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VIASYS Vela Ventilator Service Manual

1. 30 L1534 Vela Ventilators CAUTION Ensure that J5 is pinned properly since an incorrect connection could damage the power PCB 6 7 8 9 Slide the right panel into the front panel ensuring that it rests on the bottom rail Install the 1 Phillips pan head screw in the lower center of the panel Install the 1 Phillips countersink screw in the upper front of the panel Install the 2 Phillips countersink screws in the side of the rear panel 10 Install the battery tray top cover and power cable Note The Vela right panel assembly with the power board attached is supplied as a single complete assembly part number 15894 Do not attempt to disassemble or to replace individual components Revision B December 2004 31 Disassembly amp Reassembly Procedures Service Manual ASSY Add YIMOdA v6sal Figure 3 7 Right Panel and Power PCB December 2004 Revision B L1534 32 Vela Ventilators Front Panel Part number 15869 L1534 Removal 1 Remove the power cable top cover battery tray right panel and left panel 2 Disconnect the following from the main PCB JP2 40 pin ribbon cable to JP1 on the SVGA out PCB J301 12 pin to J301 on the blender PCB P N 15497 Note Disconnect the video cable from JP2 on the main PCB rather than from JP1 on the SVGA out PCB Disconnect the green oxygen nebulizer tube Remove the 2 Phillips pan head screws behind
2. Preset An operator set ventilator parameter Trigger Value at which the ventilator initiates delivery of a breath as a result of measured patient effort BTPS Body Temperature at Ambient Pressure Saturated ATPD Ambient Temperature Ambient Pressure Dry Demand Flow The flow generated by the ventilator to meet the patient s flow demand in order to maintain PEEP at the preset level PEEP Positive End Expiratory Pressure AC Alternating Current mains electricity Bias Flow A continuous flow through the patient breathing circuit Bpm Breaths per minute Breath Period The length of time between machine initiated breaths Depends on the Breath Rate setting Breath Rate The number of breaths delivered in a minute BTPD Body Temperature at Ambient Pressure Dry Button A push button switch used to toggle a function on or off cmH20 Centimeters of water pressure Controls Any button touch screen icon switch or knob that allows you to modify the ventilators behavior Event An anomalous condition that occurs during ventilator operation Flow The rate at which gas is delivered Measured in liters per minute Ipm Indicators A visual element showing operational status L Liters A unit of volume LED Light Emitting Diode L min Liters per minute A unit of flow Mode An operating state of the ventilator that determines the allowable breath types Monitored Parameter A meas
3. December 2004 96 Vela Ventilators Troubleshooting If The Ventilator Does not Turn ON If you turn the power switch ON and the ON indicator does not illuminate perform the troubleshooting procedures given in Table 5 1 Table 5 1 Troubleshooting Power Up Problems PROBLEM POSSIBLE CAUSE ACTION Ventilator plugged into an AC No power at AC outlet or the Try connecting to a known good AC source but does not power up AC DC select switch is in the ALT power source Make sure the AC DC PWR SOURCE position or the AC switch is in the AC position Make Line Voltage switch is set to the sure the voltage setting of the wrong voltage ventilator matches the voltage of your power source Check the fuse assembly if the ventilator still does not power up Contact your Bird Products Certified Service Technician Check the DC voltage output supply from transformer at J9 Check DC voltage at J3 Black is ground Red is 5 volts DC and Yellow is 14 7 to 20 DC If voltage is not present replace Power Supply PCB Ventilator attached to alternate If the external source is a battery Plug the ventilator into a known good external DC power source but the battery may not be charged or AC source or to a known good does not power up the AC DC select switch may be in battery and see if it powers up If the AC position using a 12VDC power source set the AC DC select switch to the ALT PWR SOURCE position Check the fuse assembly If th
4. Alarm loudness must be set above ambient sound in order to be heard Always have an alternate means of ventilation available whenever the ventilator is in use The operator should not touch the electrical connectors of the ventilator or accessories and the patient simultaneously Due to possible explosion hazard the ventilator should not be used in the presence of flammable anesthetics An audible alarm indicates an anomalous condition and should never go unheeded Anti static or electrically conductive hoses or tubing should not be used within the patient circuit If a mechanical or electrical problem is recognized while running the Operational Verification Tests or while operating the ventilator the ventilator must be removed from use and referred to qualified personnel for servicing Using an inoperative ventilator may result in patient injury Revision B December 2004 12 Cautions Vela Ventilators When a low gas supply alarm occurs the oxygen concentration delivered to the patient will differ from that set on the O2 control setting A source gas failure will change the FIO2 and may result in patient injury The functioning of this equipment may be adversely affected by the operation of other equipment nearby such as high frequency surgical diathermy equipment defibrillators short wave therapy equipment walkie talkies or cellular phones Water in the air supply can cause malfunction of this equipment D
5. 40 Vela Ventilators Manifold Base assembly Figure 3 14 Manifold base assembly early model Vela units only bottom panel amp O2 hose removed 02 sensor placed horizontally for easy access from rear of ventilator Figure 3 15 Manifold Base assembly showing horizontal O2 cell for easy removal 11534 Revision B December 2004 Service Manual Disassembly amp Reassembly Procedures 41 L1534 Removal 1 Remove the power cable top cover and battery tray z Carefully turn the unit onto its side e Remove 2 Phillips countersink screws that hold the safety check valve guard and remove the guard Remove 4 rubber feet If the left panel is installed remove 3 Phillips pan head screws on the left side of the bottom panel and if the front panel is installed remove 2 Phillips pan head screws at the front of the bottom panel Figure 3 15 Removal of safety check valve guard Remove 7 Phillips pan head screws on the outside of the bottom panel Gently remove the bottom panel Remove the three visible o rings from the underside of the unit part number 30018 30023 and 04358see figure 3 X 9 Pull off the oxygen diffuser tube from the nipple and remove it from the channel base see figure 3 15 Figure 3 16 Removing the 02 diffuser tube Installation 1 Carefully turn the unit upside down 2 Attach the curved portion of the oxygen diffuser tube to the
6. cable Ifinstalled use a 3 4 wrench to remove the high and low pressure oxygen fittings from the rear of the unit noting that the high pressure fitting is located above the low pressure fitting see figure 3 18 Figure 3 19 High amp low pressure O2 fittings on back panel 6 7 Figure 3 18 Turbine amp Muffler assembly Remove 5 Phillips pan head screws Disconnect the gray silicone intake and output elbows by gently pulling them out from the muffler tubes Lift the assembly off the manifold base Gently pull up the elbows to remove Installation 1 2 Insert the elbows into the manifold base Set the turbine and muffler assembly onto the manifold Install 5 Phillips pan head screws A If removed during this procedure use a 3 4 wrench to install the high and low pressure oxygen fittings to the rear of the unit noting that the high pressure fitting is located above the low pressure fitting 5 Connect the gray silicone intake and output elbows by inserting them into the muffler tubes Push once in the center of each elbow to properly seat 6 If the front panel is installed connect the cable to J701 on the main PCB connect the green oxygen nebulizer tube and connect the blender cable 7 Install the blender left panel right panel battery tray top cover and power cable Revision B December 2004 48 Vela Ventilators Over Pressure Relief Valve assembly CO Figure 3 2
7. 15781 Do LA December 2004 Revision B L1534 Service Manual Appendix A Contact amp Ordering Information 103 L1534 AA O A PART OF 15869 PART OF 15869 10632 D 14016 7 el on A 10665 PART OF 15895 Revision B 15867E PNEUMATIC DIAGRAM December 2004 2 Oo P s S 3IYNSSIYA LIINI gt DISd OF LY OILYYANYI SMO14 NIDAXO TIV oO SS gt VOA WILSAS LNW EN O314IDIAS ISIMYIHLO SSIINN LON a DILVWAHDS Wall Wd 09 Y3IZIINGIN JMA 330134 1N3198WV 8ns SNISYAL yg q INWA GION310S 1 i i JAWA gionzios JAVA QION310S o o o o JAVA 3 33038 JNNSSIVA Y3DN3NS idiuno JAVA GIOH NOLLVeIASNI 3DIAINO ERETI TO wd10 st Wd1 0 e U U i 3DIAIVO Wd10p H A Wd OF ANSLLWd OL YaSWVHD ONIXIW d YIDNOSNVYL YOSN3S ZO 1 I I 1 1 JUNSSIYA H A IVILNIYISSIO H INIGYAL j 1 1 JUNSSIVA NOLLWIVHX3 YIVIOYLNO YILAJWOTOYIIW 104 yoivinoay ALYS DISdA S8 Or 131NIZO DISd X 0 LIN ZO uals December 2004 B vision Re L1534 Appendix C Specifications Oxygen Supply High Pressure Connector Pressure Range Temperature Humidity Minimum Flow Inlet Fitting Low Pressure
8. 3 10 Flow Sensor PCB assembly Removal 1 Remove the power cable top cover battery tray right panel left panel front panel and main PCB Disconnect the 2 1 16 ID tubes to the main tubing harness Disconnect the following from the flow sensor PCB J1 6 pin grey to main PCB P N 15961 4 Remove the 2 1 4 nuts on the flow sensor PCB 5 Lift off the flow sensor PCB Installation 1 L1534 Position the flow sensor PCB onto the two standoffs Install the 2 1 4 nuts on the flow sensor PCB Connect the following to the flow sensor PCB J1 6 pin grey from the main PCB P N 15961 Connect the 2 1 16 ID tubes from the main tubing harness 2 and 3 with a black line on it Install the main PCB front panel left panel right panel battery tray top cover and power cable Revision B December 2004 38 Vela Ventilators Exhalation Valve Assembly P N 15871 L1534 Dryer tube Figure 3 11 Exhalation Valve Assembly Removal 1 Remove the power cable top cover battery tray right panel left panel and front panel 2 Disconnect the following from the FIO2 monitoring PCB J2 2 pin clear conn to oxygen sensor J3 2 pin blue conn to oxygen inlet solenoid on blender assembly J4 2 pin red conn to nebulizer solenoid assembly on upper rear of blender 3 Remove 2 Phillips pan head screws on the valve cover 4 Lift out the exhalation valve assembly Installation 1 Ensure the dryer tube is secur
9. 4 19 The screen legend changes to read Apply 50 cmH20 Press Button L1534 Revision B December 2004 82 L1534 Vela Ventilators O2 PRESS CALIB PRESSURE CANCEL APPLIED CALIBRATION Apply 50PSI Press Button Status Press A D Min Max Prev OK 0 0404 0224 0592 0404 Pending 50 1219 2085 1781 Figure 4 50 O2 Pressure calibration screen 2 Attach the calibration setup tube to the nebulizer port on the front of the Vela see figure 4 20 Press the Nebulizer membrane button on the front panel to open the solenoid Apply gas from the high pressure gas source at 50 psig pressure When the pressure manometer reads 50 psig press the PRESSURE APPLIED touch screen icon When the calibration is complete the status of the 50 psig pressure line reads OK and an A D value is recorded see figure 4 21 The screen displays SAVE CALIBRATION and CANCEL CALIBRATION Press SAVE CALIBRATION to save and return to the transducer calibration selection screen Figure 4 51 Nebulizer port on the Vela 02 PRESS CALIB SAVE CANCEL CALIBRATION CALIBRATION Status Press A D Min Max Prev OK O 0404 0224 0592 0404 OK 50 1790 1219 2085 1781 Figure 4 52 O2 Pressure calibration screen 3 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 83 Regulator calibration Connect to high pressure inlet on rear High pressure gas of Vela source wall or bottle
10. 85 PSIG PRESSURE SAFETY REGULATOR o RELIEF SOLENO H wie VALVE H NEBULIZER SCHEMATIC NOTE UNLESS OTHERWISE SPECIFIED PNEUMATIC SYSTEM VELA ALL OXYGEN FLOWS CALIBRATED AT 40 PSIG INLET PRESSURE Figure 4 56 Internal adjustment regulator location L1534 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 85 Nebulizer Solenoid ke 40 psig Adjustment Regulator BLEN DER MODU LE 15895 Figure 4 57 Location of 02 Blender solenoids 11534 Revision B December 2004 86 Vela Ventilators Oxygen Sensor Calibration From the Special Functions menu press the FIO2 MON CALIBRATION touch screen icon arta TRANSDUCER TRANSDUCER VERSION HOUR fell TESTS INFO METER FI02 MON VENT EXIT CALIBRATION SETUP Figure 4 58 Special Functions menu The following screen will appear FI02 MONITOR SENSOR CALIBRATION CALIBRATION CALIBRATION Ambient Valid 408 100 Valid 2344 Figure4 59 FiO2 Sensor Calibration Ambient Air Attach 100 O2 at 50psig to the high pressure inlet on the rear of the Vela Press the START AMB CALIBRATION touch screen icon The machine will take 3 5 minutes to perform the calibration and the following screen will appear while the calibration is in progress FI02 MONITOR SENSOR CALIBRATION START AMB START 100 EXIT CALIBRATION CALIBRATION Ambient Cal In Progress Ambient Valid 367 100 Valid 2344 Figure 4 60 Ambient Calibr
11. C power cord The AC power module is a universal module for A C voltages from 100 240 volts Using a flat bladed screwdriver pry open the cover Using the same screwdriver loosen and pull out the red fuse holder as shown in figure 5 4 Remove the fuses from both sides of the fuse holder and replace with fuses P N 71612 available from VIASYS Healthcare customer support Figure 5 3 Remove the power cord guard Figure 5 4 Pry out the fuse holder WARNING It is important that the fuses are replaced with the same type and value as those removed Failure to do so can result in ventilator malfunction Revision B December 2004 Service Manual Chapter 5 Maintenance amp Troubleshooting 91 To insert the fuse holder containing the new fuses make sure the 4 metal tabs are facing up as shown in figure 5 5 and carefully push the fuse holder in to the A C power module until it seats Figure 5 5 Insert fuse holder with metal tabs showing The Annual 5000 hour P M Procedure Replacing the ambient air filter The Ambient Air Filter is located at the rear of the ventilator below the rear panel It is a high density foam insert To remove it pinch and pull away from the ventilator as shown in figure 5 6 The filter will lift out Replace with a clean filter To prevent the entry of dust into the ventilator press the filter in around the edges to ensure a snug fit Figure 5 6 Remove high densit
12. Connector Pressure Range Maximum Flow Inlet Fitting Electrical Supply AC Power Supply 40 to 85 psig Supply Oxygen 10 to 40 C 50 to 104 F Dew Point of gas should be 1 7 C 3 F below the ambient temperature minimum 80 LPM at 20 psig CGA DISS type body No 1240 0 to 0 5 psig Supply Oxygen 80 LPM Ya inch tapered The ventilator operates within specification when connected to the following AC power supplies Nominal 100 VAC 120 VAC 230 VAC 240 VAC DC Power Supply Voltage Range Frequency Range 85 to 110 VAC 47 to 65 Hz 102 to 132 VAC 55 to 65 Hz 196 TO 253 VAC 47 to 65 Hz 204 TO 264 VAC 47 to 65 Hz The ventilator can also operate from a 48 VDC power source internal battery Internal Battery The ventilator operates within specification for approximately 3 hours with a fresh fully charged battery under moderate load Maximum charge time for a full charge is 8 to 12 hours L1534 Revision B December 2004 106 Vela Ventilators Data Input Output Analog Inputs The ventilator provides up to 8 programmable channels for analog signal inputs Each channel shall be scalable for the input ranges specified Ranges 0 to 1 VDC 0 to5 VDC 0 to 10 VDC Resolution 0 25 mV for 0 to 1 VDC 1 37 mV for 0 to 5 VDC 2 5mV for 0 to 10 VDC Analog Outputs L1534 The ventilator provides 4 signals at the analog output connector 1 Airway Pressure Paw Range 60 to 1
