Covidien Puritan Bennett 700 Series User manual

Service Manual
Puritan Bennett
700 Series Ventilator Systems
TM

To obtain information about a warranty, if any, contact Covidien Technical Services at
1.800.635.5267 or your local representative.
Purchase of this instrument confers no express or implied license under any Covidien patent
to use the instrument with any ventilator that is not manufactured or licensed by Covidien.

Preface
Puritan Bennett™ 700 Series Ventilator System Service Manual 10070389 Rev. A iii
Copyright Information
Copyright 2011 Covidien. All rights reserved. The 740 and 760 Ventilator Systems are manufactured in accordance
with Covidien proprietary information, covered by one or more of the following U.S. Patents 5,540,222; 5,596,984;
5,632,270; 5,664,560; 5,673,689; 5,909,731; 5,915,382; 5,934,274; 6,116,240; 6,142,150; 6,321,748; 6,467,478.
The information contained in this manual is the sole property of Covidien and may not be duplicated without
permission. This manual may be revised or replaced by Covidien at any time and without notice. You should ensure
you have the most current applicable version of this manual; if in doubt, contact the Technical Communications
Department of Covidien or call Technical Support at 1.800.255.6774, or contact your product representative. While
the information set forth herein is believed to be accurate, it is not a substitute for the exercise of professional
judgment.
The ventilator should be operated and serviced only by trained professionals. Covidien’s sole responsibility with
respect to the ventilator, and its use, is as stated in the limited warranty provided.
Nothing in this manual shall limit or restrict in any way Covidien’s right to revise or otherwise change or modify the
equipment (including its software) described herein, without notice. In the absence of an express, written agreement
to the contrary, Covidien has no obligation to furnish any such revisions, changes, or modifications to the owner or
user of the equipment (including its software) described herein.
Trademarks
COVIDIEN, COVIDIEN with logo, the Covidien logo and positive results for life are U.S. and
internationally registered trademarks of Covidien AG. All other brands are trademarks of a
Covidien company.
Addresses
Manufacturer
Covidien llc
15 Hampshire Street
Mansfield, MA 02048
USA

Preface
iv 10070389 Rev. A Puritan Bennett™ 700 Series Ventilator System Service Manual
Preface
This manual is intended to provide information needed to service the Puritan Bennett™
700 Series Ventilator System. It is intended for use by certified biomedical engineering
technicians or personnel with equivalent experience and training in servicing this type of
equipment. The user should complete the Covidien training class geared specifically to the
740 or 760 Ventilator System.
While this manual covers the ventilator configurations currently supported by Covidien, it
may not be all-inclusive and may not be applicable to your ventilator. Within the USA, contact
Covidien at 1-(800)-635-5267 for questions about the applicability of the information.
Definitions
This manual uses three special indicators to convey information of a specific nature. They
include:
Warning
Indicates a condition that can endanger the patient or the ventilator operator.
Caution
Indicates a condition that can damage the equipment.
NOTE:
Indicates points of particular emphasis that make operation of the ventilator more
efficient or convenient.
Warnings, cautions, and notes
Please take the time to become familiar with the following, as they cover safety
considerations, special handling requirements, and regulations that govern the use of the
700 Series Ventilator Systems.
Warning
To ensure proper servicing and avoid the possibility of physical injury, only qualified
personnel should attempt to service or make authorized modifications to the
ventilator.
The user of this product shall have sole responsibility for any ventilator malfunction
due to operation or maintenance performed by anyone not trained by Covidien staff.
Warning
To avoid an electrical shock hazard while servicing the ventilator, be sure to remove all
power to the ventilator by disconnecting the power source and turning off all
ventilator power switches.

