Breas Z1 User manual

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Contents
Welcome to Your Z1 CPAP System.................................................................2
Owner/User Responsibility......................................................................2
Physician Responsibility.........................................................................2
Replacement Z1 Parts and Supplies .............................................................2
Terms Used in this User Guide...................................................................3
Medical Information ..............................................................................3
Z1 Warnings and Cautions ........................................................................4
Battery Warnings and Cautions....................................................................7
Getting to Know Your Z1 System ..................................................................9
Package Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Z1CPAP Device ................................................................................10
Tube Adapter ..................................................................................10
CPAP Tube .....................................................................................10
End Cap .......................................................................................10
Filter ..........................................................................................10
USB Micro Cable ..............................................................................10
PowerShell (Optional Accessory) ...............................................................10
Initial Set Up .....................................................................................11
Unpacking the Z1 Box .........................................................................11
Assembling and Powering Up..................................................................12
Using Your Z1 ...................................................................................14
LCD Display....................................................................................14
Starting and Stopping Treatment ..............................................................16
Programming Treatment Pressure ..............................................................16
Programming Ramp Mode.....................................................................17
User Software..................................................................................17
USB Firmware Upgrade ........................................................................17
Charging the Battery (PowerShell Only) ........................................................19
Care .............................................................................................19
Inspections ....................................................................................19
CPAP Tube Replacement .......................................................................20
Reminder Alert (Air Leak Detection) ............................................................21
Fault Conditions ...............................................................................21
Troubleshooting ...............................................................................22
Guidance and Manufacturer’s Declaration Electromagnetic Emissions & Immunity................24
Technical Specications..........................................................................28
Performance Specications ....................................................................28
PowerShell Battery Specications ..............................................................29
Symbol Explanation..............................................................................30
The following symbols may appear on your device, power supply unit, or packaging..............30
Servicing ........................................................................................31
Limited Warranty.................................................................................31
Replacement Z1 Parts and Supplies ..............................................................32
Contact Information .............................................................................32
Z1™, Z-Breathe™ and PowerShell™ are trademarks of Human Design Medical, LLC.
US Patent Pending. © Copyright 2014, Breas Medical AB. All rights reserved.

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Welcome to Your Z1 CPAP System
Thank you for choosing the Z1 CPAP System from Breas.
The Z1 is specially designed with these features:
• Z-Breathe™ – the Z1 automatically reduces the air pressure in the mask to relieve
pressure when you exhale and to level out the pressure dierences in your natural
breathing pattern.
• Leak Compensation – the Z1 automatically compensates for minor air leakage
helping ensure the proper treatment pressure is maintained.
• Auto Altitude Adjustment – the Z1 adjusts to altitudes up to 2400meters above sea
level.
• Air Travel – The Z1 adjusts to an airplane’s cabin pressure and is approved for use on
airplanes.
• Upgradable Operating System– the Z1 rmware and software can be easily
updated via the USB Cable and your computer.
This User Guide will help you take advantage of the features and capabilities of this amazing
portable CPAP device. Please read this User Guide carefully before using your Z1.
Owner/User Responsibility
The owner/user of the Z1 CPAP System is responsible for reading and understanding this User
Guide. The user is responsible for any injury or damage that results from:
• Operation of the Z1 other than in accordance with the operating instructions
contained in the User Guide supplied.
• Unauthorized maintenance or modications to the device or attached accessories.
Physician Responsibility
The physician is responsible for explaining contraindications and instructions for use to the
patients/users.
Replacement Z1 Parts and Supplies
Use only genuine Z1 replacement lters, parts and supplies. To purchase replacement lters,
parts and supplies visit www.breas.com. Use of unauthorized lters, parts or replacement
supplies can damage the device and void the warranty.

