Respironics BiPAP Vision User manual

BiPAP Vision Ventilatory Support System
SERVICE MANUAL

ii BiPAP Vision Service Manual © Respironics, Inc. 1062788
The BiPAP Vision Ventilatory Support System is the subject of U.S. patents #5148802, #5239995,
#5313937, #5433193, and other pending U.S. and foreign patents. BiPAP and Vision are trademarks of
Respironics/Phillips Healthcare.
Copyright © 2009 Respironics, Inc.
ALL RIGHTS RESERVED
This work is protected under Title 17 of the United States copyright code and is the sole property of Respironics.
No part of this document may be copied or otherwise reproduced, or stored in any electronic information
retrieval system, except as specifically permitted under United States copyright law, without the prior written
consent of Respironics.
Limited Warranty
Respironics warrants that the BiPAP Vision Ventilatory Support System (BiPAP Vision) shall be free from defects
of workmanship and materials and will perform in accordance with the product specifications for a period of one
year from the date of sale by Respironics. If the product fails to perform in accordance with the product
specifications, Respironics will repair or replace—at its option—the defective material or part. Respironics will
pay customary freight charges from Respironics to the dealer location only. This warranty does not cover damage
caused by accident, misuse, abuse, alteration, and other defects not related to materials or workmanship.
Respironics disclaims all liability for economic loss, loss of profits, overhead or consequential damages which
may be claimed to arise from any sale or use of this product. Some states do not allow the exclusion or
limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.
This warranty is given in lieu of all other express warranties. In addition, any implied warranty, including any
warranty of merchantability or fitness for the particular purpose, is limited to one year. Some states do not allow
limitations on how long an implied warranty lasts, so the above limitation may not apply to you. This warranty
gives you specific legal rights, and you may also have other rights which vary from state to state.
The warranty for repairs is 90 days for labor and one year on the part(s) that was replaced.
To exercise your right under this warranty, contact your local authorized Respironics dealer or contact
Respironics at:
For Technical Support, contact:
Respironics. Inc. Technical Service
Within the U.S.A. 1-800-345-6443
Outside the U.S.A. [phone]
Facsimile [phone]
[email protected]
Respironics, Inc.©Respironics©Deutschland
1001 Murry Ridge Lane Gewerbestrasse 17
Murrysville, Pennsylvania 82211 Herrsching
15668-8550 USA Germany

1062788 BiPAP Vision Service Manual © Respironics, Inc. iii
Table of Contents
1 Introduction and Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1 Service Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.2 Tools and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.3 Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
2 Warnings, Cautions, and Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2 Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.3 Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
3 Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1 PSS Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.1.1 Input Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.1.2 DC Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
3.1.3 Overvoltage Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.1.4 AC Fail Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.1.5 Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
3.2 MC Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
3.2.1 Power Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.2.2 Error LED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.2.3 Real-Time Clock Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
3.2.4 Watchdog and Power On Reset Circuit . . . . . . . . . . . . . . . . . . . . . . . . 3-11
3.2.5 Error Line Control Circuit (ELC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
3.2.6 Microcontroller Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
3.3 PC Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
3.3.1 Microcontroller Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
3.3.2 Blower Motor Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
3.3.3 PRV and ILFR Drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
3.3.4 Pressure Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
3.3.5 Error Line Control (ELC) Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
3.3.6 RS-232 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
3.4 DC Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
3.4.1 DC/DC Converter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3.4.2 Display Backlight and Contrast Adjustment . . . . . . . . . . . . . . . . . . . . . 3-15
3.4.3 Display Voltage DC/DC Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3.4.4 Cold Cathode Fluorescent Tube (CCFT) Inverter. . . . . . . . . . . . . . . . . . 3-15
3.4.5 Reference Voltage Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

