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servo i manualPlease check the URL and try again or browse the site from the entry points below. Unless otherwise specified, all product and service names on this website are trademarks owned by or licensed to Getinge AB, its subsidiaries or affiliates. No trademark, trade name, or trade dress on this website may be used without the prior written authorization of Getinge AB. Getinge, Getinge Group, Getinge Passion for Life, Maquet, and Atrium are trademarks or registered trademarks of Getinge AB, its worldwide subsidiaries or affiliates. Org No. 556408-5032 This website is intended to provide information to an international audience outside of the US. All images used are for illustrative purposes only and may not accurately represent the product or its use. These main configurations are as standard equippedThe Servo-i can be divided into the following mainInterface display.Power supply and battery back-up is alsoThe Control cable connects the User Interface andThe Servo-i shown in the illustration is mounted onto. Sign in Forgot Password. My Bench Close Sign In Not A Member. Sign Up Join MedWrench OK name type Receive Summary Emails. It features all the modes you would expect from an advanced ventilation system in one adaptable platform. Four basic configurations are available: SERVO-i Infant, SERVO-i Adult, and two editions of SERVO-i Universal for all patient categories. SERVO-i Infant and SERVO-i Adult can always be upgraded to SERVO-i Universal. All SERVO-i ventilatory configurations are effective for bedside use. Unique features and upgrades can be added as your needs change, ensuring dependable performance in the years to come and the best possible return on your investment. FORUMS View All (14) Ask a New Question 3 Replies -RTgal 5 months ago 5 months ago ServoI not starting properly, When powering on the machine it is going direct to the ventilation screen (not standby) and says restart ventilator. Some of the buttons work, some don't. It won't let me go to standby. Ideas?http://www.nursing.com.pl/images/daqcard-1200-manual.xml
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I do have a software card but not sure if it is the same one as the machine has, will that be a problem.By continuing to browse the site you are agreeing to our use of cookies. Please review our Privacy Policy for more details. All Rights Reserved. If you continue browsing the site, you agree to the use of cookies on this website. See our User Agreement and Privacy Policy.If you continue browsing the site, you agree to the use of cookies on this website. See our Privacy Policy and User Agreement for details.You can change your ad preferences anytime. The serial number Maquet.All personnel must exercise extreme purpose.Normal operation is estimated to correspond to approx. 5.000 hours of operation. Adequate service tools must always be used.Revision 02 Service Manual 1-5 Mode Fast charging Trickle charging In operation 70 W 38 W Standby 65 W 33 W Off 35 W 6WRevision 02 Service Manual 1-7 Refer to section Servo-i software structure. 2 - 9 Hazard notices in chapter Important. General. 2 - 9 Any service or maintenance must be noted in a log book. Breathing. 2 - 9 2 Discard disposable, replaced and left-over parts Monitoring. 2 - 9 in accordance with appropriate industrial and environmental standards. Panel. 2 - 9 After any installation, maintenance or service System ID. 2 - 9 intervention in the Servo-i, perform a Pre-use check.The User Interface contains all controls used to set the ventilation and monitoring parameters. Ventilation parameters as well as other important information are shown on the User Interface display. The Patient Unit contains pneumatics Mobile Cart and electronics for gas supply to the patient. Power supply and battery back-up is also contained in the Patient Unit. The Control cable connects the User Interface and the Patient Unit. The Servo-i shown in the illustration is mounted onto the optional Servo-i Mobile cart. 2-2 Service Manual Revision 02 The User Interface can be rotated and tilted into a suitable position.http://www.ultramarine.cz/_files/daq-e-series-user-manual.xml Locking levers, mounting devices 20. Serial number label. The serial number stated on and some other items are shown in the illustration this label is the ID number of the User Interface. above. This serial number must always be refered to when ordering service, spare parts, etc for the 1. Display with touch screen. User Interface. 2. Fixed keys for immediate access to special For further information regarding operation of the windows. User Interface, refer to the Users manual. 2-4 Service Manual Revision 02 Control cable connector.It can also be mounted onto 11. 9-pole serial port for data communication a Servo-i Holder or a Servo-i Shelf base. (RS- 232). Items accessible from the outside of the Patient Unit 12. Expiratory outlet. are shown in the illustration above. 