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Terms Used in this User Guide
This User Guide contains special terms and icons that appear in the text to draw your attention to
specic and important information.
WARNING alerts you to possible injury or hazard.
CAUTION explains special measures for the safe and eective use of the
device.
NOTE is an informative or helpful note.
Medical Information
Indications for Use
Your Z1 CPAP System is a single user, reusable device that provides continuous positive airway
pressure (CPAP) to support treatment of adults weighing over 30kg (66lbs) with obstructive sleep
apnea (OSA).
Contraindications
Positive airway pressure therapy may be contraindicated in some individuals with the following
pre-existing conditions:
• Severe bullous lung disease
• Pneumothorax
• Pathologically low blood pressure
• Dehydration
• Cerebrospinal uid leak, recent cranial surgery, or trauma.
Adverse Eects
Users should report unusual chest pain, severe headache, or increased breathlessness to
their prescribing physician. An acute upper respiratory tract infection may require temporary
discontinuation of treatment.
The following side eects may arise during the course of therapy with CPAP devices:
• Drying of the nose, mouth, or throat
• Eye irritation
• Nosebleed
• Bloating
• Skin rashes
• Ear or sinus discomfort.

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Z1 Warnings and Cautions
WARNINGS:
• Read the entire User Guide before using your Z1. Consult your health care provider
if there is any part of this User Guide you do not understand.
• Use your Z1 and its accessories only for their intended use as described in this User
Guide and as directed by your physician, clinician or health care provider.
• The Z1 is not approved for use with oxygen. Do not use supplemental oxygen or
any other type of supplementary gas with your Z1. Do not connect supplementary
oxygen or other gas to any accessory or patient interface which is connected to
your Z1.
• If you notice any unexplained changes in the performance of your Z1 or your Z1
is making unusual or harsh sounds, or if the Z1 or Power Supply are dropped or
mishandled, discontinue use and contact Breas or your health care provider.
• If your Z1, Power Supply, PowerShell or Battery is dropped or mishandled, or if
water is spilled into an enclosure, or if an enclosure is broken, discontinue use and
contact Breas or your health care provider.
• A mask is not provided. Your Z1 should only be used with masks and connectors
recommended by your physician, clinician, respiratory therapist or health care
provider.
• Your Z1 is intended to be used with CPAP masks (or connectors) which have vent
holes to allow continuous ow of air out of the mask. When your Z1 is turned on
and functioning properly, new air from the Z1 ushes the exhaled air out through
the mask vent holes. However, when the Z1 is not operating properly (e.g., at low
pressure) or the Z1 is o, insucient fresh air may be provided through the mask
and the exhaled air may be rebreathed. Rebreathing exhaled air for longer than
several minutes can, in some circumstances, lead to suocation. This applies to
most CPAP devices. Your health care provider will recommend a mask and air
tubing to suit your needs. The Z1 supports several CPAP mask types including nasal
masks, full face masks, and nasal prongs that meet the ISO 17510-2 standard.
• Do not use your Z1 with a mask unless the Z1 is turned on. Once the mask is tted,
conrm that air is owing from your Z1.
• Do not block the vent hole or holes in the mask. Follow the mask manufacturer’s
instructions for proper use of the mask.
• In the event of a power failure or machine malfunction, remove the mask
immediately.
• At low pressures some exhaled gases may remain in the mask.
• Electrocution Hazard – Your Z1 is an electrical device, and as such, you should
not immerse your Z1, Power Supply, PowerShell or Battery in water. Always unplug
your Z1 and its accessories before cleaning (and clean only as instructed in this User
Guide) and make sure your Z1 and its accessories are dry before plugging back in.

