Oxygen Concentrator
Contents
1. Ole Zhengzhou Olive Electronic Technology Co Ltd Service Address No 79 Zhenghua Road Zhengzhou China Zip Code 450000 Tel 86 371 86097310 Wwe Oxygen Concentrator User Manual A Ohe OLV 3 OLV 3W OLV S OLV 5W Please read the instruction carefully before you use the machine Zhengzhou Olive Electronic Technology Co Ltd Contents L Product OYGSEPVIQULI a iac dictis bon osi tepore ei ciini deat 01 2 Safety OV CT VIC W 02 3 Operating PrrEotD LE assassins tsawesnsvessssvaresciaqcteeneateandeonemaans 04 4 Structural PE AGIT C Sia ctetericcesasns thunasientiinchaeeiettoetianecort 05 2 Technical ite SET 8o cedula rastanscsaetendionadanc cua 46d 06 6 Product IstallatiOD Lee ciadnibn Doi nine Ida 08 T PIOUSCL USE eeu iuuenes e a 09 8 EN In ine tet 14 9 Troubl shoULI ED cn ioc qoippe HR a o DIEEUE 16 IO Transportation and Storage said traria banks 17 I1 After Sale SOEVIOBS aae caute i td aos RR 18 DPC CES SOUS PRETI s 18 I5 Packing El8l oue ato Etre iMd sesa dum ete tue 19 14 Annexed Table and Pipiteeer ett 19 1 Product Overview Welcome to choose the medical oxygen concentrator series products manufactured by our company OLY series medical oxygen concentrator adopts 220V 110V AC power supply uses air as raw material and high quality molecular sieve as adsorbent and adopts the principle of pressure swing adsorption PSA to directly separate oxygen from nit2. 3 Adopt pressure swing adsorption PSA technology of efficient molecular sieve with simple process flow and low energy consumption 1 4 Specification amp model OLV 3 W Atomization function Product code maximum recommended flow 2 Safety Overview 2 1 Safety precautions Safety precautions Warning 1 This product can not be used for life support or life sustaining Patients who can not express discomfort or can not hear or see alarm signals require additional care 2 Oxygen therapy may be harmful under certain conditions Patients shall correctly control oxygen flow and oxygen absorption time under the guidance of physician 3 Excessive use of high purity oxygen has toxic and side effect on human body 4 People suffering severe carbon monoxide poisoning shall not use this product 5 To prevent power failure or possible failure of oxygen concentrator when the patients in urgent need of oxygen and the critically ill patients absorb oxygen using this product other standby oxygen supply devices e g oxygen cylinder oxygen bag etc must be provided 6 If the medical oxygen concentrator can not work properly or if you feel uncomfortable please stop using immediately and consult physician or supplier to solve the problems 7 Oxygen is a kind of combustion supporting gas thus the oxygen concentrator can not be used in places with open flame or the danger of flammability smoking or open
3. degree is type B in line with the provisions of the following standards GB 9706 1 2007 Medical electrical equipment Part 1 General requirements for safety YY 0732 2009 Oxygen concentrators for medical use Safety requirements Y Y 0709 2009 Medical electrical equipment Parts 1 8 General requirements for safety Collateral standard General requirements Tests and guidance for alarm systems in medical electrical equipment and medical electrical systems 5 1 Operating environment oxygen concentration status indicator Ambient temperature 10 C 40 C Relative humidity 30 75 Atmospheric pressure 860hPa 1060hPa Power supply 220V 22V 50Hz 1Hz 110V 15V 60Hz 1Hz There shall be no corrosive gas or strong magnetic field in surrounding environment 5 2 Air requirements Impurities in raw material air lt 0 3 mg cm Oil content in air 0 01 ppm 5 3 Product functions Timing function show the total working time through display screen Time setting set oxygen absorption time as required Automatic shutdown automatic shutdown after reaching preset oxygen concentration time Power failure alarm function Low voltage alarm function Low oxygen purity alarm function Circulating pressure failure alarm function Air compressor short circuit alarm function Atomization treatment function only models with atomization function 05 06 5 T
4. a different power environment Install voltage stabilizer Molecular sieve becomes aging Only oxygen concentrator use for two years or 5 000 hours then consider this reason Replace molecular sieve Oxygen purity sensor failure Use oxygen purity tester to test the oxygen purity Replace the oxygen purity sensor Solenoid valve failure When oxygen concentrator running every 8 9 seconds the solenoid valve will be switched once accompanied by 1 2 seconds exhaust sound Replace the solenoid valve Fan failure No gas from bottom vents the machine is heat Replace the cooling fan LCD display is not normal or no display LCD failure Such as garbled missing lines the backlight does not shine Replace the LCD screen Rule out the possibility of above failures oxygen concentrator is not working properly or false alarms Control board failure Replace the control board Table 2 Failure analysis and troubleshooting examples 15 16 10 Transportation and Storage 10 1 Transportation and storage precautions Transportation and Storage Precautions Attention 1 Before transportation or storage pour out the water from humidifier bottle 2 During transportation and handling medical oxygen concentrator shall be kept upright prohibit inversion or horizontal placing 3 When the storage temperature is below 10 C place the m
