420S
GoodKnight® 420S
Patient Manual
Ref. : M-139DFU00-50 Revision D
Revision D
List of patient manual revisions
GoodKnight® 420S
The pages below are included in the GoodKnight® 420S patient manual
Ref. M-139DFU00-50 revision D.
Current pages
Revision
Cover
D
List of revisions
D
Table of contents
A
Introduction
B
1 – 10 ; 13 – 15 ; 19 – 21
A
11 – 12 ; 17 – 18
B
22
D
Reference or revision
Description
Date
M-139DFU00-50 revision A.
Creation of the manual
November 2001
Revision B.
Modification of the manual (English review)
February 2002
Revision C.
Modification of the manual (Manufacturer’s name)
July 2002
Revision D
Modification of the manual (change of power
supply)
August 2002
© 2001 Puritan Bennett
All rights reserved.
ii
GoodKnight 420S - Patient manual
Revision B
The Puritan Bennett GoodKnight 420S device (GK420S) is intended for the
treatment of patients suffering from Obstructive Sleep Apnoea Syndrome (OSAS).
The main characteristic of this pathology is the occurrence of multiple respiratory
events caused by closure of the upper airways, which disturb sleep. The
GoodKnight 420S delivers a Continuous Positive Airway Pressure (CPAP) which
prevents the upper airways from becoming obstructed and thus eliminates
respiratory events.
It is essential for you to understand the limitations on the use of this device.
Therefore, please read this manual carefully before using the GoodKnight 420S.
The information contained here is intended to help you to use this device under
optimum conditions of safety and operation. For any questions relative to the
equipment and its use, contact your medical team or your home service provider.
It is your doctor who has decided on the treatment of your illness. He/she has
prescribed the different parameters that the hospital or your home service provider
will programme completely. You must not therefore make any adjustment, except
under special circumstances.
®
GoodKnight is a registered trademark of Tyco Healthcare.
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GoodKnight 420S - Patient manual
Revision A
TABLE OF CONTENTS
BEFORE STARTING............................................................................................................................................................ 1
SAFETY INSTRUCTIONS...................................................................................................................................................... 1
INDICATIONS FOR USE ....................................................................................................................................................... 2
PRECAUTIONS FOR USE ..................................................................................................................................................... 2
CHECKING THE COMPONENTS ........................................................................................................................................... 3
DESCRIPTION OF THE DEVICE ...................................................................................................................................... 4
INSTALLATION.................................................................................................................................................................... 7
STANDARD INSTALLATION ................................................................................................................................................ 7
FITTING AN OXYGEN ADAPTOR .......................................................................................................................................... 8
INSTALLING A HUMIDIFIER ................................................................................................................................................ 8
INSTALLING FOR POWERING BY BATTERY .......................................................................................................................... 9
USE ........................................................................................................................................................................................ 11
STARTING TREATMENT.................................................................................................................................................... 11
STOPPING TREATMENT .................................................................................................................................................... 12
USING THE RAMP ............................................................................................................................................................ 12
ACCESSING INFORMATION ON THE DEVICE ...................................................................................................................... 14
SETTING THE TIME .......................................................................................................................................................... 15
MAINTENANCE ................................................................................................................................................................. 17
GOODKNIGHT 420S ........................................................................................................................................................ 17
AIR INLET FILTERS........................................................................................................................................................... 17
HOSE .............................................................................................................................................................................. 17
NASAL MASK .................................................................................................................................................................. 18
HUMIDIFIER .................................................................................................................................................................... 18
OXYGEN ADAPTOR .......................................................................................................................................................... 18
TROUBLE-SHOOTING...................................................................................................................................................... 19
TECHNICAL CHARACTERISTICS ................................................................................................................................ 21
DEVICE PERFORMANCES ................................................................................................................................................. 21
PHYSICAL CHARACTERISTICS .......................................................................................................................................... 21
TRANSPORT AND STORAGE CONDITIONS ......................................................................................................................... 21
CONDITIONS OF USE ........................................................................................................................................................ 21
ELECTRICAL CHARACTERISTICS OF THE POWER SUPPLY MODULE .................................................................................... 22
ELECTRICAL CHARACTERISTICS OF THE DEVICE .............................................................................................................. 22
SYMBOLS ........................................................................................................................................................................ 22
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GoodKnight 420S Patient manual
Revision A
BEFORE STARTING
Safety instructions
In order to ensure that you use your device safely and efficiently, please read all the information
contained in this operating manual. Please pay special attention to the passages preceded by the
following terms:
WARNING
Means that there is a danger of death or accident to you or others.