13. Run this test to check the front panel membrane switches to make sure they are working properly 1 Press the SWITCH TEST icon 2 Press each membrane switch control in turn Watch for the name of the control to appear in the message bar at the bottom left of the touch screen as follows L1534 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 57 3 Press the SWITCH TEST icon again to exit the test Alarm Test Run this test to check the audible alarm 1 Press the Alarm Test touch screen icon to start the test The audible alarm sounds 2 Press the Alarm Test touch screen icon again to silence the audible alarm and exit the test Filter Test Run this test to check the differential pressure across the turbine inlet filter A high differential pressure may indicate a dirty or occluded filter 1 Press the Filter Test touch screen icon The turbine accelerates flow to 140 lpm and checks the differential pressure to make sure it is within range At the end of the test the ventilator displays a pass or fail message If the test passes the following message appears X X Passed where x x is the average turbine differential pressure and P indicates the test passed If the test fails the following message appears X X Failed where x x is the average turbine differential pressure and F indicates the test failed L1534 Revision B December 2004 58 Vela Ventilators 2 If the test fails check the r
14. SAVE CANCEL CALIBRATION CALIBRATION Status Press A D Min Max Prev OK 0 1107 1042 1200 1106 OK 60 1790 1445 2091 1755 Figure 4 42 Exhalation Pressure Transducer Calibration screen 3 8 When the calibration is completed the screen displays OK for both calibrations SAVE CALIBRATION and CANCEL CALIBRATION Press SAVE CALIBRATION to save and return to the transducer calibration selection screen CAUTION Make sure that your pneumatic connection is to the Exhalation Pressure transducer before applying 60 cmH20 pressure If the 60 0 cmH20 pressure is inadvertently applied to the Exhalation Differential Flow transducer it will permanently damage the transducer Turbine Pressure Transducer 1 From the CALIBRATION SELECT screen press TURB PRESS XDCR 2 The first Turbine Pressure calibration screen displays showing both calibration pressures as pending and with the legend Apply 0 cmH20 and press button TURB DIFF PRESS CALIB PRESSURE CANCEL APPLIED CALIBRATION Apply 0cmH20 Press Button Status Press A D Min Max Prev Pending D 0731 0889 0846 Pending 60 1865 1981 1956 Figure 4 43 Turbine Pressure Zero calibration screen 1 2 Disconnect tubing from the transducer before continuing with the procedure See figure 4 6 for location of the transducers 3 With no tubing attached to the turbine pressure transducer press the PRESSURE APPLIED touch screen icon for zero calibration 4 The screen le
15. filter performance check C 7 Check the patient breathing circuit on the ventilator and conduct a leak test O Make sure all needed components are firmly attached in the circuit 8 Exit the UVT and conduct performance test Set the parameters to the following recommended settings Mode AIC Inspiratory Pause OFF Tidal Volume 500ml Sigh OFF Peak Flow 60 Ipm Square Waveform OFF Breath Rate 12 bpm Bias Flow 10 Ipm PEEP CPAP 5cmH20 Altitude Current Sensitivity OFF Inspiratory Time 0 3 sec Pressure Support OFF Termination Sensitivity 25 Pressure Control OFF Variable Time Termination 3 0 sec 02 21 Flow Termination OFF L1534 Revision B December 2004 74 Set the variable alarm controls as follows Vela Ventilators Alarm Control Setting High Pressure PIP plus 5 cmH20 Low Pressure PIP minus 10 cmH20 Low Minute Volume 4 Liters High Breath Rate 16 bpm Apnea Interval 20 secs Verification Step Check amp Initial 9 After at least two minutes of operation compare the displayed readings to the O following Display Reading Minute Volume 6L 1 2L Tidal Volume 500m 100ml E Ratio 1 6 1 10 Breath Rate 12 bpm 2 bpm PIP Equal to Manometer 5 MAP NA PEEP 5 cmH20 2 cmH20 Inspiratory Time 0 68 sec 0 5 sec Verification Step Check amp Initial 10 Check alarms A Power Fail Check O B High Pressure Limit Check El Signature Procedure Complete L153
16. lt LATEST uP 104 75h 66 Turbine S N mismatch 103 75h 64 MSP vent powered up EN 102 74h 64 MSP vent powered up DOWN 101 74h 66 Turbine S N mismatch 100 74h 64 MSP vent powered up 99 74h 66 Turbine S N mismatch EN 98 74h 64 MSP vent powered up 97 71h 67 AC power alarm occurred Figure 4 3 The Events screen 11534 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 61 Transducer Data Press the Transducer Data screen icon RANSDUCER VERSION DATE TIME EVENTS mp ere mee Gm Fi02 MON VEN ALIBRATION SETUP Figure 4 4 Press the Transducer Data screen icon The Transducer Selection screen displays TRANSDUCER SELECTION SET SET SET EXIT ANALOG 1 ANALOG 2 ANALOG 3 Turb Diff Pressure Exhi Flow Diff Press Exhelation Flow Figure 4 5 Transducer data selection screen From here you can set the analog data display associated with each transducer For example if you press the SET ANALOG 0 screen icon as shown in figure 4 X the following options display in a drop down menu Exhl Flow Diff Press Exhalation Flow Turbine Flow Turbine Speed TRANSDUCER SELECTION ANALOGO ANALOG 1 ANALOG 2 ANALOG 3 b Diff Pressure Exh Flow Diff Press Exhelation Flow Figure 4 6 Transducer data selection options L1534 Revision B December 2004 62 Vela Ventilators In this example the transducer associated with Analog 0 is set to display Turbine Speed Set each analog valu
17. nipple and push into place Place the remaining portion of the tube inside the channel base in the underside of the unit 3 Insert the three o rings into the underside of the unit noting that each o ring has a different shape A Ensure that all three o rings are in place and position the bottom panel over the three screw holes at the front Revision B December 2004 42 L1534 Vela Ventilators Install 7 Phillips panhead screws on the bottom panel If the left panel is installed install 3 Phillips pan head screws on the left side of the bottom panel and if the front panel is installed install 2 Phillips pan head screws at the front of the bottom panel Install 4 rubber feet Install the safety check valve guard with 2 Phillips countersink screws With the unit upright install the battery tray top cover and power cable Revision B December 2004 Service Manual Disassembly amp Reassembly Procedures 43 Oxygen Sensor part number 15972 For early model Vela units do the following Removal 1 Remove the power cable top cover battery tray left panel and bottom panel 2 Turn the unit on its side 3 Remove the 1 mounting nut from the manifold base see figure 3 14 and pull the sensor from the manifold Note To remove the O2 sensor only when complete disassembly is not required simply grasp the sensor in place and unscrew from the retaining nut leaving the nut in place in the base Ins
18. or to request service on your ventilator contact VIASYS Healthcare Customer Care Technical Support Hours 7 00 AM to 3 30 PM PST Monday through Friday Phone 760 778 7200 Fax 760 778 7377 VIASYS Healthcare Customer Care Helpline Hours 24 hours seven days a week Phone 800 934 2473 From within the US Fax 760 778 7377 VIASYS Healthcare Critical Care 1100 Bird Center Drive Palm Springs CA 92262 8099 U S A Phone 760 778 7200 800 328 4139 Fax 760 778 7274 L1534 Revision B December 2004 1 00 Vela Ventilators Ordering Parts To obtain Vela ventilator parts contact customer service at Customer Service Hours 7 00 Am to 3 30 PM PST Monday through Friday Phone 800 328 4139 760 778 7200 Fax 760 778 7274 L1534 Revision B December 2004 Appendix B Diagrams amp Schematics Wiring Diagram Tubing Diagram Pneumatic Schematic L1534 Revision B December 2004 Vela Ventilators 102 gt lt x EK LI lt O Y wZ EE Le GE Bes S onn g Fa on ai S sim S E d ART OF 15870 T 15974 J Hg 2 al Pros P gt Di ee zg 15888 PART OF 15894 PART OF 10633 PART OF 15895 ART OF 15892 ART OF 15892 PART OF 15892 PART OF 15892 15890 15957 15126 17 3 Cl NY R E ar nemmen A
19. power cable before removing the instrument cover and disconnect the battery once the top cover and battery tray have been removed to prevent injury and or damage to the VELA Ventilator System see figure 3 1 CAUTION The Vela contains ESD susceptible components Ensure you are properly grounded before performing any service or maintenance procedures and store ESD susceptible electrical components in an anti static bag to prevent damage to the component Note When the batteries are disconnected the system will automatically re set the battery status memory and will initiate an 18 hour re charge cycle upon re connect During this period the red DC status light will remain on If the DC status light remains lit after the initial charging period has expired contact VIASYS tech support as described in Appendix A for a replacement battery Note Do not cut the main harness tie wraps since the entire harness is regarded as one component Note The terms left and right refer to a view from the front of the unit looking towards the rear Revision B December 2004 24 Vela Ventilators Required Tools Long amp short Philips screwdrivers 11 32 Nut Driver Flat bladed screwdriver Digital Volt Meter Ya Nut Dirver Tack puller or Needle nosed pliers 5 16 Nut Driver Diagonal cutters 7 8 Nut Driver 1 and open ended wrenches Disassembly and Reassembly Procedures To perform a c
20. screws on the main PCB 4 Lift the main PCB out of the front panel Installation 1 Position the main PCB onto the standoffs in the front panel 2 Tighten 7 Phillips pan head screws on the main PCB L1534 Revision B December 2004 Service Manual Disassembly amp Reassembly Procedures 35 3 Connect the following to the main PCB J801 20 pin from J801 on the flow sensor PCB in harness J1210 5 pin gray top green from the flow sensor PCB in P N 15961 harness J3 10 pin from the flow sensor PCB in P N 15961 harness J1211 5 pin blue wire top from the SVGA PCB J1 5 pin orange wire from SVGA PCB position wire on 214 pin from right J1 5 pin gray left from SVGA PCB J601 5 pin from SVGA PCB Note The J1 position on the main PCB is located above the J601 connector and accepts two 5 pin connectors the connector with one wire above the connector with three wires 4 Install the front panel left panel right panel battery tray top cover and power cable L1534 Revision B December 2004 36 L1534 Ow TOUCH SCREEN PM 66100 TO POWER SUPPLY ED PM 15894 4400 Vela Ventilators FLOW SENSOR ASSY PAM 15991 Figure 3 9 Front Panel wiring diagram Revision B O OPTICAL ENCODER PMN 56060 30011 15869 WIRING DIAGRAM FRONT PANEL ASSY December 2004 Service Manual Disassembly amp Reassembly Procedures 37 Flow Sensor PCB assembly P N 15991 Figure
21. sssssssssssssssrnsrnnnnunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnna 89 Routine Maintenance Procedures ssscssscssssesessscsescscssscscscecscscseseseseseseaeseaeseesnenenenesenenensnensees 89 Replacing the software e le EE 89 IEN BEE 90 L1534 Revision B December 2004 Service Manual 7 The Annual 5000 hour P M ProC Qure sssssssssssssssssssesesesssesecsnsnssnseeesesseseenesssseesesssasecenensanee 91 Replacing the ambient air filter siscissctcidesiwsiivatielibiot adil dee arisen Eeer CEA ek 91 Replacing me TAI KEE 91 Replacing the filter retaining ring amp check valve on the low pres O2 fitting 0 eee eseeeeteeeeeteeetenenees 92 Replacing the filter retaining ring and check valve on the hi pressure ng 92 Replacing the muffler and muffler filter assemblies seececeesececeeseeeseseesecesseeeseseseesseteceeseseeneeteses 93 Replacing the left panel w power DCH 95 TROUDIGSHOOUING E 96 lf The Ventilator Does not Turn LN eet EENS 96 Reviewing the Transducer WavefOris ssssssscssssscsestssssecesnstsnsecsssssescessesessesessisesecsessnsecesessines 97 Appendix A Contact amp Ordering InformatioN occconconncmmnmncerarnanss 99 HOW t Gall FOR SUD DOI E 99 Ordering E 100 Appendix B Diagrams 8 Schematics ccsccseccsesssessessssseseecseeseesssrseseseeeeneesaeesenaeaees 101 Appendix SPECIICATIONS cirio tirita 105 id e 105 High EE AM ed 105 Low Pressure CON li 105 Electrical SUP ri 105 AG e
22. the upper front of the right panel 4 5 Gently lift out the panel and the power PCB Lay the panel flat and make the following L1534 disconnections Ref on Pwr i Cable Assy PCB Connector Desc Connection made P Number J1 26 pin ribbon cable to J2 on main PCB P N 15494 J2 3 pin to fan assembly J5 14 pin to J5 on main PCB in main harness J6 10 pin to P2 on turbine motor driver PCB J7 small 2 pin to main power switch J300 large 2 pin to battery DC power in main harness J400 4 pin quick disconnect to SVGA PCB P1 L N AC line in to power black power white neutral P N 15890 to ground lug ground Note Do NOT remove the connector from J4 of the power PCB Installation Make the following connections to the Power PCB Ref on Pwr gt Cable Assy PCB Connector Desc Connection made P Number J1 26 pin ribbon cable from J2 on main PCB P N 15494 J2 3 pin from fan assembly J5 14 pin from J5 on main PCB in main harness J6 10 pin from P2 on turbine motor driver PCB J7 small 2 pin from main power switch J300 large 2 pin from battery DC power in main harness J400 4 pin quick disconnect from SVGA PCB P1 L N AC line in to power black power white neutral P N 15890 from ground lug ground WARNING Ensure that the power cables are correctly connected to prevent injury and or damage to the unit Revision B December 2004
23. using embedded light emitting diodes LEDs The membrane panel consists of membrane switches which are read by the monitor CPU The switches form a matrix of rows and columns A key closure causes an interrupt to the monitor CPU which responds by scanning the key matrix to determine which key has been pressed Light Emitting Diodes Leds Some of the membrane keys require LED s to indicate when the key is active The LED s are embedded into the membrane panels Optical Encoder The optical encoder allows settings to be modified The setting is selected by pressing a soft key on the LCD and then modified by turning the optical encoder data dial to change the value When the encoder is rotated two pulse streams are generated phase A and B When the encoder is turned clockwise phase A leads B by 90 degrees When the direction is counter clockwise phase B leads A by 90 degrees The electronics uses the phase information to drive an up down counter which is read by the monitor CPU The optical encoder is not interrupt driven and therefore must be polled by the monitor CPU Back Light Inverter The back light inverter converts 5 VDC into the high frequency AC voltage necessary to power the LCD back light which is used to illuminate the LCD Power System The Power System conditions and controls electrical energy from the AC line input and the internal battery When energy is available from the AC line the ventilator operates from thi