Preface
Puritan Bennett™ 700 Series Ventilator System Service Manual 10070389 Rev. A v
Warning
To avoid a fire hazard, keep matches, lighted cigarettes, and all other sources of
ignition (e.g., flammable anesthetics and/or heaters) away from the 700 Series
Ventilator System and oxygen hoses.
Do not use oxygen hoses that are worn, frayed, or contaminated by combustible
materials such as grease or oils. (Textiles, oils, and other combustibles are easily ignited
and burn with great intensity in air enriched with oxygen.)
In case of fire or a burning smell, immediately disconnect the ventilator from the
oxygen supply and electrical power source.
Warning
Patients on life-support equipment should be appropriately monitored by competent
medical personnel and suitable monitoring devices.
The 700 Series Ventilator System is not intended to be a comprehensive monitoring
device and does not activate alarms for all types of dangerous conditions for patients
on life-support equipment.
Warning
An alternative source of ventilation should always be available when using the 700
Series Ventilator System.
Caution
For a thorough understanding of ventilator operations, be sure to read the
700 Series Ventilator System Operator’s Manual in its entirety before attempting to use
the system.
Caution
Before activating any part of the ventilator, be sure to check the equipment for proper
operation and, if appropriate, run the self-diagnostic programs described in Chapter 3.
Caution
Federal law (US) restricts the sale of this device to, or by the order of, any physician.
Caution
Check the ventilator periodically as outlined in the service manual; do not use if
defective. Immediately replace parts that are broken, missing, obviously worn,
distorted, or contaminated.

Preface
vi 10070389 Rev. A Puritan Bennett™ 700 Series Ventilator System Service Manual
Warranty
The 700 Series Ventilator System is warranted against defects in material and workmanship in
accordance with Covidien Medical Equipment Warranty for a period of one year from the
time of sale. To ensure the validity of the warranty, be sure to keep a maintenance record.
Year of manufacture
The 700 Series Ventilator System’s year of manufacture is indicated by the fifth and sixth
digits of the serial number located at the lower edge of the ventilator front panel.
Manufacturer
Covidien llc
15 Hampshire Street
Mansfield, MA 02048
USA
Electromagnetic susceptibility
The 700 Series Ventilator System complies with the requirements of IEC 601-1-2 (EMC
Collateral Standard), including the E-field susceptibility requirements at a level of 10 volts per
meter, at frequencies from 26 MHz to 1 GHz, and the ESD requirements of this standard.
However, even at this level of device immunity, certain transmitting devices (cellular phones,
walkie-talkies, cordless phones, paging transmitters, etc.) emit radio frequencies that could
interrupt ventilator operation if located in a range too close to the ventilator. It is difficult to
determine when the field strength of these devices becomes excessive. Practitioners should
be aware radio frequency emissions are additive, and the ventilator must be located a
sufficient distance from transmitting devices to avoid interruption. Do not operate the
ventilator in a magnetic resonance imaging (MRI) environment. Chapter 7 describes possible
ventilator alarms and what to do if they occur. Consult with your institution’s biomedical
engineering department in case of interrupted ventilator operation, and before relocating
any life support equipment.
Customer assistance
For further assistance contact your local Covidien representative.

Preface
Puritan Bennett™ 700 Series Ventilator System Service Manual 10070389 Rev. A vii
Symbols and labels
These symbols and labels appear on the 700 Series Ventilator System:
Power switch positions per IEC 601-1. ”I” represents ON position; “O”
represents OFF position.
Refer to manual per IEC 601-1. When this symbol appears on product, it
means “Refer to documentation for information.”
Potential equalization point, per IEC 601-1
External battery connection
Circuit breaker
Serial number
AC current
Type B equipment, per IEC 601-1
Indicates the degree of protection provided by enclosure
(drip-proof).
Signifies compliance with the Medical Device Directive,
2007/47/EC.
CSA and NRTL (Nationally Recognized Testing Laboratory) certification,
granted by CSA
The TÜV Rheinland logo signifies TÜV Rheinland Type Test approval to
Annex III of the Medical Device Directive
SN
IPX1

