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Oxygen Concentrator Service Manual

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1. ITEM NUMBER DESCRIPTION ITEM NUMBER DESCRIPTION 1 BE187 2 BEDS ASSY 51018 1 VISIONAIRE VISIONAIRE 3 8 SC037 4 SCREW SELFTAP CABINET HANDLE 2 BE187 4 BEDS ASSY 51015 1 VISIONAIRE 2 9 SC084 1 SCREW SELFTAP REGULATOR 3 CA261 1 CABINET HANDLE PLATE 10 SC119 1 SCREW OXYGEN MONITOR 4 CA283 1 CABINET CENTER SECTION 11 TA004 1 TANK ASSY VOLUME VISIONAIRE 2 ONLY 5 CB114 1 CIRCUIT BOARD OXYGEN MONITOR 12 TA121 1 TANK MIXING VISIONAIRE VISIONAIRE 3 6 FO149 1 FOAM HANDLE PLATE 13 TW002 1 TIE WRAP SIEVE BED 7 RG096 1 REGULATOR 14 TW017 1 TIE WRAP HEAT STABILIZED CENTER SECTION ASSEMBLY MN138 1 Rev H 02 14 PART PART ITEM NUMBER DESCRIPTION ITEM NUMBER DESCRIPTION 1 AL018 1 ALARM BUZZER 13 FO146 1 FOAM FAN MOUNT 2 CA284 1 CABINET COMPRESSOR ENCLOSURE 14 MO025 1 MOUNT COMPRESSOR 3 CB102 1 CIRCUIT BOARD MAIN 15 MU043 1 MUFFLER EXHAUST TOP HALF 4 CB102 3 CIRCUIT BOARD MAIN V2 V3 16 MU083 1 MUFFLER CHAMBER 5 CC006 6 CAPACITOR 220 240V 17 SC003 3 SCREW SELFTAP COMPRESSOR MOUNT 6 CC006 8 CAPACITOR 120V 18 SC037 4 SCREW SELFTAP ALARM CB 7 CC006 10 CAPACITOR 230V 19 TW001 3 TIE WRAP 4 8 F0005 3 FITTING MUFFLER 20 017 1 5 9 FNO19 1 FAN 115V V2 V3 21 TU165 104 TUBING BRAIDED SILICONE 10 FNOA1 1 FAN 115V VISIONAIRE 22 TU180 064 TUBING EXHAUST 11 FNO46 1 FAN 230V VISIONAIRE 23 COMPRESSOR ASSY 1
2. A restrictive exhaust muffler which does not allow the waste purge gas to exit the system freely Operate the unit with the exhaust muffler disconnected to see if the operating pressure returns to normal An improperly operating circuit board or solenoid valve Confirm that the circuit board and solenoid valve function properly Contaminated sieve beds Change the sieve beds 5 1 2 Low Operating Pressure If the oxygen concentration level at the desired liter flow is within AirSep s specifications no service is required even if operating pressure is low If concentration is below specifications at the desired liter flow rate with low operating pressure this may indicate any of the following A restriction in the compressor intake path may be limiting the amount of room air available to the compressor 26 MN138 1 Rev H 02 14 Check compressor intake path for obstruction Clean remove obstruction and verify normal operating pressure returns An improperly operating circuit board or solenoid valve Confirm that the circuit board and solenoid valve function properly A leak in the unit which allows system pressure to escape Leak test unit A compressor with reduced output If it is below specifications replace or repair the compressor 5 2 General Troubleshooting Before reviewing the troubleshooting chart the following steps may be useful to isolate any malfunctions 1 2 Turn on the concentrat
3. 3 Connect the humidifier bottle oxygen tubing and cannula to the oxygen outlet 4 Turn the flowmeter adjustment knob counterclockwise until the ball reaches the stop at the top of the flow meter wide open Remove the back panel of unit Pull outward on the regulator knob to unlock it 7 Turn the regulator knob clockwise until flow meter ball is set 2 liter above the maximum flow rate 8 Push in the regulator knob to lock the setting 9 Turn the flowmeter adjustment knob clockwise until the flowmeter indicates maximum flowrate 10 Reconnect back panel position and allow unit to run five ON When this back pressure correction 18 no longer required follow the normal regulator setting procedure as described in Section 4 8 1 4 8 4 Product Regulator Cleaning or Rebuilding Clean or rebuild the product regulator if the flow meter ball fluctuates more than 1 4 liter or if the regulator cannot be adjusted for lockout 1 Set the unit s 1 0 switch to the 0 position and unplug the power cord 2 Remove the back panel 3 Use large pliers to unscrew the bonnet of the product regulator which contains a large spring Adjust the product regulator fully counterclockwise to unload the spring This makes disassembly and reassembly easier NOTE 4 Remove the diaphragm Clean or replace it 5 Using a Phillips head screwdriver unscrew the diaphragm stem guide located in the ce
4. Replace or reconnect temperature probe Compressor runs with 3 beep intermittent low pressure alarm and low oxygen concentration Leak Reduced atr Intake Weak compressor Faulty circuit board Leak test and repair leak Check compressor intake path for obstruction Clean remove obstruction Replace compressor Replace circuit board Compressor does not start 1 0 power switch in I position intermittent 3 beep low pressure alarm and cabinet fan turns Extreme cold start Faulty electrical connection for compressor Faulty capacitor Faulty circuit board Allow unit to reach room temperature e Check electrical connections for compressor Replace capacitor Replace circuit board 4 beep high pressure alarm is activated and both compressor and valves do not operate Restriction in exhaust muffler Contaminated sieve beds Faulty solenoid valve Faulty circuit board Replace exhaust muffler Replace sieve beds Replace solenoid valve manifold Replace circuit board 28 MN138 1 Rev H 02 14 Problem Probable Cause Solution Compressor relief valve activates popping sound Faulty electrical connection at waste valve Faulty solenoid valve coil Acceptable rating 713 837 Ohms Contaminated sieve beds Faulty circuit board Faulty relief valve Repair electrical connection Replace valve coil Use of a
5. Reference to arrow indicating airflow direction must be made Improper installation of cabinet fan may result in unit to overheat and shutdown 1 Locate arrow on fan indicating airflow direction The arrow for airflow must be pointing towards the compressor when properly installed 2 Install wire connections onto new fan Depending on the replacement fan version being installed wire connections on fan should be positioned either in the top left or lower right positions when properly installed 3 Replace foam strip around housing of new fan Opening of foam should be positioned at the upper right corner of fan when installed and wires from fan connections routed through same opening of foam at this location 4 Position both foam strip and cabinet fan into fan recess area located at the back of the compressor enclosure When properly installed both foam strip and fan must be flush with the edge of fan recess area 5 Return compressor compartment to the original position being careful not to pinch any tubing or wires between compressor enclosure and center section of unit 6 After removing tape from the top of each sieve bed reconnect and tighten fittings Small tubing from the bottom sieve beds and the unit s power cord should be located inside and underneath the tubing connected to sieve beds 7 Reconnect and secure tubing to equalization valve using tie wraps 8 Reconnect wire connectors to main circuit board labeled AC Po
6. This enables proper treatment as prescribed by a qualified licensed health care provider physician If patients experience any discomfort or the unit alarms they must notify their licensed health care provider physician immediately You as the Equipment Provider are responsible to see that each patient receives the Patient Manual Explain each step in the operation of the unit to the patient in reference to this manual Smoking while using oxygen is the number one cause of fire injury and death You must follow these safety warnings Do not allow smoking candles or open flames within the same room of the device or oxygen carrying accessories WARNING Smoking while wearing an oxygen cannula may result in facial burns and possibly death Removing the cannula and placing it on surfaces such as bedding sofas or other cushion material will cause a flash fire when exposed to a cigarette heat source or flame If you smoke you must follow these 3 life saving steps turn off the oxygen concentrator take off the cannula and leave the room where this device is located No Smoking Oxygen in Use signs must be prominently displayed in the home or where the oxygen concentrator is in use Patient and their caregivers must be informed about the dangers of smoking in the present of or while using medical oxygen This device supplies high concentration oxygen that promotes rapid burning Do not allow smoking or open flames within
7. follow the steps below 1 2 3 Set the unit s 1 0 switch to the 0 position and unplug the power cord Remove both front and back panels Using a Phillips head screwdriver remove screw securing the right mounting plate assembly from the center section Carefully pull out assembly and disconnect the power cord wire connections from the hourmeter white and circuit breaker black From the back of unit completely pull power cord out of holder and unwrap the power cord wires from the ferrite bead ring Please note configuration of wires around the ferrite ring at this time Do not dispose ring Using large adjustable pliers remove power cord strain relief from base of unit by pressing in the top and bottom of the strain relief while pulling out towards you at the same time Power Cord Installation To install a new power cord follow the steps below 1 2 8 9 Place both new power cord and old power cord together side by side to determine location to install strain relief on new power cord Route both wire ends of new power cord into entry location on the base of unit and pull power cord through hole to the pre determined location to install strain relief to new power cord Install strain relief onto power cord and secure power cord to base Locate ferrite ring and insert both wire leads from new power cord into the center of ferrite ring so that the outside insulation of power cord is flush with the insid