24. vicinity of high frequency surgical diathermy equipment defibrillators or short wave therapy equipment Electromagnetic interference could disrupt the operation of the ventilator Intended Use Notice The Vela Ventilators are designed to provide ventilator support for the critical care management of infant pediatric or adult patients with compromised lung function They are intended to provide continuous respiratory support in an institutional health care environment They should only be operated by properly trained clinical personnel under the direction of a physician Regulatory Notice Federal law restricts the sale of this device except by or on order of a physician IEC Classification Type of Equipment Medical Equipment Class 1 type B Adult Pediatric Infant Lung Ventilator Declaration of Conformity Notice L1534 This medical equipment complies with the Medical Device Directive 93 42 EEC and the following Technical Standards to which Conformity is declared EN60601 1 EN60601 1 2 ISO 9001 EN 46001 0086 EU Notified Body BSI Reg No 0086 Tradenames Vela If you have a question regarding the Declaration of Conformity for this product please contact VIASYS Healthcare Critical Care Division at the number given in Appendix A Revision B December 2004 Service Manual Front Matter 1 1 Safety Information Please review the following safety information prior to operating the ventilator Attempting to
25. 0 Over Pressure Relief Valve assembly with o ring Removal 1 Remove the power cable top cover battery tray right panel left panel and front panel 2 Use a flat screwdriver to pry the valve from its location at the front left side of the manifold base 3 Remove the o ring P N 08963 4 Using a flat screwdriver in the middle slot unscrew the adjuster in the middle of the valve and remove the two o rings P N 30005 in the relief valve poppet and P N 30017 on the brass adjuster Installation Install the two o rings P N 30005 in the relief valve poppet and P N 30017 on the brass adjuster 2 Slide the housing over the poppet and screw clockwise into the housing tightening with a flat screwdriver 3 Slide the valve into place in the manifold base ensuring that the adjustment screw is in the notch CAUTION Do not adjust the screw in the relief valve since it must be factory calibrated 4 Push until the valve is seated into place 5 Install the front panel left panel right panel battery tray top cover and power cable 11534 Revision B December 2004 Service Manual Disassembly amp Reassembly Procedures 49 Turbine Motor Driver PCB part number 71597 L1534 Removal 1 Remove the power cable top cover battery tray right panel 2 Disconnect the following from the turbine motor driver PCB P1 8 pin to the turbine P2 10 pin to J6 on the power PCB 3 Remove the 2 keps screws 4 Lift
26. 11 Fax 760 778 7274 Fax 31 30 2286 244 www ViasysCriticalCare com Trademark Notices Vela is a registered trademark of VIASYS Healthcare Critical Care Division in the U S and some other countries All other brand names and product names mentioned in this manual are trademarks registered trademarks or trade names of their respective holders EMC Notice L1534 This equipment generates uses and can radiate radio frequency energy If not installed and used in accordance with the instructions in this manual electromagnetic interference may result The equipment has been tested and found to comply with the limits set forth in EN60601 1 2 for Medical Products These limits provide reasonable protection against electromagnetic interference when operated in the intended use environments described in this manual The ventilator has been tested to conform to the following specifications MIL STD 461D 1993 MIL STD 462D 1993 EN55011 1991 IEC 1000 4 2 1994 IEC 1000 4 3 1994 IEC 1000 4 4 1994 IEC 1000 4 5 1994 QUASI STATIC 1993 This ventilator is also designed and manufactured to comply with the safety requirements of IEC 601 1 IEC 601 2 12 CAN CSA C22 2 No 601 1 M90 and UL 2601 1 Revision B December 2004 10 Vela Ventilators MRI Notice This equipment contains electromagnetic components whose operation can be affected by intense electromagnetic fields Do not operate the ventilator in a MRI environment or in the
27. 2004 18 Vela Ventilators Safety System The mechanical safety system ensures that the patient can breath spontaneously from room air and that the patient pressure is limited to a maximum preset value in the event of a ventilator malfunction This mechanical system consists of a pressure relief valve and a sub ambient relief valve In the event of a ventilator malfunction that results in high pressure the pressure is limited by a relief valve The relief valve consists of a user adjustable spring loaded poppet acting against a seat In the event the ventilator fails to deliver a breath the patient may inspire spontaneously by drawing room air through the sub ambient relief valve Materials exposed to patient gas are aluminum compatible rubber and compatible plastics Inspiratory Hold Valve The inspiratory hold valve is an electromechanical solenoid valve If activated the inspiratory hold valve blocks flow between the flow delivery system and the patient This valve is activate during inspiratory hold and maximum inspiratory pressure maneuvers Materials exposed to patient gases are aluminum and compatible rubber and plastic Oxygen Blending System The optional oxygen blending system is made up of an O2 Inlet Transducer five solenoid valves five flow orifices an inlet filter and an accumulator When a breath is initiated the turbine draws mixed gas from the accumulator Filtered air is drawn into the accumulator through the fil
28. 4 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 75 Calibration Note All personnel performing preventive maintenance and product repair must be trained and certified by VIASYS Healthcare to service the product Test Set up To pressure manometer 0 to 60cmH20 High pressure gas source wall or bottled with 0 50 psig regulator attached To calibration port To pressure manometer Figure4 35 Calibration setup 2 0 60 psig Power Up Verification Service Verification Tests 1 Remove the top cover and battery tray as described in Chapter 3 2 Locate DIP Switch 1 on the Main PCBA on the rear of the front panel Place it in the ON position as shown in figure 3 L1534 Revision B December 2004 76 Vela Ventilators BIRD C 1995 D TURBINE EEPROM IS N XXXXXXXXXXXX EEEE EE DC 3 Connect the Vela to a properly grounded AC source Turn on power to the unit Figure 4 36 Ma
29. 40 cmH20 Scale 1 cmH20 25 mV Accuracy 50 mV or 5 of reading whichever is greater Zero Offset 1 5 VDC at 0 cmH20 2 Flow Inspiratory Expiratory When selected the ventilator provides a continuous analog voltage representative of inspiratory flow minus expiratory flow Range 300 to 200 LPM Adult Scale Factor 1LPM 10mV Adult 1LPM 25mV Pediatric 1LPM 50 mV Neonate Accuracy 10 of reading or 30 mV whichever is greater Zero Offset 3 0 VDC at 0 LPM Machine When selected the ventilator provides a continuous analog voltage representative of machine delivered flow Range Oto 200LPM Adult Scale Factor 1LPM 25 mV Adult 1LPM 50 mV Pediatric 1LPM 100 mV Neonate Accuracy 10 of reading or 30 mV whichever is greater Zero Offset None Revision B December 2004 Service Manual Appendix B Specifications 107 3 Volume Range 1 00 to 4 00L Adult Scale Factor 1L V Adult 1mL 5mV Pediatric 1mL 10mV Neonate Accuracy 10 of reading or 30 mV whichever is greater Zero Offset 1 000 VDC 4 Breath Phase The ventilator provides a continuous analog voltage representative of breath phase Inspiration 5 VDC Expiration 0 VDC Digital Communication The ventilator is constructed with one RS 232 port for bi directional communication of data CAUTION This is a non operational port Do not make connection Printer The ventilator is constructed with a standard 2
30. 5 pin female Centronics parallel printer port CAUTION This is a non operational port Do not make connection Remote Nurse Call The ventilator has a modular jack configured to interface with external systems that are either wired for normally open N O close on alarm or normally closed N C open on alarm signals Video Output The ventilator is constructed with a video output connector CAUTION This is a non operational port Do not make connection Atmospheric amp Environmental Specifications Temperature and Humidity Storage Tenperature 20 to 60 C 4 to 140 F Humidity 10 to 95 RH non condensing L1534 Revision B December 2004 108 Vela Ventilators Operating Temperatire 5 to 40 C 41 to 104 F Humidity 15 to 95 RH non condensing Barometric Pressure 760 to 545 mmHg Physical Dimensions Overall Size 13 W x 14 5 D x 12 H Weight lt 38 Ibs L1534 Revision B December 2004 Appendix D Service Event Codes L1534 CODE MSP unknown breath phase MSP unknown breath phase 1 All required queues were not active on power up 14 A queued pass around message did not get back 15 A queued pass around message was responded by the wrong task 16 The queue of IOP messages was full Indicates a problem with the turbine differential pressure transducer 23 The turbine is running in reverse Theturbineisrunninginreverse The 02 sensor is disconne
31. ECT Screen The EXHL PRESS CALIB screen displays showing both pressures as Pending and with the instruction Apply 0 cmH20 and press button EXHL PRESS CALIB APPLIED ALIBRATION Apply 0cmH20 Press Button Status Press A D Min Max Prev Pending 0 1042 1200 1106 Pending 60 1445 2091 1755 Figure 4 40 Exhalation Pressure Transducer Calibration screen 1 2 Disconnect tubing from the exhalation pressure transducer before continuing with the procedure see figure 4 6 for location of the transducers With no tubing attached to the exhalation pressure transducer press the PRESSURE APPLIED touch screen icon for zero calibration 3 When the calibration is complete the screen legend changes to read Apply 60 cmH20 Press Button and the zero pressure value now says OK with an A D value added EXHL PRESS CALIB PRESSURE CANCEL APPLIED CALIBRATION Apply 60cmH20 Press Button Status Press A D Min Max Prev OK 0 1107 1042 1200 1106 Pending 60 1445 2091 1755 Figure 4 41 Exhalation Pressure Transducer Calibration screen 2 5 Attach the calibration setup shown in figure 1 to the Exhalation Pressure Transducer port see figure 4 for location 6 Turn the calibration syringe handle clockwise to generate positive pressure L1534 Revision B December 2004 78 Vela Ventilators 7 When the pressure manometer reads 60 cmH20 0 6 cmH20 press the PRESSURE APPLIED touch screen icon EXHL PRESS CALIB
32. MAIN SCREW 6 32 X 3 8 STL ZN PLT PPH PNH PCBA VELA VIDEO SVGA PCB IC PAL PROGRAMMED DISPLAY MODULE ASSY BEZEL DISPLAY SWITCH MEMBRANE NUT 4 40 LOCKING HEX STEEL NUT 1 4 28 E KEPS TOUCHSCREEN 10 4 RESISTIVE TAPE FOAM 025 THK 31 WIDE TWO SIDED OPTICAL ENCODER NUT HEX WASHER LOCK 3 8 CONN FTG 1 8 TUBE TAPER CONN ASSY FLOW SENSOR BHD VELA CABLE ASSY FLOW SENSOR MAIN BOARD CABLE ASSY VIDEO BOARD TO POWER CABLE ASSY VIDEO BOARD TO MAIN BOARD KNOB SPINNER 1 50 SCR 6 32X1 4 SS PPH PNH TUBING ASSY 1 8 X 1 16 Commonly found hardware items are not supplied by VIASYS Healthcare L1534 Revision B U M EA EA EA EA EA EA EA EA EA EA EA RL EA EA EA EA EA EA EA EA EA EA EA December 2004 34 Vela Ventilators Kai ee DEE A p ei i a MAA H V Figure 3 8 Front panel with main PCB Main PCB on Front Panel P N 52130 Removal 1 Remove the power cable top cover battery tray right panel left panel and front panel 2 Disconnect the following from the main PCB J801 20 pin to J801 on the flow sensor PCB in harness J1210 5 pin gray top green to the flow sensor PCB in P N 15961 harness J3 10 pin to the flow sensor PCB in P N 15961 harness J1211 5 pin blue wire top to the SVGA PCB J1 5 pin orange wire to SVGA PCB position wire on 24 pin from right J1 5 pin gray left to SVGA PCB J601 5 pin to SVGA PCB 3 Loosen 7 Phillips pan head
33. R TRANSDUCER VERSION EVENTS SEN TESTS CN DATE TIME FI02 MON VENT CALIBRATION SETUP Figure 4 24 Exit Special Functions The ventilator will begin operation at previously selected settings Set up the patient and ventilator operational settings per the instructions your Operator s Manual L1534 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 71 Verification tests 1 Before attaching the Vela to a new patient perform the following Operational verification checks 2 Turn on the Vela choose New Patient and Accept This will return all settings to the defaults 3 To check monitor performance allow the ventilator to operate for two minutes View the monitored parameters The values should appear as follows Parameter Value Minute volume d 3 Check the alarms as follows a Power Fail Check i Remove the power cord from the wall The ventilator should do the following Switch to battery power Sound the audible alarm Turn the AC Power Source indicator OFF Display the BATTERY ON message in the alarm window a F Ory gt LED for internal battery will light ii Press the Alarm Reset button to clear the alarm iii Plug the AC power cord back into the wall socket b High Pressure Limit Check i Lower the High Pressure Alarm setting to 5 cmH20 below the Peak Inspiratory Pressure PIP When the ventilator cycles to inspiration and the high pressure limit is violated t
34. Service Manual Vela Ventilator Systems December 2004 Revision History Date Revision Pages Changes March 2002 X1 All Initial Draft April 2002 X2 All Added Engineering Drawings Theory of Operation Calibration and PM procedures June 2002 X3 All Added Extended Functions and UVT Test Screens Added Error Codes August 2002 A All Final review amp engineering release Modified OVP Calibration and screens December 2004 B 39 Replaced Figure 3 13 Umbrella Check Valve with Figure 3 13 Umbrella Check Valve P N 21950 L1534 Revision B December 2004 Service Manual 3 Warranty THE Vela ventilator systems are warranted to be free from defects in material and workmanship and to meet the published specifications for two 2 years or 8 000 hours whichever occurs first The turbine only is warranted to be free from defects in material or workmanship for five 5 years or 40 000 hours whichever occurs first The liability of VIASYS Healthcare Critical Care Division referred to as the Company under this warranty is limited to replacing repairing or issuing credit at the discretion of the Company for parts that become defective or fail to meet published specifications during the warranty period the Company will not be liable under this warranty unless A the Company is promptly notified in writing by Buyer upon discovery of defects or failure to meet published specif
35. TTT AAA R 105 DC POWER SUPPLY ceci id Iii Das ii Aida IAE idas 105 sterput ege a Eai 106 Ee OT 106 Analog CUM AES tt da 106 Diga COMMUNES 107 A saa Me clans legis ai 107 Remote Nurse Call iseci eebe dd 107 Video De TI 107 Atmospheric amp Environmental Specificatons ee 107 Temperature and Humidity E 107 Barometie Press o ones A a 108 PhySiGal DIMAS ro 108 Overall SIZE ii a ln a e hte O 108 Wear dci eet il do EE 108 11534 Revision B December 2004 8 Vela Ventilators Appendix D Service Event Codes sscsssscsssssrsssseseseesseeeseesesessseeeeesnensanseenseseenses 109 Appendix E Error Messages sssssescesssssssssssssseseseseanes Error Bookmark not defined lOs A RdA 112 o EE 114 L1534 Revision B December 2004 Vela Ventilators Notices Copyright Notice Copyright 2001 VIASYS Healthcare Critical Care Division California This work is protected under Title 17 of the U S Code and is the sole property of the Company No part of this document may be copied or otherwise reproduced or stored in any electronic information retrieval system except as specifically permitted under U S Copyright law without the prior written consent of the Company For more information contact World Headquarters European Office 1100 Bird Center Drive Rembrandtlaan 1b Palm Springs CA 92262 8099 3723 BG Bilthoven U S A P O Box 299 3720 AG Bilthoven Phone 760 778 7200 The Netherlands 800 328 4139 Phone 31 30 2289 7