Preface
viii 10070389 Rev. A Puritan Bennett™ 700 Series Ventilator System Service Manual
Exhaust port connector
Inspiratory limb connector
Expiratory limb connector
Oxygen inlet port label
Air intake label
Cooling fan label
General life support equipment warning label
EXHAUST
!
TO
PATIENT
FROM
PATIENT
O2
40 - 90 psi
(275 - 620 kPa)
Use 50 psi (345 kPa)
Vmax = 160 L/min
(at STPD)
!
WARNING:
AIR INTAKE - DO NOT OBSTRUCT. Filter located behind panel.
Replace filter every 1,000 running hours or every 3 months,
whichever occurs first. Consult operator’s manual for complete
instructions.
!
CAUTION:
COOLING FAN- DO NOT OBSTRUCT.
Filter located behind panel. Clean or replace filter as
required every 250 running hours or every month,
whichever occurs first. Consult operator’s manual for
complete instructions.
!
WARNING:
This ventilator is not intended to be a comprehensive monitoring device: some
types of dangerous conditions will not activate alarms. Patients on life-support
equipment should be appropriately monitored by competent medical personnel
and suitable monitoring devices.
WARNING:
Before use, read operator’s manual thoroughly. Before each use, check
equipment for proper operation.
!
!

Preface
Puritan Bennett™ 700 Series Ventilator System Service Manual 10070389 Rev. A ix
Back panel label (740)
7-00311

Preface
x 10070389 Rev. A Puritan Bennett™ 700 Series Ventilator System Service Manual
Back panel label (760)
7-00312

SECTION
Puritan Bennett™ 700 Series Ventilator System Service Manual 10070389 Rev. A xi
Table of Contents 2
1 General information
1.1 How to use this manual............................................................................................. 1-1
1.2 Safety.......................................................................................................................... 1-1
1.3 General description.................................................................................................... 1-2
1.4 Configuration information........................................................................................ 1-4
1.5 Accessories..................................................................................................................1-4
1.6 Specifications.............................................................................................................. 1-4
1.7 Manufacturer’s Declaration ...................................................................................... 1-9
1.8 Tools, equipment, and service materials ................................................................ 1-15
1.9 Periodic maintenance .............................................................................................. 1-18
1.10 Service kits................................................................................................................1-19
1.11 Controls and indicators............................................................................................ 1-19
1.11.1 Ventilator Settings...................................................................................... 1-22
1.11.2 Patient Data ............................................................................................... 1-27
1.11.3 Ventilator Status ........................................................................................ 1-30
1.12 Location of ventilator serial number...................................................................... 1-31
1.13 Determining software revision ............................................................................... 1-31
1.14 Service philosophy ................................................................................................... 1-31
1.15 Reference documentation....................................................................................... 1-32
2 Theory of operation
2.1 Overview of ventilator operation............................................................................. 2-1
2.2 Pneumatic system....................................................................................................... 2-3
2.2.1 Gas Inlet System Overview ........................................................................... 2-7
2.2.1.1 Gas inlet system components................................................................ 2-10
2.2.1.2 System operation ................................................................................... 2-12
2.2.2 Piston/cylinder system................................................................................. 2-14
2.2.2.1 Component descriptions ....................................................................... 2-14
2.2.2.2 Operational description of piston/cylinder system .............................. 2-16
2.2.3 Inspiration manifold system ....................................................................... 2-21
2.2.3.1 Component descriptions ....................................................................... 2-21
2.2.3.2 Operational description ........................................................................ 2-22
2.2.4 Patient system ............................................................................................. 2-25
2.2.5 Exhalation system ....................................................................................... 2-28
2.2.5.1 Component descriptions ....................................................................... 2-28
2.2.5.2 Operational description ........................................................................ 2-31
2.2.6 PEEP/CPAP system ....................................................................................... 2-32
2.2.6.1 Component descriptions ....................................................................... 2-32
2.2.6.2 System operation ................................................................................... 2-32
2.3 Electrical system ...................................................................................................... 2-35
2.3.1 Power assembly........................................................................................... 2-39
2.3.1.1 Power input section............................................................................... 2-41
2.3.1.2 Power supply.......................................................................................... 2-43
2.3.1.3 Battery backup (BBU) PCB ..................................................................... 2-43
2.3.1.4 Power supply fan ................................................................................... 2-45
2.3.2 Internal battery........................................................................................... 2-46