5. filter are very important for protecting air compressor and molecular sieve and extending 13 14 8 Maintenance the service life of medical oxygen concentrator please timely clean and replace according to requirements Primary air suction filter shall be cleaned once a week During cleaning draw out filtering sponge and rinse with clean water it can be used after natural drying Secondary air suction filter shall be cleaned once a week During cleaning unscrew the filter clockwise take out the filter and rinse with clean water after natural drying install it to the original place and tighten counterclockwise 8 5 Cleaning of medical oxygen concentrator When turning off the power of medical oxygen concentrator use a soft towel dipped with a small amount of neutral household cleaner to wipe the casing and then use a dry towel to dry up When wiping pay attention to preventing liquid infiltrating into casing slot 8 6 Replacement of battery When the power failure alarm sound of medical oxygen generated is reduced significantly users can check it by disconnecting the power supply of medical oxygen concentrator it is necessary to replace the battery Battery specifications 9V alkali battery To replace open the battery compartment cover in the transparent cover remove the old battery insert new battery according to the marked polarity 9 Troubleshooting In case of any problems during use before sen
6. on plug in the power cord press the Power switch the Power indicator will be on Medical oxygen concentrator enters into the ready to start state and the LCD is powered on and displays Care for you which means that the medical oxygen concentrator enters into the ready to start state as shown in Fig 4 7 Use of product Oxygen Timing Top cover of oxygen concentrator E Power switch Purity light Power light Flow control knob LCD Trouble light Overload protector Atomization Port Humidifier bottle Fig 3 Control panel Care for you Total time 00000H Working Continuous Fig 4 Display when starting Fig 5 Display when starting 09 10 7 Use of product 3 Continuous timing oxygen concentration Press the Oxygen Timing button oxygen concentrator will be started and enters into Continuous oxygen concentration working state The LCD displays the total use time and other contents of oxygen concentrator as shown in Fig 5 After medical oxygen concentrator is started press the Oxygen Timing button again medical oxygen concentrator will enter into timing oxygen concentration state and the timing is 30 minutes see Fig 6 for each press of Oxygen Timing button preset time will be increased by 30 minutes maximum preset time is 120 minutes users can preset the time for oxygen concentration as required
7. parts and consumables atomizer filtering foam filtering cotton etc 11 3 After sale services After sale service Zhengzhou Olive Electronic Technology Co Ltd Service Address No 79 Zhenghua Road Zhengzhou China Zip Code 450000 Tel 86 371 86097310 12 Accessories Accessory Considerations Accessory Considerations Attention 1 Do not use parts and accessories not recognized by the manufacturer in order to avoid adverse effects on safety and product performance 2 Medical oxygen concentrator shall use dedicated humidifier bottle for replacement please contact the dealer or manufacturer to purchase 3 The presented oxygen tube is a disposable sterilization product just for one person Users can purchase qualified products with Medical Device Registration Certificate by referring to the model and specification of the presented sample 17 18 13 Packing List 14 Annexed Table and Figure Table 3 Packing list of medical oxygen concentrator 14 2 Electric control chart No Name Specification amp Model Unit Qty Remarks Transformer OLV 3 OLV 3W Oxygen O 1 yg t 1 xygen Concentrator OLV 5 Se Overload eee protector OLV 5W a 220V Control 2 Power cord 0 75mm x3 1 110V board Nasal pipe 2 s Q a Only I o 4 Atomizer Mo
