Hoffrichter Trend 300 User manual

USER`S MANUAL
TREND 300
TREND 300

Serial Number
Each HOFFRICHTER device is provided with a serial num-
ber which guarantees the product can be traced back.
The serial number is on the type identification plate to
be found on the reverse of the device.
In case of any query or complaint, please always state
the serial number.
Conformity
The device complies with the
requirements of the directives
93/42/CEE.
2
Respiration Therapy Device TREND 300
0123

3
Respiration Therapy Device TREND 300
Legend of Symbols 04
Safety Instructions 05
Intended Use 08
Technology of TREND 300 09
Hints to be observed before starting 10
Description of the Device 11
Proper Use of the Device 14
Use of Oxygen 16
Cleaning Instruction, Changing of Filter 17
Alarm Functions of TREND 300 18
Functions of TREND 300 19
Trouble Shooting 23
Display Indications 26
Inspection and Check 27
Approved Accessories 28
Technical Data 29
TREND 300 - Patient Pass 30
Contents

Information on the Type Identification Plate:
Pay attention to user´s manual
Applied part type BF
Protection class II (insulation - enclosed)
CE - Conformity Statement
Do not dispose of the device with normal
domestic waste.
For information on the proper disposal of the
device, pleasa contact your responsible
customer service.
4
Respiration Therapy Device TREND 300
Legend of Symbols

5
Respiration Therapy Device TREND 300
Safety Instructions
Before first use of your CPAP-device, please read this
manual thoroughly.
Keep the manual in a safe place, so that you will be able
to consult it whenever necessary.
Power Supply
TREND 300 has a switched mode power pack with
a wide power supply range of 100 V~ … 240 V~,
50 ... 60 Hz. This allows connection to power supply
lines all over the world. It should be noted that this unit
must be connected only to a grounded contact socket
outlet.
This device is a product of protection class II (protective
insulation). The grounding wire of the power cord is
internal used as functional earth.
DC operation is also possible with 24 V DC, e.g. for
mobile use in a truck or caravan. Connect the unit to a
DC power source only with the connecting cable sup-
plied.
Attention!
HOFFRICHTER GmbH shall not be held liable for any
damages or consequential damages, consequences
for safety, reliability and performance of the device, in
case of:
■Tampering, modifying, adding expansion features,
adjustment, repair and maintenance executed by
persons who have not been authorized by us.
■Building in accessory and spare parts which have
been fabricated by other manufactures and not
been released by us for use in the respiration
therapy device TREND 300 .
■Using the therapy device in a different way than
what has been described in the manual.

6
Respiration Therapy Device TREND 300
Please observe the following points in order to avoid
dangerous situations which may occur:
1.Use the device exclusively for your own respiration
therapy and only according to what has been
directed by your physician.
2.Only use accessory recommended and offered
by your authorized dealer.
3.Check the alarm functions of the device at
regular intervals (see page 18).
4.Make sure the small opening in the mask or in the
connecting piece between mask and tube is
always free so that the exhaled air containing
CO2 can escape.
5.Never place TREND 300 in a cupboard shelf or
under the bed. Make sure the air circulation
around the device is not hindered.
6.Keep the unit away from heaters and heated
surefaces.
7. In case oxygen is given to you in connection
with the respiration therapy make sure that all
regulations in view of general and fire safety during
dealing with oxygen will be observed.
8. During mobile use, the device is only to
switched on in the parked car.
9. You should immediately consult your physician if
due to use of the device problems such as dryness
of the mucous membranes in nose and pharynx,
trouble of the frontal sinus, earache, a runny nose,
hypersensitiviy of the skin, irritability, change of
mood, disturbance of the sense of direction or
memory defects occur.
10. You are requested to contact your authorized dealer
immediately, if the device does not function in a
proper way.
Safety Instructions

