User Manual
Contents
1. 12 71 Routine Maintenance u Be eerte dH educ ave shack ood 2 7 32 Device Cleaning xxl 2 7 3 Oxygen Sensor Cleanings uus sais ek suma Rm Res ae EENS 2 8 0 SPECIFICATIONS cv ed sede aed xr te eee ete RE Re x ex ER 13 Sul Analyzer 5 e E aE E 3 8 2 Oxygen Diluter 5 1 3 S S OxygennletSupply 2 a ue es Toa dew a eae d 4 9 0 MAXVENTURI SPARE PARTS AND ACCESSORIES 14 9 1 Ineluded With your EEN 4 9 2 Standard Replacement Parts and Accessories 4 9 3 Other Replacement Parts and 4 9 4 Routine 4 10 0 TROUBLESHOOTING ciais Ite Rosas doe su n UR e min n 15 11 0 AIR ENTRAINMENT DEVICES VS 5 15 866 4 Maxtec www maxtec com 1 0 SYSTEM OVERVIEW 1 1 Component Identification d EE E Flow meter ON OFF Button Calibration Button 9 MAX 250 Series Oxygen Sensor Oxygen On Off Valve Inlet Oxygen Fitting Oxygen Control Knob 02 Low Battery Indicator BAT Flow Control Knob 32. 45 90 micron pore size Ambient air inlet filter Single patient use filter see section 2 5 for appropriate filter details 866 4 Maxtec www maxtec com 13 8 3 Oxygen Inlet Supply This device was designed for an oxygen inlet pressure of 3 5 bar 50psi Certain geographical areas use 4 bar 58psi or 5bar 73psi as the standard piped oxygen distribution pressure This device can be operated at these pressures but the flow readings on the flow meter must be corrected for the additional pressure The table below gives correction factors for each flow meter graduation indicating the percent increase in flow from nominal that will result due to the increased inlet pressure at 4bar and 5bar Nominal Flow 4 Bar 5 Bar LPM 6 increase increase 9 0 MaxVenturi SPARE PARTS AND ACCESSORIES 9 1 Included With Your Unit Part Number Item R211P03 Adjustable Flow MaxVenturi Medical Unit with Sensor R211M03 User s Guide and Operating Instructions R125P03 002 MAX 250E Oxygen Sensor RP34P02 Air inlet filter 9 2 Standard Replacement Parts and Accessories Part Number Item R127P35 15 coiled polyurethane oxygen hose with DISS ends 9 3 Other Replacement Parts and Repairs For repair or parts issues not specified in this manual refer to the MaxVenturi service manual R211MO1 or the MaxVenturi preventative maintenance manual R211MO2 9 4 Preventative Maintenance It
3. e ES SE None required Operating 12 15 C 40 59 F 104F Storage 15 C 50 C 5F 122 F Atmospheric 800 1013 mBars Ell Leg EE 0 95 non condensing Power 2 AA Alkaline batteries 2 x 1 5 Volts Battery Life ee ua sassa soga sha s ts approximately 5000 hours with continuous use Low Battery Indication battery icon displayed on LCD Sensor Type u issu lcu n ug puer gg Maxtec MAX 250 series galvanic fuel cell Expected Sensor MAX 250E gt 1 500 000 O2 percent hours minimum 2 years in typical medical applications Dimensions ER ES 7 3 x 6 6 x 5 3 185mm x 167mm x 135mm cette Sete ty ven nee esters e Eh 2 54 Ibs 1 15kg Drift of Measurement lt 1 of full scale at constant temperature pressure and humidity 8 2 Oxygen Diluter Specifications gie c 10 55 LPM adjustable Flow Accuracy E Nominal LPM Accuracy on e FIOS Range asserere det Sng dE 32 100 Oxygen inlet supply pressure nnana nannan aaee 45 55 psig Oxygen inlet filter
4. MaxVenturi OPERATING MANUAL amp INSTRUCTIONS FOR US LE R211P03 211 03 Maxtec TEL 800 748 5355 w i 2305 South 1070 West FAX 801 270 5590 Salt Lake City Utah 84119 email sales maxtec com USA website www maxtec com Authorized Representative NET BV Hommerterweg 286 436 AM Amstenrade 7 01 23 6 The Netherlands e NOTE Before use all individuals using the MaxVenturi should become familiar with the information contained in this Operation Manual Adherence to these instructions is necessary for safe effective product performance Thoroughly read all instructions and labeling provided with this device and any other equipment that will be used 4 CLASSIFICATION Protection against electric 5 Internally powered equipment Protection against Water NEES tua ENN IG eae ee ya tir IPX1 Mode of Operation iu ecco ie ema E AE rer mter md Pu eR edna abor hapu Continuous UE ie EE See section 7 0 Flammable anaesthetic Not for use in presence of a flammable anaesthetic mixture Product Disposal Instructions The sensor batteries and circuit board are not suitable for regular trash disposal Return sensor to Maxtec for proper disposal or dispose according to local guidelines Follow local guidelines for disposal of other components WARRANTY Provided the device is properly maintained and under normal opera