8. After a timing of 120 minutes press the Oxygen Timing button again oxygen concentrator without atomization function will stop oxygen concentration while oxygen concentrator with atomization function will enter into atomization mode press the Oxygen Timing button again it will stop oxygen concentration 4 Adjust flow Open the transparent cover slowly rotate the flow control knob to the desired flow rate the reading shall be subject to the center of the black float in the direction marked on the Flow control knob Meanwhile there are bubbles in water in humidifier bottle there shall be oxygen output from Oxygen Output 5 Start oxygen absorption Insert oxygen tube in the Oxygen Output of humidifier bottle close the transparent cover after confirming that there is oxygen output from oxygen tube nose wear the oxygen tube see oxygen tube operating instructions for wearing methods of oxygen tube to start oxygen absorption 6 Automatic shutdown After reaching the preset oxygen concentration time oxygen concentrator will automatically shut down The display of LCD is shown in Fig 7 7 Shut down immediately During operation of medical oxygen concentrator press the Power Switch on top cover medical oxygen concentrator will shut down immediately Total time 00000H Total time 00038H Working Shutdown 30 minutes Time out Fig 6 Display oftimed oxygen concentration Fig 7 Shutdown display 7 Use of product 8 At
9. ding the machine for repair please read this section carefully you may simply solve the problems by yourself If the problems can not be solved according to the examples in Table 2 please send the medical oxygen concentrator for repair Do not attempt to repair or remove the casing of medical oxygen concentrator by yourself Fault symptom Check item More complex reasons for judgment method Measures There is no display on LCD when starting or running medical oxygen generator sends alarm sound Touble light is red Power failure Use the machine after power on Power cord is loose Check and insert the power cord properly There is no alarm sound during power off alarm indicator is not on The battery is low or no electricity Replace battery Grid voltage is Low voltage alarm lower than the cue rated voltage Output oxygen Check that if the meter indicates Adjust the flow flow ix toa lative flow within the maximum ffl t se recommended flow range of Howmeter Secondary air R d s suction fiiter is emove secondary air suction Adjust the Purity light becomes yellow or red not cleaned regularly leading to clogged intake filter over 10 minutes to see if the purity light back to normal oxygen flow Bottom vents blocked Oxygen is placed on the bottom of the molded foam inside Keep the bottom vents unobstructed Grid voltage is too low Try
10. echnical Indicators 5 4 Technical indicators 1 Physical and chemical indicators of oxygen Oxygen concentration gt 90 V V Water content lt 0 07g m Carbon dioxide content lt 0 01 V V Carbon monoxide content meet the requirements of table 1 in GB 8982 2009 Gaseous acid and alkali content meet the requirements of table 1 in GB 8982 2009 Content of ozone and other gaseous oxides meet the requirements of table 1 in GB 8982 2009 Odor odorless Particle size of solids lt 10um Content of solids lt 0 5 mg m 2 Technical indicators of product The maximum recommended flow when oxygen concentration gt 90 3L min models OLV 3 and OLV 3W 5L min models OLV 5 and OLV 5W Flow range when outlet nominal pressure is 7 kPa oxygen concentration gt 90 0 3L min models OLV 3 and OLV 3W 0 5 L min models OLV 5 and OLV 5W Atthe recommended maximum flow flow change when the back pressure of 7 kPa is applied lt 0 5L min Flow range when outlet nominal pressure is 0 oxygen concentration gt 90 0 3L min models OLV 3 and OLV 3W 0 5 L min models OLV 5 and OLV 5W Operating noise of the machine lt 45dB A Timer error not more than 3 Output pressure 20kPa 60kPa Release pressure of air compressor safety valve 200kPa 300 kPa Oxygen concentration measurement 0 95 error lt 3 Operating mode continuous operation Atomization quanti
11. edical oxygen concentrator in normal working environment for 8 hours before use 4 Medical oxygen concentrator that has been stopped for long time shall be powered on for inspection 10 2 Requirements for storage and transportation environment Ambient temperature 20 C 50 C Relative humidity lt 95 Atmospheric pressure 500hPa 1060hPa 10 3 Transportation Medical oxygen concentrator packed completely shall be protected from violent collision and direct contact with rain or snow during transportation 10 4 Storage Medical oxygen concentrator shall be stored in indoor well ventilated places without strong sunlight and corrosive gases 11 After Sale Services 11 1 Warranty period The product from the date of sale under normal use and storage conditions the warranty period of this product is one year or 5 000 hours whichever is earlier In case of any quality problems within warranty period our company will repair for free In case of any quality problems after the warranty period our company will charge repair cost 11 2 Warranty scope The following circumstances shall not be within the free warranty of the company 1 Damage due to improper operation of users or use under abnormal conditions 2 Damage or deformation of machine including components and parts due to collision or falling 3 Damage due to disassembly repair or modification by users 4 Damage caused by natural disasters 5 Wearing