8. The VisionAire uses five two way solenoid valves two feed two waste and one equalization Each valve has an open energized and closed de energized position As the VisionAire operates two or three valves are always energized The solenoid valves of the VisionAire unit require no scheduled maintenance 4 4 1 Valve Manifold Replacement Valve Manifold Removal To remove the valve manifold follow the steps below 1 2 3 Set the unit s 1 0 switch to the 0 position and unplug the power cord Remove both front and back panels Remove the compressor assembly by following the compressor removal procedure outlined under section 4 3 1 Remove tubing attached to the exhaust muffler assembly Do not remove muffler assembly Disconnect small tubing from the in line adaptor leading to the sensor located on the circuit board Disconnect the wire connectors labeled AC Power and PowerSw from circuit board If equipped with an 2 oxygen monitor also disconnect wire connectors labeled O2 LED and Sensor From back of unit disconnect tubing connections at the equalization valve and disconnect fittings from top of both sieve beds Temporarily seal sieve bed openings with tape to prevent the sieve material from being exposed to the moisture in room air Prolonged exposure to room air NOTE 8 results in contamination and permanent damage to the sieve material With adjusting compressor enclosure alternating pulling out to
9. cord Remove back panel Carefully remove valve retaining clip from coil to be replaced Disconnect both wire connectors from solenoid valve lift coil off of valve stem Install new coil on valve stem reinstall coil retaining clip and reconnect both wire connectors to coil 6 Valve coil retainer clips must be installed correctly so that the open ends are pointing downward on top of valve coil 4 5 Sieve Beds The VisionAire unit utilizes two sieve beds each containing molecular sieve The unique property of molecular sieve enables it to physically attract nitrogen when air passes through this material thus producing high concentrated oxygen oe While one sieve bed produces high concentration oxygen the other is purged of the nitrogen it adsorbed collected while it concentrates oxygen Each adsorber sieve bed produces oxygen and delivers it to the mixing tank VisionAire 2 uses different sieve beds BE187 4 thanVisionAire or VisionAire 3 BE187 2 The beds look the same but use different NOTE molecular sieve 51015 1 for V2 4 5 1 Sieve Bed Replacement Temporarily seal sieve bed openings with tape to prevent the sieve material from being exposed to the moisture in room air Prolonged exposure to room air results in contamination and permanent damage to the sieve material MN138 1 Rev H 02 14 4 6 Leaks can be so small in air loss that oxygen concentration is not affected immediately The sieve material can bec
10. flow meter ball should drop to zero and the 6 beep alarm should be activated Note not all units were originally manufactured with a no flow alarm Units equipped with main circuit boards prior to rev R will not have this feature Oxygen Concentration Test and Specification To ensure that the unit s output of oxygen is within specification you must perform a test of the oxygen concentration Test the unit upon delivery to a patient and at periodic intervals Equipment Providers need to establish and implement a protocol to check oxygen concentration 1 If a humidifier bottle is used disconnect it 2 Connect a calibrated oxygen concentration analyzer to the oxygen outlet 3 Verify that the product flow rate delivered by the unit matches the patient s prescription and does not exceed the capacity of the unit 4 Set the unit s 1 0 power switch to the I position Allow approximately five minutes for the oxygen concentration to stabilize Take oxygen concentration readings and verify levels are within specification at the liter flow being tested 5 Disconnect the oxygen analyzer and reconnect the humidifier bottle Do not measure oxygen concentration output after the product stream passes through a humidifier bottle or erroneous readings will result MN138 1 Rev H 02 14 3 0 General Instructions 3 1 Instructions It is important that patients thoroughly understand how to operate the AirSep VisionAire unit
11. position allow unit run five 4 8 2 Product Regulator Lockout Take the following steps to limit the maximum flow of the oxygen concentrator NOTE Sy u It may be desirable to provide one additional liter or oxygen flow above the prescribed level of concentration in using the lockout feature Plug in the unit Set the unit s 1 0 power switch to the minutes to build up pressure If used connect the humidifier bottle oxygen tubing and cannula to the oxygen outlet Remove the back panel of unit Turn the flow meter adjustment knob counterclockwise until it stops wide open Pull outward on the regulator knob to unlock it Turn the regulator knob counterclockwise to decrease the setting until the flow meter registers the maximum flow desired Push in the regulator knob to lock the setting Reconnect the back panel 5 position and allow the unit to run five 18 MN138 1 Rev H 02 14 When the lockout adjustment is longer required follow the normal NOTE regulator setting procedure as described Section 4 8 1 4 8 3 Back Pressure Correction at Maximum Flow Rate In some cases additional lengths of oxygen tubing with a humidifier bottle can increase back pressure and limit oxygen flow below the maximum flow setting To achieve full maximum flow setting use the following procedure 1 Plug in the unit 2 Set the unit s 1 0 power switch to the minutes to build up pressure
12. 14 Troubleshooting 5 1 Operating Pressure Test Testing the operating pressure is a useful diagnostic tool when a concentrator has low oxygen concentration and requires servicing Units functioning normally do not require operating tests Use the following procedure to test the operating pressure of the unit 1 Set the unit s 1 0 power switch to the 0 position and unplug the power cord 2 Remove the front panel of unit 3 Locate the pressure test port location black tube located on the top right side between the compressor enclosure and center section Using a pressure test adapter AirSep p n 1257 2 connect the pressure gauge to the test port 4 Plug in the power cord and set the unit s 1 0 power switch to the 1 position Set the flowmeter to the maximum flow rate for the unit and allow it to run five minutes 6 Observe the maximum and minimum readings on the pressure test gauge 2 The maximum reading should not exceed VisionAire 30 psig 207 kPa VisionAire 2 25 psig 172 kPa VisionAire 3 25 psig 172 kPa The minimum reading should not be less than VisionAire 8 psig 55 kPa VisionAire 2 7 psig 48kPa VisionAire 3 7 psig 48kPa When you turn the unit on the system pressure always registers higher than normal for the first few minutes of operation NOTE 5 1 1 High Operating Pressure Higher than normal operating pressure may indicate any of the following
13. 2 047 1 FAN 230V V2 V3 24 VALVE BLOCK ASSY COMPRESSOR ENCLOSURE ASSEMBLY MN138 1 Rev H 02 14 ITEM NUMBER DESCRIPTION ITEM NUMBER DESCRIPTION 1 CL035 1 CLAMP WIRE 10 MO027 1 MOUNT RUBBER SPRING 2 0416 1 COMPRESSOR 115V 60Hz 36 STROKE 11 OR032 1 O RING 3 0416 2 COMPRESSOR 230V 50Hz 44 STROKE 12 SC123 3 SCREW END 4 0416 3 COMPRESSOR 230V 60Hz 36 STROKE 13 SC133 1 SCREW COMPRESSOR COMPRESSOR 230V 50Hz 26 STROKE 5 0416 5 WISIONAIRE 2 3 14 8 133 2 SCREW SPRING MOUNT COMPRESSOR 115V 60Hz 26 STROKE 6 CO416 6 WISIONAIRE 2 3 i 15 SP021 1 SPRING 7 0432 1 COMPRESSOR END CAP ASSY 16 059 1 WASHER SPRING MOUNT 8 F0644 1 FITTING BRASS ELBOW 17 4 1 VALVE RELIEF 9 1196 1 FILTER COMPRESSOR END CAP EXTERIOR tii l A AIRSEP COMPRESSOR ASSEMBLY MN138 1 Rev H 02 14 PART ITEM NUMBER DESCRIPTION ITEM NUMBER DESCRIPTION 1 F0037 4 FITTING BRASS MULTIBARB FEED WASTE 10 OR022 1 O RING MOUNTING BOLT 2 F0134 1 FITTING COMPRESSION 5 16 11 SC118 1 SCREW MOUNTING BOLT 3 FO494 1 FITTING BRASS 12 TU165 104 TUBING BRAIDED SILICONE 4 517 1 FITTING BRASS EQ 13 TU152 070 TUBING PRESSURE PORT 5 F0645 1 FITTING SWIVEL HOSE BARB 14 TU180 064 TUBING
14. 334 033 i mp E ta z EE i x g a WIRING DIAGRAM VISIONAIRE 2 VISIONAIRE 3 MN138 1 Rev H 02 14 LEFT FEED BROWN gt Q RIGHT LEFT RIGHT WASTE WASTE kasa VALVE WIRE HARNESS MN138 1 Rev H 02 14 DESCRIPTION ITEM PART DESCRIPTION NUMBER NUMBER 1 CA262 1 CABINET MOUNTING PLATE SWITCH 15 F0724 1 FITTING AIR OUTLET 2 CA263 1 CABINET MOUNTING PLATE FLOWMETER 16 FA038 1 FASTENER RUBBER KEEPER 3 CA265 2 CABINET BACK PANEL ASSY 17 033 2 FLOWMETER 1 4 FITTING 4 CA268 1 CABINET ROLLER BASE ONLY 18 067 1 FLOWMETER 1 8 FITTING 5 CA271 1 CABINET COMPRESSOR COVER 19 FM070 1 FLOWMETER 2 LPM 6 CA283 1 CABINET CENTER SECTION 20 FM073 1 FLOWMETER VISIONAIRE 3 7 CA280 1 CABINET FRONT PANEL ASSY 21 HM009 2 HOUR METER 8 CA280 2 CABINET FRONT PANEL ASSY W O2 MONITOR 22 LA360 1 LABEL AIR OUTLET 9 CA285 1 CABINET FRONT PANEL ASSY VISIONAIRE 3 23 MI268 1 HUMIDIFIER STRAP CABINET FRONT PANEL ASSY W O2 MONITOR 10 CA285 2 VISIONAIRE 3 24 SC111 1 SCREW 1 4 TURN CABINET FRONT PANEL ASSY W O2 MONITOR 11 CA285 3 VISIONAIRE 2 25 SC112 1 SCREW RETAINER 1 4 TURN 12 CR001 5 CIRCUIT BREAKER 220 240V 26 SW114 1 SWITCH ON OFF 13 CR001 6 CIRCUIT BREAKER 115V 27 WA055 1 WASHER INTERNAL LOCK TOOTH 14 CS001 1 CASTER MAIN ASSEMBLY MN138 1 Rev H 02 14