13. Inspiratory section cover. 1. Handle. 14. Expiratory inlet. 2. Gas inlet for Air. 15. Module unit for connecting optional modules, 3. Gas inlet for O2. e. g. up to six Battery modules. 4. Equipotentiality terminal. 16. Connector for Servo Ultra Nebulizer, Servo-i. 5. Mains supply connector incl.The main parts of the inspiratory section are the: 14. Two gas modules, Air and O2, for regulation of the inspiratory gas. 15. Connector muff. 16. Inspiratory pipe with housings for the O2 cell and for the safety valve.2 17. O2 cell incl. bacteria filter. 18. Safety valve. SVX9120 19. Temperature sensor (inside the O2 cell connector). 20. Inspiratory pressure transducer tube incl. The expiratory valve coil, mounted under the expiratory cassette compartment, controls the valve membrane in the cassette. PC 1786 inside the expiratory cassette is electrically connected to PC 1784 Expiratory channel via PC 1785 Expiratory channel connector. 2-8 Service Manual Revision 02 New software can be installed via a System SW Update. The System SW must be re-installed if PC 1771 or PC 1784 is replaced. The Breathing SW is executed by microprocessors on PC 1771 and PC 1784.https://labroclub.ru/blog/boss-dd-20-manual Monitoring The Monitoring SW controls all monitoring and alarm functions in the system, including trends of measured values. Events, such as alarms and change of settings will also be logged. The Monitoring SW is stored on PC 1772 Monitoring. New software can be installed via a System SW Update. The System SW must be re-installed if PC 1772 is replaced. PC1784 The Monitoring SW is executed by the microprocessor BREATHING PC1771 SW on PC 1772. PC1772 MONITORING SW Panel SYSTEM ID The Panel SW controls all user interaction, as well as PC1770 SW software updating to all subsystems via the PC Card-interface. The Panel SW is stored on PC 1777 Panel. SVX9143 The System SW must be re-installed if PC 1777 is replaced. The Panel SW is executed by the microprocessor on PC 1777.GeneralThe Servo-i SW installed in the ventilator will containall available system functionality. The software is System IDseparated into different subsystems and stored on The System ID SW is a configuration file, stored onsome of the PC boards.Refer to section User Interface controls. 3 - 2 Hazard notices in chapter Important. PC 1777 Panel. 3 - 2 Any service or maintenance must be noted in a Loudspeaker. 3 - 2 log book. Backlight Inverter. 3 - 2 Discard disposable, replaced and left-over parts in accordance with appropriate industrial and Touch screen assembly. 3 - 2 environmental standards. TFT Display with Backlight. 3 - 2 After any installation, maintenance or service Patient unit. 3 - 3 intervention in the Servo-i, perform a Pre-use check.For software storage. Present on PC 1771, PC 1772 and PC 1777. RAM with battery back-up. For settings, trends and logs. Present on PC 1771 For generation of sound, e.g. alarm. Connected to P72 on PC 1777 Panel. For PC board information, configuration, individual sound volumes. At start-up and during calibration data, etc. Present on almost all PC Pre-use check the function of the loudspeaker is boards and in the O2 cell.http://dieter-sauter.com/images/casio-ea-200-manual.pdfDuring operation it is continuously monitored through current sensing. User Interface Functional Main Blocks diagram marking: U Backlight Inverter PC board with driving stage for backlight (lamps) User Interface controls mounted behind the TFT Display. Integrated parts of the Touch The Touch screen implies the touch function of the screen assembly.The front panel frame with the touch screen, membrane buttons and DIM sensor forms the Touch screen assembly and must PC 1777 Panel be handled as one complete part.The design of the gas inlet nipples and theirFunctional Main Blocks diagram marking: I color markings vary according to the standard chosen.The main block Inspiratory Section conveys thebreathing gas from its gas inlets for Air and O2 supply Gas is to be connected from hospital central gasto the patient breathing system. It comprises the supply or from gas cylinders. The Filter protects the ventilator from particles in the gas delivered to the Gas Modules.Inspiratory valve temperature sensor The temperature of the supplied gas is measured by the Inspiratory Valve Temperature Sensor. This sensor is situated in the gas flow. The output signal from this sensor is used to compensate for the gas density variations due to temperature. Supply pressure transducer The pressure of the supplied gas is measured by the Supply Pressure Transducer. The output signal from this transducer is amplified. It is then used to calculate the absolute pressure of the SVX9003 gas to compensate for gas density variations due to pressure.1. Filter Flow transducer2. Inspiratory valve temperature sensor The gas flows through a net (resistance) which3. Supply