5. 1 3 Product Primary FUNCTORS AER pagan pumas ed 2 2 0 SET UP INSTRUCTIONS iis eh hr AE saa ni ALE E Ex ERA 3 nstallati EE 3 2 4 E e e E E e en BEER 4 22252 100 Oxygen Calibration Sss ssie die ee eb 5 2 3 Device Set Up cos siae eger Pd Re aE A Se 6 2 4 Flow and Oxygen Adjustment isses fe here lr Idee 7 2 4 1 Initial Settings m Rr m OEE ee siga 7 2 4 2 Changing Flow Settings es ace 66 ee cee aqui nR sasa 7 24 3 Changing Oxygen Settings coe me ls abe ee Dae eie Reece Ss 8 2 D IDISDOSAbDl6S ad sorori dre EOS e rb gad dean v a E RE ETE bor aries 8 2 5 l bisposable Patient Circuits rng tnde b Y 8 2 5 2 Disposable Patient Interfaces 8 2 5 el EE 9 3 0 FACTORS INFLUENCING ACCURATE 5 9 3 1 Elevation Pressure Changes 9 3 2 Temperature Effects ori u a ad ds direndas eda nita u ma p RO Od 9 4 0 CALIBRATION ERRORS AND ERROR 5 10 5 0 CHANGING THE BATTERIES 11 6 0 CHANGING THE OXYGEN 5 50 12 7 0 CLEANING AND
6. 0 Hudson Concha single heated limb circuit 780 19 with Concha chamber 382 70 Standard 6 22mm corrugated tube Airlife 001450 or similar Not humidified 2 5 2 Disposable Patient Interfaces Optiflow large nasal cannula Fisher amp Paykel OPT544 Optiflow medium nasal cannula Fisher amp Paykel OPT546 Optiflow Trachaeostomy direct connection Fisher amp Paykel OPT570 Pediatric aerosol mask with 22mm inlet Airlife 001263 or similar Adult aerosol mask Airlife 001206 or similar Trach adaptor T piece Airlife 001500 or similar Superdome oxygen hood Maxtec R300P06 Disposa Hood oxygen hood Utah Medical 5119 Trachaeostomy mask with 22mm inlet loose fitting Airlife 001225 or similar Caution Use of patient circuits or patient interfaces other than these constitutes off label use This can result in device malfunction or harm to the patient 866 4 Maxtec www maxtec com The delivery circuit can be paired with the patient interface circuits listed in the table below Table Instructions To determine the desired flow locate the patient delivery circuit and interface in the two left hand columns Find the corresponding flow rate by reading to the right under columns A through F The lettered columns correspond to the lettered graduations on the flow meter CAUTION The flow rates listed in this table are the result of bench testing the MaxVenturi on the indicated patient circuits and int
7. 5 Digit Display Calibration Needed Indicator Patient Outlet lt Room Air Inlet n 63 9 C 9 Room Air Inlet Filter 866 4 Maxtec www maxtec com 1 2 Symbol Guide The following symbols and safety labels are found on the MaxVenturi e Follow instructions for use On off Button OI ETL Classified conforms to ULSTD 60601 1 Calibration Button Read flow meter float at center Low Battery Do not throw away Follow local guidelines for disposal LPM Liter per minute flow Calibration required cl 96 Percent Adjustable flow Room Air inlet Patient Outlet Manufacturer Lot code Batch code Authorized Representative in SN Nurabar the European Community Catalog Number K Federal Law USA restricts this device to ONIY sale by or on the order of a physican IPX1 Drip Proof A Warning Q Do Not 1 3 Product Primary Functions The primary function of the MaxVenturi is to deliver a mixed gas of oxygen and air to either a heated humidifier system or directly to a patient One of the primary accessories to the MaxVenturi is a Fisher amp Paykel heated humidifier MR850 and the Optiflow high flow patient interface system OPT544 with OPT546 OPT570 Several other patient interface circuits listed in section 2 5 can also be used with the MaxVenturi The MaxVenturi flow meter is labeled to compensate for the back pressure by the humidifier patient interface sy