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3.4.6 Power Failure Alarm Battery Enable . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3.4.7 Alarm Battery Voltage Cutout/Check . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3.4.8 Backup Battery/Charger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3.4.9 Check Vent LED Enable Current Check . . . . . . . . . . . . . . . . . . . . . . . . 3-15
3.4.10 Vent Inop LED Current Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3.4.11 Error Line Control (ELC) Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3.4.12 Error LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3.4.13 Diagnostic Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3.4.14 EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3.4.15 LCD Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3.4.16 Debouncing/Keypad Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3.4.17 Rotary Encoder Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3.4.18 Audible Alarm Activation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
3.4.19 Audible Alarm Current Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
3.4.20 Safe State Power On. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
3.4.21 Watchdog and Low Voltage Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
3.5 Airflow Module (AFM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
3.5.1 Flow Body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
3.5.2 Analog Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
3.5.3 Flow Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
3.5.4 Pressure Indication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
3.5.5 Temperature Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
3.5.6 Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
3.5.7 Module Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
3.6 Oxygen Module (OM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
3.7 Ventilator Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
3.7.1 CPAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
3.7.2 Spontaneous/Timed (S/T) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
3.7.3 Proportional Assist Ventilation / Timed Mode (PAV/T). . . . . . . . . . . . . . 3-22
3.8 Nurse Call/Remote Alarm
(s/n 106000 and above only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

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1062788 BiPAP Vision Service Manual © Respironics, Inc. v
4 Periodic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.1 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2 Air Inlet Filter Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.3 Nylon Mesh Inlet Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4.4 Oxygen Regulator Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.5 Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.6 Internal Alarm Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.6.1 Low Internal Alarm Battery Error Code . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.6.2 Recharging the Internal Alarm Battery . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.6.3 Verifying the Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.7 Periodic Maintenance Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
5 Component Removal/Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1 Major Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.2 Air Inlet Filter Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.3 Cleaning/Replacing the Nylon Mesh Inlet Filter . . . . . . . . . . . . . . . . . . . . . . 5-5
5.4 Oxygen Regulator Filter and Bowl. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
5.5 Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
5.5.1 Voltage Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
5.6 Top Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
5.7 Front Panel Enclosure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
5.8 Display Control (DC) Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
5.9 Rotary Encoder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
5.10 Touch Pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
5.11 LCD Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
5.12 Blower. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
5.13 Oxygen Module (OM) Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
5.14 Air Flow Module (AFM), Oxygen Baffle . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23
5.15 Pressure Relief Valve (PRV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
5.16 Inline Flow Restrictor (ILFR) Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25
5.17 Main Power Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
5.18 Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
5.19 Pressure Control (PC) Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28
5.20 Main Control (MC) Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30
5.21 Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31
5.22 Power Supply Subsystem (PSS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32
5.23 RS-232 Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33
5.24 Nurse Call/Remote Alarm Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-34
5.25 AC Inlet Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35

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5.26 Transformer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-36
5.27 Pressure Relief Valve (PRV) Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . 5-37
5.28 Back Panel Strain Relief . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-38
5.29 Bumper Feet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-39
6 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.1 Troubleshooting Common Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.2 Alarm Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6.2.1 Check Vent and Vent Inop Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
6.2.2 Patient Alarm Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
6.2.3 Alarm Silence and Alarm Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
6.2.4 Flow Limit Control (FLC) State. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
6.3 Alarm Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
6.4 Troubleshooting Check Vent Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
6.5 Troubleshooting Vent Inop Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
6.6 Interpreting Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26
6.7 Vent Inop, Check Vent Error Code 201, Ventilation Continues. . . . . . . . . . . 6-27

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1062788 BiPAP Vision Service Manual © Respironics, Inc. vii
7 Testing and Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.1 Exhalation Port Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
7.2 Service Laptop Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
7.2.1 Selecting the Test Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
7.2.2 Setting Up the Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
7.2.3 Operating System Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
7.3 Transferring Total Operating Hours. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
7.4 Blower/Valve Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13
7.5 Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15
7.6 Run-in Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20
7.7 System Final Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21
7.7.1 System Final Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-23
7.7.2 Power Indicator and LCD Controls Test . . . . . . . . . . . . . . . . . . . . . . . . 7-24
7.7.3 Pressure Accuracy Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24
7.7.4 Flow Accuracy Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-25
7.7.5 Dynamic Pressure Regulation Test . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26
7.7.6 S/T Mode Performance Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27
7.7.7 Options and Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27
7.7.8 Alarms Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28
7.7.9 Oxygen Module (OM) Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29
7.7.10 PAV/T Mode Test (if installed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-31
7.7.11 Earth Resistance and Leakage Current Test. . . . . . . . . . . . . . . . . . . . 7-31
7.7.12 Nurse Call/Remote Alarm Test (if applicable) . . . . . . . . . . . . . . . . . . 7-32
7.8 Oxygen Module (OM) Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36
8 Options and Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1.1 PAV/T Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1.2 Oxygen Baffle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
8.2 Upgrades. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
8.2.1 Serial Number 105999 and Below. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
8.2.2 Obsolete Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-10
8.3 PC/MC/DC Upgrade Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