7
Respiration Therapy Device TREND 300
Safety Instructions
In order to maintain electric safety please observe the
following points:
■Do not switch on the device if casing or cable
are damaged.
■Do not open the casing of TREND 300. In case of
failures always contact your authorized dealer.
■The device is always to be kept dry.
■Never use the device in damp rooms
or in a bathroom.
■Never place vessels or glasses
filled with liquids on the device.
■In case the device falls into water, do not touch it.
■Do not place the device in the near of
water-containing vessels (or a bath-tub).
■Before cleaning the device the AC power plug
is always to be pulled out of the socket.
Stand-by-Operation
When the turbine is switched off the unit is in stand-by
mode and this is indicated by the illuminated display
with date and time.
When an air humidifier is connected to the unit, this is
in standby mode; the present heater setting is indica-
ted.
The power consumption in this operating mode is
approx. 3,5 Watts.
By switching off the device with the main switch on the
reverse of the device TREND 300 is totally switched
off.
In this case the internal clock is supplied by
a built-in battery.
■TREND 300 can safely remain
in standby operation all the time.
NOTE:
The memory of the digital trigger may be inaccurate if
the mask is put on and taken off repeatedly while the
fan is running. If the digital trigger does not change the
pressure correctly there after, it is recommended to set
back the trigger computer memory. Turning the ventila-
tor off and on once is sufficient.

Intended Use
The TREND 300 is for treatment of nighttime sleep
apnea in patient weighing at least 30 kg.
This device is not intended for use with ventilator-
dependent patients.
The TREND 300 provides positive airway pressure in
two pressure levels.
This device is designed to be used with nasal breathing
masks equipped with an exhalation port to allow a con-
tinuous flow of air through the mask. Do not wear the
mask with the device turned off as rebreating of the air
occurs. Refer to the manufacturer´s instructions for the
mask and exhalation port.
Devices equipped with an AquaTREND accessory
humidifier provide humidification of the air delivered to
the patient.
Contraindications
The respiration therapy may be contraindicated for pati-
ents with the following pre-existing medical conditions:
■Bullous lung diseases
■Pneumothorax
■Extremely low blood pressure
■Pneumocephalus or pre-existing CSF leaks or head
trauma.
Acute sinus or middle ear infection may be an indication
to suspend the therapy. Contact your physician if you
have questions about this condition.
Devices equipped with an AquaTREND accessory
humidifier are not intended for use with medications,
aromatic oils or other substances added to the humidi-
fier water.
Not for use with patients whose supraglottic airways
have been bypassed.
8
Respiration Therapy Device TREND 300
Intended Use

TREND 300 is a respiration BILEVEL therapy unit for
treatment of nighttime sleep apnea. An air humidifier
can be obtained as an accessory.
For the pressure generation TREND 300 has an
electronically controlled blower. In order to keep
the patient's burdening as low as possible the
turbine has been equipped with sufficient power
reserves as well as a fast control circuit.
The pressure control is applied directly in
the breathing-mask. So the breathing musculature
needs not balance out the flow losses of the
breathing air in tube and humidifier.
That means the breathing work is made as
easy as possible.
NOTE:
No negative pressure is been generated during
exspiration phase.
Trigger device
The respiratory trigger recognises the patients efforts to
breathe in and out and transmits them to a control
mechanism.
The trigger mechanism of the TREND 300 has its own
microcontroller to optimise the release of the trigger by
dynamic adjustment of the release criteria to various
sleeping phases.
In conjunction with optimal flank adjustment the patient
experiences a pleasant ventilation which gives him or
her the impression that the unit pursues the natural
breathing mechanisms without any inertia.
TREND 300 has separate air ductings for breathing
air and convection air for the electronics.
The cold temperature technology applied in the power
electronics ensures a low temperature and a long life of
the device.
For the control of all functions TREND 300 has a
built-in microcomputer. The integrated quartz
alarm clock increases the comfort during use
of the device.
The air heats up marginally on passing through the unit
and has a higher water uptake capacity. Particularly in
winter when the room air is dry the mucous membranes
in the mouth and nose can dry out. This is unpleasent
and in isolated cases also leads to infections. Air humi-
dification may therefore also be necessary in conjunction
with respiration therapy.
AquaTREND accessory devices are available which
provide humidification. The humidifier simply clicks into
position and can be removed by pressing the release
button.
Refer to the AquaTREND user´s manual or contact your
dealer for more information.
9
Respiration Therapy Device TREND 300
Technology of TREND 300

