Chattanooga DHT Fluidotherapy A11 User manual
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SERVICE
MANUAL
PA
1 1
2.
M
o
d
e
los
TABLE
OF
CONTENTS
Introduction...
一
ーー
—
A.
Physical
B.
Principles
C.
Control
D.
Cross
E.
Design
IL
IL
IV.
Typical
A.
B.
Uneven
C.
D.
Trouble
.
Unit
Unit
.
Digital
n=>
D.
Controller
E.
No
F.
Low
G.
Uneven
Recommended
and
of
Principles
Section
Changes
Service
Loss
of
Fluidization
Fluidization
Loss
of
Temperature
Cellex
Spillage
Shooting
is
too
hot
will
not
readout
setting
Fluidization
Fluidization..
Fluidization
Engineering
Operation
Illustration
Reference
Problems
....
and
heat
is
.
...
of a Typical
Control
won't
cool
above
about
different
differs
from
or
Spouting
Tool
Kit
Principles
Table
from
....................
...........
dow:
1079
bed
temperature.
readout
Unit
.
AA
.
GUIA
a
ひひ
ひひ
NY
dv
00
00
00
90
VI.
|
VIL
VII.
Vill.
Heater
Replacing
Instructions
A.
B.
Controller
A.
B.
C.
D.
and
Blower
Motors
Step-by-step
Step-by-step
Design
Temperature
Air
Flow......
Bed
Temperature
Heater
.
The
.
Control & Measurement
.
Parts
.
Parts
.
Fluidotherapy
.
Circuit
MMUDEH>
.
Fluidotherapy
の
Shut
Overall
Placement
List/WEP 1 +
Diagram
and
for
Mounting
Instructions
Calibration
Criteria
Regulator
Down
System
Parts
Wiring
Specifications
Heaters
Measurement
.....
New
Controllers
Instructions
Circuit
.
System
Diagram
WEP 1 +
Controller
List.....
Diagram......
.
Controller
an
Diagram
I.
INTRODUCTION
A.
Physical
Ina
Fluidotherapy
medium
air
vided
fluidization,
coming
other
particles
markedly
particles.
viscosity
are
This
the
sion
phase.
almost
variety
is
formed
through
particles.
microscopically
by
the
has
from
The
fluid,
generally
property
body
into
of
these
The
as
freely
of
resistive
and
Engineering
unit,
an
by
uniformly
the
bottom
is
established
rising
unusual
either
fluidized
exhibiting
attributable
permits
the
fluidized
parts
patient
as
of a bed
The
resulting
separated
gas.
This
properties
those
bed
characteristics
submergence
is
very
can
in
water
exercises.
Principles
air-fluidized
distributing
of
finely
state,
by
the
particles
from
"fluidized
which
of
the
gas
or
behaves
to a liquid
bed
much
exercise
and
like a low
state.
of
and
the
suspen-
like a liquid
in
the
can
perform
solid
di-
termed
be-
each
bed”
of
differ
of
the
which
parts
of
bath
a
B.
Principles
Figure 1
Fluidotherapy
(A)
contains
trol
the
of
the
heater
and
controlled
of
the
temperature
ture,
theothercontrolsit.
and
side
through
(B)
and
(D.
Heated
tributor
particles
wiched
and a
third
patient
sors.
Wooden
the
distributor
C.
Control
For
proper
the
airflow,
ment
chamber.
safety
provisions
In
particular,
temperature
heater
years,
have
various
been
of
Operation
illustrates
unit
the
electronic
speed
of
the
(C).
Bed
by
thermistors
sensors
entrances,
filter
(H)
then
over
heater
air
then
(J)
into
the
bed
(K).
The
between
from
being
two
plate
(L)
contacting
supports
and
Principles
operation,
and
the
In
mustbeincorporated
one
must
being
on
without
controllers
employed.
the
general
operation.
blower
temperature
(F)
respectively.
flows
(C)
into
flows
of
finely
foam
perforated
is
there
the
(M)
plates
it
is
temperature
additionto
guard
too
high,
principles
Control
circuits
(B)
and
(D)
measures
and
(G) are
through
plenum
through
divided
distributor
to
temperature
are
in
place.
necessary
basic
against
and
air
flow.
and
control
and
metal
used
of
panel
which
con-
the
output
is
sensed
(E).
One
tempera-
the
top
Air
enters
theblower
chamber
foam
dis-
Cellex*
is
sand-
plates,
prevent
in
against
the
sen-
to
hold
to
control
the
treat-
controls,
as
well.
the
bed
the
Over
the
schemes
4
IH
Cross
sectional
view
fluidotherapy
Figure
of a typical
1
unit.
A
=
С
1973-1978
1978-1982
1982-1985
1985-
Motor
Control
Dayton
Low
Circuit
Low
Circuit
Low
Circuit
Model
Hysteresis
Hysteresis
Hysteresis
4X797
Triac
Triac
Triac
Heater
Control
(On-Off)
Duty-cycle
Duty-cycle
Duty-cycle
Fenwall
Modulated
Modulated
Modulated
Thermostat
Control
Control
Control
Timer
Dayton
Dayton
Electronic
(button
Electronic
(membrane
Model
Model
Module
control)
Module
2E270B
2E270B
switches)
Safety
features
Snap-Disc
Grainger 2 E634
Temperature-sensing
thermistor
if
bed
Low-current
on
which
low
Snap-Disc
located
Circuit
from
pletely
Snap-Disc
heater.
blower
completely
is
on.
cuts
under
is
above
motor
cuts
motor
at
to
being
off
Circuit
from
Pressure
off
power
blower
controller
prevent
Thermostat,
(in
bed)
cuts
off
heater
140ºF.
sensing
off
current.
Thermostat
heater.
turned
when
Thermostat
being
off
heater
blower
com-
heater
to
prevent
turned
when
sensor
if
pressure
falls
to
circuit
at
is
at
heater
which
ambient.
on.
Other
Changes
1973-1986
Until
1978,
solder
connectors
have been
connecti
ions
were
employed.
em]
loyed.
From
1978
to
1985,
spade
connectors were
used.
Since
1986,
modular
|
|
II.
A.
TYPICAL
Note:
Causes
Loss
of
Fluidization
SERVICE
are not
listed
PROBLEMS
by
probability
(Low
or
priority.
Air
Flow)
—
Causes:
Note:
(mixing)
control
B.
Unless
erratic
actions
Uneven
1.
Air
inlet
2.
Blower
brushes)
3.
Leakage
low
pressure
bottom
gasket).
4.
Motor
5.
One
motor
motor
6.
No
power
there
temperature
will
occur.
Fluidization
filter
motor
worn
of air
area
or
around
control
out
unit.
to
unit.
is
good
fluidization
is
clogged.
(or
motor
out.
from
high
(out
motor
circuit
failure.
on
double
readings
to
the
and
Causes:
C.
Loss
(Unit
Causes:
D.
Cellex
Causes:
1.
Hole
in
distributor
distributor
edges.(This
2.
Unit
3.
Pressure
of
Temperature
too
Depends
See
section
Spillage
1.
Improper
2.
Improper
3.
Poor
not
hot
fit
or
on
not
will
level.
imbalance.
III.
or
or
sealed
around
cause
Control
too
cool)
the
symptoms.
usage.
sleeve
fixation.
distortion
spouting.)
of
sleeve.
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