36. advertently applied to the Exhalation Differential Flow Transducer it will be permanently damaged and require replacement L1534 Revision B December 2004 80 Vela Ventilators Exhalation Flow Transducer Calibration 1 From the CALIBRATION SELECT screen press EXL FLOW XDCR The first Exhalation Differential Pressure Flow calibration screen displays EXHL DIFF PRESS CALIB co CANCEL APPLIED Ea Apply 0cmH20 Press Button Status Press A D Min Max Prev Pending 0 0714 0906 0816 Pending 03 2260 2428 2362 Figure 4 46 Exhalation Differential Pressure Flow screen 1 2 Disconnect tubing from the transducer before continuing with the procedure See figure 4 6 for location of the transducers 3 With no tubing attached to the transducer press the PRESSURE APPLIED touch screen icon for zero calibration 4 When the calibration is complete the status of the zero pressure line reads OK and an A D value is recorded The screen legend changes to read Apply 3 cmH20 Press Button EXHL DIFF PRESS CALIB co CANCEL APPLIED ca Apply 3cmH20 Press Button Status Press A D Min Max Prev OK 0 1810 0714 0906 0816 Pending 03 2260 2428 2362 Figure 4 47 Exhalation Differential Pressure Flow screen 2 5 Attach the calibration setup shown in figure 1 to the Exhalation Differential Flow Transducer port P2 see figure 4 6 for location 6 Turn the calibration syringe handle clockwise to generate p
37. ar It can be damaged if care is not taken when removing the cover Make sure that the cover clears this cable before sliding it back Installation 1 Install the top cover by sliding it toward the front of the unit over the side rails and snap into place Install the 4 Phillips pan head screws in the back panel Do not re install the 3 Phillips pan head screws in the upper rear of the front panel if present They have been removed from later versions of the Vela 4 Install the power cable Figure 3 3 Cover Assembly from the rear L1534 Revision B December 2004 26 Vela Ventilators Battery Tray Part Number 10633 L1534 Removal 1 Remove the power cable and top cover 2 Remove the 4 Phillips pan head screws in the battery tray 3 Lift the battery tray out of the unit 4 Disconnect the batteries from the white Molex DC power connector see figure 3 4 Figure 3 4 Large white Molex battery disconnect To release connector push in locking tabs To attach push until locking tabs engage Note When the batteries are disconnected the system will automatically re set the battery status memory and will initiate an 18 hour re charge cycle upon re connect During this period the red DC status light will remain on If the DC status light remains lit after the initial charging period has expired contact VIASYS tech support as described in Appendix A for a replacement battery Installation Con
38. ation in progress 11534 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 87 When calibration is complete the following screen will appear showing the new ambient value F102 MONITOR SENSOR CALIBRATION START AMB START 100 EXIT CALIBRATION CALIBRATION Ambient Valid 357 100 Valid 2344 Figure 4 61 Ambient calibration complete showing new value Press the START 100 CALIBRATION touch screen icon The calibration will take 3 5 minutes during which time the following screen will appear F102 MONITOR SENSOR CALIBRATION CALIBRATION CALIBRATION 100 Cal In Progress Ambient Valid 357 100 Valid 2002 Figure 4 62 100 FIO2 calibration in progress When the calibration is complete the following screen will appear FI02 MONITOR SENSOR CALIBRATION START AMB START 100 EXIT CALIBRATION CALIBRATION Ambient Valid 357 100 Valid 2054 Figure 4 63 FIO2 calibration complete new values showing If the calibration values are acceptable press EXIT to exit the calibration sequence L1534 Revision B December 2004 88 Vela Ventilators L1534 Revision B December 2004 Chapter 5 Maintenance amp Troubleshooting Routine Maintenance Procedures Replacing the software PCMCIA cards Occasional software upgrades may require replacement of the internal PCMCIA card that drives the Vela This is easily access by removing the screws holding the ventilator cover and sliding the cover of
39. cedures the accuracy of the instruments must be verified by a testing laboratory The laboratory master test instruments must be traceable to the NIST National Institute of Standards Technology or equivalent When variances exist between the indicated and actual values the calibration curves provided for each instrument by the testing laboratory must be used to establish the actual correct values This certification procedure should be performed at least once every six months More frequent certification may be required based on usage Long amp short Philips screwdrivers Pressure Manometer cmH20 and psig Flat bladed screwdriver Adult Test Lung P N 33754 Ya Nut Dirver Adult Patient Circuit P N 10684 5 16 Nut Driver Variable Orifice Flow Sensor assembly P N 15972 7 8 Nut Driver Valve Body P N 20005 11 32 Nut Drivel Tapered nipple P N 00680 Digital Volt Meter Hex nut P N 00822 Tack puller or Needle nosed pliers Regulator P N 6754 Diagonal cutters 1 8 ID Tubing tee P N 00358 D 10pk 1 and open ended wrenches 1 8 ID silicone tubing P N 04029 X 50ft L1534 Revision B December 2004 16 Vela Ventilators Recommended Maintenance Schedules Schedules L1534 Every 500 hours the fan and ambient air filters should be cleaned and replaced if necessary Every 5000 hours VIASYS recommends that the following Preventive Maintenance procedure be performed see chapter 4 for instructions This procedure
40. cted Ambient air reading is too low The 100 cal A D reading is too low The A D readings never stabilized during a calibration 28 39 UNUSED UNUSED a a O MSP code ran away hit runaway trap CPU can t recover MSP addressed a nonresponsive memory device or a nonexistant memory device 7 10 11 12 3 17 18 19 20 21 22 24 25 26 27 MSP addressed a nonresponsive memory device or a nonexistant memory device 57 59 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 61 62 63 64 65 67 Revision B December 2004 1 1 0 Vela Ventilators IOP checksum 210 Three consecutive exhalation pressure mismatches 222 229 UNUSED IOCOMM No servo data for the DACs written to memory No MSP sync within 2sec of IOP post finished IOCOMM A D data not retrieved from memory 239 247 UNUSED IOCOMM IOP did not receive an MSP packet for over 100 ms Three consecutive internal reference voltage mismatches IOP discovered a fan failure IOP discovered a fan failure condition has ended Three consecutive IOP discovered DAC loop back failure IOP discovered power supply over temp IOP discovered DAC loop back is ok IOP discovered power supply is ok L1534 Revision B December 2004 Operators Manual Appendix D Event Codes 1 1 1 L1534 Revision B December 2004 Glossary L1534 Breath Interval Elapsed time from the start of one breath to the start of the next
41. customer service 100 D dampener gasket 39 DC power connector 26 DC voltage 96 differential pressure 17 disconnect the battery 23 display 71 drawings diagrams and schematics 16 E electronic 18 ESD susceptible electrical components 23 exhalation system 17 21 exhalation valve assembly 38 external battery 71 L1534 F filter check 57 filters 16 flow delivery system 21 Flow Delivery System 17 flow sensor PCB 37 G green oxygen nebulizer tube 32 H high and low pressure oxygen fittings 47 high pressure 7 high pressure limit 71 I inspiratory hold solenoid 39 inspiratory hold valve 18 inspiratory time 71 intake and output elbows 47 J J1 position on the main PCB 35 L leak test 58 left panel 28 light emitting diodes 20 liquid crystal display 19 M main controller system 20 maintenance schedules 16 manifold base assembly 40 December 2004 Service Manual 115 manometer 7 MAP 71 membrane key panels 18 membrane panel 20 monitor performance 71 monitored parameters 71 muffler output 50 N NIST 15 O 02 sensor 43 optical encoder 18 20 over pressure relief valve assembly 48 oxygen blending system 18 22 oxygen diffuser tube 41 P PCMCIA card 28 peak inspiratory pressure 71 PEEP 71 performance checklist 73 PIP 71 72 pneumatic system 17 power cabl
42. d with 0 50 psig regulator attached To Pressure Manometer 0 60 psia Figure 4 53 Calibration setup for Regulator Calibration 1 Enter the SVT mode as detailed in this procedure then press the MAIN icon From the CALIBRATION SELECT screen press the SOLENOID touch screen icon to enter the solenoid mode 2 Connect gas source to the high pressure port on the rear panel see figure 18 Using a 0 50 psig regulator apply 50 psig gas pressure In turn press the 02 0 02 1 and 02 2 solenoid touch screen icons 3 Using a calibrated manometer measure the pressure at the Nebulizer port on the front of the ventilator for each solenoid see figure 17 It must read 40 psig 1 Adjust the internal adjustment regulator to achieve the correct pressure at the Nebulizer port see figure 4 22 GC D High Pressure 3 02 Port 3 5 CH Figure 4 54 Vela Rear Panel 3 Perform the Operational Verification Procedure described in this chapter once the calibration is complete L1534 Revision B December 2004 84 Vela Ventilators Note All personnel performing preventive maintenance and product repair must be trained and certified by VIASYS Healthcare to service the product MICROCOMPUTER CONTROLLER EXHALATION PRESSURE TRANSDUCE TURBINE DIFFERENTIAL ON Lire FLOW 02 SENSOR eect DIFFERENTIAL EXMALATION TRANSDUCER VALVE MIXINGCHAMBER Kessen FILTER 1 LITER To PATIENT 02 INLET 40
43. e figure 3 6 3 Gently slide the card out of its socket Installation 1 Slide the card into the socket in the direction of the arrow printed on the card 2 Click card into place 3 Install the battery tray top cover and power cable Left Panel The left panel is structural only and has no components attached to it Removal 1 Remove the power cable top cover and battery tray 2 Remove the 2 Phillips countersink screws at the rear of the panel 3 Remove the 1 Phillips countersink screw in the upper front of the panel 4 Lift out the left panel Installation 1 Slide the front of the left panel behind the lip on the front panel and align the back of the panel with the rear panel edge Install the 2 Phillips countersink screws in the rear of the right panel Install the 1 Phillips countersink screw in the upper front of the right panel Install the battery tray top cover and power cable L1534 Revision B December 2004 Service Manual Disassembly amp Reassembly Procedures 29 Right Panel Containing the Power PCB P N 15894 Note The internal battery fuse is located on the power PCB Call Viasys if this fuse needs replacing Removal Remove the power cable top cover and battery tray Remove the 2 Phillips countersink screws from the right side of the rear panel Remove the 1 Phillips pan head screw in the lower center of the right panel 1 2 3 Remove the 1 Phillips countersink screw in
44. e guard 24 power fail check 71 power PCB 29 power system 20 power on problems 96 L1534 R rear panel 44 resistive touch screen overlay 18 right and left muffler filter assemblies 50 A safety check valve guard 42 safety system 18 service calls 99 sock filter input 50 SVGA output ribbon cable 25 switch check 56 T the main PCB 34 three o rings 41 three visible o rings 41 tidal volume 77 tools amp equipment 15 touch screen 20 transformer 96 turbine amp muffler assembly 47 turbine gas delivery system 17 turbine motor driver PCB 49 U UIM 18 19 umbrella valve 39 W watchdog timer 21 December 2004
45. e set and the ventilator hours of use Hour Meter can be viewed by pressing the Date Time screen icon TRANSDUCER RANSDUCER VERSION Ea DATA TESTS version DATE FI02 MON VENT EXIT CALIBRATION SETUP Figure 4 12 Press Date Time icon HOUR METER Month Figure 4 13 Date Time and Hour Meter screen To adjust the date and time select by pressing the touch screen directly over the control to be adjusted see figure 4 X HOUR METER Figure 4 14 Select the month control L1534 Revision B December 2004 66 Vela Ventilators Adjust by turning the Data Dial clockwise to increase or counter clockwise to decrease the value Figure 4 15 Data Dial FiO2 Calibration See the Calibration section of this Chapter Ventilator Setup To access the ventilator setup options press the Vent Setup screen icon EVENTS TRANSDUCER RANSDUCER VERSION DATE TIME DATA TESTS INFO Fi02 MON CALIBRATION Gr EXIT Figure 4 16 Press Vent Setup icon L1534 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 67 Vent Setup Off Disabled Disabled Disabled Feet Feet Altitude Spanish German French Italian EXIT Figure 4 17 Ventilator Setup Screen Low Min Volume Off There are two ranges possible for the Low Minute Volume Alarm They are OFF to 99 9 liters and 0 1 to 99 9 liters The Low Min Vol Off Disable Enable screen icon allows you to toggle between the two ranges Vent S
46. e to one of the transducers in the drop down menu Press EXIT to return to the Extended Functions screen For instructions on how to view this data as a displayed waveform see Chapter 5 Maintenance amp Troubleshooting Transducer Tests To access the transducer test screen press the Transducer Tests screen icon RANSDUCER TRANSDUCER VERSION any EVENT Kn en AS Ge DATE TIME Fi02 MON EXIT CALIBRATION em Figure 4 7 Press transducer tests icon The transducer tests screen appears with icons for the Turbine Differential Exhalation Differential and Circuit Pressure transducers TRANSDUCERTEST SELECT rina nie EXHL DIFF CIRC PRESS EXIT Figure 4 8 Transducer test screen Press the Turbine Differential TURB DIFF screen icon L1534 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 63 L1534 TRANSDUCER TEST SELECT A EXHL DIFF CIRC PRESS A Figure 4 9 Press TURB DIFF icon The following messages appear in sequence in the message area at the bottom left of the touch screen Turb Diff Pressure Xdcr Test Requested urb Diff Pressure Xdcr Test In Progess Ti ED eo CPE where XXX is the transducer reading within range r Wr EO CRT re where XXX is the transducer reading OUT of range o HE Press the Exhalation Differential Pressure EXHL DIFF screen icon The following messages appear in sequence in the message area at the bottom left of the touch screen x
47. e unit and the filter grid from the rear of the unit Disconnect the fan cable from J2 on the power PCB Installation 1 L1534 Place the fan filter inside the external fan cover Align with 4 attachment holes and hold it against the rear panel Hold the ESD shield to the inside of the rear panel with the copper contact strips touching the rear panel Place the fan onto the ESD shield with the label to the inside of the unit and the wire at the bottom Use a 5 16 nut driver to install the nuts from the inside and a short 2 Phillips screwdriver to install the 4 Phillips pan head machine screws onto the fan assembly from the outside Connect the fan cable to J2 on the power PCB Install the battery tray top cover and power cable Revision B December 2004 54 Vela Ventilators L1534 Revision B December 2004 Chapter 4 Operational Verification and Calibration Operational Verification Testing L1534 Prior to using the Vela ventilator on a new patient the following checks should be carried out to ensure optimum performance Verification testing should always be performed off patient WARNING Disconnect patient from the ventilator before performing verification testing Note All personne performing preventive maintenance and product repair must be trained and certified by VIASYS Healthcare to service the product Note If any portion of the following performance check fai
48. e ventilator still does not power up contact your Bird Products Certified Service Technician Check DC voltage at J3 Black is ground Red is 5 volts DC and Yellow is 14 7 to 20 DC If voltage is not present replace Power Supply PCB L1534 Revision B December 2004 Service Manual Chapter 5 Maintenance amp Troubleshooting 97 Reviewing the Transducer Waveforms To review the transducer waveforms set in Chapter 4 in normal operational mode press the touch screen immediately over the waveform heading display on the MAIN screen VOLUME A C Paw cmH 0 Figure 5 13 Select waveform displayed A scrolling drop down menu displays all the possible waveform choices To scroll through the choices use the Data Dial 1500 XF lpm 1000 100 0 1010 Figure 5 14 Drop down menu From the choices displayed select the transducer you wish to review in this case transducer 0 and press the Accept membrane button 1500 XF Ipm 1000 500 0 OO Figure 5 15 Selecting Xducr L1534 Revision B December 2004 98 Vela Ventilators The waveform immediately changes to display the signal associated with the selected transducer in this case it is Turbine Speed Paw cmH Figure 5 16 Turbine Speed waveform displayed L1534 Revision B December 2004 Appendix A Contact amp Ordering Information How to Call for Support To get help on performing any of the preventive maintenance routines
