the
the
side
rod
mount
pin.
assembly
the
of
the
with
pin
through
rod
(Figure
mount
mount.
Connecting
Connecting
rod
the
locating
the
hole
(bearing
4.18)
in a mounting
until
(Figure
flanges
Slip
the
two
4.19)
pin
mark
from
up),
the
pin
bracket
grooves
rod
side
up.
below.
and
up
through
press
are
Start
Place
a
another
plate.
equally
Page
4-16
Figure
4.19
Press
Connecting
red
pin
October
1997
7
LP6
Plus,
LP10
and
LP20
Service
Manual
Right
End
Figure
Crank
4.20
arm
Note:
Turn
over
assembly
Figure
4.21
9.
Apply a light coat
onto
the
pin.
just
passes
the
and
press
of
lubricant
Press
the
bearing
as
shown.
Crank
crank
inner
onto
pin
race.
(Figure
pin
the
into
crank
pin. Slip a nylon
the
bearing
4.20)
Connecting
rod
pin
until
the
washer
groove
Nylon
October
1997
washer
10
11.
12.
.
Push
Inspect
Apply
attach
three
the
ers
are
in
bearings
silicone
the
head
hex
retaining
assembly
place.
are
screws.
Ensure
properly
adhesive
crank
assembly
rings
into the
for
workmanship.
the
spacing
seated.
to
the
onto
two
mountin
the
grooves
Ensure
on
the
piston
로
on
the
pins
Holes
with
pins.
the
three
is
correct.
in
two
6-32 x 1/2”
(Figure
nylon
Ensure
the
piston
Page
4.21)
wash-
the
and
flat-
4-17
Repairs
:
LP6
Plus,
LP10
and
LP20
Service
Manual
Manifold,
Leaf
And/or
der
Replacement
Cylin-
1.
Manifold
a.
b.
9
a
2.
Remove
3.
If
ing
and
Remove
Remove
Separate
Remove
end
plate.
retainer
expiration
ring.
Cylinder
the
all
the
all
leaf
Removal
gearbox
16
screws
manifold,
gasket
ring,
filter
is
replaced,
and
piston
from
the
cylinder
material
screen
reinstall
Note:
low
volume
rates.
assemblies.
right
end
and
right
from
manifold,
and
O-ring,
O-ring,
Replace
delivered
Use
Kit
#1726
plate.
end
plate.
cylinder
if
necessary.
filter
screen
this
leaf
or
if
at
Kit
and
and
retain-
unit
low
flow
#1724.
right
has
Note:
leaf
#1724,
Page
4-18
Replace
vibration.
this
Use
leaf
Kit
#1670
for
internal
or
Kit
Figure
4.23
October
1997
1126
Plus,
LP10
and
LP20
Service
Manual
Right
End
Inspect
inserts
If
installing a new
alcohol,
Set
closest
top
Inspect
æn
Install
Place
.
ure
Install
alignment
plate
10.
Inspect
inder.
11.
Start
alignment
compress
12.
Remove
more
start
Figure
4.24
manifold
are
present.
if
necessary.
cylinder
of
to
you.
the
cylinder
the
on
manifold
cylinder
manifold
4.24)
the
manifold
pins
over
manifold
cylinder
three
6-32 x 1"
pins.
gaskets.
the
three
6-32 x 1"
10
6-32 x 3/8"
SOLENOID
assembly
Replace
cylinder,
work
Insert
three
as
shown
and
gasket
assembly
gasket
in
manifold
gasket.
gasket
Turn
alignment
screws.
screws
LOCK
INSTALLED
MANIFOLD
for
internal
inspect
surface
with
alignment
in
cylinder
over
alignment
over
cylinder
over
as
for
proper
screws
screws
in
down
pins
Remove
in
the
WASHER
ON
AND
CABLE CLAMP
FLAT
proper
tubing
cylinder
motor
pins
Figure
4.25.
gaskets
pins
gasket.