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xii 10070389 Rev. A Puritan Bennett™ 700 Series Ventilator System Service Manual
2.3.3 External battery .......................................................................................... 2-47
2.3.4 Pressure solenoid PCB................................................................................. 2-48
2.3.5 Backup alarm driver.................................................................................... 2-51
2.3.6 Controller PCB............................................................................................. 2-51
2.3.7 User interface (UI)....................................................................................... 2-55
2.3.8 Miscellaneous electronic parts ................................................................... 2-59
2.3.8.1 Speaker................................................................................................... 2-59
2.3.8.2 Piezo alarm............................................................................................. 2-59
2.3.8.3 Main fan................................................................................................. 2-60
2.3.8.4 Air flow thermistor assembly ................................................................ 2-61
2.3.8.5 Air intake filter switch........................................................................... 2-62
2.4 Communications option .......................................................................................... 2-62
2.5 Motor control and drive.......................................................................................... 2-62
2.6 Breath delivery......................................................................................................... 2-63
2.6.1 Piston initialization..................................................................................... 2-66
2.6.2 Breath triggering ........................................................................................ 2-67
2.6.3 Gas delivery to the patient......................................................................... 2-69
2.6.4 Exhalation and piston retraction ............................................................... 2-71
2.6.4.1 Exhalation .............................................................................................. 2-71
2.6.4.2 Piston retraction .................................................................................... 2-71
2.6.4.3 Mandatory breathing with delivered volumes less than 250 ml ........ 2-72
2.7 Power source switchover......................................................................................... 2-77
2.8 Emergency modes.................................................................................................... 2-79
2.8.1 Occlusion cycling mode .............................................................................. 2-79
2.8.2 Ventilator inoperative ................................................................................ 2-80
2.8.2.1 When the VENT INOP condition is triggered....................................... 2-80
2.8.2.2 How the ventilator responds to a VENT INOP condition .................... 2-80
2.8.2.3 How to clear the VENT INOP condition................................................ 2-80
2.8.3 Safety valve open (SVO) ............................................................................. 2-81
3 Self-tests
3.1 Introduction ............................................................................................................... 3-1
3.2 Power-on self-test (POST).......................................................................................... 3-2
3.2.1 Structure of POST.......................................................................................... 3-2
3.2.2 Running POST................................................................................................ 3-2
3.2.3 How the ventilator responds to a POST error............................................. 3-3
3.3 Short self-test (SST) .................................................................................................... 3-6
3.4 Extended self-test (EST) ............................................................................................. 3-6
3.4.1 When to run.................................................................................................. 3-6
3.4.2 Hardware requirements ............................................................................... 3-7
3.4.3 Running EST .................................................................................................. 3-7
3.4.4 Troubleshooting.......................................................................................... 3-15
3.5 Ongoing checks........................................................................................................ 3-21