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WARNINGS:
• Before use, make sure the power cord and plug are in good condition and that the
cord is not damaged.
• Do not use bleach, chlorine, alcohol, or aromatic-based solutions, moisturizing or
antibacterial soaps or scented oils to clean your Z1, Power Supply, PowerShell or
Battery. These solutions may create a shock hazard, cause damage and reduce the
life of these items.
• Explosion Hazard — Do not use or store your Z1, Power Supply, PowerShell or
Battery in the vicinity of ammable anesthetics or oxygen.
• Do not use your Z1 near toxic or harmful vapors.
• Do not drop your Z1 or any of its accessories or expose it to any crushing forces.
Should your Z1 be dropped and fail to operate properly, contact Breas or your
health care provider before using the Z1 for treatment.
• Do not insert any object into any tubing or opening of your Z1 except as described
in this User Guide.
• Do not operate your Z1 in any area which may block its air intake. Blocking the
CPAP Tube and/or air inlet of your Z1 while in operation could lead to overheating
of the Z1.
• If you put the Z1 on the oor, make sure the area is free from dust and clear of
bedding, clothes or other objects that could block the air inlet or cover the Power
Supply unit.
• Only store or transport the Z1 and accessories within the storage and transport
temperature, humidity and altitude conditions specied in the Technical
Specications section of this User Guide.
• Do not operate your Z1, Power Supply, PowerShell or Battery in an area which may
cause overheating.
• Do not cover the Power Supply, PowerShell or Battery with any object or material
which would cause them to overheat.
• Keep the power cord, Power Supply, Battery and Z1 away from hot or ammable
surfaces, gases or materials.
• Do not open your Z1 or tamper with its accessories. There are no user serviceable
parts inside. Repairs and servicing should only be performed by an authorized
Breas service agent.
• Only power the Z1 with the Z1 Power Supply (AC-to-DC power adapter) or the
optional Z1 PowerShell with Breas Medical Battery. Do not use any other AC
adapters, batteries, or other power sources to power the Z1. Do not use the Z1
Power Supply, PowerShell or Battery to power any device other than the Z1.
• Your Z1 should only be used with standard CPAP air tubing as recommended by
your physician, clinician or health care provider.
• Do not leave long lengths of air tubing around the top of your bed. The tube could
twist around your head or neck while you are sleeping.

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WARNINGS:
• Do not connect or insert any device, cable or articles into the Micro USB or Micro
SD ports of your Z1 except as described in this User Guide. Connecting other
devices could result in injury to you or damage to the Z1 and void the warranty.
• Do not locate your Z1 in an unapproved place or where the air intake can be
blocked during treatment. This will lead to overheating of the Z1. If a blocked intake
should occur during operation, the unit may stop supplying pressurized air and
cause a fault condition. Refer to“Troubleshooting”in this User Guide to interpret
this fault and instructions for corrective action.
• The Z1 is designed to deliver pressures from 4 to 20cmH2O. In the unlikely event of
certain fault conditions, pressures of up to 30cmH2O are possible.
• Blocking the CPAP Tube while in operation could lead to overheating of the Z1.
• In the clinical environment, any personal computer that is used with your CPAP
system must be at least 1.5meters (5ft) away from, or at least 2.5meters (8ft)
above, the patient. It must also comply with the relevant test standard. For personal
computers the international standard is IEC 60950 or equivalent.
CAUTIONS:
• Be careful not to place your Z1 where it can be bumped or where someone is likely
to trip over the power cord.
• Make sure your Z1, Power Supply, PowerShell and Battery are kept clean, dry, and
free of dust.
• Always make sure the power cord and plugs are in good condition and the
equipment is not damaged before use.
• Make sure the area around your Z1 and accessories is dry and clean.
• During partial (below rated minimum voltage) or total power failure, therapy
pressures will not be delivered. When power is restored, your Z1 will enter standby
mode and all prior settings will be retained in memory.
• Follow the storage and cleaning instructions provided with your CPAP Tube and
mask.
• The air lter should be changed at intervals specied in this User Guide.
Accumulation of ltered particles over time can reduce the eciency and shorten
the life of any CPAP device, including the Z1. Replacement lters are available at
www.breas.com.
• Do not wash the air lter. The air lter is not washable or reusable.
• The End Cap protects the Z1 in the event of a minor collision. Always ensure that
the End Cap is securely tted in accordance with instructions at all times. The Z1
may not operate if the End Cap is not properly installed.