8. The oxygen level displayed does not go as low as the level indicated in the specifications even with the oxygen control knob completely closed Possible Cause It is very likely the device needs to be calibrated Also check to make sure the humidifier and patient delivery disposables are the correct size and installed correctly with no kinking or occlusion Check the air inlet filter for moisture or dirt replace if necessary Valve cartridges may be worn perform leak test according to preventative maintenance procedure 11 0 AIR ENTRAINMENT DEVICES VS BLENDERS There are basic differences in the operation of a venturi air entrainment device such as the MaxVenturi versus an air oxygen blender Some of the differences are listed in the chart below Further information regarding the use of these types of devices can be found in literature such as R Wilkins et al Egan s Fundamentals of Respiratory Care St Louis Mosby 2003 Maxtec recognizes that the condition of the patient should be the primary factor in deciding which type of treatment is suitable for use Fi02 Range 30 100 Fi02 Range 21 100 Flow is dependent on inlet pressure Flow is less dependent on inlet pressure No low pressure gas alarms Audible alarm for low gas pressure or differential gas pressure Flow is compliant to downstream flow resistance Flow is less compliant to downstream flow resistance Requires only an oxygen supply Requires both oxygen and medi
9. built into the software to detect faulty calibrations oxygen sensor failures and low battery voltage The tests and actions to take if an error occurs are E02 NO SENSOR ATTACHED e Disconnect and reconnect sensor Unit should perform an auto calibration and should read 20 9 If not contact Maxtec Customer Service for possible sensor replacement E03 NO VALID CALIBRATION DATA AVAILABLE e sure unit has reached thermal equilibrium e Perform calibration as described in this manual E04 BATTERY BELOW MINIMUM OPERATING VOLTAGE e Replace batteries CAL Err St 0 SENSOR READING NOT STABLE e Wait for displayed oxygen reading to stabilize when calibrating the device at 100 oxygen e Wait for unit to reach thermal equilibrium Note this can take up to one half hour if the device is stored in temperatures outside the specified operating temperature range CAL Err lo SENSOR VOLTAGE TOO LOW e Repeat calibration routine as described in this manual If unit repeats this error more than three times contact Maxtec Customer Service 10 866 4 Maxtec www maxtec com CAL Err hi SENSOR VOLTAGE TOO HIGH Repeat calibration routine as described in this manual If unit repeats this error more than three 3 times contact Maxtec Customer Service CAL Err Bat BATTERY VOLTAGE TOO LOW TO RECALIBRATE e Replace batteries 5 0 CHANGING THE BATTERIES Bei Ke i Turn off ana
10. cal air supply Flow 0 601 Flow 0 120 LPM Requires large bore tubing Supports any size tubing 866 4 Maxtec www maxtec com 15
11. djustment 2 4 1 Initial Settings Adjust flow to desired setting Set desired oxygen mixture by read flow meter opening 02 knob and read analyzer display Adjust flow if it has changed 2 4 2 Changing Flow Settings lilija Adjust flow to new desired flow rate Readjust oxygen concentration to desired setting and wait for analyzer to equilibrate Temporarily disconnect patient circuit if necessary 866 4 Maxtec www maxtec com 2 4 3 Changing Oxygen Settings ijijiji Adjust O2 knob to desired level Verify flow rate has not changed and and wait for analyzer to equilibrate adjust if necessary Temporarily disconnect patient circuit if necessary Warning Adjusting the oxygen setting too high at low flows may cause oxygen to exit the air inlet port Verify the direction of flow by placing your hand under the air filter to feel for air escape 2 5 Disposables The MaxVenturi for is intended for use with approved disposables Several patient delivery circuits and patient interfaces have been tested and approved for use with the MaxVenturi the approved delivery circuits and patient interfaces are 2 5 1 Disposable Patient Circuits Fisher amp Paykel single heated limb circuit RT202 with humidifier chamber MR290 Airlife single heated limb circuit RT600 850 with humidifier chamber MR29