12. flame 1s prohibited near people who absorb oxygen 8 Power supply must comply with electrical safety regulations Oxygen concentrator shall not be used when power supply protective earth terminal doesn t comply with the regulations otherwise it may cause personal injury 9 Please turn offthe power and unplug the power cord before the cleaning and maintenance of medical oxygen concentrator 01 02 2 Safety Overview 3 Operating Principle 2 2 Electromagnetic environment guidance Oxygen concentration process flow of OLV series medical oxygen concentrator is shown in Fig 1 Electromagnetic Environment Guidance Attention 1 This product is suitable for use in places including hospitals family and other buildings connected with power supply of civilian low voltage network 2 Radio frequency energy used by this product is for internal operation only Therefore its radio frequency emission is very low without impact on other electrical equipment nearby 3 Due to the impact of radio transmitting devices or other sources of electrical noise in health care establishments serious interference caused by too close distance or large transmitting power may cause interruption of this product 4 If this happens check the use places to find out the source of interference and take the following measures to eliminate interference 1 Turn off nearby devices before starting the machine 2 Change the di
13. g operation of medical oxygen concentrator which is normal 5 No oil grease or other similar substances shall be used on or near medical oxygen concentrator and no lubricant other than those recommended by the manufacturer shall be used 6 During use timely add water when water level of humidifier bottle is below the minimum level 7 During atomization treatment please do not use medical oxygen concentrator for oxygen absorption 8 Medical oxygen concentrator shall not be started frequently it shall be restarted after stopped for 5 minutes 9 When the indicated oxygen concentration is abnormal stop using and contact the dealer or manufacturer for inspection and maintenance 10 Molecular sieve will become aging due to use time and environment etc causing unrecoverable decrease of oxygen concentration amount In case of this phenomenon please contact the dealer or manufacturer to replace the molecular sieve 11 For long term stopping of medical oxygen concentrator be sure to unplug the power cord 7 2 Operation Control panel of medical oxygen concentrator is shown in Fig 3 1 Add water to humidifier bottle Pull out the silicone rubber tube from the bottle take out the bottle Add proper amount of pure water to the bottle the water level shall be between the maximum MAX and minimum MIN water lines and then tighten the bottle cap put into the transparent cover and insert the silicone rubber tube 2 Power
14. is suddenly interrupted power failure medical oxygen concentrator will stop working and send alarm sound trouble light will be red please use after power on 2 Low voltage alarm When grid voltage is less than 190V 10V or 95V SV medical oxygen concentrator will stop working and send alarm sound trouble light will be red LCD displays Low voltage it is recommended to install voltage stabilizer 11 12 7 Use of product 3 Oxygen concentration alarm After medical oxygen concentrator is started and generates oxygen for 10 minutes under the circumstance that the output oxygen flow is not greater than the maximum recommended flow When oxygen concentration is 82 3 or more the Purity Light is green Medical oxygen concentrator works properly When oxygen concentration is within 65 3 82 43 the Purity Light is yellow and sends alarm sound contact the dealer immediately users can temporarily use the machine and please ensure that there is standby oxygen When oxygen concentration is below 65 3 the Purity Light is red and sends alarm sound LCD displays Low purity Please shut down immed iately Use standby oxygen and contact the dealer for inspection or repair 4 High low pressure alarm When circulating system pressure is high medical oxygen concentrator shuts down and sends alarm sound trouble light is red When circulating system pressure is low medical oxygen concentrator sends alarm
15. omization function atomization models only 1 Before using the atomizer please refer to Operating Instruction Manual for Atomizer 2 Open the transparent cover of oxygen concentrator unscrew the plug from the atomization mouth insert the air inlet pipe of the atomizer in the atomization mouth 3 After medical oxygen concentrator is started press the Oxygen Timing buttonfor 5 times oxygen concentrator with atomization function will enter into atomization mode 4 After atomization is finished pull out the air inlet pipe of atomizer tighten the atomization plug 5 Forlong term stopping of medical oxygen concentrator be sure to unplug the power cord 7 3 Alarm functions After medical oxygen concentrator is started and concentrates oxygen for 10 1 during normal operation Power Light Purity Light and Trouble Light e green In case of faults listed in Table 1 medical oxygen concentrator will send audible visual alarm Alarm functions are shown in Table 1 Alarm item Cause Alarm Color of indicators Display of LCD Powspfpere Pone aaen e Yes ToubletightRea NA eae Te sae MESES Yes ToubleligntRea Low voltage 439 A Se E lt 65 3 Yes Purity light Red Low purity High prede pis Yes Toublelight Red N A o odds usb Yes Toublelight Red N A aa Sea Yes ToubletigneRea NA Table 1 Alarm functions 1 Power failure alarm When grid voltage