viii BiPAP Vision Service Manual © Respironics, Inc. 1062788
Table of Contents
A Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
8.4 Replacement Part Photos . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8
B Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
8.5 Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
8.6 Physical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
8.7 Electrical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
8.8 Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
8.9 Control Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
8.10 Display Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
8.11 Trigger Sensitivity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
8.12 Oxygen Module Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
8.13 Internal Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
8.14 Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5
8.15 Display Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6
C Schematics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

1062788 BiPAP Vision Service Manual © Respironics, Inc. 1-1
Chapter 1. Introduction and Intended Use
The BiPAP Vision Ventilatory Support System (BiPAP Vision) is a
microprocessor-controlled, positive pressure ventilatory assist system. The
BiPAP Vision (Figure 1-1) user interface includes multi-function keys, real
time graphic displays, and integral patient and system alarms.
Figure 1-1: BiPAP Vision
The BiPAP Vision features a centrifugal blower to generate airflow and internal
oxygen module, allowing single or combined gas therapy. The system operates
in these modes:
• continuous positive airway pressure (CPAP) mode
• spontaneous/timed pressure support (S/T) mode
• proportional assist ventilation/timed (PAV/T) mode (international
models only).
Integrated safety and self-diagnostic features check all system functions at
start-up and during operation. Visual and/or audible indicators report any
errors.
The BiPAP Vision regulates pressure by monitoring proximal airway pressure
and adjusting flows accordingly to ensure that the proximal pressure equals
the set pressure.

Chapter 1
1-2 BiPAP Vision Service Manual © Respironics, Inc. 1062788
Introduction and Intended Use
1.1 Service Notice Read this manual thoroughly prior to performing service or maintenance on the
BiPAP Vision. This manual contains advanced troubleshooting, calibration, and
maintenance instructions. All maintenance and repair work should be
performed by qualified biomedical technicians who have received appropriate
training and authorization to provide maintenance, repair, and service for the
BiPAP Vision.
1.2 Tools and
Equipment
Table 1-1 lists the recommended tools, test equipment, and materials required
to service and maintain the BiPAP Vision.
Table 1-1: Service Tools and Equipment
Description Manufacturer and model
Common hand tools:
• Flat-blade screwdrivers, small (long shaft)
and medium
• Phillips screwdriver, medium
• Nut drivers, 1/4-in., 5/16-in., 11/32-in.,
and 7/16-in.
• 1/4-in. wrench
• Needle-nose pliers, medium
Local supplier
Antistatic workstation, including grounded
mat and wrist strap
Local supplier
Electrical safety analyzer
• Earth resistance:
Range 0 to 19.99 ohms.
Resolution 0.01 ohms.
Accuracy + 5% + 1 digit.
• Leakage current:
Range 0 to 19.99 uA.
Resolution 1 uA.
Accuracy + 1% + 1 digit (2.5 to 1 kHz);
+1 digit (1 kHz to 1 MHz
• Dale Model LT544D
• Any commercially available electrical safety analyzer
that meets these specifications
Digital manometer
• Range of at least 0 to 40 cmH2O
• Accuracy of at least + 1.0% of reading.
• Certifier FA Plus Ventilator Gas Analyzer with high-flow
module and oxygen sensor kit (P/N 1040311)
• Certifier FA Plus with high- and low-flow modules and
oxygen sensor kit (P/N 1040312)
• Any commercially available digital manometer that
meets these specifications.