pressure transducer causes a pressure drop. The pressure is measured4. Flow transducer (Delta pressure transducer and net) on both sides of this net and the differential pressure5. Nozzle unit with valve diaphragm value is then amplified.6. Inspiratory solenoid The Gas Modules are factory calibrated. Each Gas Module must not be disassembled further than described in chapter Preventive maintenance.Revision 02 Service Manual 3-3 The O2 Cell is mounted in a housing on the The valve diaphragm, controlled by the Inspiratory Inspiratory Pipe and is protected by a bacteria filter. Solenoid, regulates the gas flow through the Gas Module. The complete plastic nozzle unit must be replaced during the Preventive maintenance. After replacement, allow the diaphragm to settle during approx. 10 minutes before gas pressure is SVX9015 connected to the Gas Module. Maintenance including exchange of bacteria filter Inspiratory solenoid according to the User?s manual. The bacteria filter must also be replaced during the Preventive The gas flow through the Gas Module is regulated by maintenance.At constant ambient pressure this output is to the settings on the User Interface.The life time of the cell is affected by the O2 concentration. The O2 cell is automatically calibrated each time a ID PROM Pre-use check is performed (if O2 is connected to the Each Gas Module is provided with an ID-PROM. The ventilator). ID information can be read by the Servo-i System. If the ventilator has continually been in use for a long time, the measured O2 concentration may drop due to normal degradation of the O2 cell. This will activate Connector muff a nuisance alarm. For further information, refer to the The Connector Muff connects the Gas Module Users manual, chapter section O2 cell adjustment.Note: Pre-use check is recommended to use to calibrate the O2 cell. Inspiratory pipe An ID PROM is integrated into each O2 cell. Its ID information and remaining lifetime can be read by the The Inspiratory Pipe leads the gas from the Servo-i. Connector Muff to the Inspiratory Outlet. The pipe is provided with internal flanges with the purpose to improve mixing of O2 and Air. 3-4 Service Manual Revision 02 The electronics for this regulation is (with a clicking sound). This is the normal operationallocated on PC 1775 Plug-and-play back-plane. PC 1780 Pneumatic back-plane Interconnecting board including connectors for cables to the Gas Modules as well as to the SafetySafety valve Valve and to the O2 Cell and the TemperatureThe movable axis of the Safety Valve Pull Magnet Sensor.controls the opening and closing of the safety valvemembrane in the Inspiratory Pipe. The pull magnet iselectrically activated (closed) from the main blockExpiratory Channel.SVX9016When the Safety Valve is not activated, the weight ofthe pull magnet axis, in combination with the designof the valve membrane, pushes the pull magnet axisdownwards. This actuates the Safety Valve to beopened and the inspiratory gas is let out from theInspiratory Pipe via the Safety Outlet thus enabling adecrease in the inspiratory pressure. This condition is controlled by the Breathing subsystem.Revision 02 Service Manual 3-5 The expiratory cassette can be interchanged between different Servo-i systems. A Pre-use check is always required after exchanging the expiratory cassette. The left hand side transducer is sending out ultrasonic sound that is reflected against the inner PC 1786 wall of the expiratory channel. The ultrasonic sound Ultrasonic Expiratory Ultrasonic is recieved by the right hand side transducer now transducer channel cassette transducer acting as a reciever. The time from sending to recieving ultrasonic sound in downstream expiratory gas flow is measured. Then the right hand side transducer (earlier recieving) is sending out ultrasonic sound upstream the expiratory gas flow. The ultrasonic sound is recieved Outlet Inlet by the left hand side transducer now acting as a reciever. The time from sending to recieving ultrasonic sound in upstream expiratory gas flow is SVX9017 measured. The time difference between the downstream and Heating Bacteria Expiratory pressure the upstream time measurements provides flow foil filter tube connector information. A temperature sensor inside the cassette measures the expiratory gas temperature.The inlet is designed to make condensed water drip out and allow use of a water trap for such water to be collected. Expiratory inlet bacteria filter can be connected to protect the cassette from contamination. Heating foil An electrical Heating Foil applied on the outside of the expiratory pipe where the Ultrasonic Flowmeter is situated. The purpose of the Heating Foil to reduce condensation and maintain a stable temperature in the expiratory gas. 3-6 Service Manual Revision 02 The filter and mounted in the expiratory cassette compartment.the connector are integrated parts of the cassette. It