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Puritan Bennett™ 700 Series Ventilator System Service Manual 10070389 Rev. A xiii
4 Service and utility functions
4.1 Introduction ............................................................................................................... 4-1
4.1.1 Accessing the service or utilities functions .................................................. 4-1
4.1.2 Summary of functions................................................................................... 4-2
4.1.3 Navigating the Service and Utilities menus................................................. 4-2
4.1.4 About the test and alert logs and EST test results...................................... 4-4
4.2 Service functions ........................................................................................................ 4-4
4.2.1 Sensor data.................................................................................................... 4-4
4.2.2 EST (Extended self-test) ................................................................................ 4-8
4.2.3 Diagnostics/Calib ........................................................................................... 4-8
4.2.3.1 Enable serial port..................................................................................... 4-9
4.2.3.2 Run tests ................................................................................................. 4-10
4.2.3.3 Clear test log: Erasing the test log........................................................ 4-20
4.2.3.4 Clear alert log: Erasing the alert log .................................................... 4-20
4.2.3.5 Update constants: Manually inputting calibration constants
into NVRAM. .......................................................................................... 4-20
4.2.3.6 Review constants: Viewing calibration constants in NVRAM ............. 4-21
4.2.3.7 Reset service data .................................................................................. 4-21
4.2.4 Review alert log: Reading the alert log..................................................... 4-23
4.2.5 Test data: Reading the test log or EST test results.................................... 4-23
4.2.5.1 Review test log: Reading the test log................................................... 4-24
4.2.5.2 Review EST tests: Reading pass/fail status of EST tests........................ 4-24
4.3 Utilities functions..................................................................................................... 4-24
4.3.1 Pressure format........................................................................................... 4-24
4.3.2 Date and time format................................................................................. 4-24
5 Performance verification
5.1 When to run ............................................................................................................... 5-1
5.2 Tools, test equipment, and service materials ........................................................... 5-2
5.3 Preliminary ventilator cleaning and inspection ....................................................... 5-3
5.4 Preliminary ventilator setup...................................................................................... 5-4
5.5 Preliminary pneumatic test equipment setup.......................................................... 5-4
5.6 Performance verification procedures ....................................................................... 5-4
5.6.1 Electrical safety test and power-on self-test (POST) (Test 1) ...................... 5-5
5.6.2 Rotary encoder test (Test 2) ......................................................................... 5-6
5.6.3 Battery test (Test 3)....................................................................................... 5-6
5.6.3.1 External/internal battery test.................................................................. 5-6
5.6.3.2 Internal battery test................................................................................. 5-7
5.6.4 Backup alarm test ......................................................................................... 5-7
5.6.5 Supply voltage test (Test 4) .......................................................................... 5-8
5.6.6 Gas volume accuracy, breath timing, and PEEP system test (Test 5),
using the PTS 2000 and Breathlab software ............................................... 5-9
5.6.7 Extended self-test (EST) (Test 6) ................................................................. 5-12
5.6.8 Oxygen accuracy test (Test 7) using the PTS 2000..................................... 5-13
5.6.9 High pressure alarm test (Test 8) using the PTS 2000 ............................... 5-15
5.6.10 Safety valve test (Test 9) ............................................................................. 5-16
5.7 Troubleshooting....................................................................................................... 5-17

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xiv 10070389 Rev. A Puritan Bennett™ 700 Series Ventilator System Service Manual
6 Diagnostic codes
6.1 How to use this chapter ............................................................................................ 6-1
6.2 About software errors ............................................................................................... 6-2
6.3 About ventilator status (13000 series) codes............................................................ 6-2
6.4 List of codes................................................................................................................6-2
6.4.1 Error code 1101............................................................................................. 6-2
6.4.2 Error code 06027........................................................................................... 6-3
6.4.3 Error code 09169........................................................................................... 6-4
7 Alarm messages
7.1 Alarm classifications .................................................................................................. 7-1
7.2 Responding to alarms................................................................................................ 7-2
8 Service and repair
8.1 Introduction ............................................................................................................... 8-1
8.1.1 How to use this chapter................................................................................ 8-1
8.1.2 General repair safety .................................................................................... 8-1
8.1.3 General repair guidelines............................................................................. 8-2
8.1.4 Repair-related cleaning ................................................................................ 8-3
8.1.5 Electrical cables and pneumatic tubing....................................................... 8-3
8.1.6 Adhesive use.................................................................................................. 8-3
8.1.7 Electrostatic discharge control..................................................................... 8-4
8.1.7.1 General information................................................................................ 8-4
8.1.7.2 Procedures and precautions.................................................................... 8-4
8.1.8 Repainting and touch-up ............................................................................. 8-5
8.1.9 Replacement part ordering .......................................................................... 8-5
8.1.10 Post-repair ..................................................................................................... 8-5
8.2 Patient system and accessories.................................................................................. 8-5
8.3 Cart assembly ............................................................................................................. 8-6
8.3.1 Installing ventilator cart appearance kit ..................................................... 8-6
8.3.2 Removing/installing ventilator from/to cart................................................ 8-6
8.3.3 Removing/installing oxygen cylinder brackets............................................ 8-8
8.3.4 Removing/installing cylinder covers ............................................................ 8-9
8.3.5 Removing/installing collector vial support bracket ................................... 8-9
8.3.6 Removing/installing humidifier support bracket ....................................... 8-9
8.3.6.1 Fisher & Paykel™* humidifier support bracket ..................................... 8-9
8.3.6.2 Hudson RCI™* humidifier support bracket assembly ........................... 8-9
8.3.7 Removing/installing basket .......................................................................... 8-9
8.3.8 Removing/installing external battery and cover....................................... 8-11
8.4 Shelf mount.............................................................................................................. 8-12
8.4.1 Removing/installing ventilator from/to shelf mount................................ 8-12
8.4.2 Removing/installing collector vial support bracket .................................. 8-13
8.4.3 Removing/installing humidifier support bracket...................................... 8-13