Before operating the device, please pay attention to the
following:
1. Never switch on the device if it has recently
been in a very cold environment. Wait
approximately one hour for temperature
compensation.
2. Check the filter cassette at regular intervals and
change it regular (see pages 17, 26). Never use
the device without filter cassette.
3. Clean the mask system regularly, and check the
accessory especially the therapeutic tube, mask
and fixing straps. We recommend to wash the
face before going to bed as skin oils and
cosmetic should be removed.
Thus, the life-span of the mask will be increased
and skin irritations can be avoided.
4. Verify that the measuring tube (smaller tube) is
correctly attached, open and free of moisture or
obstructions. If water enters this tube during
cleaning, take special care to remove it.
Please pay attention to the following
advices for setting up:
1. Never place the device near a heater
or radiator. Make sure the air circulation especially
under and behind the device is not hindered by
furniture, curtains or pillows.
2. Place the device beside your bed on a firm and even
surface such as a nightstand or bedside table.
3. During mobile operation the device is also to
be placed on an even and firm surface which
should have a border preventing from falling down.
10
Respiration Therapy Device TREND 300
Hints to be observed before starting

11
Respiration Therapy Device TREND 300
Description of the Device
Measuring Tube
Connection
Air Outlet
Display
Program Keys
Control Key
Input Key
ON/OFF
Connectors for
AquaTRE D (accessory)
Release Button
(Top) for accessories
HOFFRICHTER TREND 300
Front View

12
Respiration Therapy Device TREND 300
Description of the Device
Fernbedienung
Remote Control
DC IN 24 V
TREND 300
AC Power Plug
AC Power Switch
Type Identification Plate DC-Input RS232-Interface
Filter Cassette (Top)
Air Input
Back of the Device

13
Respiration Therapy Device TREND 300
Description of the Device
Breathing-Mask
(additional accessory) Therapy Tube
(1,80 m)
Carrier Bag
Measuring Tube
Stoppers
Filter Cassette
Cable for
Motor Car
Exhalation Port
(additional accessory)
Power Supply Cable
Accessory and Spare Parts

1.As soon as the device is placed properly
please connect it with the power supply cable
to an earthing contact socket.
2.Switch on the AC power switch on the back of the
device. The device welcomes you with a little text
in the display. Afterwards the display switches
over to indication of current date and time.
3.Connect the therapeutic tube
a) to the air outlet and
b) to the breathing-mask.
The device must be used with an exhalation port.
4.Connect the measuring tube
to the sensor socket (measuring tube connection).
5.Put on the breathing-mask. If the automatic
operating mode has been selected the device
will start working upon the first breath. In case
of manual operating mode you must press
the control key (ON/OFF) for starting the device.
6.Now first TREND 300 starts with the prescribed
pressure for the certain period of time you have
selected for mask test. During this time you
should fit the mask correctly in order to eliminate
possible leakages.
14
Respiration Therapy Device TREND 300
Proper Use of the Device
TREND
300
ON/OFF
HOFFRICHTER
Fernbedienung
Remote Control
DC IN 24 V
TREND
300
TREND
300
ON/OFF
HOFFRICHTER
23a
3b 4

7.Place the therapy tube in such a way that
there is no tension onto the mask when you
lay down.
8.Breathe deeply and calmly and only through
the nose. If the softstart-function is activated
the device will after leakage test automatically
reduce the therapeutic pressure first and then
gradually increase it until the value prescribed is
reached. This enables you to fall asleep while
the device is working with a reduced pressure.
NOTE:
Read in the section "Programming" how the time
for softstart and mask test can be adjusted to your
individual requirements.
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Respiration Therapy Device TREND 300
Proper Use of the Device
TREND
300
ON/OFF