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CAUTIONS:
• The temperature of the airow for breathing produced by CPAP devices can be higher
than the temperature of the room. This is true of all CPAP devices. Caution should be
exercised when using your Z1 at room temperatures warmer than 32˚C (90˚F).
• Only operate the Z1 and accessories within the operating temperature, humidity and
altitude conditions specied in the Technical Specications section of this User Guide.
• Only store or transport the Z1 and accessories within the storage and transport
temperature, humidity and altitude conditions specied in the Technical Specications
section of this User Guide.
• Damage to the CPAP Tube may result in air leaks. If this occurs, stop using the damaged
CPAP Tube and replace immediately.
Battery Warnings and Cautions
The PowerShell comes with a removable Lithium Ion Battery. Careful attention must be paid to
the warnings and cautions described below relating to the Battery. Misusing the Battery may
cause the Battery to get hot, rupture, ignite and cause serious injury.
WARNINGS:
• Do not place the Battery in re or heat the Battery.
• Do not install the Battery backwards so that the polarity is reversed.
• Do not connect the positive terminal and the negative terminal of the Battery to each
other with any metal object (such as wire).
• Do not carry or store the Battery together with necklaces, hairpins, or other metal objects.
• Do not pierce the Battery with nails, strike the Battery with a hammer, step on the Battery
or otherwise subject it to strong impacts or shocks.
• Do not solder onto the Battery.
• Do not expose the Battery to water or salt water, or allow the Battery to get wet.
• Do not disassemble or modify the Battery. The Battery contains safety and protection
devices which, if damaged, may cause the Battery to generate heat, rupture or ignite.
• Do not place the Battery on or near res, stoves or other high-temperature locations.
Do not place the Battery in direct sunlight, or use or store the Battery inside cars in hot
weather. Doing so may cause the Battery to generate heat, rupture or ignite. Using the
Battery in this manner may also result in a loss of performance and a shortened life
expectancy.
• Immediately discontinue use of the Battery if, while using, charging or storing the Battery,
the Battery emits an unusual smell, feels hot, changes color, changes shape or appears
abnormal in any other way. Contact Breas or your health care provider if any of these
problems are observed.

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WARNINGS:
• Do not place the Battery in microwave ovens, high-pressure containers, or on induction
cookware.
• In the event that the Battery leaks and the uid gets into one’s eye, do not rub the eye.
Rinse well with water and immediately seek medical care. If left untreated the battery
uid could cause damage to the eye.
• Only charge the Battery with the supplied Z1 PowerShell and the supplied Z1 Power
Supply. Do not use any other removeable battery charger, AC adapter, or other device to
charge the Battery.
• Do not attach the Battery directly to a vehicle cigarette lighter or to the Power Supply
plug.
• Do not continue charging the Battery if it does not recharge within the specied
charging time. Doing so may cause the Battery to become hot, rupture or ignite.
• Remove the Battery from the PowerShell if the Z1 is not likely to be used for some time.
Do not use the Battery to power any device other than the Z1.
• Only use or charge the Battery within the operating temperature, humidity and altitude
conditions specied in the Technical Specications section of this User Guide.
• Only store or transport the Battery within the storage and transport temperature and
humidity conditions specied in the Technical Specications section of this User Guide.
CAUTIONS:
• When the Battery is worn out, insulate the terminals with adhesive tape or similar
materials before disposal.

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Getting to Know Your Z1 System
Package Contents
Description Z1 Base Model
Z1
Unplugged
Z1 CPAP Device ✔ ✔
Power Supply with Power Cord ✔ ✔
USB A to Micro B Cable ✔ ✔
CPAP Tube Adapter ✔ ✔
CPAP Tube ✔ ✔
End Cap ✔ ✔
Filter ✔ ✔
Heat/Moisture Exchange Unit (HME) ✔ ✔
Z1 CPAP Getting Started Guide ✔ ✔
User Guide ✔ ✔
Overnight Battery ✔
Battery Shuttle ✔
PowerShell ✔
PowerShell Getting Started Guide ✔