15. EXHAUST 6 FO147 1 FOAM FEED FITTING 15 001 4 TIE WRAP 4 7 FO148 1 FOAM EXHAUST FITTING 16 TWO16 1 TIE WRAP 4 88 LG 8 064 1 HARDWARE COIL ECLIP 17 011 2 TIE WRAP 2 83 LG 9 198 1 MANIFOLD BLOCK 18 VA374 1 VALVE COIL BACK VIEW gt p Se FEED FITTING 7 EXHAUST e FITTING ii x ar F 2 tai Ge ES 2 o l T Ss i U 1 0 D jie i EXHAUST CONPR S SORAN MUFFLER A G gt saa ti VALVE MANIFOLD ASSEMBLV MN138 1 Rev H 02 14
16. VAC 50 Hz 1 5 amps 175 watts VisionAire 2 VisionAire 3 Power Failure Low Oxvgen Concentration with optional Oxvgen Monitor Low Pressure High Pressure High Temperature No Flow Class II Tvpe B 41 to 105 F 5 to 40 C 4 to 140 F 20 to 60 C 15 95 non condensing MN138 1 Rev H 02 14 2 0 Operational Check and Oxygen Concentration Test 2 1 Description of Operation Air is drawn into the VisionAire Oxygen Concentrator For overall sound efficiency before air enters the compressor it passes through the unit s intake muffler Pressurized air then exits the compressor and moves to the valve manifold The valve manifold incorporates the use of five two way solenoid valves which control the flow of air and oxygen in and out of the molecular sieve beds The unique property of molecular sieve enables it to physically attract adsorb nitrogen when air passes through this material thus producing high concentration oxygen There are two sieve beds while one produces high concentration oxygen the other is purged of the nitrogen it adsorbed collected during this pressure swing adsorption PSA cycle Each adsorber produces oxygen and delivers it to the product tank Oxygen exits the product tank through a pressure regulator flow control valve flow meter and finally exits the unit The VisionAire unit delivers up to 95 5 oxygen at the prescribed flow rate 2 2 Operation Check AirSep tests every VisionA
17. Wire Harness WH105 1 Main Assembly Center Section Assembly Compressor Enclosure Assembly Compressor Assembly Valve Manifold Assembly vi m m O b gt MN138 1 Rev H 02 14 1 0 Introduction 1 1 Equipment Provider Responsibility All Equipment Providers of the VisionAire Oxygen Concentrator must assume responsibilities for handling operational check out patient instruction and oxygen concentration checks These responsibilities are outlined below and throughout this manual As an Equipment Provider you must do all of the following WARNING WARNING Inspect the condition of each VisionAire unit immediately upon delivery to your business location Note any sign of damage on the delivery receipt and report it directly to both the freight company and AirSep Corporation immediately Check the operation of each VisionAire unit before delivery to a patient Confirm the oxygen concentration level is within specifications as referred to in Section 2 4 Test the power disconnect alarm as described in Section 2 3 of this manual Deliver VisionAire units only to patients authorized by a licensed health care provider or physician s prescription The VisionAire oxygen concentrator must not be used as a life supporting device A backup supply of oxygen must be available Instruct patients how to use VisionAire in conjunction with the Patient Manual Instruct patients to notify their licensed health care provider
18. acitor to avoid possible damage when front cover is installed 6 Compressor wires must be allowed to freely move within tie wrap loop Care must be taken to assure compressor wires are not pulled by loop of tie wrap mount when properly installed If new tie wrap is needed it is important to engage only the first few notches of the tie wrap 7 Before installing compressor cover assure compressor wires are not in contact with compressor 8 Leak test output tubing connection of compressor 11 MN138 1 Rev H 02 14 4 4 4 3 2 Capacitor Replacement The capacitor starts the compressor If the compressor cannot start the capacitor may be defective and require replacement To replace the capacitor follow the steps below 1 2 3 6 Set the unit s 1 0 switch to the 0 position and unplug the power cord Remove front panel and locate capacitor Gently slide entire compressor enclosure towards you to allow easier access to the capacitor Do not pull out enclosure too far as damage may occur to certain components within concentrator Carefully disconnect both wire connections from the capacitor slide capacitor out from tie wrap To install new capacitor slide capacitor into the tie wrap holding it in place and connect both wire connections to capacitor Tie wrap should be centered on capacitor when properly installed Return compressor enclosure to its original position reinstall front cover Solenoid Valves
19. and reconnect fittings to the top of each sieve bed being careful not to over tighten 5 Install tubing to the top barb of transducer located on the circuit board Secure with tie wrap 17 MN138 1 Rev H 02 14 6 Leak test fitting connections of sieve beds 4 8 Product Regulator Check and Setting The product regulator enables you to set the maximum flow of oxygen output by the VisionAire unit To check for proper adjustment of the regulator take the following steps gar Set the 1 0 power switch to the I position Allow the unit to run for five minutes Turn the flow meter adjustment knob counterclockwise until tt stops wide open The flow meter ball should be set to liter above the maximum flow rate If not the product regulator needs to be reset 4 8 1 Setting Product Regulator for Normal Operation Use the following procedure to reset the product regulator 1 2 Oy d 20 Disconnect the humidifier bottle if used and the tubing from oxygen outlet Plug in the unit Set the unit s 1 0 power switch to the minutes to build up pressure Turn the flow meter adjustment knob counterclockwise until it stops wide open Remove the back panel of unit Pull outward on the regulator knob to unlock it Turn the regulator knob clockwise to increase until flow meter ball is set to 2 liter above the maximum flow rate Push in the regulator knob to lock it Reconnect the back panel
20. ce Required The product filter is located internally within the unit s product tank There is no requirement for replacement It is designed to last for the life of the concentrator Preparing for New Patient Use Method of Cleaning and Infection Control When you remove the VisionAire from a patient s home or facility always dispose of the used cannula and humidifier bottle Clean the exterior of the VisionAire with soapy water solution or mild household cleaner applied with a damp cloth or sponge to remove any gross debris Do not use liquid directly on unit and be careful not to get liquid into the interior of the unit Next following same guidelines above clean the exterior with either a common chemical disinfectant or bleach solution wear eye and skin protection After using the disinfecting solution wipe entire unit with a cloth or sponge applied with water only then wipe dry Make sure unit is completely dry and then retest it before you return it to inventory The manufacturers of sodium hypochlorite products recommend various strengths of a bleach solution for killing bacteria etc based on the type of germ to disinfect however a generally recommended solution is cups of household bleach gallon of water MN138 1 Rev H 02 14 4 0 Main Components 4 1 4 2 4 3 Components The design of the VisionAire Oxygen Concentrator allows for easy access and removal of most components This allows you to p
21. ction with screws using a Phillips head screwdriver Follow Power Cord Installation procedure outlined under section 4 13 2 Note location of strain relief on power cord is already determined 10 Using a Phillips head screwdriver reinstall compressor cover to compressor enclosure 4 19 Air Outlet Option if equipped The air outlet option enables the VisionAire unit to serve as a source of compressed air for patients who require a medication treatment The air outlet valve and adaptor located externally on the unit s center section allows for an easy connection of tubing to be used for this application Checking Setting the Air Outlet Pressure Regulator To check set the air outlet pressure regulator please follow the steps below 1 2 Set the unit s 1 0 switch to the position and set flowmeter ball to 51 Locate air outlet port on the center section of concentrator With pressure gauge attached to air outlet fitting p n 725 1 insert fitting into air outlet port Fitting will be locked in place when properly installed Verify pressure reading on gauge is 13 15psi 90 103 kPa Remove and reinstall outlet fitting into outlet port verify second pressure reading is the same If air outlet regulator requires adjustment turn clockwise to increase pressure If adjustment is needed verify two consecutive pressure readings are within specification Remove outlet fitting from outlet port 25 MN138 1 Rev H 02