CAUTION
Means that there is a possibility of material damage to this or another device.
NOTE
Indicates special points aimed at more efficient and practical operation.
WARNINGS
1. Before any use, please check your GoodKnight 420S, as specified in the chapter “Checking the
components” on page 3.
2. In the event of additional oxygen supply, scrupulously observe the safety instructions for using
oxygen given in the chapter “Starting treatment” on page 11.
3. Only use the accessories that have been given to you by your service provider. Check that you do
have the instructions for using each of these accessories and read through them.
4. Use only the specific power supply module provided with the device.
5. Do not use the device in the presence of inflammable fumes.
6. Follow the device’s installation instructions as specified in this manual in the chapter
“Installation” on page 7. In particular, keep the machine away from any sources of water.
7. Do not accidentally or intentionally obstruct the air outlet or any other opening in the device or
the respiratory circuit.
8. Do not introduce liquids or objects into the air outlet.
9. You must contact the medical team if, when using the GoodKnight 420S, the following
symptoms appear: dryness in your airways or nose, skin sensitivity, running nose, earache, sinus
trouble, daytime drowsiness, mood changes, disorientation, irritability or memory loss.
10. Contact your home service provider in the event of any malfunction, whatever it may be.
Maintaining this equipment is solely the responsibility of the competent personnel. Do not
attempt to open the device.
GoodKnight 420S - Patient manual
1
Revision A
Indications for use
The GoodKnight 420S device is indicated for the treatment of obstructive respiratory sleep disorders,
particularly Obstructive Sleep Apnoea Syndrome (OSAS) in patients weighing 30 kg or more.
Precautions for use
The GoodKnight 420S device must be used with caution in patients with the following conditions. If
you are affected by one of these, contact your doctor at the beginning of your treatment.
·
Pneumothorax or pneumomediastinum
·
Severe bullous emphysema or previously complicated by pneumothorax
·
Massive epistaxis or previous massive epistaxis
·
Decompensated cardiac insufficiency or hypotension, especially in case of depletion in blood
volume or in case of cardiac rhythm disorder
·
Pneumoencephalus, traumatism or recent surgery with the after-effect of a cranio-nasopharyngeal
fistula
·
Acute sinusitis, otitis media or perforation of the tympanic membrane
·
Severe claustrophobia.
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GoodKnight 420S - Patient manual
Revision A
Checking the components
In order to be able to use the GoodKnight 420S with its specific electrical power supply, you must
have at least the following items:
·
A spiral hose enclosing a second small transparent hose
·
A nose-mask with all its fastening accessories as specified in the instructions for using this mask.
In addition to these accessories, your doctor could have prescribed the use of a humidifier. In this
case, check that you have all the accessories for this humidifier specified in its operating instructions.
In the case of an additional oxygen supply, you must also have an adaptor (only in the case where the
oxygen supply is not fitted directly onto the mask). See the chapter “Fitting an oxygen adaptor” on
page 8 of this manual.
Carefully check the device and each accessory. Check especially that the hoses are not damaged and
that the mask does not have any cracks or distortion in the cup and bellows (part of the mask coming
in contact with the face).
Carefully check the device and the specific power supply module and verify that there is no obvious
fault. Plug the device to the mains using the power supply module, referring to steps 4 and 5 of the
chapter “Standard installation” on page 7.
The type of the device is displayed for a few seconds then the following standby screen showing the
hour (the value displayed is given as example):
13:34
¹
Standby Indicator
(the two points are blinking).
Figure 1 – View of the display when the device is in standby mode
If the device was disconnected while it was running, the screen displays the pressure. The device
shows the same mode as at the time of the power supply cord disconnection and is set on the pressure
used at the time of disconnection.
Start the device by pressing the on/off button (Reference 4 in Figure 2 – Top view on page 5). The
turbine should start up and the noise should be regular.
Stop the device by pressing the on/off button and unplug the power supply lead from the mains.
WARNING
In the event of problems or if you discover any anomaly, do not start the treatment and contact
your home service provider.