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Z1 CPAP Device
The Z1 supplies continuous positive airway pressure and can be programmed to t the patient’s
prescriptive needs.
Power Supply (AC to DC Power Adapter)
The Power Supply provides power to the Z1. It takes AC power (voltage ranging from
100-240volts) from a wall outlet and converts it to DC voltage to power the Z1. The Power Supply
can be used with international power sources provided the appropriate plug adapter is used.
Tube Adapter
The Tube Adapter attaches the CPAP Tube to the Z1.
CPAP Tube
The Z1 System is provided with a CPAP Tube. The CPAP Tube connects the Z1 to your mask. Always
consult with your physician or health care provider regarding the selection of tubing for your
treatment. Follow the instructions provided with the tubing. To purchase replacement tubing visit
www.breas.com.
End Cap
The End Cap attaches to the air intake end of the Z1 and houses the Filter. For proper operation of
the Z1, the Filter should be replaced monthly or more often if necessary.
Filter
The Z1 uses a specially designed lter. The material has been specically chosen for the Z1 and
has been designed to be much larger than other CPAP lters. The unique shape of the lter ts
into the End Cap of the Z1, which was designed to allow for more eective lter surface area.
NOTE: To purchase replacement Filters visit www.breas.com.
USB Micro Cable
The USB Cable allows the Z1 to communicate with a computer to collect and view user data.
PowerShell (Optional Accessory)
The PowerShell houses both the Z1 and the Battery which allows temporary usage of the Z1
without the Power Supply. To purchase the PowerShell visit www.breas.com.

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Initial Set Up
Unpacking the Z1 Box
You will need to perform a few minor setup steps before using your new Z1. The instructions
below will guide you through the setup process. Some of the steps outlined below may have
been performed by your health care provider prior to delivering the Z1 to you. If you have any
questions or problems as you go through the setup process, please contact Breas or your health
care provider for assistance. Breas wants your user experience with the Z1 to be trouble and
frustration free.
1. Carefully remove the contents of the box.
2. Some of the Z1 components have their own packaging material. Remove this material
carefully. Avoid using anything sharp when opening the packaging.
3. Carefully inspect all contents against the Package Contents list on page 9 to
assure all components are present. Keep in mind that your health care provider might
have completed some of the setup steps prior to delivery, so if a component appears
to be missing, check to see if it has already been connected. Also inspect all contents
to ensure there is no obvious or visible damage or defects. If you have any concerns
or questions, contact Breas or your health care provider before use.
4. Place all the components in an area where you can easily access the Z1 for set up and
programming.
WARNING: Do not use this product if you have any concerns about the
condition of the contents or if there are any missing parts.
The contents of the Z1 box includes the following:
Z1 Base Model
Z1 CPAP
Filter
CPAP Tube
AC DC Adapter
Power Cord
Tube Adapter
USB Cable

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Z1 Unplugged
Includes everything that comes with the Z1 Base Model, plus:
Assembling and Powering Up
Filter and End Cap
1. Remove the Filter from its packaging.
2. Insert the Filter into the End Cap, aligning the arched
side of the Filter with the top of the End Cap.
3. Ensure the Filter covers all holes in the End Cap, so
that all air entering the Z1 passes through the Filter
and no air bypasses the Filter.
4. Press the End Cap onto the Z1. (Figure 1)
NOTE: To remove the End Cap, squeeze
rmly on the sides of the End Cap and pull it
away from the Z1.
Tube Adapter, CPAP Tube and Mask
1. Connect one end of the CPAP Tube to the round end
of the Tube Adapter then insert the other end of the
Tube Adapter into the outlet of the Z1. (Figure 2)
2. Connect the other end of the CPAP Tube to the mask.
3. Ensure all connections are tight to avoid air leaks.
(Figure 3)
PowerShell
Battery Shuttle and
Overnight Battery
Figure 1
Figure 2
Figure 3