22. d or exchange compressor Replace circuit board Replace mixing tank Replace valve manifold No flow indicated on flow meter and 6 beep no flow alarm does not activate Internal leak likely in location from unit regulator to flow meter Main circuit boards prior to Rev R do not have a no flow alarm Leak test and repair In particular regulator fittings following air path to flow meter Repair leaks 29 MN138 1 Rev H 02 14 Problem Probable Cause Solution Low oxygen concentration Ambient or unit s temperature is too high Leak Reduced air intake suction Restriction in exhaust muffler Contaminated sieve beds Weak compressor Faulty circuit board Faulty solenoid valve Unit operating above temperature range specifications Leak test and repair Blocked air intake or exhaust Defective cabinet fan Check compressor intake path for obstruction Clean remove obstruction Replace or clean exhaust muffler Replace sieve beds Check system pressure and rebuild or replace compressor Replace circuit board Replace valve manifold No flow indicated on flowmeter and 6 beep no flow alarm is activated Flowmeter is turned off Regulator is turned off Cannula tubing blocked or kinked External restriction at outlet of unit Internal restriction of airflow Turn flowmeter knob counterclockwise to allow flow of oxygen Unlock regula
23. d screwdriver remove screws securing circuit board to center section Remove circuit board Monitor Circuit Board Installation To install a new circuit board follow the removal procedure In reverse order 4 15 Mixing Tank Replacement VisionAire 2 uses an empty mixing tank assembly PN 004 1 NOTE Mixing Tank Removal and Installation To replace the mixing tank follow the steps below 1 Set the unit s I 0 switch to the 0 position and unplug the power cord 2 Remove both front and back panels 3 When viewing unit from the back locate mixing tank and cut tie wraps securing the mixing tank to the center section Do not remove tie wraps at this time 4 Disconnect tubing connections from the mixing tank before removing it 5 After review of correct installation is made remove the tie wraps which held the mixing tank in place Install new tie wraps to secure mixing tank to center section Do not tighten tie wraps at this time 6 Reconnect tubing to mixing tank secure tubing with tie wraps 7 Position mixing tank into place and tighten tie wraps to secure Before final installation care must be taken when installing new tie wraps and the mixing tank to avoid pinching any tubing or wires Inspection for this should be thoroughly made before final installation 4 16 Exhaust Muffler Replacement Exhaust Muffler Removal and Installation 23 MN138 1 Rev H 02 14 replac
24. e rim of ferrite ring Continue to wrap both power cord wires around and through the center of ferrite ring 6 times The last few times will require wires to be inserted individually one at a time into center of ferrite ring Insert power cord into holding clamps located to the right of the left sieve bed and route the power cord to the inside of the top left sieve bed tubing connection Reconnect the white wire from power cord to the hour meter and the black wire from power cord to the circuit breaker Reinstall right mounting plate assembly to center section using a Phillips head screwdriver When properly installed ferrite ring should be located in the recessed area behind the right mounting plate assembly 10 Reinstall both covers and turn unit on to confirm operation 22 MN138 1 Rev H 02 14 4 14 Oxygen Monitor Circuit Board Replacement In Equipped Units Oxygen Monitor Circuit Board Removal To remove the circuit board follow the steps below Care must be taken when removing and installing tubing to circuit board NOTE Sensor to prevent damaging sensor 1 2 Set the unit s 1 0 switch to the 0 position and unplug the power cord Remove both front and back panels 3 When viewing unit from the back locate oxygen monitor circuit board and remove the tie wraps at tubing connections 4 Carefully remove tubing from circuit board sensor Disconnect wire harness from circuit board 6 Using Phillips hea
25. e the exhaust muffler follow the steps below 1 Rp 10 11 12 13 14 15 Follow steps 1 7 in the Compressor Assembly Removal procedure outlined under section 4 3 1 Locate exhaust muffler assembly in back of compressor enclosure cut tie wrap securing it in place Remove tie wrap from tubing connection disconnect tubing Unscrew the top half exhaust muffler from exhaust muffler body Install new exhaust muffler to the muffler body being careful not to over tighten to prevent damaging threads of exhaust muffler Remove back panel To install tie wrap for new muffler assembly the compressor enclosure is required to be pulled out toward the front of unit To allow greater access remove tubing connections at the equalization valve and disconnect the fittings from both sieve beds Temporarily seal sieve bed openings with tape to prevent the sieve material from being exposed to the moisture in room air From the front of the unit gently slide entire compressor enclosure towards you Do not pull out enclosure too far as damage may occur to certain components within concentrator Starting from inside the compressor compartment install new tie wrap though the bottom opening located in the recessed area where the exhaust muffler assembly will be installed Hint it may be easier if the end of the tie wrap is formed into a hook shape before this step Route tie wrap up the back of the compressor compartm
26. ent Method of cleaning and infection control allowed Please refer to the General Instructions section in the VisionAire Service Manual Degree of safety of application in the presence of flammable anesthetic gases Equipment not suitable for such application Mode of operation Continuous duty MN138 1 Rev H 02 14 13 Functional Specifications Oxygen Concentration Accuracy Response Time Positioning Dimensions Weight Electrical 10 Alarms Electrical Shock Protection Operating Temperature Range Storage Temperature Range Humidity 1 5 liters per minute at 90 5 5 3 1 3 liters per minute at 90 5 5 3 VisionAire 3 8 2 liters per minute at 90 5 5 3 VisionAire 2 Based on 70 F 21 C at sea level 10 of indicated flow setting or 200 ml whichever is greater Allow 5 minutes to attain maximum oxygen concentration Operate the unit in an upright position maintaining at least 12 inches 30 5cm of open space on all sides for ventilation 20 8 in high 14 1 in wide 11 5 in deep 52 8 cm high 35 8 cm wide 29 2 cm deep 30 Ib shipping weight 37 Ib 13 6 kg shipping weight 16 7 kg 115 60 Hz 3 amps 290 watts 115 60 Hz 3 amps 190 watts VisionAire 3 115 60 Hz 3 amps 200 watts VisionAire 2 220 240 VAC 50 Hz 1 5 amps 290 watts 220 60 Hz 1 5 amps 290 watts 230 VAC 50 Hz 1 5 amps 180 watts 230
27. ent and into the top opening of the compressor enclosure When finished both ends of tie wrap should be located inside the compressor enclosure Reattach tubing to exhaust muffler assembly securing with tie wrap Place muffler assembly into recessed area securing with installed tie wrap Return compressor compartment to the original position being careful not to pinch any tubing or wires between compressor enclosure and center section of unit Reinstall compressor assembly following the Compressor Assembly Installation procedure outlined under section 4 3 1 Reconnect and tighten fittings to top of sieve beds Bottom sieve bed tubing and the unit s power cord should be located inside these tubing connections 16 Reconnect and secure tubing to equalization valve using tie wraps 17 Leak test tubing connections on sieve beds and equalization valve 4 17 Caster Replacement Caster Removal To replace a caster it is necessary to remove the base of unit from the center section To do this follow the steps below 1 2 3 Set unit s 1 0 switch to 0 position and unplug the power cord Remove both front and back panels Remove compressor cover from the compressor enclosure to access front screws securing center section to base Using a Phillips head screwdriver remove the screws in the front and back of unit securing the base of unit to the center section 24 MN138 1 Rev H 02 14 5 Gently po
28. erform repair and replacement of parts with minimal time and effort To prevent accidental electric shock burn be sure to set the 510 CAUTION Power switch to the 0 position and unplug the power cord of the unit from the electrical outlet before you service the VisionAire Oxygen Concentrator Some internal components including the compressor may require cooling down before component removal Care should be taken when removing all components CAUTION Before reattaching tubing connections using a tie wrap remove 1 8 inch 0 32 cm from end of tubing to assure a proper seal Tubing should be cut evenly across width Cabinet Removal 4 2 1 Removing Front Panel To remove the unit s front panel locate and unscrew both 4 turn fasteners located at the top of the unit 4 2 2 Removing Back Panel To remove the unit s back panel locate and unscrew both turn fasteners located behind the humidifier bottle retaining strap within the humidifier bottle recess area of back panel Compressor The compressor is the pump within the oxygen concentrator that pushes the room air into the top of the sieve beds This allows oxygen to flow out of the bottom of the sieve beds in the VisionAire unit Two different aspects of the compressor cause concern the output and the sound level Output Compressor output refers to how much compressed air the compressor can produce This depends upon the model of the compressor st