16. ording to requirements Clean in advance in case of too much dust Oxygen concentrator shall not be started before filtering cotton and foam are installed 5 Power cord is provided according to the power of oxygen concentrator please do not replace arbitrarily 8 2 Cleaning of humidifier bottle To clean first pull out the silicone rubber tube from humidifier bottle take out the humidifier bottle Humidifier bottle is generally cleaned with clean water in case of any water scale rinse with clean water after descaling During cleaning pay attention to cleaning the small air inlet hole at the bottom of the core tube in the bottle so as to keep oxygen unobstructed After cleaning sterilize soak in disinfectant containing available chlorine of 500mg L and rinse with pure water Add proper amount of pure water to the bottle the water level shall be between the maximum MAX and minimum MIN water lines and then tighten the bottle cap put into the transparent cover and insert the silicone rubber tube 8 3 Cleaning of atomizer atomization models only After using the atomizer pour out all residual liquid from atomizing cup rinse with clean water After cleaning sterilize soak in disinfectant containing available chlorine of 500mg L and rinse with pure water 8 4 Cleaning of primary air suction filter filtering sponge and secondary filter Timely cleaning and replacement of primary air suction filter and secondary
17. rection or location of interfering devices 3 Increase the distance between interfering devices and this product iogiprung Control valve Joy uorons ITV 1oouo rs jsneuqxq ATCA Sunv nSo1 oInssoid EE 3 Boa Sz B8 og z2 Zo IOMO uondiospe AIS Ie n29 O A 2 3 Environmental protection description Environmental Protection Description Attention Disposal of waste and residues shall comply with the legal provisions of figu Howe han ch medion oxygen concentrati corresponding countries OLV series medical oxygen concentrator uses molecular sieve as adsorbent adopts the principle of pressureswing adsorption PSA sends the air after filtration into the molecular sieve adsorption tower for the cyclic process of pressurized adsorption and decompressed desorption oxygen of high purity is thereby produced 03 04 4 Structural Features OLV series medical oxygen concentrator mainly consists of principal machine flow meter and humidifier bottle as shown in Fig 2 Translucent cover Front handle Primary air suction filter p p HT I if t Secondary air suction filter il Fig 2 Outline drawing of OLV series medical oxygen concentrator 5 Technical Indicators The requirement of this medical oxygen concentrator for electric shock protection measures is Class II the requirement for electric shock protection
18. rogen at normal temperature oxygen of high purity is thereby produced In order to ensure the safety and effectiveness of medical oxygen concentrator please read this manual carefully before using the machine so as to have a comprehensive understanding and knowledge of the product performance as well as correct operation and maintenance methods Please strictly observe relevant safety precautions during installation use and maintenance 1 1 Functions of oxygen By supplying oxygen to patients the machine can help the treatment of cardiovascular and cerebrovascular diseases respiratory diseases chronic obstructive pneumonia etc and the rehabilitation of anoxic patients Oxygen absorption can improve physical oxygen supply condition and achieve the purpose of oxygenating care It is suitable for the middle aged and elderly people with poor physical fitness pregnant women students and other people who suffer different degrees of physiological hypoxia It can also eliminate fatigue and restore somatic function after heavy physical or mental exertion 1 2 Scope of application It is applicable for oxygen concentration in medical institutions and family etc for the use of anoxic patients 1 3 Product features 1 Plastic casing novel design simple operation stable operation easy maintenance 2 Generate oxygen adopting physical methods with air as raw material without the use of additives only needing power supply with low cost