Chapter 1
Introduction and Intended Use
1062788 BiPAP Vision Service Manual © Respironics, Inc. 1-3
Flowmeter
• Range of at least 0 to 150 L/min
• Accuracy of at least + 1.0% of reading.
• Certifier FA Plus with high-flow module and oxygen
sensor kit (P/N 1040311)
• Certifier FA Plus with high- and low-flow modules and
oxygen sensor kit (P/N 1040312)
• Any commercially available flowmeter that meets these
specifications.
Digital multimeter
• 3 1/2-digit readout
• Fluke 87 digital multimeter
• Any commercially available digital multimeter that
meets these specifications
Service laptop computer
• Windows operating system
• HyperTerminal or equivalent software
Any commercially available laptop computer that meets
these specifications
Oxygen analyzer
• Range 0.0 to 100 %O2.
• Display resolution 0.1 %O2.
• Accuracy + 2% of full scale.
• Certifier FA Plus with high-flow module and oxygen
sensor kit (P/N 1040311)
• Certifier FA Plus with high- and low-flow modules and
oxygen sensor kit (P/N 1040312)
• Any commercially available oxygen analyzer that meets
these specifications
Oxygen tank, medical grade oxygen, and
regulator
Local supplier
Mechanical test lung
• Lung capacity of at least 1.2 L
• Ingmar Medical QuickLung test lung
• Michigan Instruments Model 1601 or 4600 test lung
• Any commercially available test lung that meets these
specifications
BiPAP Vision service kit (P/N 1021276) • Adjustable flow valve (P/N 1006120)
• Cable, D9 M/F (P/N 600075)
• Extraction tool (P/N 1006874)
• Oxygen enrichment kit (P/N 312710)
• RS-232 harness, MC, J3 to back panel (P/N 1004699)
• Silicone tube, 5-in. x 1/8-in. ID (x3)
• Tee fitting, 1/8 in. OD
• Test cable (P/N 582161)
• Test cable for s/n 106000 and above (P/N 1004823)
• Test orifice, 0.25 in.(P/N 332353)
• Whisper Swivel II assembly (P/N 332113)
Table 1-1: Service Tools and Equipment
Description Manufacturer and model

Chapter 1
1-4 BiPAP Vision Service Manual © Respironics, Inc. 1062788
Introduction and Intended Use
Respironics test cable(s) BiPAP Vision s/n 105999 and under:
• P/N 582161 (no upgrade)
• P/Ns 1004823 and P/N 1004699 (ribbon cable)
(upgraded, new PC/MC boards installed)
BiPAP Vision s/n 106000 and higher:
• P/N 1004823
NOTE: These test cables are included in BiPAP Vision
service kit P/N 1021276.
Pressure tubing, 1/8-in. ID
•6in.
•6ft.
• Other miscellaneous lengths as required
Local supplier
Loctite®222 liquid threadlock Local supplier
Tubing, smooth inner lumen
• 6-ft. length
• 18-in. length
• Other miscellaneous lengths as required
• P/N 301016
• P/N 100060
Service flow valve Respironics P/N 1037985
NOTE: This item can be used instead of the clamping-type
variable flow resistor P/N 1002160.
Isopropyl alcohol Local supplier
Cleaner such as Fantastik®or 409®Local supplier
Cleaning cloth Local supplier
Bacteria filter, 22 mm ID x 22 mm OD Local supplier
Mild detergent Local supplier
Table 1-1: Service Tools and Equipment
Description Manufacturer and model

Chapter 1
Introduction and Intended Use
1062788 BiPAP Vision Service Manual © Respironics, Inc. 1-5
1.3 Technical
Support
Respironics is committed to customer satisfaction. Contact Respironics with
questions or for technical support:
U.S. and Canada:
Phone: [phone]
Fax: [phone]
International:
Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
For Customer Service and Product Support contact:
Online: http://www.respironics.com