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Revision A
DESCRIPTION OF THE DEVICE
The GoodKnight 420S is powered from an external power supply and equipped with specific
accessories. The device is described below.
See figures 2, 3 and 4 on page 5.
1.
Display
Allows you to visualise different information such as the delivered pressure, the settings of
the device or the hour. For further information, refer to the chapter “Accessing information on
the device” on page 14.
2.
Information access button
Allows you to access the different information concerning the device. For further details, refer
to the chapter “Accessing information on the device” on page 14.
3.
Ramp button
Used for starting or stopping the pressure increase ramp (for further information, refer to the
chapter “Using the ramp” on page 12). It is also used to decrease the value of the parameters
during the device settings.
4.
On/Off button
Used for switching the device on or off. It is also used to increase the value of the parameters
during the device settings.
5.
Pressure point
This is the connector onto which the small hose is connected. For further information, refer to
the chapter “Installation” on page 6.
6.
Outlet connector
This is the air outlet onto which the spiral hose is connected. For further information, refer to
the chapter “Installation” on page 7.
7.
Serial link connector
This connector is intended to be used solely by your doctor or your home service provider. Do
not connect it to anything.
8.
Supply connector
Used for powering the device from the specific power supply module or from an external
battery. For further information, refer to the chapter “Installing for powering by battery” on
page 9.
9.
Air inlet filters
These filters prevent dust from entering the device and the air flow. Please refer to the chapter
on “Maintenance” on page 17 for further information on the maintenance instructions for
these filters.
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GoodKnight 420S - Patient manual
Revision A
The items in the Figures below are described on page 4.
1
2
4
Figure 2 – Top view
3
6
5
Figure 3 – General view
7
8
9
GoodKnight 420S - Patient manual
Figure 4 – Rear view
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GoodKnight 420S - Patient manual
Revision A
INSTALLATION
This chapter shows you how to connect the different accessories and cables to your device. Before
starting the installation, please check your device and its accessories, by referring to the chapter on
“Checking the components” on page 3.
CAUTION
In general, place the device on a stable surface. Avoid placing it too near a wall or any other
obstacle which could hamper the intake of air into the machine.
Standard installation
1. Connect the spiral hose to the device. To do this, connect the small hose that emerges through
one of the large nozzles of the spiral hose, to the pressure point (Reference 5 in Figure 3 –
General view on page 5). Connect the large nozzle of the spiral hose onto the outlet connector of
the machine (Reference 6 in Figure 3 – General view on page 5).
Figure 5 – Connection of the spiral hose to the device
WARNING
Take care that the small hose is not twisted or bent.
2. Prepare the mask as described in its instructions for use.
3. Connect the mask to the spiral hose’s free nozzle.
4. Connect the cable of the power supply module to the supply connector located on the back of the
device (Reference 8 in Figure 4 – Rear view on page 5).
CAUTION
Use only the specific power supply module provided with the device.
5. Connect the plug of the power supply module to the mains. The type of the device is displayed
for a few seconds then the following standby screen showing the hours and the minutes:
8:22
¹
The two points are blinking.
6. The device is ready to operate. Please refer now to the chapter on “Use” on page 11.
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7
Revision A
Fitting an oxygen adaptor
Replace step 1 of the standard installation with the following step:
· Connect the oxygen adapter onto the device’s outlet connector and connect the other end of the
adapter onto the large nozzle of the spiral hose. Connect the small hose that emerges through one
of the spiral hose’s large nozzles to the pressure point (Reference 5 in Figure 3 – General view on
page 5).
Figure 6 – Connecting the oxygen adaptor to the device
You can then repeat steps 2 to 6 of the standard installation to continue installing the equipment.
WARNINGS
·
Always follow the instructions of the medical team or home service provider in the event of
using oxygen.
·
Do not smoke in the presence of oxygen.
·
Do not inject oxygen through the air inlet of the device.
·
Carefully follow the start-of-treatment and end-of-treatment steps described in the chapter
on “Use” on page 11.
CAUTION
If the supplemental oxygen flow rate is fixed, the inhaled oxygen concentration will vary,
depending on the pressure settings, patient breathing pattern, interface selection, and the leak
rate.
Installing a humidifier
Please refer to the instructions for using your humidifier for further information on preparing it and
on the safety precautions.