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Puritan Bennett™ 700 Series Ventilator System Service Manual 10070389 Rev. A xv
8.5 User interface (UI) assembly (lid) ............................................................................ 8-14
8.5.1 Opening and propping lid.......................................................................... 8-14
8.5.2 Removing/installing lid ............................................................................... 8-14
8.5.3 Knob and rotary encoder ........................................................................... 8-16
8.5.4 UI display PCB.............................................................................................. 8-17
8.5.5 LCD panel (message window) .................................................................... 8-18
8.5.6 Keyboard assembly ..................................................................................... 8-19
8.6 Ventilator head cabinet assembly........................................................................... 8-20
8.6.1 Oxygen adapter assembly .......................................................................... 8-20
8.6.2 Options panel plate .................................................................................... 8-21
8.6.3 Communications option ............................................................................. 8-22
8.6.3.1 Remote alarm harness and connector.................................................. 8-23
8.6.3.2 Nebulizer harness and connector ......................................................... 8-24
8.6.3.3 Nurse call (central station) harness and connector.............................. 8-24
8.6.3.4 Serial (RS-232) port hardware ............................................................... 8-25
8.6.3.5 Communications option PCB assembly................................................. 8-25
8.6.3.6 Communications option plate assembly .............................................. 8-26
8.6.3.7 Communications option ribbon cable .................................................. 8-26
8.6.4 Air intake cover and filter .......................................................................... 8-27
8.6.5 Air flow thermistor assembly ..................................................................... 8-28
8.6.6 Oxygen fitting, inspiration access panel, and air intake manifold
assembly ...................................................................................................... 8-28
8.6.7 Air intake filter switch ................................................................................ 8-30
8.6.8 Flex arm mounting block............................................................................ 8-31
8.6.9 Removing/installing cabinet assembly....................................................... 8-31
8.7 Oxygen regulator, oxygen solenoid, mixing manifold, and cylinder inlet
check valve ............................................................................................................... 8-32
8.7.1 Removing oxygen regulator, oxygen solenoid, mixing manifold,
and cylinder inlet check valve .................................................................... 8-32
8.7.2 Installing oxygen regulator, oxygen solenoid assembly, mixing
manifold, and cylinder inlet check valve ................................................... 8-35
8.7.3 Oxygen regulator pressure transducer ...................................................... 8-35
8.8 Inspiration manifold assembly ................................................................................ 8-36
8.8.1 Oxygen sensor ............................................................................................. 8-36
8.8.2 Inspiration manifold thermistor................................................................. 8-38
8.8.3 Safety valve assembly ................................................................................. 8-38
8.8.4 Removing/installing inspiration manifold assembly ................................. 8-38
8.9 Exhalation assembly................................................................................................. 8-39
8.9.1 Exhalation assembly cover.......................................................................... 8-39
8.9.2 Exhalation heater and thermistor assemblies ........................................... 8-40
8.9.2.1 Removing exhalation heater and thermistor assemblies .................... 8-40
8.9.2.2 Installing exhalation heater and thermistor assemblies ..................... 8-42
8.9.3 Exhalation assembly.................................................................................... 8-42
8.9.4 Exhalation check valve................................................................................ 8-43
8.9.5 Exhalation valve.......................................................................................... 8-44
8.9.6 Exhalation flow sensor assembly ............................................................... 8-44