Chapter 1
1-6 BiPAP Vision Service Manual © Respironics, Inc. 1062788
Introduction and Intended Use
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1062788 BiPAP Vision Service Manual © Respironics, Inc. 2-1
Chapter 2. Warnings, Cautions, and Notes
Throughout this manual the following definitions apply:
WARNING: A condition that could cause injury to a patient or operator if the operating
instructions in this manual are not followed correctly.
CAUTION: A condition that could cause damage to, or shorten the service life of, the
device.
NOTE: Important information concerning the device.
2.1 Warnings • Do not use the BiPAP Vision in the presence of a flammable
anesthetic mixture with air, oxygen, or nitrous oxide.
• Oxygen supports combustion. Do not use oxygen while smoking or
in the presence of an open flame.
• The BiPAP Vision does not provide an oxygen sensor to monitor
oxygen concentrations delivered to the patient circuit. Use
oximetry to monitor the use of oxygen with the BiPAP Vision.
•IftheVent Inop (wrench) icon lights, see Chapter 6 of this manual
for troubleshooting information.
• Never attach oxygen tubing or any positive pressure source to the
pressure port on the front panel of the BiPAP Vision.
• Do not attempt to use the RS-232 connector on the back panel of
the device to obtain repair information during operation on a
patient.
• To ensure personal safety and correct device performance, only
qualified technicians are to perform repairs to the BiPAP Vision.
Contact Respironics for service training and authorization
information.
• High voltages are present inside this device. To avoid electrical
shock, disconnect the electrical supply before attempting any
repairs on the device.
• For continued protection against risk of fire, replace fuses with
those of the same type and rating only.
• To avoid electric shock, unplug the BiPAP Vision before cleaning.

Chapter 2
2-2 BiPAP Vision Service Manual © Respironics, Inc. 1062788
Warnings, Cautions, and Notes
2.2 Cautions • Do not allow any liquid to enter the cabinet or the inlet filter
during cleaning.
• If the BiPAP Vision is exposed to temperatures near the specified
limits for operating, storage, or transport temperatures, allow the
device to acclimate to room temperature before use.
• Position the unit on its base for proper operation.
• Always use the BiPAP Vision with an inlet filter installed.
• Do not exceed 100 psig oxygen supply pressure when using the
oxygen module.
• Electronic components used in this device are subject to
electrostatic discharge (ESD) damage. Perform all repairs to this
device in an antistatic, ESD-protected environment.
• Use only Respironics-approved repair parts.
2.3 Notes • Refer to the BiPAP Vision Clinical Manual for guidelines on
applications and operation, and for a complete list of operational
warnings, cautions, and notes.
• This device contains a rechargeable nickel-cadmium (NiCAD)
battery which is used by the alarms in the event of a power failure.
• A non-rechargeable lithium ion (Li-ion) battery on the MC board
powers the real-time clock (RTC) circuit when the device is off.
• Batteries must be replaced by an authorized service technician
using Respironics-approved batteries.
• Dispose of batteries according to manufacturer’s instructions and
institutional procedures. Follow all applicable regulations
regarding environmental protection.
• These boards are generally abbreviated as follows:
Display control (DC) board
Main control (MC) board
Pressure control (PC) board.
However, these abbreviations refer specifically to older boards in
non-upgraded units (built s/n 105999 and below):
Display control subsystem (DCS) board
Main control subsystem (MCS) board
Pressure airflow subsystem (PAS) board.
• Additional warnings, cautions, and notes appear in this manual.

1062788 BiPAP Vision Service Manual © Respironics, Inc. 3-1
Chapter 3. Theory of Operation
The BiPAP Vision is a microprocessor-controlled, positive pressure ventilatory
assist system. The system’s integral air intake filter draws in ambient air which
is then pressurized by the system’s centrifugal blower assembly. In the blower
discharge airway, the in-line flow restrictor (ILFR) valve and pressure
regulation valve (PRV) regulate total flow and pressure from the blower. The
oxygen module adds a controlled source of supplemental oxygen, up to 100%,
to the patient.
To ensure that the device delivers gas according to settings, the pressure
control (PC) board continuously monitors airflow module (AFM) readings for
total gas flow, temperature, generated pressure, and patient circuit pressure.
The PC board transmits process data to the main control (MC) board, which
then provides overall control of the BiPAP Vision and sends instructions to the
PC board regarding required ILFR-PRV valve stem positions and blower speed.
The unique design and operation of the device makes it suitable for mask
applications. Designed with the BiPAP Auto-Trak Sensitivity feature that
automatically adjusts to changing circuit conditions, the device can ensure
optimum patient-ventilator synchronicity despite changes in breathing patterns
and circuit leaks. (Refer to the BiPAP Vision Clinical Manual.)
A liquid crystal display (LCD) screen is mounted on the front enclosure. The
LCD and the display control (DC) board provide the primary user interface to
the BiPAP Vision. The user interface displays data, provides controls, and
visual and audible alarm indicators. The user uses the touch pad and rotary
encoder to provide input, and the display confirms the input. Display
information varies according to the state of the ventilator and operations being
performed.
The BiPAP Vision incorporates these safety features and self-diagnostic
systems:
• The device automatically checks internal system functions at startup
and periodically throughout normal operation.
• Audible and visual alarms occur in the event of principal subsystem
failures.
• Audible and visual patient alarms occur during normal operation.