12. erfaces Actual flows may vary in clinical use depending on patients physiology breathing rate and other factors listed in Section 3 0 Interface Patient D E F ES Adult Pediatric Aerosol Mask 52 722 2 SO Sl 5 E Trech collar Trach T piece Utah Medical Disposa Infant Hood 15 27 38 50 61 72 5 Maxtec Superdome Infant Hood 14 24 35 45 54 64 3 F amp P Medium Nasal Cannula OPT544 12 21 31 40 49 58 2 F amp P Large Nasal Cannula OPT546 22 amp 42 Si Go fe 5 F amp P Tracheostomy Direct Connection 570 14 25 36 47 56 67 Adult Pediatric Aerosol Mask 86 9 Trech collar Trach T piece E Utah Medical Disposa Infant Hood 18 31 46 60 71 84 8 8 Superdome Infant Hood 15 27 38 50 60 69 5 F amp P Medium Nasal OPT544 14 24 34 44 53 62 B F amp P Large Nasal Cannula OPT546 14 25 35 45 54 64 F amp P Tracheostomy Direct Connection OPT570 17 29 41 51 62 73 Adult Pediatric Aerosol Mask 16 29 42 54 66 78 g E 2 Trech collar Trach SS Utah Medical Disposa Infant Hood 16 29 42 54 66 78 5 332 Maxtec Superdome Infant Hood 15 23 Gs 55 F amp P Medium Nasal OPT544 13 23 32 42 51 61 355 F amp P La
13. hed out The device can leak excess oxygen out the entrainment port if the oxygen control knob is turned up too high This can lead to a minor drop in total air flow to the patient and excess oxygen entering the room environment Federal Law USA restricts this device to sale by or on the order of a physician e ATTENTION Indicates a potentially hazardous situation which if not avoided could result in property damage If the MaxVenturi is ever exposed to liquids spills or immersion or to any other physical abuse return to Maxtec for evaluation before use Always remove the batteries to protect the unit from potential leaky battery damage when the unit is going to be stored or not in use for periods exceeding 1 month Replace dead batteries with high quality AA Alkaline batteries Do not use rechargeable batteries with this device Maxtec cannot warranty any damage resulting from misuse unauthorized repair or improper maintenance of the instrument This product is Latex free Avoid usage in environments with greater than 95 relative humidity Maxtec is not affiliated with Pacific Medico 866 4 Maxtec www maxtec com II TABLE OF CONTENTS TONNE Waranty ase EEN Ed EE 1 0 SYSTEM OVERVIEW gt is si kho rh hr ENEE Rees 1 1 1 Component Identification gt e eee ken 2 1 2 Symbol Guide s re 2
14. is recommended by Maxtec that service personnel check the function of the device once a year or as needed The MaxVenturi Preventative Maintenance Manual will guide you through the process It is available for free at www maxtec com Equipment in need of factory repair shall be sent to Maxtec Customer Service Department 2305 South 1070 West Salt Lake City Utah 84119 Include RMA number 14 866 4 Maxtec www maxtec com 10 0 TROUBLESHOOTING Problem The flow does not reach 55LPM even with the flow valve wide open Possible Cause The pressure of your piped oxygen supply in your hospital may be low Also check to see if the float in the flow meter is sticking Tip the unit back and forth Ball should roll freely If it seems to stick or hesitate return the unit to Maxtec for service If you cannot detect the problem contact the Maxtec Service Department by calling the number listed in this manual Do not disassemble the device to try to detect an internal problem Problem The oxygen level on the display does not reach 100 even with the oxygen control knob fully open Possible Cause Check if the device needs to be calibrated If you wish to use the device at oxygen concentrations closer to 100 oxygen it is best to calibrate the device at 100 oxygen Refer to the calibration section in this manual and follow the 100 oxygen calibration routine If this does not solve the problem contact the Maxtec Service Department Problem
15. ll MaxVenturi device should be overhauled and serviced a minimum of every 4 years with R211P30 001 and R211P30 002 to replace all O rings valves and knobs 7 2 Device Cleaning When cleaning or disinfecting the exterior of the MaxVenturi take appropriate care to prevent any solution from entering the device Do not immerse device in fluids MaxVenturi external surfaces may be cleaned using a cloth moistened with 65 70 isopropyl alcohol water solution or a germicidal wipe 7 3 Oxygen Sensor Cleaning e Clean the sensor with a cloth moistened with 65 70 isopropyl alcohol water solution e Maxtec does not recommend use of spray disinfectants because they can contain containcontainsalts which can accumulate in the sensor membrane and impair readings e oxygen sensor is not intended for steam ethylene oxide or radiation sterilization 12 866 4 Maxtec www maxtec com 8 0 SPECIFICATIONS 8 1 Analyzer Specifications Measurement 0 100 iei Eege dd adele ade AE 0 1 Accuracy and 1 of full scale at constant temperature R H and pressure when calibrated at full scale Total Accuracy 3 actual oxygen level over full operating temperature range Response IME ome us sy Deren ee EE 90 of final value in approximately MAX 250E x15 seconds at 23 C Warm up TIME L seus nbl bue e ee E