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Power Supply
WARNING: The Z1 must only be used
with the Z1 Power Supply (or the optional Z1
PowerShell with Breas Battery). DO NOT use any
other power source with the Z1.
CAUTION: Make sure the AC power cord
ISNOT plugged into an AC power outlet before
continuing to the next step.
1. Plug the AC power cord into the AC Adapter.
2. Plug the AC power cord into a wall outlet.
3. Plug the AC Adapter into the Z1. (Figure 4)
4. The Z1 will power up and cycle through a series of
startup displays.
5. After about 10 seconds, the Z1 will enter standby
mode. The display will read 0.0. (Figure 5)
NOTE: The Z1 display will be active whenever
the device is receiving power.
PowerShell and Battery
(Available Separately or as Part of Z1 Unplugged)
WARNING: The Z1 must only be used with
the optional Z1 PowerShell with Breas Battery
(or the Z1 Power Supply). DO NOT use any other
power source with the Z1.
1. Slide the Battery with the attached Shuttle into the
lower bay of the PowerShell until the Shuttle clicks
into place. (Figure 6)
NOTE: The Battery can be removed from the
PowerShell by pressing the two blue buttons on
the Battery Shuttle and sliding the Battery out.
2. Slide the Z1 all the way into the upper bay of the
PowerShell until you hear a“click” sound, indicating
the Z1 has locked into place. (Figure 7)
CAUTION: Insert the Z1 carefully ensuring
the power barrel connector slides into the power
input on the Z1.
NOTE: The Z1 can be removed from the
PowerShell by pressing the two [ ] symbols on
the sides of the PowerShell and sliding the Z1
out.
Figure 4
Figure 5
Figure 6
Figure 7

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3. The Z1 will power up and cycle through a series of
startup displays.
4. After about 10 seconds, the Z1 will enter standby
mode. The display will read 0.0. (Figure 8)
NOTE: Remove the Battery from the PowerShell when the Z1 is not in use, unless
the Power Supply is plugged into the PowerShell to charge the Battery. Otherwise
the Z1 and PowerShell will drain the battery completely within 2-3 days.
Using Your Z1
LCD Display
Treatment Pressure Display
The current treatment pressure is shown on the LCD display. Once set, the prescribed treatment
pressure will be retained in the Z1’s memory even during loss of power. For example, a treatment
pressure setting of 10.0 cmH2O is displayed in Figure 9.
Ramp Progress & Ramp Time Remaining Indicators
Ramp Mode allows you to gradually acclimate to the prescribed treatment pressure. Ramp Mode
gradually increases the pressure from a low initial starting pressure to the prescribed treatment
pressure over a programmed interval of time. See “Programming Ramp Mode”.
If you program the Z1 for Ramp Mode, the Ramp Progress and Ramp Time Remaining indicators
will appear on the LCD display. For example, Figure 9 indicates that the Ramp is just over half
complete, with a Ramp Time remaining of 10 minutes.
Figure 8
Treatment Pressure
Display
Ramp Progress
Ramp Time
Remaining
AC Power Indicator
Battery Status Display (PowerShell Only)General Status Display
Fault
Reminder
Figure 9

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Battery Status Display
This icon is displayed when the optional PowerShell and Battery are connected. The level of
charge remaining on the Battery is indicated by the number of solid bars in the icon. The bars
ash when the Battery is charging. For example, the icon shown in Figure 9 indicates that the
Battery has between 25-50% of charge remaining. Make sure the Battery is fully charged before
each use.
Number of Solid Bars Charge Remaining
1 10-25%
2 25-50%
3 50-75%
4 75-100%
AC Power Indicator
This icon is displayed when the Z1 is connected to an AC power outlet via the Power Supply.
General Status Display
In standby mode, this display eld shows the current date. During treatment it shows the
currently selected Z-Breathe setting (1, 2 or 3).
FAULT
“FAULT”is displayed if one of several conditions has occurred that require your attention. See “Fault
Conditions”(page 21) for explanations of the FAULT codes.
REMINDER
“REMINDER” is displayed if there is excessive air leakage. See “Reminder Alert (Air Leak Detection)”
(page 21) for an explanations of REMINDER conditions.