connects to PC 1786 mounted in the ExpiratoryThe filter protects the transducer on PC 1781 Cassette when the cassette is docked to thePressure Transducer from contamination.The valve is fully open as longas no power is supplied to the coil. The ventilators System ID (Serial No.), configuration, time stamp for preventive maintenance, etc, is storedOperating capacity for the membrane is estimated to in an EEPROM on PC 1770. Thus, when replacing10.000.000 breathing cycles. When this limit ispassed or if the membrane for some reason has PC 1770, a spare part that is factory programmed for the concerned ventilator must be used. 3become defective, it must be replaced. Refer toinstructions in chapter Disassembling and As the preventive maintenance time stamp will beassembling.In order to makeRemaining operating capacity (in ) for the this new time stamp correct, the preventivemembrane can be shown in the Status window.Pressure transducersExpiratory valve coil Functional Main Blocks diagram marking: TThe movable axis of the Expiratory Valve Coilcontrols the opening of the Expiratory Valve by PC 1781 Inspiratory pressure transducerpushing the valve membrane into desired position.The power supply to the coil is regulated so that the The pressure, conveyed via the pressure tuberemaining pressure in the patient system, towards connected to this block, is led to and measured bythe end of the expiration time, is kept on the PEEP its differential pressure transducer. With differentiallevel according to front panel setting. Backflow via the cassette H2O must be avoided.is prevented by the Expiratory One-Way Valve. Its Includes an ID PROM. The ID information can berubber membrane and valve seat are integrated parts read by the Servo-i System.of the Expiratory Outlet. PC 1781 Expiratory pressure transducerPC 1786 Expiratory channel cassette Function identical to PC 1781 Inspiratory PressureThe PC 1786 Expiratory Channel Cassette is a Transducer.connection board, integrated into the ExpiratoryCassette, for the Ultrasonic Flowmeter and for theHeating Foil. It connects to PC 1785 mounted in theexpiratory cassette compartment.Includes an ID PROM. The ID information can beread by the Servo-i System.Revision 02 Service Manual 3-7 The output signal Exp. Flow is used to generate the flow reference signals Insp Flow Ref 1 in the main block Control. Includes an ID PROM. A thermistor on PC 1784 monitors the temperature Note: The System SW must be re-installed if PC 1771 is replaced.If the battery on PC 1771 is disconnected or if the battery voltage is Includes an ID PROM. The ID information can be too low, user default configurations made via the read by the Servo-i System. Field Service System (FSS) and Pre-use check Note: The System SW must be re-installed if PC results including transducer calibrations will be 1784 is replaced. erased. The lithium batteries must be replaced after 5 years. The main block Monitoring cooperates achieve: with the Loudspeaker in the User Interface. 1. Regulation of Inspiratory flow which is used The PC 1772 Monitoring handles all supervision and during inspiration time in Volume Control (VC) alarms in the system. It activates pressure reducing mode.All alarms are conveyed and displayed on the front 3. Regulation of a constant Inspiratory flow which is panel and the alarm sound is also generated. In case used during expiration time in all modes.The following voltages are supervised: 5. Regulation of Inspiratory flow during inspiration time.No voltage or frequence setting isPC 1772 also contains a barometric transducer and required.the measured barometric pressure is supplied to theother sub-units in the system.The operator can set all parameters, including Includes an ID PROM. The ID information can be breathing mode, during Standby.The Internal Fan forces cooling air through the Patient Unit. The cooling air flow inside the Patient Unit is indicated in the Functional Main Block Diagram. The cooling air outlets are located in the expiratory section. The Internal Fan is controlled by the Temperature Sensor in the O2 cell connector via electronics on SVX9019 PC 1775 Plug-and-play back-plane. The battery lifetime is limited and the batteries must Optional PC board slots thus be replaced after 3 years. Manufacturing date Functional Main Blocks diagram marking: X (year-week) is printed on the battery label. For optional equipment, the Servo-i is equipped with Each battery includes an ID PROM. The ID two extra PC-board slots.The optional Alarm output connector (see below) is mounted in one of the extra PC-board slots. CO2 Analyzer module (optional) Alarm output connector (optional) The CO2 Analyzer module is an optional accessory that is connected to the Module unit. Functional Main Blocks diagram marking: A The CO2 Analyzer option allows for continuous PC 1789 Remote alarm connector containing the monitoring shown in a waveform (capnogram) and