WARNING
The humidifier must be filled before being connected to the device.
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GoodKnight 420S - Patient manual
Revision A
Replace step 1 of the standard installation with the steps below:
1. Connect one of the nozzles of the small spiral hose onto the outlet connector of the device
(Reference 6 in Figure 3 – General view on page 5).
2. Connect the other nozzle of the small spiral hose onto one of the humidifier’s connectors.
Steps 1 and 2
Steps 3 and 4
Figure 7 – Connecting the humidifier to the device
3. Connect the small hose that emerges through one of large spiral hose’s nozzles to the pressure
point (Reference 5 in Figure 3 – General view on page 5).
4. Connect this same nozzle of the large spiral hose onto the humidifier’s second connector.
Figure 8 – View of the humidifier connected to the device
You can then resume with steps 2 to 6 of the standard installation to continue installing the
equipment.
Installing for powering by battery
The GoodKnight 420S can be powered by a 12-Volt battery by using a special cable provided for this
purpose.
CAUTION
· Do not use any battery power cable other than that supplied with the GoodKnight 420S.
There would be a risk of damaging the device and your battery.
· Only use 12-Volt DC sources and make the proper polarity connections (+ and -).
GoodKnight 420S - Patient manual
9
Revision A
For fitting the battery cable, replace steps 4 and 5 of the standard installation by the following steps:
1. Connect the battery power cable onto the supply connector at the back of the device (Reference 8
in Figure 4 – Rear view on page 5).
2. Connect the other end of the cable directly onto the battery.
NOTE
The GoodKnight 420S can use a lot of power. We advise you to use a fully charged battery.
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GoodKnight 420S - Patient manual
Revision B
USE
This chapter shows you how to use the device after installing it as described in the previous chapter.
It also shows you how to use the pressure increase (ramp) function and how to access information on
settings (you will not be able to alter these settings, but only view them).
WARNING
In the sections “Starting treatment” and “Stopping treatment” below, please follow the order
given scrupulously. If this order is not followed, it can cause an accident, especially where the
use of oxygen is concerned.
Starting treatment
Once the device has been installed in accordance with the directions given in the previous chapter,
please follow the instructions below to start treatment:
1. Put the nasal mask in place according to the instructions for its use. If a mask with exhalation
vent is used, it includes a hole by which the exhaled gases will be flushed and could not be
rebreathed. If a mask without exhalation vent is used, your doctor must provide you with a
™
Pirouette silent leak or equivalent allowing gases flushing as close as possible to the nose.
WARNING
The vent hole associated with the interface should never be blocked. This CPAP device is
intended to be used with interfaces (or connectors) that have vent holes to allow a
continuous flow of air out of the interface. When the CPAP device is turned on and is
functioning properly, fresh air from the CPAP device flushes the exhaled air out through the
interface vent hole. However, when the CPAP device is not operating, adequate fresh air
will not be provided through the interface, and exhaled air may be rebreathed. Rebreathing
exhaled air for longer than several minutes could, in some circumstances, lead to
suffocation.
2. Start the device by pressing the on/off button
.
Breathe normally. The display shows the pressure available in the mask as well as the operation
indicator (see Figure 9 – View of the display when the device is running).
10.0
cmH2O
0
Compliance operation indicator
Device operation indicator
- 1 : compliance is on
- 0 : compliance is off
Figure 9 – View of the display when the device is running
NOTES
·
The pressure unit displayed (hPa or cmH2O) can be modified by the Practitioner.
·
The compliance operation indicator is only displayed after 15 minutes operation of the
device.
3. If you are using a heated humidifier, turn it on according to the instructions for its use.
4. If you are using oxygen, open the flow now.
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Revision B
WARNINGS
·
When the device is in operation mode, check that it delivers an air flow. In the opposite,
stop it immediately and contact the service provider.
·
At lower CPAP pressures, the flow through the exhalation port may be inadequate to clear
all exhaled gas from the hose. Some rebreathing may occur.
Stopping treatment
When the device is in operation, please follow the instructions below to stop the treatment:
1. If you are using oxygen, stop the flow now.
2. If you are using a heated humidifier, turn it off as described in the instructions for its use.
3. Stop the device by pressing the on/off button
the following standby screen showing the hour:
. The machine returns to standby and displays
7:54
¹
4. Remove the nasal mask.
Using the ramp
First of all adjust the starting ramp pressure of your GoodKnight 420S device by observing the
following instructions:
NOTE
If the Ramp time is set to zero, this adjustment is not accessible.