49. el is a 10 4 SVGA 800x600 pixel active matrix LCD The LCD is used to implement the graphical user interface GUI It provides all of the adjustable controls and alarms as well as displays waveforms loops digital monitors and alarm status in real time Revision B December 2004 20 Vela Ventilators Touch Screen The touch screen is a 10 4 analog resistive overlay on a piece of glass which is placed over an LCD screen The touch screen and the LCD together provide a set of software configurable soft keys The software enables the keys to be context sensitive The touch screen has a resolution of 1024x1024 Physically the touch screen consists of two opposing transparent resistive layers separated by insulating spacers Touching the screen brings the two opposing layers into electrical contact The Y coordinate is determined by applying a voltage from top to bottom on the top resistive layer This creates a voltage gradient across this layer The point of contact forms a voltage divider which is read by the analog to digital converter The X coordinate is determined by applying a voltage from left to right on the bottom resistive layer Again this creates a voltage gradient and the point of contact forms a divider which is read with an analog to digital converter Membrane Panel The membrane panel provides a set of permanent dedicated keys which enable control of ventilator functions The membrane panel also provides visual display
50. ely attached to the nipple on the exhalation valve assembly 2 Seat the valve onto the standoffs with the PCB towards the inside of the unit 3 Install the valve cover using 2 Phillips panhead screws 4 Connect the following to the FIO2 monitoring PCB J2 2 pin clear conn from oxygen sensor J3 2 pin blue conn from oxygen inlet solenoid on blender assembly J4 2 pin red conn from nebulizer solenoid assembly on upper rear of blender 5 Install the front panel left panel right panel battery tray top cover and power cable Revision B December 2004 Service Manual Disassembly amp Reassembly Procedures 39 Inspiratory Hold Solenoid and Check Valve Assembly P N 11382 Removal 1 Remove the power cable top cover battery tray and left panel 2 Ifthe front panel is installed disconnect the cable from J302 on the main PCB 3 Remove 2 Phillips pan head screws and lift out the solenoid 4 Lift out the spring and check valve assembly Figure 3 12 Inspiratory Hold Solenoid Installation Figure 3 13 Umbrella check valve P N 21950 Place the spring P N 21971 into the center of the check valve P N 21950 Slip the solenoid over the spring using the guide and seat into place Install 2 Phillips pan head screws If the front panel is installed connect the cable from J302 on the main PCB Install the left panel battery tray top cover and power cable DF Go b gt L1534 Revision B December 2004
51. ender assembly inside the unit Use needle nosed pliers to feed the oxygen diffuser tube through the hole in the rear panel and connect it to the blender nipple Install 3 Phillips pan head screws on the right side of the rear panel Install the bottom strip ambient air inlet filter Connect the following to the blender PCB 301 12 pin from J301 on the main PCB If the front panel is installed connect the green oxygen nebulizer tube If the rear panel is installed connect the 40 pin ribbon cable to the SVGA out PCB If the rear panel is installed install the high and low pressure oxygen fittings to the rear panel using a 3 4 wrench noting that the high pressure fitting is located above the low pressure fitting 10 Install the right panel battery tray top cover and power cable Revision B December 2004 52 Vela Ventilators BLENDER MODULE 15895 Nebulizer Solenoid 40 psig Adjustment Regulator Figure 3 26 Blender Assembly L1534 Revision B December 2004 Service Manual Disassembly amp Reassembly Procedures 53 Fan Assembly part number 15500 Fan EMI Shield Filter holder Filter Grid Figure 3 27 Fan Assembly blow out Removal 4 Remove the power cable top cover and battery tray Use a 5 16 nut driver to remove the inside nuts and a short 2 Phillips screwdriver to remove the 4 Phillips pan head outside screws on the fan assembly Remove the fan and ESD shield from the inside of th
52. essessesesessesesesnsees 29 Front Panel Part number 15869 ccscsssscscecssscseccssssserersesecoceereseecesesesasseceneasanseresteacoreceesaeseness 32 Parts List Front Panel Part Number 18860 33 Main PCB on Front Panel P N 52130 sssssssssssscssssssssssscsesssssssscecscenssssesececesscssssssecscesenssesesess 34 Flow Sensor PCB assembly P N 15991 ssccsssssssesesessscesessssessseessseceesessssesesessssessasesenensnsansesees 37 Exhalation Valve Assembly P N 15871 ssscssssssssssssssscessssesesecssssscsesestsnsecesesseseeesssasensnensansesess 38 Inspiratory Hold Solenoid and Check Valve Assembly P N 10346 sssssssscesestsssesessestsssesees 39 Manifold Base N EE 40 Oxygen Sensor part number 15972 csscsscsssssscscscssssesesecscscsssssssssscensssesssesesessssssssesececssesseasecssenes 43 Rear Panel part number 19892 eege EE ee 44 Turbine and Muffler ASSOCMDIY cscscsssssssssssssscssssssssecsssnssssesesssscssssssssscssenssscscecsssssssssesesessesses 47 Over Pressure Relief Valve assembly sssssssssesesestscecensestsssesssessesesesssseesnsnsssseseseseesseeassseeees 48 Turbine Motor Driver PCB part number 7887 seen 49 Muffler Filter Assemblies part number 10364 ccccccscseseseseseseseseseeescseecseececececesacasasaensasaessans 50 Removal anda anno tess tetas nissan ia oil 50 Blender Assembly Part Number 1589 ooococococoninnionnammrrrrrrrrrrras 51 Fan Assembly part number 15500 ocococicocococococonnnnnmmrrrrrrr
53. etup H Locks Fi02 Monitor EN Disabled Disabled Feet Feet Altitude EXIT Figure 4 18 Low Min Vol Off Enabled 11534 Revision B December 2004 68 Vela Ventilators Locks Disabled Toggles the control Locks on and off Vent Setup Fi02 Monitor EN Disabled Feet eet Altitude EXIT Figure 4 19 Locks Enable Disable Fi02 Monitor Disabled Disables or Enables the FiO2 Monitor Function Vent Setup Feet eet Altitude EXIT Figure 4 20 Monitor enable disable L1534 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 69 Altitude Adjustment Allows for adjustment of altitude in feet or meters above sea level Vent Setup eters Altitude EXIT Figure 4 21 Altitude feet meters The Altitude screen icon toggles between Feet and Meters and the selection is reflected in the control label see figure eters 4 22 Altitude Figure 4 22 Altutude in Meters To adjust the value select the control then adjust using the data dial Revision B December 2004 70 Vela Ventilators Language Selection A choice of 5 languages is available see figure 4 23 Select a language by pressing the appropriate screen icon Press EXIT to leave the Ventilator Setup screen and return to the Extended Functions screen Vent Setup Altitude Feet eet Altitude Figure 4 23 Exit Ventilator Setup Press EXIT again to exit the Special Functions menu TRANSDUCE
54. f towards the rear as shown in figure 5 1 Figure 5 1 Slide cover towards rear CAUTION The SVGA Output ribbon cable lies directly beneath the top cover assembly running from the front of the Vela to the rear It can be damaged if care is not taken when removing the cover Make sure that the cover clears this cable before sliding it back The card is located towards the front of the Vela beneath the right panel To replace the card refer to figure 5 2 and do the following Card eject button Figure 5 2 PCMCIA cards in place L1534 Revision B December 2004 90 Vela Ventilators Note If a new version of software is installed it can take up to two minutes for the software to download to the ventilator During this time the ventilator is inoperative and the audible alarm will sound The ventilator will resume normal operation once the download is complete 1 Press the protruding button beneath the card to eject 2 To install make sure the arrow on the card is pointing up then push the card into the applicable slot until it clicks into place WARNING It is essential when working inside the ventilator to protect against static discharge which can damage the ventilator and cause it to become inoperative ALWAYS take standard ESD precautions before removing the ventilator cover Replacing the external A C fuses L1534 Remove the power cord protective cover Unplug the A
55. from the patient s lungs during the exhalation phase of a breath This electromechanical subsystem is made up of an exhalation valve a flow transducer a differential pressure transducer an airway pressure transducer and three auto zero solenoid valves During exhalation the outflow of gases is regulated by the exhalation valve to achieve the set PEEP The exhalation valve is comprised of an electromagnetic linear actuator operating against a mechanical poppet seat The gas flow travels through the flow transducer The flow transducer is a variable orifice type and creates a differential pressure proportional to flow This differential pressure is transmitted to the differential pressure transducer which converts the pressure signal to an electrical signal The controller uses this signal for flow triggering and to monitor exhaled tidal volume The airway pressure transducer reads pressure in the exhalation leg of the patient circuit This signal is used as a feedback signal for controlling PEEP pressure control pressure support and various pressure monitors Periodically the auto zero valves activate to reference the differential and airway pressure transducers to ambient pressure The offset is recorded by the controller and is used as an offset for future pressure measurements This compensates for long term and temperature drift Materials exposed to patient gases include compatible plastics aluminum and stainless steel Revision B December
56. gend changes to read Apply 60 cmH20 Press Button and the status of the zero calibration line now reads OK with a recorded A D value 11534 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 79 TURB DIFF PRESS CALIB PRESSURE CANCEL APPLIED CALIBRATION Apply 60cmH20 Press Button Status Press A D Min Max Prev OK 0 0847 0731 0889 0846 Pending 60 1865 1981 1956 Figure 4 44 Turbine Pressure 60 cmH20 calibration screen 2 5 Attach the calibration setup shown in figure 1 available as a kit from VIASYS Healthcare to the port P2 on the turbine pressure transducer see figure 4 6 for location Turn the calibration syringe handle clockwise to generate positive pressure When the pressure manometer reads 60 cmH20 0 6 cm H20 press the PRESSURE APPLIED touch screen icon 8 The screen displays OK for both pressures and SAVE CALIBRATION and CANCEL CALIBRATION Press SAVE CALIBRATION to save and return to the transducer calibration selection screen TURB DIFF PRESS CALIB SAVE CANCEL CALIBRATION jCALIBRATION Status Press A D Min Max Prev OK 0 0847 0731 0889 0846 OK 60 1962 1865 1981 1956 Figure 4 45 Turbine Pressure 60 cmH20 calibration screen 3 9 Reconnect tubing to the port after calibration CAUTION Make sure that your pneumatic connection is to the Turbine Differential transducer before applying 60 cmH20 pressure If the 60 0 cmH20 pressure is in
57. h screen icon L1534 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 59 Extended Functions The Extended Functions menu may be accessed via the UVT Test Select screen as described in the previous section Press the EXTENDED FUNCTIONS icon from the UVT screen UVT TEST SELECT wm o Figure 4 3 Accessing the Extended Functions Screen from the UVT menu You can also access the extended functions screen via the Screens menu during normal operation Press the screen display area on the top center of the touch screen to activate Screen Select menu VOLUME A C A SCREEN SELECT Ei MANEUVER FUNCTIONS P Wie Peak How uc Pause Flow trig 0 xe oe Ka Figure 4 4 Accessing the Extended Functions screen from the Screen Select menu Press the EXTENDED FUNCTIONS touch screen icon to display the Extended Functions screen L1534 Revision B December 2004 60 Vela Ventilators TRANSDUCER TRANSDUCER VERSION ATE TIME EVENTS DATA TESTS INFO GE FiO2 MON VENT EXIT CALIBRATION SETUP Figure 4 1 Extended Functions screen menu Events To access the Events list press the Events screen icon TRANSDUCER TRANSDUCER VERSION ee DATA TESTS INFO ae VENT EXIT SETUP EMON ZIBRATION Figure 4 2 Press the Events touch screen icon A list of chronological events displays with the latest event at the top as shown in figure 4 11 EVENTS ER 105 75h 64 MSP vent powered up lt
58. he high pressure alarm should occur When this happens the ventilator should 6 Immediately cycle into the expiratory phase 7 Sound the audible alarm L1534 Revision B December 2004 72 Vela Ventilators 8 Display the HIGH PRES message in the alarm window ii Return the High Pressure Alarm setting to 5 cmH20 above PIP and press the Alarm Reset button to clear the alarm This completes the performance check The following Ventilator Performance Checklist may be used to document each Performance Check for your records L1534 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 73 Vela Ventilator Performance Checklist This checklist is for use during the Vela Operational Verification Procedure Serial Number Hours Date Verification Steps Verification Step Check amp Initial 1 Inspect the ventilator and components for appearance and cleanliness Confirm the Exhalation valve diaphragm and air intake filter and test lungs O are correctly installed Wipe the ventilator clean if needed using a cloth moistened with an approved cleaning solution 2 Enter the User Verification Test UVT Press the Patient Removed touch screen icon 3 Test the alarm volume Adjust as required 4 Confirm the proper functioning of the front panel lamps and LEDs E 5 Confirm the proper functioning of the membrane switches 6 Complete the internal
59. hl Diff Pressure Xdcr Test Requested xhi Diff Pressure Xdcr Test In Progess EO NESST where XXX is the transducer reading within range r i OO Celle where XXX is the transducer reading OUT of range wi O W ul Il Press the Circuit Pressure CIRC PRESS screen icon The following messages appear in sequence in the message area at the bottom left of the touch screen Circ Pressure Xdcr Test Requested Circ Pressure Xdcr Test In Progess where XXX is the transducer reading within range r where XXX is the transducer reading OUT of range O Revision B December 2004 64 Vela Ventilators Version Information To access the software version information screen press the VERSION INFO screen icon TRANSDUCER TRANSDUCER VERSIO f o DATA fransoucen nre eee Se Fi02 MON EC CALIBRATION SETUP Figure 4 10 Press the Version Info icon The Versions screen showing the versions of all software installed on the machine displays Note The version information shown in figure 4 X is an example only Your machine will have different versions of software depending on the date of sale and the updates loaded VERSIONS MSP V0 01 20 IOP V0 01 00 FPP V0 01 20 FPPBoot V00 01 20 TURB S N AC001449 Figure 4 11 Sample Version information screen L1534 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 65 Date amp Time The date and time can b