16
Respiration Therapy Device TREND 300
Use of Oxygen
Please observe the following advices if you
must additionally inhale oxygen during the
respiration-therapy:
If you want to lead the oxygen directly into the
breathing-mask please use a non-buckling tube
made from material approved for medical applications.
Consult your authorized dealer.
NOTE:
At a fixes flow rate of supplemental oxygen flow, the
inhaled oxygen concentration will vary, depending on the
pressure settings.
Refer to the oxygen suppliers instruction for use.
WARNING!
Oxygen promotes combustion processes.
Observe the valid rules for fire safety during use
of oxygen, to reduce the risk of fire. Keep the oxygen
instruments free from oils. All sources of ignition inclu-
ding smoking or smoking materials must be kept
away from the device and preferably out of the room.
WARNING!
If oxygen is used with this therapy device, the oxygen
flow must be turned off when the therapy device is
not operating.
■For therapy first switch on turbine and then switch
on oxygene.
■For ending therapy first turn off oxygene then turn off
turbine. Please program "Automatic OFF" as
described on pages 19 - 22.
■Before each use, check the proper fit of
the tube connections.

17
Respiration Therapy Device TREND 300
Cleaning Instructions, Changing of Filter
Daily Cleaning of the Breathing-Mask
■Disconnect the mask and exhalation port from the
therapy tube.
■Clean the breathing mask in accordance with the
instructions of the manufacturer of the mask.
Weekly Cleaning of the Therapy Tube
■Disconnect the tubing from the TREND 300 and the
mask and exhalation port.
■Before cleaning:
The measuring tube has to be closed tightly
with the stoppers.
■Use mild soap water and rinse the measuring tube
very carefully with clear water.
Air-dry the tube very well.
■After cleaning:
Remove the stoppers.
Changing the filter
■If the filter is dirty or the display reads
>FILTER < , the
filter cassette must be changed (see pages 26 and
27). Press on the underside of the unit on the filter
cassette protrusion and remove the cassette from
the top. (see picture)
■To reset the message please keep the input key
pressed while switching on the device.
Weekly cleaning of the device
■Unplug the AC power cord or switch off the main
switch.
■Clean the device with a cloth moistened with
soap water. Afterwards wipe the device dry.
Cleaning of the fixing straps (if necessary)
■Separate the fixing straps from the breathing-mask.
■Clean the fixing straps in accordance with the
instructions of the manufacturer of the straps.
A chemical or thermic desinfection of the device or parts
of the device by the user is not necessary.
Before change of patient the hygienical reprocessing of
the device has to be realised by the authorised dealer or
manufacturer.
Changing the filter cassette
Fernbedienung
Remote Control
DC IN 24 V
TREND
300

18
Respiration Therapy Device TREND 300
Alarm Functions of TREND 300
Power Failure
Probably you won't notice a power failure at night-time.
As a consequence you would permanently inhale the
exhausted air from the therapy tube. Therefore TREND
300 has an alarm mechanism responding if a power fai-
lure occurs at night-time or if a fuse becomes defective.
In this case an acoustic alarm would wake you up
so that you can take off the mask and breathe fresh
air. The alarm can be switched off by pressing the
control key (ON/OFF).
After the end of power failure the turbine of TREND
300 starts again automatically.
Mask Alarm
This alarm function is active only if the automatic
function is switched off. If at night-time the mask
slips down or the therapeutic tube is pulled off the
device won't switch off automatically but raise an
acoustic alarm. This additional safety function,
however, requires that the device is switched on and
off with the control key (ON/OFF) each morning and
evening.
Wake-up Alarm
For higher comfort TREND 300 has an integrated
alarm-clock. It can be activated and deactivated with
the program keys.
The alarm-clock raises alarm at the pre-set wake time.
If you press the control key once the alarm will stop
for the next five minutes and if you press it twice
the alarm will be totally switched off.
Check of the Power Failure Alarm:
Use the device with running turbine and pull out the AC
power plug or switch off the AC power switch. Now the
acoustic alarm should be occur. Check every month if
the acoustic signal lasts long enough (guide value 1 min).
After pressing the control key or switching on the power
supply the acoustic signal will stop.
Check of the Mask Alarm:
Use the device with running turbine and switch off
automatic function. Do not fix the mask to the face.
After 10 seconds an acoustic signal will occur.