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xvi 10070389 Rev. A Puritan Bennett™ 700 Series Ventilator System Service Manual
8.10 Cable management bar, PCBs, speaker, and piezo alarm ..................................... 8-45
8.10.1 Speaker........................................................................................................ 8-45
8.10.2 Piezo alarm.................................................................................................. 8-46
8.10.3 Pressure solenoid PCB and controller PCB................................................. 8-46
8.10.3.1 Removing/installing pressure solenoid PCB ......................................... 8-46
8.10.3.2 Removing/installing backup alarm PCB................................................ 8-47
8.10.3.3 Determine PSOL PCB revision................................................................ 8-47
8.10.3.4 Testing.................................................................................................... 8-48
8.10.3.5 Removing/installing controller PCB ...................................................... 8-49
8.10.3.6 Removing/installing software EPROMs ................................................ 8-50
8.10.3.7 Removing/installing NVRAM................................................................. 8-51
8.10.3.8 Updating NVRAM data.......................................................................... 8-52
8.10.4 Cylinder and exhalation pressure transducer autozero solenoids........... 8-54
8.10.5 Cable management bar.............................................................................. 8-54
8.11 PEEP pump and reservoir ........................................................................................ 8-55
8.11.1 PEEP pump................................................................................................... 8-55
8.11.2 PEEP reservoir and filter ............................................................................. 8-55
8.11.3 Exhalation solenoid .................................................................................... 8-56
8.12 Piston/cylinder and motor/encoder assemblies...................................................... 8-57
8.12.1 Optoswitches............................................................................................... 8-57
8.12.2 Removing/installing piston/cylinder and motor/encoder assemblies....... 8-58
8.12.3 Greasing rack .............................................................................................. 8-59
8.12.4 Meshing motor pinion gear with rack....................................................... 8-60
8.13 Ventilator rear components.................................................................................... 8-64
8.13.1 Main fan and filter...................................................................................... 8-64
8.13.2 Internal battery........................................................................................... 8-64
8.14 Power assembly........................................................................................................ 8-66
8.14.1 Power cord .................................................................................................. 8-66
8.14.2 Removing power assembly......................................................................... 8-66
8.14.3 Line filter ..................................................................................................... 8-67
8.14.4 Circuit breaker............................................................................................. 8-68
8.14.5 Power switch ............................................................................................... 8-68
8.14.6 External battery harness............................................................................. 8-69
8.14.7 Power supply............................................................................................... 8-70
8.14.8 Power supply fan ........................................................................................ 8-73
8.14.9 BBU PCB and heatsink bars ........................................................................ 8-74
8.14.9.1 Fuses ....................................................................................................... 8-75
8.15 Harnesses and wiring............................................................................................... 8-75
8.15.1 Main ventilator head harness .................................................................... 8-75
9 Parts list
9.1 How to use this parts list ........................................................................................... 9-1
9.2 700 Series Ventilator System patient system and accessories parts list ................. 9-2
9.3 Oxygen hose assemblies ............................................................................................ 9-5
9.4 Flex arm assembly ...................................................................................................... 9-6
9.5 Ventilator major assemblies...................................................................................... 9-7
9.6 Cart assembly ............................................................................................................ 9-9
9.7 Shelf mounting kit................................................................................................... 9-15
9.8 User interface (UI) assembly ................................................................................... 9-17