60. ications B the defective unit or part is returned to the Company transportation charges prepaid by Buyer C the defective unit or part is received by the Company for adjustment no later than four weeks following the last day of the warranty period and D the Company s examination of such unit or part shall disclose to its satisfaction that such defects or failures have not been caused by misuse neglect improper installation unauthorized repair alteration or accident Any authorization of the Company for repair or alteration by the Buyer must be in writing to prevent voiding the warranty In no event shall the Company be liable to the Buyer for loss of profits loss of use consequential damage or damages of any kind based upon a claim for breach of warranty other than the purchase price of any defective product covered hereunder The Company warranties as herein and above set forth shall not be enlarged diminished or affected by and no obligation or liability shall arise or grow out of the rendering of technical advice or service by the Company or its agents in connection with the Buyer s order of the products furnished hereunder Limitation of Liabilities L1534 This warranty does not cover normal maintenance such as cleaning adjustment or lubrication and updating of equipment parts This warranty shall be void and shall not apply if the equipment is used with accessories or parts not manufactured by the Company or authorized for u
61. in PCB oveftang S a A Turbine Exhalation ara JUD m Differential Flow gt 5 L d Transducer Transducer SC PRESSURE F E 5 MANOMETER a l l Je ch Je o GAS PRESSURE E f p2 EI O P2 P1 o o 2 O Exhalation Pressure AA O a Transducer 2 TT 7777777 Attach to the Ll transducer needing lt t P N 33903 calibration _ w Figure 4 37 Location of transducers A The ventilator performs its Power On Self Test When the self test is complete the screen displays flat waveforms and the ventilator makes no attempt to deliver a breath This indicates that you are in a Service mode The audible alarm should sound press the alarm reset button to silence alarm Press the MAIN icon at the top of the touch screen SVT TEST SELECT The SVT TEST SELECT screen displays Press CALIBRATION to access the CALIBRATION GE aay transducer calibration screen see figure 4 7 UVT EXTENDED FUNCTIONS FUNCTIONS Figure 4 38 SVT Test Select Screen L1534 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 77 CALIBRATION SELECT EXL PRESS TURB PRESS EXL FLOW XDCR XDCR XDCR ons EXIT Figure 4 39 Calibration selection screen Exhalation Pressure Transducer 1 Press the EXH PRESS XDCR touch screen icon from the CALIBRATION SEL
62. includes e Replacement of the fan filter the ambient air filter the cone filters in the high amp low pressure gas inlets and the turbine mufflers filter e Perform verification procedures described in Chapter 4 e Calibration of the transducers amp solenoids if necessary Every 10 000 hours or every two years whichever occurs sooner the internal oxygen sensor should be replaced Maintenance on the Vela should only be carried out by a trained and authorized service technician VIASYS Healthcare will make available to qualified technicians service manuals and such items as circuit diagrams component parts lists calibration instructions and other information to assist in repair of those parts of the ventilator designated by the manufacturer as repairable items The drawings diagrams and schematics included in this manual are for reference only and may be updated separately from this manual after publication For current revisions of all documentation contact VIASYS Healthcare Tech Support at the numbers provided in Appendix A Revision B December 2004 Chapter 2 Theory of Operation General Device Description The Vela Ventilator uses a revolutionary turbine gas delivery system with sophisticated microprocessor control Its Graphical User Interface provides support for pediatric to adult patients The Vela can deliver clinically advanced modes of ventilation like Pressure Support and can be powered with an internal battery or AC po
63. l 5032 IEC 60417 Symbol 01 14 IEC 30878 This symbol indicates the equipment is suitable for alternating current Symbol 5049 IEC 60417 This Symbol indicates the ON condition for a part of the equipment When pressed the ventilator will operate from the MAINS voltage if connected or internal or external batteries if the battery charge is within operating specifications Symbol 5007 IEC 60417 Symbol 01 01 IEC 60878 Indicates ON Power Symbol 5008 IEC 60417 Symbol 01 02 IEC 60878 Indicates OFF Power t o l gt et ACCEPT Symbol 0651 ISO 7000 Horizontal return with line feed Indicates ACCEPT entered values for a specific field O gt zZ CH m E Graphical Symbol in general use internationally for DO NOT This symbol indicates CANCEL Do not accept entered values The ventilator continues to operate at previous settings Symbol 5467 IEC 60417 Pressing the button with this symbol will FREEZE the current display oa Symbol 5569 IEC 60417 This symbol indicates a CONTROL LOCK L1534 Revision B December 2004 Vela Ventilators Source Compliance Meaning VIASYS Healthcare symbol This symbol represents a NEBULIZER Symbol 5319 IEC 60417 This symbol indicates ALARM SILENCE Symbol 5307 IEC 60417 This symbol indicates ALARM RESET O VIASYS Healthcare symbol Increase OXYGEN s
64. l E N VIASYS Healthcare symbol Indicates VARIABLE ORIFICE FLOW SENSOR Symbol 5031 IEC 60417 ba This symbol indicates DIRECT CURRENT DC d a Symbol 5546 IEC 60417 This symbol indicates the INTERNAL BATTERY STATUS display L O VIASYS Healthcare symbol This symbol indicates INSPIRATORY HOLD w t VIASYS Healthcare symbol This symbol indicates EXPIRATORY HOLD A VIASYS Healthcare symbol This symbol indicates MANUAL BREATH L1534 Revision B December 2004 Chapter 1 Introduction General Instructions When disassembling or assembling the Vela refer to the pneumatic schematic tubing diagram and the wiring diagram shown in Appendix B and the appropriate schematics and assembly drawings for each assembly The illustrations shown in this manual are for reference only current revisions of these diagrams and schematics are available to qualified personnel from VIASYS Healthcare Critical Care Division Technical Support Always take standard ESD precautions when working on Vela ventilator systems Ensure the ventilator is disconnected from the AC power supply before performing and repairs or maintenance When you remove any of the ventilator covers or panels immediately disconnect the internal battery quick release connector see figure 3 1 before working on the ventilator Recommended Tools amp Equipment Note Before using any test equipment electronic or pneumatic for calibration pro
65. l microcontroller which under software control performs several repetitive tasks such as generating the refresh signals for the display system cycling the A to D converters through a pattern of measurements from the multiple signal sources and scanning the control panel for pressed buttons Such repetitive tasks are thereby off loaded from the Main Processor Solenoid Valves and Valve Drivers including the Auto Zero valves are employed on the Circuit Pressure transducer and on the Turbine Differential Pressure Transducer These valves allow the controller software to compensate for long term drift and temperature induced zero shift in the pressure transducers by periodically rechecking the zero pressure readings Similar solenoid valves are employed in the Oxygen Blending System The valve drivers for the Auto Zero and Blender valves are similar The Main Processor is a 386 type CPU which controls all ventilator functions All user settings for alarms controls ventilation mode waveform and monitoried data are stored here and are combined with measured pressure flow and speed data to cause the ventilator to function The algorithms formulae and control functions which define ventilator behavior are contained in the software program executed by the CPU The Watchdog Timer and Hardware Fault Monitors shut down the ventilator if a malfunciton is detected The Watchdog Timer consists of two timers and a PAL containing a state machine The Mai
66. lowing to the main PCB J302 2 pin from inspiratory hold solenoid on manifold base J4 8 pin from J1 on the FIO2 monitoring PCB J301 12 pin from J301 on the blender PCB P N 15497 AL901 hard wired 2 prong from alarm cable connector J900 2 pin alarm loudness cable from alarm potentiometer Revision B December 2004 Service Manual Disassembly amp Reassembly Procedures 33 5 Connect the 1 16 silicone tubes to the common front ports of the turbine outlet auto zero solenoid from the main tubing harness the turbine inlet auto zero solenoid from the turbine and the airway pressure auto zero solenoid Nafian tube from the exhalation valve receptacle 6 Connect the 1 8 silicone tube 4 to P2 and 5 to P1 on the exhalation differential transducer and 1 to the turbine 7 Connect the following to the main PCB JP2 40 pin ribbon cable from JP1 on the SVGA out PCB Note Ensure that the fiber optic cable runs under the turbine muffler that the tubing runs over the nebulizer line and is not pinched in between the front and base panels and that the cable from J701 is securely connected to the turbine Parts List Front Panel Part Number 15869 Item 34 35 Part Number 21374 52130 53002 16206 52000 15532 15868 21368 80435 44027 71046 66100 52000 01177 56060 30011 52000 00475 53027 13802 20415 15991 15961 15962 15963 21560 53002 46204 10632 Part Description PANEL FRONT PCBA
67. ls and you are unable to correct the problem contact your VIASYS Healthcare Certified Service Technician First perform the User Verification Tests UVTs To access the UVTs do the following 1 After disconnecting the patient turn the ventilator OFF e STANDBY 2 Press and hold the Accept button 3 While holding the Accept button turn the ventilator ON Continue to hold the button until the ventilator completes the Power On Self Tests POST 4 Release the Accept button when the UVT menu appears in the screen The Audible Alarm sounds Press Alarm Reset button to clear UVT STARTUP ATTENTION REMOVE PATIENT BEFORE PROCEEDING PATIENT REMOVED Figure 4 1 UVT Startup Screen 5 Press the Patient Removed touch screen icon the UVT test selection screen displays see figure 4 2 Revision B December 2004 56 Vela Ventilators VOLUME A C 40 Paw cmH 2 Lamp Test switch Test Alarm Test Gin Leak Test EXTENDED FUNCTIONS Man Brth Silence LIMITS Effort Vol Min Figure 4 2 The UVT Screen with the Main screen in Service mode 6 Press the appropriate touch screen icon to begin a test Lamp Test Run this test to check the front lamps to make sure they are functioning properly 1 Press the LampTest touch screen icon to start the test The ventilator illuminates all front panel LEDs 2 Press the LampTest touch screen icon again to turn the LEDs off and exit the test Switch Test
68. n gt Carefully place the unit on its side and run the fiber optic cable under the muffler tubes Direct the blender nipple on the rear panel through the hole in the manifold base Install 3 Phillips pan head screws on the rear panel ensuring that the blender nipple is centered With the unit upright install the blender cable tie wrap to the turbine and install the two tie wraps that hold the main harness onto the tie mounts noting that the tie wraps are positioned where the wires all run parallel Connect the following to the turbine motor driver PCB P2 10 pin from main PCB and power PCB via main harness Install the left panel right panel battery tray top cover and power cable Revision B December 2004 Service Manual Disassembly amp Reassembly Procedures 45 jet e A et EH O REAR PANEL ASSY 15892 Rev X4 L1534 Revision B December 2004 46 Vela Ventilators a gt x lt gt w CC N md CO un Se SECTION AA KR UI Figure 3 17 Rear Panel views L1534 Revision B December 2004 Service Manual Disassembly amp Reassembly Procedures 47 Turbine and Muffler Assembly Removal 1 L1534 Remove the power cable top cover battery tray right panel left panel and blender If the front panel is installed disconnect the cable from J701 on the main PCB disconnect the green oxygen nebulizer tube and disconnect the blender
69. n B December 2004 Service Manual Theory of Operation 1 9 L1534 O gt LCD amp TOUCHSCREEN 1 amp 2 5 MEMBRANE PANEL WITH EMBEDDED LED S BACK LIGHT AC VOLTAGE TOUCH DIGITAL SCREEN BACK LIGHT INVERTER A DIGITAL CONTROL PCB 7 UNIVERSAL SERIAL BUS FUTURE PRINTER y RS232 y RS232 RS232 MIB GE gt 5V PRN PORT MIB gt gt 3 3V DIG LOGIC CRT gt 24VDC HIGH SPEED SERIAL Figure 1 User Interface Design Module Block Diagram The UIM performs all ventilator control functions gas calculations monitoring and user interface functions The UIM uses a Graphical User Interface GUI via the active matrix SVGA LCD and resistive touch screen to provide system and patient information to the user and to allow the user to modify ventilator settings The Monitor MCU handles all user interface requirements including updating the active matrix liquid crystal display LCD monitoring the membrane keypad analog resistive touch screen and optical encoder for activity The Monitor MCU also performs all the input output functions of the UIM including RS 232 printer video output and IEEE 1073 Medical Information Bus MIB Communication between the Control and Monitor MCU s is accomplished via an 8 bit dual port SRAM Liquid Crystal Display The liquid crystal display LCD provides graphical and digital feedback to the clinician The pan
70. n Controller CPU must communicate with a state machine at intervals within a time window set by the two timers The CPU must obtain a key from the PAL and send the correct address and data response back to the state machine at each interval If the response is incorrect or comes at an invalid time the Watchdog shuts down the CPU and forces the ventilator hardware to a safe state The Hardware Fault Monitors check the status of the power supplies to the ventilator electornics If any is out of the safe operationg range the ventilator will shut down and cannot be made to operate until the fault is corrected Exhalation System The electrical portion of the exhalation system is comprised of the Exhalation Valve Driver Circuitry The driver converts the low voltage signal output by a D to A converter into a controlled constant current which energizes the linear solenoid positioner in the exhalation valve Flow Delivery System L1534 The electrical portion of the flow delivery system is comprised of a 3 Phase Brushless Motor Driver and an Optical Speed Transducer The 3 Phase Brushless DC Motor Driver converts the low voltage signal output by a D to A converter into three controlled currents which energize the three motor phases and cause the motor to create a torque resulting in motor rotation The torque generated is a function of current and therefore of the control voltage from the D to A converter The speed of rotation is monitored by the op
71. nect the white Molex DC power connector 2 Ensure the Molex connector is pushed down into the unit behind the muffler tubes and install the battery tray The tray is correctly installed when the wires run towards the rear of the unit 3 Secure the battery tray to the left amp right panels with 4 Phillips pan head screws 4 Install the top cover and re connect the power cable and the power cable guard Battery Tray Parts List Item Part number Description Qty UM 1 21363 Tray battery 1 Ea 2 52000 00190 Grommet 11 16 id 0 Ea 3 21543 Battery 12v 2 7 Ahr ni mh 4 Ea 4 15719 Cable assy battery tray 1 Ea 5 20742 Bracket capacitor 2 Ea 6 21068 Foam pad capacitor bracket 2 Ea 7 64084 Capacitor elect 0 1f 63vdc 1 Ea 8 04383 Washer lock int 6 4 Ea 9 07212 Nut 6 32 x 093 depth 8 Ea 10 05038 Tie strap 4 Ea 11 08231 Mounting bracket cable tie 2 Ea 12 07803 Cable tie 2 Ea 14 09349x Tape adh 2s 2 x 045 0 Ft Revision B December 2004 Service Manual Disassembly amp Reassembly Procedures 27 L1534 BATTERY TRAY ASSY 10633 Figure 3 5 Battery Tray and large capacitor assembly Revision B DETAIL A December 2004 28 Vela Ventilators PCMCIA Cards The PCMCIA card is located inside the unit It contains the Vela software Card release button Figure 3 6 PCMCIA Card in place Removal 1 Remove the power cable top cover and battery tray 2 Push in the button under the card to release se