16. lyzer Use screwdriver to remove four 4 screws away from unit in back of device Remove battery pack Remove two 2 Ensure correct from rear wall of cavity depleted batteries orientation and install Use caution with wires two 2 new batteries Turn on analyzer to Reattach battery pack Re attach front cover verify power torear Meera with four 4 screws caution to not pinch wires between cover and body of device 866 4 Maxtec www maxtec com 11 6 0 CHANGING THE OXYGEN SENSOR Turn off analyzer Disconnect sensor from Remove sensor from sensor cable sensor port Dispose of sensor according to local guidelines Note For new sensor installation follow procedure for new sensor installation in section 2 1 7 0 CLEANING AND MAINTENANCE Store the MaxVenturi at a temperature similar to that of its daily use 7 1 Routine Maintenance Maxtec recommends the performance check listed in the MaxVenturi Preventive Maintenance Manual be conducted prior to placing the MaxVenturi into Clinical use and periodically tune after If the MaxVenturi does not function as described in the performance check discontinue use of the device pending service by trained technicians or contact your Maxtec distributor or Maxtec at 2305 South 1070 West Salt Lake City Utah 84119 The MaxVenturi s flow and O2 adjustment valves should be replaced as needed The fu
17. m air 20 9 will result in an incorrect measurement of oxygen concentration 2 minutes Shut off Oxygen supply Remove sensor from Wait two 2 minutes port for sensor to equilibrate in room air Press and hold CAL Place sensor in port button for three 3 seconds Wait for display to read 20 9 866 4 Maxtec www maxtec com 2 2 2 100 Oxygen Calibration Plug room air inlet Turn ON OFF valve to the ON position 2 minutes Turn flow knob a few Wait 2 minutes for Press and hold CAL turns to flow gas sensor to equilibrate button for three 3 seconds Wait for display to read 100 Remove plug from Insert filter into room room air inlet air inlet Note Analyzer will read Cal Err St if the sample gas is not stable or if the oxygen sensor has reached its end of life 866 4 Maxtec www maxtec com 5 2 3 Device Set up Attach MaxVenturi to Connect oxygen Insert air inlet filter in IV pole Twist knob to supply line from wall to room air inlet port tighten MaxVenturi 24 Attach patient circuit to Turn ON OFF valve to on MaxVenturi outlet position Note Patient circuit and patient interface should be assembled according to manufacturers instructions supplied with them 866 4 Maxtec www maxtec com 2 4 Flow and Oxygen Settings A
18. n is detected in the flow meter or if the float sticks in the flow tube discontinue use immediately and return the device to Maxtec for service ever install the sensor in any location other than the sensor port in the device SENSOR WARNINGS The Maxtec MAX 250 oxygen sensor is a sealed device containing a mild acid electrolyte lead Pb and lead acetate Lead and lead acetate are hazardous waste constituents and should be disposed of properly or returned to Maxtec for proper disposal or recovery S Do not use ethylene oxide sterilization Do not immerse the sensor in any cleaning solution autoclave or expose the sensor to high temperatures Dropping or severely jarring the sensor after calibration may shift the calibration point enough to require recalibration 866 4 Maxtec www maxtec com e CAUTION Indicates a potentially hazardous situation if not avoided could result in minor or moderate injury and property damage The MaxVenturi is intended for use with specific patient interface configurations The numbered scale is intended for use with Fisher amp Paykel heated humidifier MR850 and the Optiflow high flow patient interface system OPT544 OPT546 OPT570 The lettered scale Labeled A through F is intended for the alternate patient circuits found on the chart provided in Section 2 Never install the sensor in a location that will expose the sensor to patient exhalation or secretions Only use Maxtec a