29. eriodic servicing by an approved technician do not comply with the manufacturer s specifications the latter is absolved from all responsibility in the event of an accident Do not open the device while in operation risk of electrical shock This device complies with the requirements of the 93 42 EEC European directive but its operation may be affected by other devices being used close by such as diathermy and high frequency electro surgical equipment defibrillators short wave therapy equipment mobile telephones CB and other portable devices microwave ovens induction plates or even remote control toys and more generally electromagnetic interferences which exceed the levels specified by the EN 60601 1 2 standard MN138 1 Rev H 02 14 Classification Type of protection against electric shock Class Protection from electric shock is achieved by DOUBLE INSULATION Protective earthing or reliance upon installation conditions is not required Degree of protection against electric shock Type B Equipment providing a particular degree of protection against electric shock particularly regarding 1 allowable leakage current 2 Reliability of protective earth connection if present Not intended for direct cardiac application Degree of protection against harmful ingress of water Equipment provided with an enclosure preventing entry of such an amount of falling liquid as might interfere with the satisfactory and safe operation of the equipm
30. et switch once to display TMR1 mode To reset the timer display confirm that 1 is displayed in the upper left corner Press and hold the pinhole reset switch for 3 seconds until 0 0 is displayed Hour Meter Removal To remove the hour meter follow the steps below 1 Set the unit s 1 0 switch to the 0 position and unplug the power cord 2 Remove front panel and locate hour meter 3 To gain access to the underside of the hour meter remove screw securing the right mounting plate assembly to the center section using a Phillips head screwdriver 4 Lift assembly out from unit and disconnect wires from hour meter 5 While pressing in the securing tabs located in each corner of hour meter push hour meter through the front of the mounting plate It may be easier to perform this step to one side of the hour meter at a time Hour Meter Installation To install a new hour meter follow the steps below 1 Follow the removal procedure for the hour meter in reverse order 2 Be sure to reinstall the new hour meter properly by having the hourglass icon located on the bottom when finished 3 The top two hour meter wire connections should be from the white wire from power cord and the white wire from the circuit board harness 4 The lower two hour meter wire connections should be from the black wire from the 1 0 power switch and the black wire from the circuit board harness 5 Connections for the sa
31. et the unit s 1 0 switch to the 0 position and unplug the power cord Remove the front panel and locate the 1 0 power switch To gain access to the underside of the switch remove screw securing the right mounting plate assembly to the center section using a Phillips head screwdriver Lift assembly out from unit and disconnect wires from switch To allow easier access to the 1 0 power switch remove the circuit breaker from mounting plate leaving wires connected Refer to circuit breaker removal procedure 4 9 1 With circuit breaker removed use large adjustable pliers to unlock the top and bottom securing tabs of power switch while pushing power switch through front of mounting plate at the same time 10 Power Switch Installation Follow the removal procedure for the 1 0 power switch in reverse order to install a new power switch 1 2 Be sure to reinstall the new switch properly by having the 0 on the switch located on the bottom when finished Wire connections on the left side of switch should be from circuit breaker and hourmeter wires Wire connections on the right side of switch from the circuit board wires The smaller size wires are from the circuit board Same side wire connections of power switch can be made to either terminal 20 MN138 1 Rev H 02 14 4 11 Hour Meter Replacement FOR P N HM009 2 ONLY HM009 2 isa dual timer hour meter To toggle between the two display screens press the pinhole res
32. g from circuit board sensor Care must be taken when removing and installing tubing to circuit board sensor to prevent damaging sensor NOTE 5 Gently slide entire compressor enclosure towards you to allow access to wire connections located at the back of the circuit board Do not pull out enclosure too far as damage may occur to certain components within concentrator 6 Locate and remove the 2 pin wire harness labeled Compressor on circuit board 7 Inaclockwise manner remove remaining wire harnesses from circuit board These are wire harnesses labeled AC Power Buzzer PowerSw Temp Switch Fan and the 6 pin wire harness located at the back of the circuit board labeled Valves If unit is equipped with an O2 monitor system there will be two additional wire harness connections labeled O2 LED and Sensor that should be disconnected from the circuit board before removal 8 Using a Phillips head screwdriver remove screws securing circuit board in place Circuit Board Installation To install the circuit board follow the steps below 1 Located at the back of the circuit board reconnect wire harness to connection labeled Valves on circuit board 2 Care should be taken when reconnecting any wire harness to assure they are installed properly 3 Perform the remaining steps listed in the circuit board removal procedure in reverse order 4 Replace compressor enclosure to its original position
33. he sieve bed tubing do not over tighten 3 Remove original sealant tape from threads on fittings which will be installed to underside of manifold Apply new sealant tape to fittings before installation a Fitting with braided tubing attached compressor must be installed to the left underside of manifold Fitting with tubing attached exhaust muffler must be installed to the right underside of manifold b Foam pieces should be in place over fittings before installing manifold to compressor enclosure 4 Valve manifold must be positioned properly before installation When positioned correctly the front of the valve manifold will face towards the back of the compressor enclosure and will rest on the support pins on top of the enclosure 5 When installing coils onto manifold valve stems view manifold from the front a The front valve stem is the equalization valve and its coil should be installed having the wire terminals positioned on the bottom of the valve stem The other coils must be installed having their wire terminals located on top of their valve stems b The outside feed valve coils must be installed so their wire terminals are pointing towards the front of manifold c The inside exhaust valve coils must be installed so their wire terminals are pointing towards the back of manifold d Valve coil retainer clips must be installed correctly so that the open ends are pointing downward on top of valve coil 6 Periodic adjus
34. ion test as described in Section 2 4 23 Alarm System The VisionAire Oxygen Concentrator is equipped with an alarm system which sounds an intermittent alarm when a power failure or other alarm condition occurs The intermittent alarm sounds are displayed in the following table 6 MN138 1 Rev H 02 14 2 4 VisionAire Intermittent Alarm Indicators Condition No Low O2 Low High High No Power Pressure Pressure Temperature Flow Audible One beep Two Three Four Five Six Alarm beeps beeps beeps beeps beeps If the high pressure alarm is activated the compressor and valves will shut down and the audible four beep alarm will continue This alarm remains on until you set the 1 0 power switch to the 0 position Refer to Section 5 0 for alarm identifications and a list of probable alarm causes 2 3 1 Start Up Each time the VisionAire unit is turned on an alarm should sound for approximately four seconds 2 3 2 Power Failure Alarm Test To test the power failure alarm disconnect the unit from power set the 1 0 power switch to the I position This should activate the audible one beep alarm If the unit has not been used for an extended period of time it needs to operate for several minutes to recharge the power failure alarm NOTE 2 3 3 No Flow Alarm Test To test the no flow alarm place thumb over oxygen outlet to completely block flow for approximately 10 15 seconds The
35. ire Oxygen Concentrator thoroughly after manufacture You must perform the following test to ensure that no damage occurred in shipping or handling Do not use extension cords with this unit or connect too many plugs into the same electrical outlet The use of extension cords could adversely affect the performance of the device Too many plugs into one outlet can result in WARNING Overload to the electrical panel causing the breaker fuse to activate fire if the breaker or fuse fails to operate 1 Open and inspect all cartons that contain units upon delivery Unpack the unit and remove it from the carton Inspect the unit itself for damage If the exterior of a 8 carton is damaged or the unit itself is damaged note it on the freight bill signed by the driver 2 Plug in the power cord of the unit and set the 1 0 power switch to the position Check to see that the following occurs a continuous alarm sounds for approximately four seconds See the troubleshooting chart in Section 5 0 of this manual if the unit s alarm does anything other than sound for four seconds The compressor runs and flow is indicated in flow meter c OPTIONAL The Oxygen Monitor s amber light will remain on for four minutes upon startup regardless of unit s concentration After four minutes the light will go out if the concentration level has reached minimum concentration requirements d Perform an oxygen concentrat