72. nsasssssnssneaecseseenenesesesenesensnensees 15 Recommended Maintenance SCHEQUIOS s csscssssesscseesssssececessssesessssseseessstssnsecesessseseeasaseeeees 16 SE 16 Chapter 2 Theory of Operation ccsssssscsseescesssessessesssseecseeseesiseesseeeseenseeeeennaes 17 General Device DESCAPUON ici iaa ai 17 Pneumatic System OVerView sssscssscscsssssssssscscsssssssssesscsessssssssssssesssssscscecessnsesssesesssecsssssessecssees 17 A deta taut ce 17 Exhalation System EE 17 FENES EE 18 Inspiratory Hold Valve n EE 18 Oxygen Blending A ate 18 Electroni A EE ee 18 L1534 Revision B December 2004 Service Manual 5 User interface module UIM kates EE hele ees iis Bade ee inate E 18 Power Systeme EE 20 WK WEE 20 The Watchdog Timer and Hardware Eelsten enger eisene 21 Exhalation Mii A Gla ea ee 21 Flow Delivery SYM SEET ESA GEES EN Oxygen Blending STO 0 A ee Ee ER Chapter 3 Disassembly amp ASSOMDIy csssssssecsescesssessssssseeseesseesineseeseseseeeeneesanes 23 General Instructions and WarningS s ssssssssssscecesesssssesesessncesesssscsnsssseseesessnsesesesssansecesesssnees 23 REOQUIFSO BT 24 Disassembly and Reassembly ProCedureS cocococococncnonnmmrrrrrrrraros 24 Power Cable ss tee a bet a a E aa a a a 24 Top Cover Part number 15802 25 Battery Tray P rt Number 1063 eege O de a N a 26 PCMCIA A ae a a a ae aiae 28 EE eer 28 Right Panel Containing the Power PCB P N 15894 ssssssssssscessssssesesessesese
73. o not block or restrict the Oxygen bleed port located on the instrument back panel Equipment malfunction may result Electric shock hazard Do not remove any of the ventilator covers or panels Refer all servicing to an authorized VIASYS Healthcare service technician A protective ground connection by way of the grounding conductor in the power cord is essential for safe operation Upon loss of protective ground all conductive parts including knobs and controls that may appear to be insulated can render an electric shock To avoid electrical shock plug the power cord into a properly wired receptacle use only the power cord supplied with the ventilator and make sure the power cord is in good condition The following cautions apply any time you work with the ventilator When replacing fuses ensure that new fuses are of the same type and value as those being replaced Incorrect fuses can cause damage to the ventilator A battery that is fully drained i e void of any charge may cause damage to the ventilator and should be replaced All accessory equipment that is connected to the ventilator must comply with CSA IEC601 UL2601 To avoid damage to the equipment clean the air filter regularly The following cautions apply when cleaning the ventilator or when sterilizing ventilator accessories L1534 Do not sterilize the ventilator The internal components are not compatible with sterilization techniques Do not gas sterilize or
74. off the PCB Note Do not remove the turbine from the turbine muffler assembly They are supplied complete Installation 1 Position the turbine motor driver PCB on the right side of the turbine assembly on top of the filter holder with the board toward the turbine Install 2 keps screws Connect the following to the turbine motor driver PCB P1 8 pin from the turbine P2 10 pin from J6 on the power PCB 4 Install the right panel battery tray top cover and power cable Revision B December 2004 50 Vela Ventilators Muffler Filter Assemblies part number 10364 Removal 1 Remove the power cable top cover battery tray and left panel 2 Remove 6 Phillips pan head screws on the filter cover Figure 3 21 fr ES 8 3 Remove the cover and the two o rings P N e N ES 30020 gt E AY S O rings P N 30020 Figure 3 22 4 Use needle nosed pliers to pull out both the left and right filter assemblies The right assembly has the filter sock Figure 3 23 Installation 1 Insert the muffler output into the left tube see picture and the sock filter input into the right tube The right and left muffler filter assemblies are sold together as part number 10365 2 Install two o rings P N 30020 3 Install the cover using 6 Phillips pan head screws 4 Install the left panel battery tray top cover and power cable Figure 3 24 L1534 Revision B December 2004 Ser
75. omplete disassembly of the unit follow all of the steps in each removal section in the order presented in this chapter To reassemble the unit follow all of the steps in each installation section starting with the last component and finishing with the power cable installation instructions Power Cable Figure 3 2 Power Cable Connector with Guard Removal 1 Remove the 2 Phillips pan head screws in the top portion of the power cable guard at the rear of the unit see figure 3 2 2 Remove the guard and unplug the power cable Installation 1 Plug the power cable into the rear of the unit 2 Install the power cable guard with the 2 Phillips pan head screws in the top portion L1534 Revision B December 2004 Service Manual Disassembly amp Reassembly Procedures 25 Top Cover Part number 15893 Removal 1 Remove the power cable 2 Remove the 3 Phillips pan head screws in the upper rear of the front panel if present 3 Remove the 4 Phillips pan head screws in the back panel 4 Remove the 3 screws from the bottom of each side of the ventilator if present Note The configuration of the screws securing the cover will depend on the model of Vela that you are working with 5 When all screws have been removed slide the top cover towards the rear of the unit and lift off CAUTION The SVGA output ribbon cable lies directly beneath the top cover assembly running from the front of the Vela to the re
76. operate the ventilator without fully understanding its features and functions may result in unsafe operating conditions Warnings and Cautions which are general to the use of the ventilator under all circumstances are included in this section Some Warnings and Cautions are also inserted within the manual where they are most meaningful Notes are also located throughout the manual to provide additional information related to specific features If you have a question regarding the installation set up operation or maintenance of the ventilator contact VASYS Healthcare Customer Care as shown in Appendix A Contact amp Ordering Information Terms WARNINGS identify conditions or practices that could result in serious adverse reactions or potential safety hazards CAUTIONS identify conditions or practices that could result in damage to the ventilator or other equipment NOTES identify supplemental information to help you better understand how the ventilator Warnings works Warnings and Cautions appear throughout this manual where they are relevant The Warnings and Cautions listed here apply generally any time you operate the ventilator L1534 The Vela Ventilator is intended for use by a trained practitioner under the direction of a qualified physician When the ventilator is connected to a patient a trained health care professional should be in attendance at all times to react to an alarm or other indications of a problem
77. ositive pressure 7 When the pressure manometer reads 3 cmH20 0 6 cm H20 press the PRESSURE APPLIED touch screen icon 8 When the calibration is complete the status of the zero pressure line reads OK and an A D value is recorded The screen displays SAVE CALIBRATION and CANCEL CALIBRATION Press SAVE CALIBRATION to save and return to the transducer calibration selection screen L1534 Revision B December 2004 Service Manual Chapter 4 Operational Testing and Calibration 81 EXHL DIFF PRESS CALIB SAVE CANCEL CALIBRATION CALIBRATION Status Press A D Min Max Prev OK 0 1810 0714 0906 0816 OK 3 2370 2260 2428 2362 Figure 4 48 Exhalation Differential Pressure Flow screen 3 9 Remove calibration setup from exhalation differential pressure flow transducer port and reconnect tubing before continuing Oxygen Pressure Transducer Calibration 1 From the CALIBRATION SELECT screen press 02 PRESS The Oxygen Pressure Transducer Calibration screen 1 appears O2 PRESS CALIB PRESSURE CANCEL APPLIED CALIBRATION Apply OPSI Press Button Status Press A D Min Max Prev Pending 0 0224 0592 0404 Pending 50 1219 2085 1781 Figure 4 49 O2 Pressure calibration screen 1 2 With no tubing attached to the Vela press the PRESSURE APPLIED touch screen icon for zero calibration 4 When the calibration is complete the status of the zero pressure line reads OK and an A D value is recorded see figure
78. otation of the turbine inlet filter to make sure that the seam is horizontally oriented and run the test again If the test fails again contact a Bird Certified Service Technician Leak Test Note This test should be performed with all circuit accessories installed e g humidifier water traps and so on Make sure al connections are secure and all openings occluded before beginning the test Run this test to make sure the patient breathing circuit is not leaking 1 Attach a one liter test lung P N 33754 at the patient breathing circuit wye 2 Press the Leak Test touch screen icon to run the test The test begins by increasing the pressure in the patient breathing circuit to 60 cmH20 The ventilator then displays the following messages in sequence Leak test requested Leak test in progress 3 The ventilator then waits 10 seconds and measures the circuit pressure again If the difference between the starting and ending measurements is less than or equal to 6 cmH20 the test passes and the ventilator displays the following message xxx Passed where xx x is the ending measurement 4 Otherwise if the difference is more than 6 cmH20 the test fails and the ventilator displays the following message XX X Failed If the test fails check all connections to make sure there are no leaks and repeat the test It the test fails again refer to Chapter 5 for troubleshooting procedures Exit To exit the UVTs press the EXIT touc
79. res 53 Chapter 4 Operational Verification and Calibration cccocicicionnonmmmm 55 L1534 Revision B December 2004 6 Vela Ventilators Operational Verification TesSting ocooonmmmmommmmmmmmmmmmmmmmmmmm 55 Limp Tetu id 56 MC TO E E eher ee dee EE 56 Alar Tetu cities EE 57 El EE E Ee 57 Leak TeSt NR 58 dy EA 58 Extended Functions aa aia 59 SC DU IEN ele EE 61 Transducer Tests EE 62 Version Information vic aria aiii iia deidades 64 Date IMA A A E A A is 65 RI el e EE 66 EE Lee E 66 Low Min Volume Dri a atelier dieser 67 Locks Disabled E 68 HOZ Monitor Disabled sisene steerer a E cd 68 Altitude Adjustment siiicar ais 69 Language Selection EE 70 Verification tests aria a a A a AAA iii 71 Vela Ventilator Performance Checklist sssssssssssssesesssecesssssssessssssssssscsesesesesesccaeececessssesessssasaes 73 GND A A A aa itira 75 TESTES Pies esate eege Eeer RA conten do EEE a e Zu 75 Power Up Verification Service Verification Tess 75 Exhalation Pressure Transducer cccccssscecssesesececescsesceceeeseeeseeesesesnsnsaeanensnssaeacaceceeeeeseesessennensnsnsneaeass 77 Turbine Pressure JESS egene Aerer EEN ARENS ESA Eed 78 Exhalation Flow Transducer Calibration cccesscecsssssscscceseeeseeeesesesnsneaceceeeceeeeeeseeesssensnsnsnsnssesenensneaeass 80 Oxygen Pressure Transducer Calibration curando 81 Regulalor cal 83 Oxygen Sensor Calibration iia 86 Chapter 5 Maintenance A Troubleshooting
80. s source and also recharges the internal battery When AC line power is not available the power system draws energy from the internal battery The power system uses energy efficient DC to DC converter technology to convert energy from the AC line or battery to appropriate voltages and currents to supply power to ventilator components and systems Main Controller System The Main Controller System is comprised of three Pressure Transducers an Analog to Digital Converter two Digital to Analog Converters the Input Output Processor Solenoid Valves and the Watchdog and Hardware Fault Monitors L1534 Revision B December 2004 Service Manual Theory of Operation 21 One of the pressure transducers measures the patient circuit pressure This pressure is an input to the controller A differential pressure transducer measures the pressure across the turbine This pressure is also an input to the controller A second differential pressure transducer is used to measure the flow at the outlet of the exhalation valve This pressure is also an input to the controller Analog to digital converters are used to change the analog pressure signals into measured binary numeric values for use by the microprocessor in the controller Digital to Analog converters are used to change the binary numeric commands generated by the microprocessor in the controller into analog signals which drive the turbine and exhalation valve The Input Output Processor is a smal
81. se in writing by the Company or if the equipment is not maintained in accordance with the prescribed schedule of maintenance The warranty stated above shall extend for a period of FIVE 5 years from date of shipment or 40 000 hours of use whichever occurs first with the following exceptions 1 Components for monitoring of physical variables such as temperature pressure or flow are warranted for ninety 90 days from date of receipt 2 Elastomeric components and other parts or components subject to deterioration over which the Company has no control are warranted for sixty 60 days from date of receipt 3 Internal batteries are warranted for ninety 90 days from the date of receipt The foregoing is in lieu of any warranty expressed or implied including without limitation any warranty of merchantability except as to title and can be amended only in writing by a duly authorized representative of the Company Revision B December 2004 4 Vela Ventilators Contents Revision HIStory E 2 A T 3 hitano VC 3 ke H GOEN 9 Trademark le AAA A q E e a 9 EMC d 9 MRE E 10 Intended Use EE 10 SA e een ee an acetal 10 TEA A A da ci 10 Declaration of Conformity Notice cocooonmmmnmmmmmmmrrrrrrrns 10 A sas aa aea aaraa aa e aE a aa 11 y A O EE REE 11 Warnings 5 AAA A A teehee a 11 TER 12 A a a a 13 Chapter 1 Introducir ai a 15 EIERE EE 15 Recommended Tools amp EQuipmenit ssssscsccccssscssescscscecscscecscececes
82. steam autoclave tubing adapters or connectors in place The tubing will over time take the shape of the adapter causing poor connection and possible leaks DO NOT submerge the ventilator or pour cleaning liquids over or into the ventilator Revision B December 2004 Service Manual Front Matter Equipment Symbols The following symbols may be referenced on the ventilator or in accompanying documentation Symbol Source Compliance Meaning Symbol 03 02 IEC 60878 Indicates ATTENTION consult ACCOMPANYING DOCUMENTS Symbol 5016 IEC 60417 This symbol indicates a FUSE Symbol 5034 IEC 60417 Symbol 01 36 IEC 60878 This symbol indicates INPUT Symbol 5035 IEC 60417 Symbol 01 37 IEC 60878 This symbol indicates OUTPUT Symbol 5019 IEC 60417 Symbol 01 20 IEC 60878 This symbol indicates protective EARTH ground Symbol 5021 IEC 60417 Symbol 01 24 IEC 60878 This symbol indicates the EQUIPOTENTIAL connection used to connect various parts of the equipment or of a system to the same potential not necessarily being the earth ground potential e g for local bonding Symbol 5333 IEC 60417 Symbol 02 03 IEC 60878 This symbol indicates TYPE BH equipment which indicates equipment that provides a particular degree of protection against electric shock particularly with regards to allowable leakage current and reliability of the protective earth connection Symbo