optional function Alarm output connector is mounted as numericals on the screen. The CO2 Analyzer module is, via a cable, connected to a Capnostat sensor mounted on an airway The Alarm output connector enables connection of an adapter at the Y-piece. The sensor uses a solid external alarm signal system to the Servo-i System.It measures the difference between a reference the alarm output signal is active as long as the audio light beam and one filtered for CO2 wavelength.The Alarm output connector has two contact The CO2 Analyzer- function must be enabled in the functions: NO (Normally Open) and NC (Normally configuration software. Closed). In an alarm situation the open contact will close and the closed one will open. The cable can be partly winded up output connector can be found in chapter Diagrams. under a rubber cover on the rear of the User The Alarm output- function must be enabled in the Interface.Refer to section Handling PC boards. 4 - 2 Hazard notices in chapter Important. Replacing PC boards. 4 - 2 Any service or maintenance must be noted in a log book. Assembling guidelines. 4 - 2 Discard disposable, replaced and left-over parts Tightening torque. 4 - 2 in accordance with appropriate industrial and environmental standards.The Servo-i system specifications allow unit operation also during patient transportation. All parts of the User Interface and the Patient Unit assembled with screws and nuts are therefore tightened with a specified torque and secured with threadlocking Handling PC boards adhesives. The PC boards contain components that In order to maintain these specifications over time, are highly sensitive to static electricity.Make sure to follow the components must take certain guidelines stated below.Remove and insert the PC boards very carefully to Note: Threadlocking adhesive is not required on avoid damage to the connectors.Now customize the name of a clipboard to store your clips. Notes Disclosure Dr. Beck has made inventions related to neural control of mechanical ventilation that are patented. The license for these patents belongs to MAQUET Critical Care. Future commercial uses of this technology may provide financial benefit to Dr. Beck through royalties. Dr. Beck owns 50 of Neurovent Research Inc. (NVR). NVR is a research and development company that builds the equipment and catheters for research studies. NVR has a consulting agreement with MAQUET Critical Care. Louis Fuentes, RRT is a former Maquet employee currently employed by Phillips Medical. Howard Mc Donald, RRT is an employee of Maquet Medical Systems. Suggested Reading Beck J, Emeriaud G, Liu Y, Sinderby C. Neurally adjusted ventilatory assist (NAVA) in children: a systematic review. CrossRef PubMed Google Scholar Duyndam A, Bol BS, Kroon A, Tibboel D, Ista E. Neurally adjusted ventilatory assist: assessing the comfort and feasibility of use in neonates and children. Effect of changing NAVA levels on peak inspiratory pressures and electrical activity of the diaphragm in premature neonates.Non-invasive neurally adjusted ventilatory assist in preterm infants: a randomised phase II crossover trial. CrossRef PubMed Google Scholar Longhini F, Ferrero F, De Luca D, Cosi G, Alemani M, Colombo D, et al. Neurally adjusted ventilatory assist in preterm neonates with acute respiratory failure. The response of flow-triggered infant ventilators. In: Tobin MJ, editor. Principles and practice of mechanical ventilation. 3rd ed. New York: McGraw Hill; 2012. Google Scholar Sinderby C, Navalesi P, Beck J, Skrobik Y, Comtois N, Friberg S, et al. Michael’s Hospital Toronto Canada 2. Jackson USA 3. Maquet Medical Systems Wayne USA Springer, Cham. The SERVO-i Ventilator System consists of the following components: 1. User Interface—for setting ventilation modes, displaying patient data, and indicating alarms 2. Patient Unit—for mixing gases 3. Patient Breathing System—for delivering and exchanging gases SERVO-i Ventilator System should be performed as part of a service contract with MAQUET. Nonprofessional Servicing MAQUET has no responsibility for the safe operation of the SERVO-i Ventilator System if installation, service or repairs are performed by persons other than MAQUET authorized personnel. 8 SERVO-i VENTILATOR SYSTEM V7.0, User ?s Manual Additional warnings appear in context throughout this document. Information is highlighted with Warning, Caution, Important or Note, where: WARNING. Indicates critical information about a potential serious outcome to the patient or the user. CAUTION: Indicates instructions that must be followed in order to ensure the proper operation of the equipment. Important: Indicates information intended to help you operate the equipment or its connected devices easily and conveniently. Note: Indicates information requiring special attention. 