36. isie Aire Oxvgen Concentrator Service Manual For VisionAire VisionAire 2 8 VisionAire 3 Models AirSep Corporation 401 Creekside Drive Buffalo NY 14228 2085 USA Telephone 716 691 0202 24 Hour Fax 716 691 4141 www airsep com MN138 1 Rev H 02 14 Expedited Product Warranty Check service is always at your fingertips with AirSep http www airsep com medical equipmentproviders html OR In the US or Canada dial 866 873 9277 AirSep is a registered trademark of AirSep Corporation VisionAire is a trademark of AirSep Corporation 138 1 Rev H 02 14 Table of Contents Section 1 0 Introduction 1 1 Equipment Provider Responsibility 1 1 2 Important Notice and Symbol Explanations 2 13 Functional Specifications 5 Section 2 0 Operation Check and Oxygen Concentration Test 2 1 Description of Operation 6 22 Operation Check 6 23 Alarm System 6 2 3 1 Start Up 7 2 3 2 Power Failure Alarm Test 7 2 3 3 No Flow Alarm Test 7 24 Oxygen Concentration Test and Specification 7 Section 3 0 General Instructions 3 1 Instructions 8 32 Patient Provider and Routine Maintenance 9 3 2 1 Product Filter No Maintenance Required 9 3 2 2 Preparing for New Patient Use Method 9 of Cleaning and Infection Control Section 4 0 Main Components 4 1 Components 10 4 2 Cabinet Removal 10 4 2 1 Removing Front Panel 10 4 2 2 Removing Back Panel 10 4 3 Compressor 10 4 3 1 C
37. l components coil etc 31 MN138 1 Rev H 02 14 Appendix Exploded Drawings Wiring Diagram VisionAire Wiring Diagram VisionAire 2 VisionAire 3 Valve Wire Harness WH105 1 Main Assembly Center Section Assembly Compressor Enclosure Assembly Compressor Assembly Valve Manifold Assembly m m Q b p MN138 1 Rev H 02 14 WHITE CONNECT TO BLACK CIRCUIT HOUR POWER SWITCH Seer D BROWN a COMPRESSOR BLUE 0 22 1 CAPACITOR 250 80Hz UNITS ONL BLACK g 1159 BLACK 1159 RED ew RED OB so 2000 115 2 a OR 10 0uF 230 SOHZ 7 508 230 2 13 COMPRESSOR JA AC POWER CIRCUIT an hr hr BOARD J7 BUZZER d BUZZER iam jn ee Sw TI l zanj vil mm mo 41 Volves HI LD J5 PROGRAM op BLACK i HUD ba wr HEL 110 02 SENSOR RED m H OPTIONAL 02 MONITOR lt l m 2 Ese Eze fale mos LT LI TT FAN THERMISTOR PROBE WIRING DIAGRAM VISIONAIRE 115V AND 230V MN138 1 Rev H 02 14 CONNECT TO WHITE POWER OUTLET SUK K gt POWER 0 224 230V 50Hz 0 224 1154 8CHr RED 230 RED 2309 BLACK 1154 BLACK 1159 amp m CAP 730v SQHZ 204 115v 6OHZ J3 COMPRESSOR 44 POWER CIRCUMT JATA ATTA 0
38. me color wires can be made to either terminal 4 12 Flow meter Replacement Care must be taken when removing and installing the flowmeter on units equipped with an O2 monitoring systems to prevent damaging circuit board sensor The tubing assembly from the top of the flow meter is connected to sensor Flowmeter Removal To remove the flow meter follow the steps below 1 Set the unit s 1 0 switch to the 0 position and unplug the power cord 2 Remove the front panel and locate flow meter 3 To gain access to the underside of the flow meter remove screw securing the left mounting plate assembly to the center section using a Phillips head screwdriver 4 Carefully lift assembly out from unit 5 Cut only the top tie wraps on each tubing connection of flow meter and disconnect tubing from flow meter 6 Remove flow meter nuts securing flow meter to the mounting plate remove flow meter 21 MN138 1 Rev H 02 14 Flowmeter Installation 1 To install a new flow meter follow the flow meter removal procedure in reverse order Leak test the tubing connections 2 Assure flow meter reads 1 2 liter above the maximum flow rate when fully opened Refer to section 4 8 Product Regulator Check and Setting for proper adjustment as needed 3 To avoid the possibility of activating no flow alarm set flow meter to desired liter flow prior to turning unit off 4 13 Power Cord Replacement Power Cord Removal To remove the power cord
39. move cover to access compressor assembly 4 Locate the 2 pin wire connection labeled compressor on circuit board and carefully disconnect connector from the circuit board 5 Disconnect both wire connections from capacitor 6 Remove the compressor by gently lifting it up and pulling it towards you at the same time 7 Disconnect output tubing from left side of compressor assembly Compressor Assembly Installation To install compressor assembly follow the steps below 1 Locate new compressor assembly 2 Attach output tubing to compressor Turn tubing 1 4 turn in counter clockwise direction and hold in that position while tightening fitting If this is not done the compressor will lean forward and contact the enclosure cover 3 Assure compressor assembly is installed correctly All four compressor springs must be installed on to their corresponding spring guides located on the bottom of the compressor compartment 4 The end of the temperature probe must be located within the compressor compartment and positioned behind the compressor wires before installing the compressor cover 5 Care should be taken when reconnecting wire connections to the circuit board and capacitor Both sets of wires from compressor must be routed properly through the loop on tie wrap mount located inside of the compressor compartment up through the small recessed area of compressor compartment in front of temperature probe and alongside the back of cap
40. n ohmmeter can be helpful to easily determine faulty coil Replace sieve beds Replace circuit board Replace relief valve Unit alarms with 1 0 power switch in I position Circuit breaker repeatedly trips Faulty electrical connection Faulty capacitor Faulty circuit breaker Faulty compressor Faulty circuit board Repair electrical connection Replace capacitor Replace circuit breaker Replace compressor Replace circuit board Cabinet fan does not turn Faulty electrical connections Faulty cabinet fan Check electrical connections Replace cabinet fan Flowmeter fluctuates Improperly set or faulty product regulator Leak Reduced air intake suction Faulty flowmeter Worn compressor Faulty circuit board Faulty solenoid valve Check regulator setting Repair or replace regulator Leak test and repair leak Check compressor intake path for obstruction Remove obstruction Replace flowmeter Replace compressor Replace circuit board Replace solenoid valve manifold Limited or low flow Restriction in humidifier tubing Product regulator set too low Leak Reduced air intake suction Weak compressor Faulty circuit board Restriction in mixing tank Faulty solenoid valve Replace humidifier or tubing Adjust regulator setting Leak test and repair Check compressor intake path for obstruction and remove if needed Check system pressure and rebuil
41. nter of the regulator body to gain access to the seat 6 Remove the seat Be careful not to lose the spring located behind the seat 7 Clean or replace the seat 19 MN138 1 Rev H 02 14 8 9 With the spring behind the seat screw the diaphragm stem guide back into the body of the regulator Do not over tighten Install a clean or replacement diaphragm 10 Put the large spring and slip ring into the bonnet and screw the bonnet onto the regulator body 11 Reset the product regulator as described in Section 4 8 1 4 9 Circuit Breaker Replacement Circuit Breaker Removal To remove the circuit breaker follow the steps below l 2 3 4 5 Set the unit s 1 0 switch to the 0 position and unplug the power cord Remove the front panel and locate circuit breaker To gain access to the underside of the circuit breaker remove screw securing the right mounting plate assembly to the center section using a Phillips head screwdriver Lift assembly out from unit and disconnect wires from circuit breaker Remove the securing ring holding the circuit breaker to the mounting plate Circuit Breaker Installation Follow the removal procedure for the circuit breaker in reverse order to install the new circuit breaker Wire connections on circuit breaker can be made to either terminal 4 10 1 0 Power Switch Replacement 10 Power Switch Removal To remove the 1 0 power switch follow the steps below 2 2 S
42. ome contaminated gradually Careful leak testing is important as the sieve material can become contaminated gradually with very small leaks If replacement is necessary you must replace both sieve beds at the same time Sieve Bed Removal To remove sieve beds follow the steps below 1 Set the unit s 1 0 switch to the 0 position and unplug the power cord 2 Remove back panel 3 Remove the fitting on the top of each sieve bed 4 While keeping the four large sieve bed tie wraps in place gently pull upwards on the top tie wrap and remove each bed 5 Lift each sieve bed from bottom tie wrap and disconnect product tubing located at bottom of each bed connection Sieve Bed Installation To install the sieve beds follow the sieve bed removal procedure in reverse order All tubing connections must be tightened properly to eliminate leaks Do not over tighten fittings To check for leaks take the following steps 1 Plug unit in and set the unit s 1 0 switch to the I position 2 Allow unit to run for three minutes 3 Apply soapy water solution around tubing connections on both sieve beds and check for leaks Cabinet Fan The cabinet fan pulls ambient air into the VisionAire unit As this air is drawn in the air cools internal components including the compressor and exits out the bottom of the unit 4 6 1 Cabinet Fan Replacement Periodic adjustment of compressor enclosure may be necessary during thi