Chapter 3
3-2 BiPAP Vision Service Manual © Respironics, Inc. 1062788
Theory of Operation
Ventilator settings are saved in case of AC power loss. The ventilator software
revision determines how operation resumes following an AC power loss:
• Software versions 11.0 - 11.11, 12.0 - 12.7, and 13.0 - 13.7: If AC
power is lost for approximately 10 seconds or less and the power switch
remains ON, the ventilator performs a system self test and returns to
normal operation using the same settings that were in effect before the AC
power loss.
If the AC power loss is longer than approximately 10 seconds and the
power switch remains ON, the ventilator performs a system self test,
displays the Exhalation Port Test screen, and does not resume ventilation.
• Software versions 11.12, 12.8, 13.8 and higher: If AC power is lost for
any length of time and the power switch remains ON, the ventilator
resumes operation that was in effect at the time of the AC power loss.
• For all software versions, if the power switch is turned OFF after AC power
is lost, when AC power is restored and the power switch is turned ON: the
ventilator performs the system self test, displays the Exhalation Port Test
screen, and does not automatically resume ventilation.
Table 3-1 summarizes the major BiPAP Vision subsystems.
Table 3-1: BiPAP Vision Subsystems
Subsystem Function
Power supply subsystem
(PSS)
Provides the bulk supply DC voltage to the BiPAP Vision subsystems.
Main control (MC) board Performs all control, data acquisition, and calculations required for user-selected
parameters. The MC board also performs the start-up test and reports all errors.
(Abbreviated as MCS board when referring specifically to older boards in non-
upgraded units built s/n 105999 and below.)
Pressure control (PC) board Controls the blower and valves to generate and regulate system pressure. The PC
board senses outlet pressure and patient pressure and regulates outlet pressure
to the patient circuit. (Abbreviated as PAS board when referring specifically to
older boards in non-upgraded units built s/n 105999 and below.)
Display control (DC) board Evaluates user inputs from the touch pad and passes valid parameters to the MC
board. The DC board receives display data from the MC board. The DC board also
has its own internal functions, whose results are reported to the MC board.
(Abbreviated as DCS board when referring specifically to older boards in non-
upgraded units built s/n 105999 and below.)
Airflow module (AFM) Includes the mass airflow sensor in the airstream, and provides an airflow
measurement interface to the PC board, allowing the PC board to measure total
flow, temperature, and system pressure.
In-line flow restrictor (ILFR) Regulates the total flow from the blower discharge.
Pressure regulation valve
(PRV)
Opens during exhalation to allow patient flow exhaust.
Oxygen module (OM) Regulates the oxygen released into the air from the blower according to the set
oxygen concentration level.

Chapter 3
Theory of Operation
1062788 BiPAP Vision Service Manual © Respironics, Inc. 3-3
Figure 3-1 shows the BiPAP Vision block diagram.
Figure 3-1: BiPAP Vision Block Diagram
*Applies to units with s/n 106000 and above
**Oxygen baffle installed in newer (s/n 106000 and above) and upgraded units
Filter
enclosure
Blower
muffler
Blower
ILFR
valve
PRV valve
O2baffle
AFM flow
body

Chapter 3
3-4 BiPAP Vision Service Manual © Respironics, Inc. 1062788
Theory of Operation
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