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Starting and Stopping Treatment
1. Press the Start/Stop Button on the Z1 to initiate treatment using the programmed
treatment setting. The Treatment Pressure Display will show the actual pressure
being delivered at all times. If the Ramp Mode has been programmed, the Ramp start
pressure will be displayed upon pressing the Start/Stop Button and the indicated
pressure will rise as the Z1 Ramps up to prescribed treatment pressure. If the incorrect
pressure is displayed, contact your health care provider before commencing CPAP
therapy. (Figure 10)
CAUTION (When using the PowerShell Only):
Make sure your Battery is fully charged before
commencing CPAP therapy using the PowerShell.
The battery life of a fully charged battery in the
PowerShell is typically 8 hours or longer and
treatment will terminate when the charge is
expended.
2. Press the Start/Stop Button a second time to stop
treatment.
Programming Treatment Pressure
When the Z1 is in standby mode, press and hold the
Start/Stop Button for 3seconds until the pressure
value ashes. While it is ashing, repeatedly press
either the Up or Down Arrow Buttons to increase or
decrease the pressure (Figure 11). When you have
reached the prescribed pressure, press and hold the
Start/Stop Button for approximately 3seconds to save
the treatment pressure setting (this setting will be
saved even when the Z1 is not powered). The Z1 will
return to standby mode. To return to standby mode
without saving the new setting, press and release the
Start/Stop Button momentarily instead of holding it
down.
Current
Treatment
Pressure
Start/Stop
Button
Figure 10
Up
Arrow
Button
Down
Arrow
Button
Start/Stop
Button
Treatment
Pressure
Figure 11

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Programming Ramp Mode
Some users nd it comforting to acclimate to CPAP
therapy each session. This can be accomplished by
programming the Ramp Mode which allows you
to start with a low initial pressure and gradually
increase to the prescribed treatment pressure.
Setting Ramp Time
When the Z1 is in standby mode, press and hold the
Up Arrow Button for approximately 3seconds until
the “00 MINUTES”value ashes. While it is ashing,
repeatedly press either the Up or Down Arrow
Buttons to increase or decrease the Ramp Time in
5minute increments. (Figure 12) Set the Ramp Time
to“00MINUTES””to disable the Ramp Mode.
When the desired Ramp Time value is reached, press and hold the Start/Stop Button for
approximately 3seconds to save your Ramp Time setting (this setting will be saved even when
the Z1 is not powered). The Z1 will return to standby mode. To return to standby mode without
saving the new setting, press and release the Start/Stop Button momentarily instead of holding it
down.
Setting Ramp Start Pressure
Press and hold the Down Arrow Button for 3 seconds until the Ramp start pressure value ashes.
While ashing, repeatedly press either the Up or Down Arrow Buttons to increase or decrease the
Ramp start pressure by 0.5 cmH2O increment. (Figure 11) Ramp start pressure must be lower than
prescribed pressure.
When the desired value for Ramp start pressure is reached, hold down the Start/Stop Button for
approximately 3 seconds to save your setting. The Z1 will return to standby mode. To return to
standby mode without saving the new setting, press the Start/Stop Button momentarily instead
of holding it down.
User Software
See separate Z1 Software Guide for information on data viewing software. This guide may only be
available online.
USB Firmware Upgrade
A Z1 rmware upgrade can be downloaded via the Patient Software. To upgrade the rmware on
your Z1 connect the Z1 to your PC with a USB cable. The USB rmware upgrade can also be used
to set the date and time on the Z1.
1. To upgrade rmware, click the“Upgrade Firmware” button.
2. To set the date and time click the“Set” button.
Up
Arrow
Button
Down
Arrow
Button
Ramp Time
Ramp
Pressure
Figure 12

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Z-Breathe™Algorithm Selection
Z-Breathe is a proprietary algorithm engineered in the Z1 to smooth out the breathing cycle while
enjoying the benets of CPAP therapy. Typically users experience pressure swings while breathing
on a xed pressure CPAP device. Pressure swings occur as a spike in pressure during exhalation
and a drop in pressure during inhalation. Z-Breathe is designed to eliminate the spikes and drops
while keeping the pressure constant, thereby delivering more comfortable therapy.
Pressure swings can vary between users and this is due to the lung capacity of the person
breathing on the machine. Larger individuals will typically have greater lung capacity that will
require a more aggressive setting and for this reason we have created 3 levels of Z-Breathe:
— CPAP 1 oers mild pressure swing relief
— CPAP 2 is the Default Setting and oers moderate pressure swing relief
— CPAP 3 is the most aggressive setting for pressure swing relief
You can change the setting of the Z-Breathe Algorithm when your Z1 unit is in Standby Mode
(pressure of “0.0” indicated on the display). To change the setting, hold down both the Up and
Down Arrow Buttons at the same time until you see“CPAP – 1”, “CPAP – 2” or “CPAP – 3” ashing
on the display. Press the Up or Down Arrow Buttons until you observe your desired setting on the
display. To lock-in the setting, hold down the Start/Stop Button until the “CPAP – X” indicator no
longer ashes on the display.
The Z-Breathe settings in relation to the xed pressure are illustrated in the graph below. We
encourage you to experiment with the settings to achieve maximum comfort.
P
r
e
s
s
u
r
e
S
w
i
n
g
10 cmH2O
Z-Breathe 1
Z-Breathe 2
Z-Breathe 3