the
manifold
shown
SCREW
CABLE CLAMP
SCREW
in
alignment
the
three
with a hex
from
the
remaining
remaining
BETWEEN
WASHER
ADHESIVE
SERIAL
assembly
as
needed
and
mounting
into
every
for
tears
and
adjust
Note
and
Figure
the
NUMBER
4.25,
inside
cylinder
driver
cylinder
right
VISIBLE
and
verify
(Figure
clean
with isopropyl
holes
down
other
hole
and
cleanliness.
to
fit
orientation.
install
Place
and
outside
holes
not
just
enough
and
start
alignment
end
plate
10
brass
4.24).
and
in
the
cylinder.
(Fig-
two
more
right
end
of
cyl-
having
to
three
pins
and
holes.
October
1997
3.5"
TUBING
OUTER
3
PIN
PIN
CONNECTOR
OUTER
Page
PIN
4-19
Repairs
13.
Verify
manifold
exterior
14,
Tighten
inder screws,
the
following:
and
cylinder
of
the
screws
as
manifold
gasket
cylinder.
evenly
shown
and
in
LP6
gasket
is
visible
in a crossing
Figure
4.26.
Plus,
LP10
is
visible
around
pattern,
」
and
LP20
around
the
entire
starting
Service
all
edges
interior
with
Manual
of
the
the
and
cyl-
Figure
Manifold
Manifold
Cylinder
4.25
Right
end
gasket
assembly
gasket , a
Cylinder
plate
gs
SV
p
N
^
σ
の
LS
EN
(Te
È
Alignment
/
Alignment
9
pin
pin
P
Figure
4.26
Page
4-20
Motor
housing
holes
on
bottom
October
1997
LP6
Plus,
LP10
and
LP20
Service
Manual
Back
Panel
Back
Panel
Figure
4.27
Battery/
Transformer
Blocks
(2)
Battery
bracket
x
October
1997
Battery
Replacement
See
1.
2.
3.
4.
Figure
Verify
4.27.
the
Loosen
assembly
Check
Install
holding
bracket.
the
che
e
e
new
two
pin
four
in
place.
new
The
black
side
of
There
battery
the
battery.
connector
3"
hex
Remove
battery
the
are
subassembly
wire
connector.
no
cracks
and
Be
on
the
screws
the
battery.
is
negative
on
tighten
careful
battery
in
the
for
and
the
battery
the
four
not
assembly
bracket
the
following:
connected
case.
3"
hex
to
overtighten
is
disconnected.
holding
to
the
screws
and
the
battery
non-pointed
in
the
bracket
crack
Page
4-21
the
Repairs
LP6
Plus,
LP10
and
LP20
Service
Manual
AC
Cord
Replacement
Figure
See
1
4.28
Figure
Note
Disconnect
4.28.
the
position
the
LABEL
of
the
power
cord
BLACK
CORD
WHITE
POWEA
CORDWIRE
power
from
cord
the
BLUE
BROWN
GRN/YEL
GREEN
CORD
POWER
WIRE
connections
terminal
WIRE
POWER
WIRE
STRAIN
to
strip.
ASSY.
RELIEF
the
terminal
strip.
Squeeze
rear
Inspect
16")
Install
end
wire
Install
a
Remove
の
N
Connect
Apply
©
panel.
the
panel.
new
and
no
strain
of
the
up.
power
the
power
Loctite
strain
relief
power
insulation
large
cord
relief
on
insulation.
cord
and
terminal
cord
242
to
with
for
properly
damage.
power
Orient
strain
strip
from
to
the
terminal
terminal
pliers
to
stripped
cord
approximately
the
relief
into
the
back
strip
strip
screws
pull
the
wires
strain
tab
the
back
panel.
as
shown
and
power
cord
(approximately
one
inch
down
and
panel.
(Figure
reinstall
4.28).
onto
from
from
the
the
the
5/
the
green
back
Page
4-22
October
1997
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