19. ntially hazardous situation if not avoided could result in death or serious injury S S This device is not intended for use with life supporting devices systems Failure to comply with the warnings and precautions in this manual could result in instrument damage and possibly jeopardize the wellbeing of the patient and or health care professional Improper use of this device can cause inaccuracy of flow antl oxygen readings which can lead to improper treatment hypoxia or hyperoxia or other patient injury or discomfort Follow the procedures outlined in this user manual Do not use this device near any type of flame or flammable explosive substances vapors or atmosphere 0perating the oxygen analyzer in these environments may result in fire or explosion This device in its entirety including electronics is not suitable for use in the presence of flammable anaesthetic mixtures or in an atmosphere of explosive gases Operating the oxygen analyzer in these environments may result in fire or explosion Not for use in an MRI environment Ifthe O2 drifts away from the level to which it was set check to make sure the nasal prongs on the patient interface are not occluded by sputum or the nasal septum Flow restriction to the circuit or patient interface will cause the oxygen level to increase Flow restriction downstream of the venturi unit will not be detected by the flow meter This device does not have any alarms for interruption in ox
20. pproved accessories and replacement parts Failure to do so may seriously impair the MaxVenturi s performance Repair or alteration of the MaxVenturi beyond the scope of the maintenance instructions or by anyone other than authorized Maxtec service personnel could cause the product to fail to perform as designed Use of the MaxVenturi near devices that generate strong electrical fields may cause erratic readings This device has a visual low battery alarm but no audible alarm Calibrate the MaxVenturi weekly when in operation or if environmental conditions change significantly i e Temperature Humidity Barometric Pressure refer to Calibration sections of this manual The device will assume a percent oxygen concentration when calibrating Be sure to apply 100 oxygen or room air concentration to the device during calibration or the device will not calibrate correctly See section 2 2 Do not use ethylene oxide sterilization Do not immerse the device in any cleaning solution autoclave or expose the device to high temperatures Use with any other patient interface system may result in false readings from the flow meter The MaxVenturi is not intended for steam ethylene oxide or radiation sterilization Do not clean with ethanol or acetone After cleaning and before use on a patient attach the device to an oxygen supply and allow the device to run at high flow for several minutes to allow any cleaning fluids or vapors to evaporate and be flus
21. rge Nasal OPT546 14 24 34 44 54 65 F amp P Tracheostomy Direct Connection OPT570 15 27 39 50 61 72 2 5 3 Inlet Filter e Air Safety Ltd Cat No RP34P02 866 4 Maxtec www maxtec com 3 0 FACTORS INFLUENCING ACCURATE READINGS 3 1 Elevation Pressure Changes e Changes in elevation result in a reading error of approximately 1 of reading per 250 feet e A change in altitude greater than 500 ft will require sensor recalibration e his device does not automatically compensate for changes in barometric pressure or altitude If the device is moved to a location of a different altitude it must be recalibrated before use see section 2 2 3 2 Temperature Effects The MaxVenturi will read correctly within 3 when operating at thermal equilibrium within the operating temperature range of 15 C 40 C 59 F 104 F The device must be thermally stable when calibrated and allowed to thermally stabilize after experiencing temperature changes before readings are accurate For these reasons it is recommended to e Perform the calibration procedure at a temperature close to the temperature at which the device will be operated e Allow adequate time for the sensor to equilibrate to a new ambient temperature ATTENTION CAL Err St may result from a sensor that has not reached thermal equilibrium 4 0 CALIBRATION ERRORS AND ERROR CODES The analyzer has a self test feature