The initial ramp pressure can be set to a value between 4 cmH2O and the pressure level prescribed by
your doctor. This function allows you to set the appropriate pressure level to enable you to fall
asleep.
To access the parameter setting menu, just press for a second the information access button shown in
the Figure 10 – View of the control buttons, whether the device is on standby or in operation.
Increases the starting
ramp pressure
Reduces the starting ramp
pressure
Information access
button
Figure 10 – View of the control buttons
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GoodKnight 420S - Manuel patient
Revision A
You have to press this button the number of times required for displaying the screen below:
vP
4.0
cmH2O
The pressure value can then be changed by using the on/off
and ramp
keys.
The ramp function enables you to make the rise in pressure progressive. Thus, the pressure level is
low at the start of the night to help you to fall asleep. You can also use this function if you have to get
up during the night and have difficulty going back to sleep. The pressure rise time up to the final
pressure is prescribed by your medical team and the setting carried out by your service provider is
between 0 (no progressive rise) and 30 minutes in 5-minute increments. The ramp may have been
preset to 0 according to the prescription provided by your medical team. In this case, the ramp
function is disabled and pressing the ramp button on the front panel of the machine has no effect
(refer to Reference 3 in Figure 2 – Top view on page 5).
1. To start the ramp, just press the ramp button when the device is on. The pressure will fall to a
low value, then increase progressively up to the prescribed pressure level, so as not to wake you.
The device will run normally, delivering a treatment pressure throughout the night unless you
press the ramp button again, in which case the pressure will drop down again to the ramp level
that you have selected.
2. To end the ramp, press the ramp button again and the function will be disabled. It is possible to
reset the ramp time by reactivating the ramp function (the ramp indicator lights up when this is
activated).
Pressure
Pmax
Pressure level
Starting ramp pressure
Pmin
Pressure rise time
Pressure rise time
Time
Resetting the ramp
Start-up and RAMP
function active
Figure 11 – Changes in pressure over time
when activating the ramp function
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Revision A
Accessing information on the device
The display enables you to view the different information on the settings of the GoodKnight 420S
(refer to Reference 1 in Figure 2 – Top view on page 5).
The setting information is accessible whether the device is on standby or in operation. For this, just
press the information access button for one second (Reference 2 in Figure 2 – Top view on page 5).
With each additional key press, you access further data.
NOTE
In the following screens, the device is shown in operation mode and all the values are given as
examples.
Press for one
second on
10.0 cmH O
2
P
Press
prescribed pressure when the device is running).
10
Press
min
7.0 cmH O
2
P
· The pressure level set by the doctor (equivalent to the
· The ramp time set by the doctor (period of time over which
the pressure gradually increases from the starting ramp
pressure to the pressure level).
· The starting ramp pressure (pressure level at the beginning
of ramp); this parameter is adjustable and visible only if the
ramp time is other than 0.
The symbol used shows that the parameter is adjustable. You
can increase or reduce the value displayed by using the on/off
or ramp keys. For further details, refer to the chapter “Using
the ramp” on page 12.
Press
Press
Press
Id
215 h
· Hour meter value (device operating time).
155
· Compliance meter value (time during which the patient has
*.*
h
breathed with the device).
· The GoodKnight 420S on-board software version.
Press the information access button again to exit the parameter setting menu.
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GoodKnight 420S - Patient manual
Revision A
In this case, the display again shows one of the following two screens indicating the status of your
device (the values are given as examples).
8:22
¹
10.0 cmH O
2
1
The device is on standby.
The device is running.
NOTE
Exit from the parameter setting menu takes place automatically when you do not press any key for 30
seconds.
Setting the time
You can set the time only when the device is on standby. To do so, just press the ramp button for one
second (see Reference 3 in Figure 2 – Top view on page 5), then press the on/off button at the same
time (see Reference 4 in Figure 2 – Top view on page 5). If you release the pressure on the buttons,
the symbol of adjustment appears under the hour, as shown on the screen hereafter:
11:34
h
¹
The letter h indicating the hour blinks, you can then set it using the ramp and on/off keys.