43. ompressor Replacement 11 MN138 1 Rev H 02 14 4 4 4 5 4 6 4 7 4 8 4 9 4 10 4 11 4 12 4 13 4 14 4 15 4 16 4 17 4 18 4 19 4 3 2 Capacitor Replacement Solenoid Valves 44 1 Valve Manifold Replacement 4 4 2 Solenoid Valve Coil Replacement Sieve Beds 4 5 1 Sieve Bed Replacement Cabinet Fan 4 6 1 Cabinet Fan Replacement Circuit Board 4 7 1 Circuit Board Replacement Product Regulator Check and Setting 4 8 1 Setting Product regulator for Normal Operation 4 8 2 Product Regulator Lockout 4 8 3 Back Pressure Correction 4 8 4 Product Regulator Cleaning or Rebuilding Circuit Breaker Replacement 1 0 Power Switch Replacement Hour Meter Replacement Flow Meter Replacement Power Cord Replacement Oxygen Monitor Circuit Board Replacement Mixing Tank Replacement Exhaust Muffler Replacement Caster Replacement Roller Base Replacement Air Outlet Option if equipped 12 12 12 14 14 14 15 15 16 17 18 18 18 19 20 20 21 21 22 23 23 23 24 25 25 iv MN138 1 Rev H 02 14 Section 5 0 Troubleshooting 5 1 5 2 5 3 5 4 Operation Pressure Test 5 1 1 High Operating Pressure 5 1 2 Low Operating Pressure General Troubleshooting Troubleshooting Chart Tool Kit and Pressure Test Gauge 26 26 26 27 28 31 138 1 Rev H 02 14 Appendix Exploded Drawings Wiring Diagram VisionAire Wiring Diagram VisionAire 2 VisionAire 3 Valve
44. or If the unit does not turn on refer to the troubleshooting chart Turn the flow meter knob until it is wide open at the highest setting The ball should be located liter above the maximum flow rate If the flow meter is not located at this setting adjust the regulator until the ball is set 1 4 liter above the maximum flow rate with the flow meter completely open Make sure the unit is cycling properly by a observing the flow meter ball is stable flow meter ball does not move up and down more than liter b checking circuit board if high or low pressure lights are illuminated and audible pressure alarm is sounding Place your thumb over outlet of unit The flowmeter ball should drop to the bottom of the flowmeter If the ball does not drop completely to the bottom there is a leak present between the top of the flowmeter and the outlet of the unit If concentrator is not meeting specifications make sure that the unit is leak free by testing all tubing connections and fittings with leak testing solution Protect circuit board s from solution and start leak test at the compressor following air flow of unit to oxygen outlet Repair all leaks by tightening connections and fittings If unit is alarming refer to the Alarm Indicator Chart in Section 2 3 for probable solutions Set the concentrator at the maximum flow rate and connect an operating pressure test gauge to unit Determine pressure parameters by observing high and low press
45. p and bottom gently remove the compressor enclosure from the center section of unit by sliding it out through the front With the compressor enclosure completely removed carefully remove all valve retainer clips and coils from each valve stem Wire connectors can remain 12 MN138 1 Rev H 02 14 attached to coils for easier installation Please refer to the Valve Wire Harness drawings WH105 1 located on page C in the Appendix section of this manual as needed Care must be taken when removing and installing valve coil retainer clips CAUTION 10 Using 1 8 inch Allen wrench remove mounting bolt securing the manifold to the center section Remove manifold assembly from compressor enclosure 11 With the tubing still attached from the exhaust muffler and compressor remove the fittings and tubing located on the underside of the valve manifold using a 7 16 inch open end wrench 12 Disconnect fittings and remove the sieve bed feed tubing from manifold using a 9 16 inch open end wrench 13 Disconnect small tubing from both sides of the valve manifold Valve Manifold Installation To replace the valve manifold follow the steps below To follow this procedure easier view the manifold from the front when reassembling components to manifold Equalization valve will be positioned in the front of manifold when viewed this way 1 Perform the valve manifold removal procedure in reverse order 2 When installing the fittings from t
46. phasize or repeat Symbols Abbreviations Symbols are frequently used on equipment in preference to words with the Intention of lessening any possibility of misunderstanding caused by language differences Symbols can also permit easier comprehension of a concept within a restricted space The following table is a list of symbols and definitions that may be used with AirSep s VisionAire Oxygen Concentrators These symbols are referenced from the appropriate International Electro technical Commission IEC standards Symbol Description Symbol Description ON power switch on OFF power switch off No smoking Do not disassemble Type B equipment Consult instructions for use A Warning Describes a hazard or unsafe practice that if not avoided can result in severe bodily injury death or property damage d He Class II Device Caution Describes a hazard or unsafe practice that if not avoided can result in minor bodilv injurv or propertv damage wo Complies with the 93 42 EEC directive drawn up by the approved organization No 0459 gt 2 m Note Provides information important enough to emphasize or repeat D Certified Electrical Safoty CERTIFIED TO CSA SID 22 2 No 601 1 Safety agency for CAN CSA C22 2 No 601 1 M90 for medical electrical equipment MN138 1 Rev H 02 14 Symbol Descrip
47. physician if they experience any signs of discomfort Be available to provide service to each patient at any time Establish and implement a protocol to check oxygen concentration This unit is not a life support device Geriatric pediatric or any other patient unable to communicate discomfort while using this oxygen concentrator may require additional monitoring Patients with hearing and or sight impairments may need assistance with monitoring the alarms This device supplies high concentration oxygen that promotes rapid burning Do not allow smoking or open flames within the same room of 1 this device or 2 any oxygen carrying accessory Failure to observe this warning can result in severe fire property damage and or cause physical injury or death Use no oil grease or petroleum based or other flammable products on or near nasal end of cannula or on the VisionAire unit Oxygen accelerates the combustion of flammable substances WARNING MN138 1 Rev H 02 14 1 22 Important Notice and Symbol Explanations As you read the manual pay special attention to the WARNING CAUTION and NOTE messages They identify safety guidelines or other important Information as follows WARNING CAUTION Describes a hazard or unsafe practice that can result in severe bodily injury or death Describes a hazard or unsafe practice that can result in minor bodily injury or property damage Provides information important enough to em
48. roke length bore size and cup seal condition The cup seals form the seal between the piston and the cylinder wall As the cup seals wear the compressor s output begins to gradually decrease This reduction in compressor output results in less air for the sieve beds Therefore the production of oxygen decreases Since this drop in oxygen production occurs over a long period of time preventative maintenance on the compressor is not required You can continue a patient s therapy on the VisionAire unit as long as that unit s oxygen concentration level at the prescribed flow rate is within AirSep s specifications 10 MN138 1 Rev H 02 14 Sound Level The condition of the compressor s cup seals bearings and other components can result in an increased sound level If the compressor s cup seals or bearings wear to the point that they become noisy the concentrator may become noticeably louder therefore compressor service or exchange may be required 4 3 1 Compressor Replacement Some internal components including the compressor may require cooling down before component removal Care should be taken when CAUTION removing all components Compressor Assembly Removal To remove the compressor assembly follow the steps below 1 Set the unit s 1 0 switch to the 0 position and unplug the power cord 2 Remove the front panel of unit 3 Remove screws securing the compressor cover to the compressor enclosure and re
49. s process NOTE 5 j Cabinet Fan Removal To replace the cabinet fan follow the steps below 1 Set the unit s 1 0 switch to the 0 position and unplug the power cord 2 Remove both front and back panels 3 From back of unit disconnect tubing connections at the equalization valve and disconnect fittings from top of both sieve beds Temporarily seal sieve bed openings with tape to prevent the sieve material from being exposed to the moisture in room air 4 From the front of the unit disconnect small tubing from the in line adaptor leading to the sensor located on the circuit board 15 MN138 1 Rev H 02 14 5 Disconnect the wire connectors labeled AC Power and PowerSw from circuit board If equipped with an O2 oxygen monitor also disconnect wire connectors labeled O2 LED and Sensor 6 With adjusting compressor enclosure alternating pulling out top and bottom gently remove the compressor enclosure from the center section of unit by sliding it out through the front 7 Locate cooling fan at the back of the compressor enclosure Review of both the cooling fan and its wire connection positions should be made prior to fan removal to allow easier and proper installation of new fan 8 Remove fan and foam strip from the fan recess area and disconnect wires at proper locations Cabinet Fan Installation To install the cabinet fan follow the steps below It is very important to install the cabinet fan correctly