22. stem The numbered scale on the flow meter that corresponds to the compensated flow rate for the Fisher amp Paykel Optiflow System The lettered scale on the flow meter corresponds to the flow rates for the other patient interface circuits listed in the chart in Section 2 5 2 866 4 Maxtec www maxtec com gt 2 0 SET UP INSTRUCTIONS 2 1 Sensor Installation 30 90 minutes Remove Max 250 sen Wait 30 to 90 minutes sor from package and for sensor to stabilize pull off barrier film S Attach sensor to Press and hold CAL Insert sensor into port sensor cable button for three 3 on MaxVenturi seconds Wait for display to read 20 9 866 4 Maxtec www maxtec com 2 2 Calibration A new calibration is required when e measured percentage in 100 Oo is below 97 0 e The measured Oo percentage 100 Oo is above 103 0 e The CAL reminder icon is blinking at the bottom of the LCD e You are unsure about the displayed O2 percentage see Factors Influencing Accurate Readings in section 3 0 The MaxVenturi can be calibrated at 100 oxygen or room oxygen 20 9 The One Touch calibration will assume one of these two concentrations 2 2 1 Room Air Calibration Caution Turn off all flow of gas to the MaxVenturi before calibration in room air Calibrating the oxygen sensor in a gas concentration other than roo
23. ting conditions Maxtec warrants the MaxVenturi to be free from defects of workmanship or materials for a period of 2 years from the date of shipment from Maxtec Based on Maxtec s product evaluation Maxtec s sole obligation under the foregoing warranty is limited to making replacements repairs or issuing credit for equipment found to be defective This warranty extends only to the buyer purchasing the equipment directly from Maxtec or through Maxtec s designated distributors and agents as new equipment Maxtec warrants the MAX 250E oxygen sensor in the MaxVenturi to be free from defects in material and workmanship for a period of 2 years from Maxtec s date of shipment in a MaxVenturi unit Should a sensor fail prematurely the replacement sensor is warranted for the remainder of the original sensor warranty period Maxtec recommends that the control valve o rings be replaced or serviced every 2 years Routine maintenance items such as batteries are excluded from warranty Maxtec and any other subsidiaries shall not be liable to the purchaser or other persons for incidental or consequential damages or for equipment that has been subject to abuse misuse misapplication alteration negligence or accident These warranties are exclusive and in lieu of all other warranties expressed or implied including warranty of merchantability and fitness for a particular purpose 866 4 Maxtec www maxtec com e WARNINGS A Indicates a pote
24. ygen supply Allow oxygen reading to stabilize before adjusting oxygen content This device does not have any alarms for oxygen level high or low alarms ever allow excess length of tubing near the patient s head or neck which could result in strangulation Use only Maxtec replacement sensors Use of any other sensor will void warranty and may lead to product damage product malfunction improper treatment to patient hypoxia or hyperoxia Do not attach a humidifier or any other source gas to the room air inlet It should be occupied at all times by the filter listed in the disposables list see page 8 The inlet filter prevents entrainment of ambient contamination and silences venturi noise The filter provided with the MaxVenturi is single patient use only Use of this device with a pressurized oxygen bottle may result in inaccurate oxygen concentration readings when used above 40 LPM and at high oxygen concentrations High tank pressures result in cooling oxygen supply temperatures which affect the accuracy of the oxygen sensor It is suggested that the device be connected with a long supply hose Use a 15 ft supply hose where possible Maxtec P N R127P35 Use patient circuits that are approved for use with the manufacturer s humidifier as listed in their individual instructions for use Do not attempt to clean the inside of the flow meter If any malfunction is detected in the function of the flow meter if any debris or contaminatio
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