To set the minutes, just press the information access button, the symbol of minutes blinks in its turn
and you can set them by following the same procedure as for the hour.
Press the information access button again to exit the menu.
NOTE
Exit from the parameter setting menu takes place automatically when you do not press any key for 30
seconds.
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Revision B
MAINTENANCE
In order to ensure that you use your GoodKnight 420S safely and efficiently, please observe the
maintenance instructions specified below.
GoodKnight 420S
The rigid plastic case protecting the internal components of the device does not require any special
maintenance. When it proves necessary, clean the device using a rag moistened with warm soapy
water. Dry the machine thoroughly.
WARNINGS
·
Always unplug the device before cleaning it.
·
Do not use a spray; because residues may lodge in the air outlet, the foam filter or inside
the device. This could cause irritation of the airways due to chemical residues.
Air inlet filters
Change the filters as soon as they are torn or dirty (refer to Reference 9 in Figure 4 – Rear view on
page 5).
Clean the outer foam filter at least once a week, or more often if necessary, in the following way:
1. Wash the filter with warm soapy water.
2. Rinse thoroughly so as to remove all traces of soap.
3. Dry it by pressing it sandwiched in a terry towel.
4. Leave it to dry completely before replacing it.
5. Replace the filter at the back of the device.
The white fabric filter, which is optional, cannot be washed; it must be changed once a month at
least, or more often if it is visibly clogged.
Hose
Please refer to the instructions for use which were sent to you with the hose.
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17
Revision B
Nasal mask
Please refer to the instructions for use which were sent to you with your nasal mask.
Humidifier
Please refer to the instructions for use which were sent to you with your humidifier.
Oxygen adaptor
Please refer to the instructions for use which were sent to you with the oxygen adaptor.
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GoodKnight 420S - Patient manual
Revision A
TROUBLE-SHOOTING
PROBLEM
PROBABLE CAUSE
SUGGESTION
Discomfort due to a
feeling
of
the
pressure being too
high.
Pressure of the GoodKnight
420S.
The device is not
delivering the correct
pressure (display).
The pressure port tube is
not connected.
Moisture is getting into the
pressure port tube.
Adapting to the nasal pressure takes a
while. Try to use the pressure increase ramp
when you go to sleep (see the chapter
“Using the ramp” page 12). Relax and
breathe slowly through your nose.
If you feel that the pressure has changed,
contact your service provider to have the
equipment checked.
Check that the small pressure port tube is
properly connected to the device.
Dry the small tube. To do this, connect the
spiral hose onto the GoodKnight 420S,
leaving the small tube disconnected, block
up the large hose with your hand, turn the
device on. It stops at the end of 30 seconds.
Repeat if necessary.
Check whether the ramp indicator is
displayed. Press the ramp button to cancel
the function (see Reference 3 in Figure 3 –
General view page 5).
Humidify the air in the room using a
humidifier. Ask the medical-technical team
to obtain a humidifier.
Raise the temperature of the room or place
the hose under the blankets to reduce heat
loss.
The ramp is activated.
Dry or irritated nose
or throat.
The air is too dry.
Cold nose.
The room temperature is
too low.
Running nose.
Reaction to the air flow and
pressure.
Break off the treatment. Contact the
attending physician.
The
device
is
delivering air that is
too hot.
The air inlet filters may be
dirty. The air inlet is
clogged.
Clean or replace the filters as the case may
be (refer to the chapter on "Maintenance"
on page 17). Move any linen, bedding or
clothing away from the GK420S.
Lower the thermostat for the room. Make
sure that the GK420S is away from any heat
source.
Remove the hose from under the blankets.
The room temperature is
too high.
Pains in your nose,
sinuses or ears.
Sinus infection or nasal
congestion.
Contact
the
immediately.
Dryness or irritation
of the eyes.
Air leak around the mask.
Reposition the mask. Ask the attending
doctor or the service provider to try
different sizes of mask.
GoodKnight 420S - Patient manual
attending
physician
19
Revision A
PROBLEM
PROBABLE CAUSE
SUGGESTION
Redness of the skin
area in contact with
the mask.
The harness is too tight or
too small.
Adjust the harness. Contact the attending
physician or the service provider to try on
masks of different sizes.
Stop using the mask. Contact the attending
physician or the service provider.
Recurrence of the
first symptoms of
sleep apnoea syndrome.