19. s e g bed couch that may cause tilting or sinking avoid shutdown or oxygen concentration decrease caused by too high temperature due to blockage of air inlet or outlet 5 Medical oxygen concentrator shall be placed smoothly otherwise it will increase the noise during operation 6 If grid voltage is instable and exceeds the range of 220 22V or 110V I15V please install voltage stabilizer before use 7 Be sure to install battery before use otherwise it will lose some alarm functions Open the battery cover in the transparent cover press into the marked polarity 9V alkaline battery If you do not install the battery does not affect the normal use of oxygen but oxygen concentrator can not provide off alarm function 8 Please use safe and qualified socket and the wiring board with safe electricity certification 07 08 7 Use of product 7 1 Use precautions Use Precautions Attention 1 During use ensure unobstructed exhaust at the bottom of medical oxygen concentrator otherwise it may cause internal overheating 2 When the output oxygen is less than the maximum recommended flow oxygen concentration reaches 90 When the flow exceeds the maximum recommended flow oxygen concentration will reduce with the increase of flow 3 Medical oxygen concentrator will reach the specified performance after started for 10 minutes 4 There will be intermittent exhaust sound every 6 seconds around durin
20. sound trouble light is red In case of high pressure or low pressure alarm please use standby oxygen and contact the dealer for inspection or repair 5 Air compressor failure alarm In case of short circuit of air compressor circuit medical oxygen concentrator shuts down and sends alarm sound trouble light is red and medical oxygen concentrator stops running Please use standby oxygen and contact the dealer for inspection or repair 6 Check whether the alarm system works When it is necessary to check whether the alarm system works unplug the power cord when medical oxygen concentrator works normally if the trouble light becomes red and sends alarm sound then the alarm system is normal otherwise the alarm system can not work normally contact the dealer for inspection or repair 8 Maintenance 8 1 Maintenance considerations AN Maintenance Considerations Attention 1 Only the dealers authorized by the manufacturer or the qualified personnel after special training can conduct preventive maintenance or performance adjustment for medical oxygen concentrator 2 In case of medical oxygen concentrator failure contact the dealer or manufacturer for repair Do not disassemble for repair by yourself 3 Clean the humidifier bottle every day Add pure water to humidifier bottle and the water level shall be between the maximum and minimum water levels 4 Regularly clean air suction filtering foam and filtering cotton acc
21. ty 0 15mL min only models with atomization function Input power 260VA 15 models OLV 3 and OLV 3W 300VA 15 models OLV 5 and OLV 5W Power supply 220V 22V 50Hz IHz 110V amp 15V 60Hz 1Hz Total weight 19 5kg models OLV 3 and OLV 3W 22kg models OLV 5 and OLV 5W External dimensions 490x270x560 mm Lx W x H 6 Product Installation 6 1 Unpacking inspection Open the carton box from top of the packing box and then open the plastic bag pull up the medical oxygen concentrator by grasping the front and back handles of medical oxygen concentrator Carefully check whether there is any transport damage to the medical oxygen concentrator and then check the accessories and relevant documents according to the packing list 6 2 Installation precautions Installation precautions Attention 1 Medical oxygen concentrator shall be installed in indoor ventilating places without dust corrosive toxic or harmful gases or smoke Avoid direct sunlight and the distance from walls and other objects shall be greater than 10cm 2 Medical oxygen concentrator shall not be installed in places with open flame fire source danger of flammability or explosion humidity too high or too low temperature Besides it shall not be used ina closed room space 3 No sundries water or oil containers shall be placed on top of medical oxygen concentrator 4 Medical oxygen concentrator shall not be placed on soft surface
22. uth contained 1 atomization S2 2 B models zr Pr Spare connecting tube 1 G R G R 5 of humidifier cup c eo Ne pare primary air Fan ompressor o o 6 suction filtering sponge 1 5 5 7 Spare secondary air pc 1 Fig 7 Electric control chart suction filter User manual c Spot iy gi z 5 E Note if circuit diagram and necessary information are needed due to repair 9 Warranty Card pe 1 please contact the manufacturer 14 3 Oxygen concentration and flow diagram 9 LOM il 10000 T T T1 1 7 7T T 1 7 14 1 Meaning description of graphics symbols and abbreviations l Graphics symbols and Location Name Meaning description l abbreviations 3 If ignoring this information and A Relevant location Warning sign using improperly it may cause Warning personal injury If ignoring this information and Relevant location Attention sign using improperly it may cause Attention injury or loss e It indicates that the medical A Nameplate B type equipment oxygen concentrator is Type B equipment 9 Control valve Adjusting It indicates the direction to knob direction adjust the flow MOVs arunt Pora e E gle phase AC power 110V60Hz oxygen concentrator pp y supply 220 V B Hz or 110V 60Hz Oxygen flow Oxygen flow indicating flow x A L min O jim Oxygen flow init L min Fig 8 Functional diagram of oxygen concentration and flow when the outlet nominal pressure is 0 19 20
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