50. sition the entire concentrator on its back and separate the base from the center section Power cord is still attached to base 6 From the underside of base secure caster nut located just above the wheel of caster using a 1 2 inch combination wrench 7 While securing the nut remove the top nut of caster using a 9 16 inch combination wrench Caster Installation To install a caster follow the removal steps in reverse order 1 Larger washer should be installed onto caster before inserting into underside of base 4 18 Roller Base Replacement T ae 9 Roller base removal and Installation To replace the base on the VisionAire concentrator please follow the steps below Set the unit s 1 0 switch to the 0 position and unplug the power cord Remove both front and back panels Follow Power Cord Removal procedure outlined under section 4 13 1 Remove compressor cover from the compressor enclosure to access front screws securing center section to base Using a Phillips head screwdriver remove the screws in the front and back of unit securing the base of unit to the center section Gently position the entire concentrator on its back and separate the base from the center section Follow Caster Replacement procedure outlined under section 4 17 to remove casters and install onto new base Install center section onto new base making sure the power cord location on the base is located at the back of the unit Secure base to center se
51. the same room of 1 this device or 2 any oxygen carrying accessory Failure to observe this warning can result in severe fire property damage and or cause physical injury or death Electrical shock hazard Disconnect the power cord from the electric outlet before you clean the unit to prevent accidental electrical shock and burn hazard Only your Equipment Provider or a qualified service technician should remove the covers or service the unit Care should be taken to prevent the VisionAire from getting wet or allowing any liquid to enter the unit This can cause the unit to malfunction or shut down and cause an increased risk for electrical shock or burns MN138 1 Rev H 02 14 WARNING 3 2 Do not use liquid directly on the unit Clean the exterior of unit and power cord only with a mild household cleaner applied with a damp cloth or sponge and then wipe all surfaces dry Patient Provider and Routine Maintenance AirSep does not require any preventative or routine maintenance on the VisionAire concentrator VisionAire s unique design and technology allows for a virtually maintenance free oxygen concentrator You do not need to perform any maintenance as long as the VisionAire unit remains within specifications at the desired flow rate V NOTE 3 2 1 3 2 2 The VisionAire does not incorporate an external air intake gross particle filter or batteries that require replacement Product Filter No Maintenan
52. tion Symbol Description NY ve 26 A Consult the accompanying documents Keep unit and accessories dry Proper disposal of waste of electrical and electronic equipment required 120 Use grease Do to open flames 2 Oxvgen outlet connection to the 2 cannula Caution Federal law USA restricts this for sale or rental bv or on the order of a physician or ONLY licensed health care provider Keep in the vertical position Oxygen concentration warning LED hd Fragile handle with care See Instructions SEa Method disposing of waste All waste from the VisionAire patient circuit etc must be disposed of using appropriate methods Method for disposing of the device In order to preserve the environment the concentrator must only be disposed of using the appropriate methods Conformity with EN 60 601 6 8 2 b The manufacturer assembler installer or importer is not considered to be responsible themselves for the consequences on the safety reliability and characteristics of a device unless The assembly fitting extensions adjustments modifications or repairs have been performed by persons authorized by the party in question The electrical installation of the corresponding premises complies with IEC regulations The device is used in accordance with the instructions for use If the replacement parts used for the p
53. tment of the compressor enclosure may be required when reinstalling into center section 13 MN138 1 Rev H 02 14 a Care must be taken not to pinch any wires tubing between the compressor enclosure and center section before final Installation b The wire harness for both the left feed valve and the equalization valve along with the wire harness for the right feed valve must be routed outside of the valve manifold assembly before connecting to valve coils The AC 1 0 power switch wire harness and the pressure tubing to the circuit board sensor must be routed to the outside of the manifold assembly and along the back of the capacitor before installation 7 When reinstalling fittings to top of the sieve beds ensure wires and tubing on both sides are located inside of these connections 8 If equipped with an O2 oxygen monitor be sure to reconnect wire connections labeled O2 LED and Sensor to circuit board When reattaching tubing to exhaust muffler be sure to secure with tie wrap 10 Install the compressor assembly by following the compressor assembly installation procedure outlined under section 4 3 1 4 4 2 Solenoid Valve Coil Replacement An ohmmeter can be a useful tool in determining the condition of a valve coil When using an ohmmeter each valve coil should be between 713 837ohms To replace a solenoid valve coil follow the steps below 1 Set the unit s 1 0 switch to the 0 position and unplug the power
54. tor knob and turn clockwise to allow flow of oxygen Refer to section 4 8 Product Regulator Check and Setting for proper adjustment Check cannula tubing Replace if necessary Reduce remove attachments from outlet of unit humidifier bottle tubing etc Check internal tubing for blockage or kinks Alarm does not sound Unit has been turned off for an extended period of time Faulty electrical connection Faulty buzzer Faulty 1 0 power switch Faulty circuit board Turn on unit and let run for several minutes to charge alarm capacitor With unit running disconnect from power source and verify power failure alarm l beep Repair electrical connection Replace buzzer Replace 1 0 power switch Replace circuit board 30 MN138 1 Rev H 02 14 5 4 Tool Kit and Pressure Test Gauge The tools needed for you to properly service the VisionAire unit are listed below Multi adjustable pliers small wire cutters small needle nose pliers slotted head screwdriver Phillips head screwdriver adjustable wrench 1 2 inch combination wrench 7 16 inch combination wrench 9 16 inch combination wrench and 1 8 inch Allen wrench Pressure test adapter AirSep p n 1257 2 A pressure test gauge AirSep p n 1036 1 to read operating system pressures on the VisionAire unit should be kept available at all times An ohmmeter multi meter is a useful diagnostic tool when troubleshooting electrica
55. ure points on the gauge If pressures are high or low refer to Section 5 1 Review troubleshooting chart to isolate and repair any other malfunctions 27 MN138 1 Rev H 02 14 5 3 Troubleshooting Chart Problem Probable Cause Solution Unit does not run 1 0 power switch in I position No power to unit Unit circuit breaker tripped faulty Faulty electrical connections Faulty circuit board Faulty 1 0 power switch Check wall outlet for power Reset or replace circuit breaker Check electrical connections Replace circuit board Replace I 0 power switch Compressor runs with intermittent alarm Oxygen concentration at max flow rate is within specifications Faulty pressure transducer Replace circuit board Compressor runs and shuts down periodically Only start up alarm activates Faulty oxygen monitor circuit board Replace oxygen monitor circuit board Compressor runs and shuts down periodically with 5 beep intermittent high temperature alarm Restricted air flow Unit overheating due to improper location Compressor thermally cut off due to excessive heat NOTE It will not restart until it cools down Faulty cabinet fan Temperature probe wire harness faulty or disconnected from circuit board Remove obstruction Locate unit away from heating source providing adequate ventilation on all sides Do not operate more than one unit side by side Replace cabinet fan
56. wer and PowerSw If equipped with an O2 oxygen monitor also reconnect wire connections labeled O2 LED and Sensor 9 Reattach small tubing to the in line adaptor leading to the sensor located on the circuit board secure with tie wrap 10 Leak test tubing connections and assure fan is rotating properly 47 Circuit Board The solid state printed circuit board controls the timing operation of the five solenoid valves the alarm system functions and regulates the voltage to ensure efficient and optimal performance 16 MN138 1 Rev H 02 14 The Printed Circuit Boards PCBs contain components that are sensitive to electrostatic discharge ESD and can damage the board if not handled properly As when handling any ESD sensitive PCB observe standard ESD safety procedures 4 7 1 Circuit Board Replacement Circuit Board Removal To remove the circuit board follow the steps below 1 Set the unit s 1 0 switch to the 0 position and unplug the power cord 2 Remove both front and back panels 3 In viewing unit from the back remove fittings from top of both sieve beds This step will allow easier access to circuit board when the compressor enclosure is moved Temporarily seal sieve bed openings with tape to prevent the sieve material from being exposed to the moisture in room air 4 In viewing unit from the front locate circuit board and cut tie wrap securing tubing to the transducer on circuit board Carefully remove tubin

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