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Charging the Battery (PowerShell Only)
WARNING: Only charge the Battery with
the supplied Z1 PowerShell and the supplied
Z1 Power Supply. Do not use any other battery
charger, AC adapter, or other device to charge
the Battery.
With both the Z1 and the Battery fully inserted into the
PowerShell, plug the Power Supply into the PowerShell as
shown and into a power outlet. (Figure 13)
CAUTION: Make sure your Battery is fully
charged before commencing CPAP therapy
using the PowerShell. The battery life of a fully
charged battery in the PowerShell is typically
8hours or longer, after which treatment will
terminate. To recharge the Battery, see “Charging
the Battery”
Ensure the Z1 is in standby mode (display reads 0.0). The Battery
will not charge unless the Z1 is in standby mode. The Battery
status indicator on the Z1 will ash when the Battery is charging.
The number of solid bars indicates the current level of charge.
(Figure 14)
The battery status indicator will stop ashing when the battery
is fully charged. Typically it will take 8hours to fully charge the
battery. After a few minutes, the back lit display will turn turn o.
This is to conserve power. It does not indicate that the battery is
fully charged.
NOTE: The battery will not charge if you are using the device at the
same time.
Care
The Z1 System needs periodic care. It is the user’s responsibility to be aware of the following items
for care:
• Inspections
• Cleaning
• Filter Replacement
• CPAP Tube Replacement
• Reminders and Fault Conditions
Inspections
Before each use carefully inspect the Z1, CPAP Tube, Filter, and mask for signs of wear, damage or
discoloration. For replacement parts visit www.breas.com.
Figure 13
Figure 14

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Cleaning
Regular cleaning should be performed in accordance with the instructions below.
WARNING: This device can expose you to electrocution. Do not immerse
the Z1, Power Adapter, Power Cord or Battery in water. Always unplug these
devices before cleaning (only as instructed in this User Guide) and make sure
they are dry before plugging back in.
CAUTION: Do not use bleach, chlorine, alcohol, or aromatic-based
solutions, moisturizing or antibacterial soaps or scented oils to clean the Z1.
Never attempt to clean the Power Adapter, PowerShell, Battery or accessories
with any of these solutions. These solutions may create a shock hazard, cause
damage and reduce the life of these products.
Daily
1. Remove the CPAP Tube and the mask from the Z1.
2. Refer to the instructions for cleaning, maintenance and replacement provided with
your CPAP Tube and mask.
3. Before next use, reconnect the CPAP Tube and the Tube Adapter to the Z1 and mask.
As Needed
1. Clean the exterior of the Z1 with a soft damp cloth and mild detergent and wipe
clean. Never submerge the Z1 in water. Do not allow soap or water to enter the Z1.
Filter Replacement
The Filter should be inspected weekly for holes and blockage by dirt and dust, and should be
replaced every month (or more often if necessary). The Filter is accessed by removing the End Cap
as described in “Assembling and Powering Up: Filter and End Cap”.
NOTE: The Z1 uses a specially designed Filter that is only available from
Breas. To purchase replacement lters visit www.breas.com.
WARNING: Do not attempt to use any air lter which is not supplied by
Breas for the Z1. The Z1 is designed to only work with approved materials. A
lter which is not approved may cause damage to the Z1 from overheating.
CAUTION: Do not operate the Z1 without the Filter. The Z1 must
operate with a lter installed; failure to do so may damage the Z1 and allow
impurities into the respiratory system.
CPAP Tube Replacement
The CPAP Tube should be replaced according to the instructions provided with the CPAP Tube.