The GoodKnight 420S is
not set to the correct
pressure or is not operating
correctly.
Your physical condition or
your pressure needs have
changed.
Ask the service provider to check the
operation of the GK420S.
The power supply module
is not properly connected.
Check the connections between the power
supply module, the GK420S and the mains
socket.
Use another appliance (e.g.: lamp, radio
etc.) to check that the a.c. power supply is
present at the socket.
Contact the service provider.
The
GoodKnight
420S does not come
on (no display).
Allergic reaction to the
components of the mask.
No mains power.
The fuse of the device has
blown.
Contact the attending physician.
The
GoodKnight
420S is not running
properly and seems to
be
subject
to
interference.
Excessive electro-magnetic
interference.
Move the device away from sources of
interference such as halogen lamps, portable
telephones, etc.
In 01 is displayed.
A major leak (disconnection) has been detected
in the patient circuit for
more than 30 seconds.
In 02 is displayed.
Excess pressure has been
detected by the device for
more than 10 seconds.
In 03 is displayed.
Reduction of the power
supply voltage.
Er XX appears on the
display.
The device has detected an
operating fault.
This message disappears as soon as the
mask is connected and you have breathed 3
or 4 times, or if you press the on/off button
twice. Otherwise, check the patient circuit
connection.
Check the connection of the small pressure
point hose. Check that it is not trapped and
that it is properly clean and dry (see the
instructions for use of the patient circuit).
Check the connections between the power
supply module, the device and the mains
socket. Unplug the supply module, then
connect it again to the mains. If the problem
remains, contact the service provider.
Check the battery and replace it, if
necessary. If the problem remains, contact
the service provider.
Contact the service provider.
(XX = 2 digits).
20
GoodKnight 420S - Patient manual
Revision A
TECHNICAL CHARACTERISTICS
Device performances
Pressure range of the GoodKnight 420S:
4 cmH2O to 20 cmH2O ± 1 cmH2O
adjustable by increments of 0,5 cmH2O
Maximum pressure at the connection opening:
24 cmH2O
patient side in condition of first defect
Ramp time:
0 to 30 minutes ± 1 minute
device adjustable by increments of 5 minutes
Sound level measured in accordance with:
25,1 dBA
PrEN ISO 17510-1 :2001
Maximum sound level:
31 dBA at 10 cmH2O
Lifetime of the battery soldered onto the board:
> 5 years
Physical characteristics
Dimensions (W x H x L ):
142 x 77 x 194 mm (without power supply)
Weight:
0,760 kg (without power supply module)
Transport and storage conditions
Temperature:
-20°C to +60°C
Relative humidity:
up to 95 % without condensation
Relative pressure range:
500 hPa to 1060 hPa
Conditions of use
Temperature:
+5°C to +40°C
Relative humidity:
between 10 % and 95 % without condensation
Relative pressure range:
700 hPa to 1060 hPa
GoodKnight 420S - Patient manual
21
Revision D
Electrical characteristics of the power supply module
Class II power supply:
Input voltage: 100 – 240 VAC (-15%, +10%), 50 / 60 Hz (±1 Hz)
Output voltage: 13 V – 1,85 A.
CAUTION
·
Use only the specific power supply Egston N2GFMW 24 W 13 V provided with the device.
·
The power supply module Egston N2GFMW 24 W 13 V is not intended to be repaired. In
case of failure, please contact your service provider to have the module replaced.
Electrical characteristics of the device
Input voltage:
13 V – 1,85 A.
Maximum power consumed : 20 W (without humidifier)
Current consumed at 20 cmH2O with a 4 mm leak: 0,750 A.
Direct current
13 V battery connector
Symbols
On/off
Information access
Ramp
PC connection
Increases setting values
Reduces setting values
Output connector
Device protected against the vertical falls of water drops.
Type B device
Consult the instructions for use before using this device.
0459
Device complies with the requirements of the directive 93/42/CEE relating to
medical appliances.
For USA only:
Federal law restricts this device for sale by or on the order of a physician.
22
GoodKnight 420S - Patient manual
Details of your Service Provider
Made in France by :
Mallinckrodt Développement France
Parc d’activités du bois St-Julien
10, Allée Pelletier-Doisy
F – 54601 VILLERS-LES-NANCY CEDEX
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