19
Respiration Therapy Device TREND 300
For programming the functions of TREND 300
three keys are available:
= Input key
= Program key
= Program key
By holding the INPUT key pressed, you reach
the input mode after 1 second, and then
you see the menu of TREND 300 in the display.
The following 2 different kinds of menu can
be activated:
Standard-Menu Complete-Menu
WAKE TIME ........04:45 WAKE TIME .......04:45
TIME ........................ 16:24 TIME ..........................16:24
DATE ................. 12.11.02 DATE ....................12.11.02
EXIT MENU RAMP................0s/0min
AUTOMATIC...........OFF
(1) I-SET.......... ......12,0hPa (PIN-protected)
(2)
E-SET....... 8,0hPa (PIN-protected)
(3)
I-SLOPE.......... 0,5s (PIN-protected)
(4)
E-SLOPE........0,5s (PIN-protected)
TRIGGER ................ 3
MODE............BILEV-S
BRIGHTNESS ...100%
OPERATION......01937h
EXIT MENU!
The display always shows two lines. With the keys
and you can choose which lines are to be indica-
ted. A triangle symbol in front of a line means that this
line has been chosen.
Hints for (1) to (4):
T
he display first indicates the menu line (1). After adjust-
ment of I-Pressure the lines (2) to (4) will be indicated step
by step and can be set by the doctor.
Example: Setting alarm clock
Press key for 1 second. Display indicates:
WAKE TIME.......... 04:45
EXIT MENU!
After pressing key again the hour of the alarm time is
flashing and can be changed by the keys and .
Press key again for changing alarm minute according
to same procedure. To come back to the menu press
the key again. For leaving the menu select point
" EXIT MENU! ":
Functions of TREND 300
NOTE:
If you prefer instead of
the standard-menu the
complete-menu (or
reverse) contact your
dealer please.

20
Respiration Therapy Device TREND 300
Functions of TREND 300
WAKE TIME..........06:00
EXIT MENU!
Press Input key to leave the programming mode.
During standard operation the display indicates
date and time:
SA 28.FEB 12:42
The alarm clock can be activated or deactivated by the
keys and .
With the key the alarm clock can be switched on. For
controlling the programmed alarm time is indicated for a short
time in the display. After this a bell symbol shows that
the alarm clock is active.
SA 28.FEB  12:42
With the key the alarm clock can be switched off (e.g. on
Sunday). In this case the bell symbol is not indicated.
NOTE:
If there is no key pressed during programming for
30 seconds the programming mode will be left
automatically.
All functions are programmed in the same way:
Press for 1 s, and choose the line requested with the
keys and :
By pressing the key the following options can be
chosen:
WAKE TIME WAKE HOUR, WAKE MINUTE
TIME HOUR, MINUTE
DATE YEAR, MONTH, DAY, WEEKDAY
RAMP 1. mask test time: 0...90 s (in 5 s-steps)
2. softstart time: 0...60 min (in 1 min-steps)
AUTOMATIC ON, OFF
I-SET 1. PIN INPUT! following selection after:
2. 3,0 ... 18,0 hPa (in 0,5 hPa-steps)
E-SET 3,0 ... 18,0 hPa (in 0,5 hPa-steps)
I-SLOPE 0,0 ... 1,5 s (in 0,1 s-steps)
E-SLOPE 0,0 ... 1,5 s (in 0,1 s-steps)
TRIGGER 1 ... 5
MODE BILEV-S (only indicate, not selection possibility)
BRIGHTNESS 100%, 50%
COUNTER POWER, BLOWER, FILTER, THERAPY (time indicate in h)
EXIT MENU!
If you want to finish the programming, choose the menu
line “EXIT MENU!”and press key .