83. t it and the attached large capacitor assembly out Lean the battery tray and capacitor assembly against the left side of the Vela while you disconnect the large white Molex DC power connector Set the complete assembly aside Note When the batteries are disconnected the system will automatically re set the battery status memory and will initiate an 18 hour re charge cycle upon re connect During this period the red DC status light will remain on If the DC status light remains lit after the initial charging period has expired contact VIASYS tech support as described in Appendix A for a replacement battery Remove the right panel There are two screws in the rear of the ventilator one in the front top and one on the lower left side in the center Pull the panel out from the rear first then ease to the back amp tilt out Lay the assembly flat The Mufflers are now accessible L1534 Revision B December 2004 94 Vela Ventilators Replacing the muffler filter assemblies Silicone Elbow To remove amp replace the mufflers and filter first ease out the two silicone elbows from the muffler assembly front panel Loosen the 6 screws on the front plate amp remove the front plate Remove and replace the two black o rings on the front panel Using needle nose pliers firmly grasp the metal grid inside the R side muffler filter assy Pull firmly towards you and the muffler filter should slide out Repeat with the lef
84. t side muffler You will see that only the Right side muffler has a filter attached 4 the L side has wire muffler only L1534 Revision B December 2004 Service Manual Chapter 5 Maintenance amp Troubleshooting 95 Replacing the left panel w power PCB L1534 To install the new filter muffler assemblies push the left side muffler with no filter firmly in and make sure it is pushed all the way into the housing Insert the right side muffler with the filter ensure that the seam on the filter lays horizontally and press home Replace the front cover with the new O rings and reattach with six screws Install the two silicone elbows into the muffler cover and push in the center to make sure they are seated 1 Lean the right panel up to the Vela slide in the front then push in the rear Reattach the screws on the rear 2 front 1 and at the lower edge of the right side 1 2 To install the battery tray re attach the large white Molex connector and make sure it lays between the muffler elbows as you replace the battery tray onto the Vela This will ensure that there is enough space for the large capacitor attached to the Battery tray Re attach the 4 screws holding the battery tray in place Reconnect the ribbon cable 3 Slide the cover in place from the rear and push the top front edge home under the lip Attach the Screws 4 Reattach the power cord and re attach the power cord guard with the two screws
85. tallation 1 Ensure the o ring is installed into the oxygen senor 2 With the unit on its side place the sensor into the manifold and install the 1 mounting nut 3 Install the bottom panel left panel battery tray top cover and power cable For later model Vela units usually 1400 series or later do the following Removal On the bottom rear of the Vela unscrew the EMI shield containing the foam ambient air filter and lift out the shield and filter together The O2 sensor is visible on the left Using needle nose pliers disconnect the O2 filter connector Pull firmly straight back on the O2 sensor to remove Installation Seat the new O2 filter and re connect Replace the EMI shield containing the foam ambient air filter and re attach the screws securing it in place L1534 Revision B December 2004 A4 Vela Ventilators Rear Panel part number 15892 L1534 Removal 1 Remove the power cable top cover battery tray right panel and left panel 2 With the unit upright disconnect the following from the turbine motor driver PCB NOs P2 10 pin to main PCB and power PCB via main harness Cut the two tie wraps that hold the main harness and the tie wrap that holds the blender cable to the turbine Turn the unit on its side Remove 3 Phillips pan head screws on the rear panel Slide the fiber optic cable from under the turbine muffler assembly Remove the rear panel from the manifold base Installation Fo
86. ter Oxygen is supplied to the accumulator through the solenoids and orifices The controller opens and closes the valves as required to supply the correct amount of oxygen to satisfy the O2 setting and the flow demand The signal from the O2 inlet pressure transducer is used to compensated delivered O2 for O2 inlet pressure variations Surfaces exposed to patient gas are constructed from compatible plastics plated steel and aluminum There is also an optional oxygen inlet port which allows for low flow titration of oxygen into the gas output of this device Electronic Overview The Vela ventilator electronic system is comprised of several subsystems each containing numerous components These subsystems are the GUI System the Power System the Main Controller System and the Exhalation and Flow Delivery systems Individual subsystems are discussed in detail User interface module UIM L1534 The UIM consists of a 10 4 inch 800x600 active matrix LCD with an analog resistive touch screen overlay a back light inverter a set of membrane key panels an optical encoder and a Control PCB Software and the touch screen provide a set of context sensitive soft keys The membrane panel provides a set of hard permanent keys for dedicated functions Selecting the function with a soft key and adjusting the setting using the optical encoder changes a parameter The parameter is accepted or canceled by pressing the appropriate membrane key Revisio
87. the Delrin ring and push gently until you are sure it has seated correctly Replace the fitting and tighten down with the inch wrench Replacing the filter retaining ring and check valve on the hi pressure fitting Using a inch open ended wrench unscrew the two piece high pressure oxygen fitting Remove the white cone filter the white Delrin washer amp the black duck billed check valve as described above Figure 5 9 Unscrew the high pressure O2 fitting Install the black check valve and make sure it is seated Install the white Delrin washer with the lip down as shown in figure 5 10 Place the cone filter on the delrin washer and push gently to seat Replace and tighten down the fitting with a inch open ended wrench Figure 5 10 Installing the Delrin Washer L1534 Revision B December 2004 Service Manual Chapter 5 Maintenance amp Troubleshooting 93 Replacing the muffler and muffler filter assemblies Note Always take precautions against static discharge when working with the ventilator Retain all hardware for re assembly From the back panel remove the power cord guard by unscrewing the two retaining screws as shown in figure 5 11 Unplug the power cord Figure 5 11 Removing the power cord guard Unscrew the screws holding on the Vela cover Slide cover towards the rear of the machine and off Figure 5 12 Slide cover off towards the rear Remove the 4 screws securing the battery tray amp lif
88. the front panel at the lower left and right Disconnect the 1 8 silicone tube 4 from P2 and 5 from P1 on the exhalation differential transducer and 1 from the turbine 6 Disconnect the 1 16 silicone tubes from the common front ports of the turbine outlet auto zero solenoid to the main tubing harness the turbine inlet auto zero solenoid to the turbine and the airway pressure auto zero solenoid Nafian tube to the exhalation valve receptacle 7 Disconnect the following from the main PCB J4 8 pin to J1 on the FIO2 monitoring PCB J900 2 pin alarm loudness to alarm potentiometer J701 5 pin to turbine optic encoder and thermistor J401 4 pin to exhalation valve U719 fiberoptic to rear panel connector J5 14 pin to J5 on power PCB J302 2 pin to inspiratory hold solenoid on manifold base J2 26 pin to J1 on power PCB P N 15494 J905 3 pin to J2 on remote alarm nurse call PCB AL901 hard wired 2 prong to alarm cable connector Installation Connect the green oxygen nebulizer tube 2 Connect the following to the main PCB J401 4 pin from exhalation valve J701 5 pin from turbine optic encoder and thermistor U719 fiberoptic from rear panel connector J5 14 pin from J5 on power PCB J2 26 pin from J1 on power PCB P N 15494 J905 3 pin from J2 on remote alarm nurse call PCB 3 Slide the front panel into place and secure the 2 Phillips panhead screws behind the front panel at the lower left and right 4 Connect the fol
89. tical Speed Transducer The transducer outputs a train of pulses with a frequency proportional to the rotational speed of the motor This pulse train is a control feedback input to the controller Revision B December 2004 22 Vela Ventilators Oxygen Blending System The electrical portion of the optional oxygen blending system is made up of a safety solenoid a pressure regulator set to 40 PSI an O2 Inlet Transducer five Solenoid Valves one Nebulizer solenoid and the driver circuitry for the solenoid valves The Oxygen Inlet Pressure Transducer measures the incoming gas pressure so that O2 delivery can be compensated for inlet pressure fluctuations The Solenoid Valves are energized and deenergized under software control by the Main controller to supply the correct amount of oxygen to satisfy the current O2 setting and current gas flow demand The driver circuitry translates the binary logic signals presented by the controller to larger voltage and currents suitable for energizing the Solenoid Valves L1534 Revision B December 2004 Chapter 3 Disassembly amp Assembly General Instructions and Warnings L1534 When performing the procedures in this chapter refer to the Vela wiring and tubing diagrams Reference copies of these are located in Appendix B of this manual Ensure that you follow these safety warnings and precautions Figure 3 1 Battery Disconnect Molex Connector WARNING Always disconnect the main
90. ured value displayed in the screen 02 Oxygen Patient Breathing Circuit The tubing that provides the ventilatory interface between the patient and ventilator Paw Airway Pressure Measured in cmH20 at the exhalation valve Revision B December 2004 Service Manual 113 L1534 PEEP See Positive End Expiratory Pressure PIP Peak Inspiratory Pressure Shows the highest circuit pressure to occur during inspiration as measured at the exhalation valve The display is updated at the end of inspiration PIP is not updated for spontaneous breaths Pplat Plateau Pressure Measured during an Inspiratory Hold maneuver Used to calculate Static Compliance Cst PSIG Pounds per square inch gauge 1 PSIG 07bar Sigh Breath A Volume Controlled machine breath having a tidal volume equal to one and a half times 150 of the current tidal volume setting User Verification Tests UVT A group of tests to check ventilator performance prior to connecting the ventilator to a patient WOB Patient Work of Breathing i e a measure of Patient Effort Revision B December 2004 114 Vela Ventilators Index A AC power 71 active matrix LCD 18 alarm window 71 72 alarms check 71 B back light inverter 18 20 battery status 23 battery tray 26 breath rate 7 breathing circuit 58 C calibration curves 15 complete disassembly of the unit 24
91. vice Manual Disassembly amp Reassembly Procedures 51 Blender Assembly Part Number 15895 Removal L1534 1 2 Remove the power cable top cover battery tray and right panel If the rear panel is installed remove the high and low pressure oxygen fittings from the rear panel using a 3 4 wrench noting that the high pressure fitting is located above the low pressure fitting If the rear panel is installed disconnect the 40 pin ribbon cable from the SVGA out PCB If the front panel is installed disconnect the green oxygen nebulizer tube Disconnect the following from the blender PCB J301 12 pin connector to J301 on the main PCB Remove the bottom strip ambient air inlet filter by pinching and pulling it out Figure 3 25 Ambient air filter Remove 3 Phillips pan head screws on the right side of the rear panel Use needle nosed pliers to disconnect the oxygen diffuser tube as you remove the blender assembly If the exhalation valve assembly is installed disconnect the following from the FIO2 PCB J3 2 pin blue conn to oxygen inlet solenoid on blender assembly J4 2 pin red conn to nebulizer solenoid assembly on upper rear of blender Installation E If the exhalation valve assembly is installed connect the following to the FIO2 PCB J3 2 pin blue conn from oxygen inlet solenoid on blender assembly J4 2 pin red conn from nebulizer solenoid assembly on upper rear of blender Position the bl
92. wer for an more extensive patient range Pneumatic System Overview The Vela ventilator pneumatic system is electromechanical and is comprised of four major subsystems each containing several components These systems are the flow delivery system the exhalation system the safety system and the inspiratory hold valve Individual subsystems are discussed in detail below Flow Delivery System This electromechanical system controls all inspiratory flow to the patient The system delivers flow to satisfy criteria for many breath types including volume controlled pressure controlled and pressure supported The system comprises a turbine differential pressure transducer 2 auto zero valves and an optical encoder speed transducer When a breath is initiated the controller controls the speed of the turbine to achieve the required flow rate The speed and differential pressure transducer signals function as control inputs to ensure that the proper flow rate is delivered even when backpressure varies Periodically the auto zero valves activate to reference both sides of the differential pressure transducer to ambient pressure The offset is recorded by the controller and is used as a correction for future pressure measurements This compensates for long term and temperature drift Materials exposed to patient gases include compatible plastics aluminum and plated steel Exhalation System L1534 The exhalation system controls the flow of gas
93. y foam ambient air filter Replacing the fan filter Pop out the fan filter retaining grid using screwdriver Pinch amp pull out the foam filter see figure 5 7 To install a new filter carefully place the new filter over the fan housing and place the retaining grid back onto the fan housing Check to make sure there are no creases or folds in the foam filter as this will reduce its efficiency and could allow contaminants into the ventilator body Push the retaining grid until all four tabs click into place Figure 5 7 Pinch and remove foam fan filter L1534 Revision B December 2004 92 Vela Ventilators Replacing the filter retaining ring amp check valve on the low pres 02 fitting Using a inch open ended wrench unscrew the low pressure oxygen fitting from the back panel as shown in figure 5 8 Figure 5 8 Unscrew the low pressure O2 fitting 0 Remove the white cone filter and dislodge amp remove the white Delrin retaining ring use needle nose pliers if needed Using needle nose pliers the black duck billed check valve should come out easily Figure 5 9 White Delrin retaining washer and duck billed check valve To replace place the black duck billed check valve and insert it into the fitting Tap lightly with the end of a screwdriver to make sure it is seated then place the Delrin retaining ring over it with the lip facing into the Vela as shown in figure X X Place the new cone filter onto

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