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Puritan Bennett™ 700 Series Ventilator System Service Manual 10070389 Rev. A xvii
9.9 Ventilator head assembly ....................................................................................... 9-20
9.10 Oxygen hose adapters ............................................................................................ 9-27
9.11 Label kit ................................................................................................................... 9-28
9.12 Inspiration manifold assembly ............................................................................... 9-30
9.13 Oxygen regulator and oxygen solenoid assembly ................................................ 9-32
9.14 Exhalation assembly ................................................................................................ 9-34
9.15 Cable management bar, PCBs, speaker, and piezo alarm .................................... 9-37
9.16 PEEP pump and reservoir ........................................................................................ 9-41
9.17 Piston/cylinder and motor/encoder assemblies ...................................................... 9-43
9.18 Ventilator rear components ................................................................................... 9-46
9.19 Power assembly ....................................................................................................... 9-48
9.20 Power cords.............................................................................................................. 9-54
9.21 Tubing....................................................................................................................... 9-56
9.22 Harnesses and wiring .............................................................................................. 9-58
9.23 15,000-hour preventive maintenance kit .............................................................. 9-61
9.24 30,000-hour preventive maintenance kit ............................................................... 9-62
9.25 Oxygen sensor assemblies ....................................................................................... 9-63
9.26 Communications option .......................................................................................... 9-63
9.27 760 Ventilator assemblies........................................................................................ 9-63
A Alphabetic part index
B Numeric parts index

xviii 10070389 Rev. A Puritan Bennett™ 700 Series Ventilator System Service Manual
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SECTION
Puritan Bennett™ 700 Series Ventilator System Service Manual 10070389 Rev. A xix
Figures 2
Figure 1-1. 700 Series Ventilator System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Figure 1-2. Controls and indicators on 740 Ventilator keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
Figure 1-3. Controls and indicators on 760 Ventilator keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
Figure 2-1. 700 Series Ventilator System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Figure 2-2. Pneumatic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Figure 2-3. Gas inlet system pneumatic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Figure 2-4. Gas inlet system (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Figure 2-5. Gas inlet system components (1 of 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Figure 2-6. Piston/cylinder system pneumatic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Figure 2-7. Piston/cylinder system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Figure 2-8. Piston/cylinder system components (1 of 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Figure 2-9. Motor/encoder pinion gear and rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Figure 2-10. Operation of optical encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Figure 2-11. Inspiration manifold system pneumatic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Figure 2-12. Inspiration manifold system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Figure 2-13. Inspiration manifold system components (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Figure 2-14. Patient system pneumatic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
Figure 2-15. Patient system components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
Figure 2-16. Exhalation system pneumatic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
Figure 2-17. Exhalation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
Figure 2-18. Exhalation system components (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30
Figure 2-19. PEEP/CPAP system pneumatic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
Figure 2-20. PEEP/CPAP system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
Figure 2-21. PEEP/CPAP system components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
Figure 2-22. Main ventilator head harness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
Figure 2-23. 700 Series Ventilator System block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36
Figure 2-24. Wiring diagram (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37
Figure 2-25. Power assembly (1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
Figure 2-26. Power assembly harnesses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41
Figure 2-27. Power supply/ventilator head harness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41
Figure 2-28. Power input components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42
Figure 2-29. Power supply with harnesses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43
Figure 2-30. BBU PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-44
Figure 2-31. BBU PCB and fan installed in power assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
Figure 2-32. Power supply fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
Figure 2-33. Internal battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46
Figure 2-34. Internal battery and main fan installed in ventilator . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
Figure 2-35. External battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48
Figure 2-36. Pressure solenoid PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-50
Figure 2-37. Pressure solenoid and controller PCBs installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-50
Figure 2-38. Controller PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-52
Figure 2-39. EPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53
Figure 2-40. User interface (UI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-56
Figure 2-41. UI display PCB (740 shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-57
Figure 2-42. 4-line x 20-character LCD panel (message window) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-57
Figure 2-43. Keyboard assembly (740 shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-58