1.2.1 GENERAL This manual summarizes the functions and safety features of the SERVO-i Ventilator System. It is not all-inclusive and should not be construed as a substitute for training. WARNINGS! Always perform a Pre-use check before connecting the ventilator to a patient. If any of the following occurs, discontinue use of the ventilator and contact a service technician: - Unfamiliar pop-up windows on the screen - Unresolvable alarms - Unfamiliar sounds - Any unfamiliar or unexplained event Keep the ventilator upright during use. Make sure that ventilation is started when a patient is connected to the ventilator. When the ventilator is in Standby, a flashing message, Patient not ventilated, is displayed as a reminder directly above the word Standby. The SERVO-i Ventilator System must be operated only by authorized personnel who are well trained in its use. Do not cover the ventilator in any way, since the functioning of the equipment may be adversely affected. When the ventilator is used for MCare Remote Service, use only network equipment that is safe and in compliance with the relevant electrical and EMC standards such as IEC-60950. Note: The network cable is excluded from this requirement. Always disconnect the network cable before starting ventilation when the ventilator is used for MCare Remote Service. Positive pressure ventilation can be associated with the following adverse events: barotrauma, hypoventilation, hyperventilation or circulatory impairment. The SERVO-i Ventilator System should not be used in MR environments unless the requirements described in the SERVO-i MR Environment Declaration (order no. 66 71 670) are met and an agreement with MAQUET is signed. The SERVO-i Ventilator System is not intended to be used during radiotherapy, since this may cause system malfunction. The SERVO-i Ventilator System must not be used in a hyperbaric chamber unless it is equipped for hyperbaric oxygenation. The SERVO-i Ventilator System must not be used with helium without the Heliox option. Only accessories, supplies, and auxiliary equipment recommended by MAQUET should be used with the ventilator system. Use of any other accessories, spare parts or auxiliary equipment may cause degraded system performance and safety. The power supply cord must be plugged directly into the mains power outlet without the use of any multiple socket outlets. If a multiple socket outlet is used together with other products, total leakage current might be exceeded at earth fault. CAUTIONS: In USA, Federal law restricts this device to sale by or on the order of a physician. The expiratory channel and expired gas from the exhaust port may be contaminated. Refer to the Installation instructions to assemble the system or options to obtain a proper mechanical assembly. Service, repair and installation must be performed by MAQUET authorized personnel only. When lifting or moving the ventilator system or parts of the system, follow established ergonomic guidelines, ask for assistance, and take appropriate safety precautions. Before use, make sure the system version displayed under Status corresponds to the system version described in the User ?s Manual. The use of a support arm to relieve the patient from the weight of the tubing system is recommended. When using the MCare Remote Service function, install the network cable so that there is no risk of anyone tripping over it.Do not leave the patient unattended when connected to the ventilator. MAQUET has no responsibility for the safe operation of the SERVO-i Ventilator System if the Intended Use requirements specified in this document are not followed. Contact a MAQUET representative regarding decommissioning of the equipment. Disconnect the mains power cable from the outlet to isolate the ventilator from mains power. Do not touch accessible connector contacts and the patient simultaneously. Important: Always use a heat and moisture exchanger (HME) or equipment to prevent dehydration of lung tissue. While the SERVO-i Ventilator System is in use, the wheels of the carrier shall be locked and the carrier shall be in a horizontal position. Securely attach all cables, etc, to minimize the risk of unintentional disconnection. Extra care should be taken when handling the gas trolley, as it may tip over. All excess fluids must be disposed according to hospital routines. WARNINGS! The power cord must be connected only Keep the system and its gas hoses clear to a properly grounded AC electrical of all ignition sources.Do not use the system with worn or To guarantee reliable battery backup, frayed hoses or hoses that have been two fully charged battery modules must contaminated by combustible materials be installed at all times.Oxygen-enriched gas is extremely flammable: if you detect a burning odor, CAUTIONS: disconnect the oxygen supply, mains Do NOT use antistatic or electrically power and remove the batteries.Make sure that both the mains power Avoid contact with external electrical outlet and the power supply connector connector pins.