LTV 1200 User manual

p/n 18603-001, Rev. C LTV®1200/1150 Ventilator Service Manual Page i
Revision History
Revision Level Revision Date
Rev. A, ECO 4188 September 2006
Rev. B, ECO 4950 March 2008
Rev. C, ECO 5407 July 2008
Contact Information
Cardinal Health
Pulmonetic Systems
17400 Medina Rd., Suite 100
Minneapolis, Minnesota 55447-1341
Phone: [phone]
Office Fax: [phone]
Customer Care Center Phone: [phone], ext. 2
Customer Care Center Fax: [phone]
Sales/Marketing E-mail: [email protected]
Customer Care Center E-mail: [email protected]
Pulmonetic Systems Website: http://www.pulmonetic.com
LTV®1200 and LTV®1150 are trademarks belonging to Pulmonetic Systems
Copyright ©2008 Pulmonetic Systems, Minneapolis, Minnesota.

Page ii LTV®1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
User/Owner Responsibility
This manual is intended for use only by service personnel who have been trained and
authorized by Pulmonetic Systems to service the LTV® 1200/1150 ventilator.
Pulmonetic Systems does not condone or approve of service activity on its products by
untrained and unauthorized personnel. Pulmonetic Systems is not responsible for any
unauthorized repairs or any repairs made by unauthorized procedures.
Use of an incorrect part or failure to exercise due care in the installation, removal, servicing,
checkout or calibration of parts and equipment may result in damage or malfunction of the
equipment. This may also result in damage to property and injury including death.
The purchaser and installer of these parts shall bear full responsibility and liability for the
above. All maintenance performed within the applicable warranty period must be authorized
in advance by a Pulmonetic Systems’ Service representative in order to retain the warranty
status of the subject unit.
Warranty
Pulmonetic Systems warrants that the LTV®1200/1150 ventilator is free from defects in
material and workmanship for a period of one (1) year from the date of shipment, or 8,800
hours as measured on the usage meter, whichever comes first, with the following limitations:
The battery is warranted for ninety (90) days from date of shipment.
Pulmonetic Systems will, at its option, either repair, replace, or issue credit for products that
prove to be defective during the warranty period.
For warranty service or repair, the product must be returned to Pulmonetic Systems or a
service facility designated by Pulmonetic Systems, shipping prepaid by the Buyer.
LIMITATION OF WARRANTY
Ordinary maintenance, as specified in the LTV®1200/1150 Ventilator Operator’s and
Service Manuals, is not covered under the foregoing warranty
The foregoing warranty does not apply to defects resulting from:
1) Improper or inadequate maintenance of the unit;
2) Improper use or misuse of the unit;
3) Unauthorized modifications or repair to the unit;
4) Use of the unit with unauthorized accessories, e.g. external battery or AC adapter.
5) Operation of the unit outside the specified environment.
NO IMPLIED WARRANTIES
This warranty is exclusive. There are no other warranties expressed or implied.
LIMITATION OF LIABILITY
Pulmonetic Systems shall not be liable for loss of profits, loss of use consequential
damages, or any other claim based on breach of warranty. Pulmonetic Systems’ liability for
damages of any kind shall be limited to the purchase price of the defective unit.

p/n 18603-001, Rev. C LTV®1200/1150 Ventilator Service Manual Page iii
Notices
The LTV®1200/1150 ventilator complies with limitations as specified in IEC 601-1-2 for
Medical Products. It does however, use and radiate radio frequency energy.
The function of this machine may be adversely affected by the operation of other nearby
equipment, such as high frequency surgical diathermy equipment, short-wave therapy
equipment, defibrillators or MRI equipment.
European Regulatory Requirements per 93/42/EEC Medical Device Directives
Pulmonetic Systems European Representative for vigilance reporting within the European Community
is:
MediMark® Europe Sarl.
11, rue Emile Zola. BP 2332
F-38033 Grenoble Cedex 2. France
Tel: [phone]
Fax: [phone]
E-mail: [email protected]
Any product malfunctioning issues that fall under Medical Device Directives Essential Requirements
should be directed to MediMark.
Notice to Users
Unsafe Operation - Servicing the LTV®1200/1150 ventilator without a complete and
thorough understanding of its attributes may result in unsafe operating conditions. It is
important that this manual be read and understood in its entirety before servicing the
ventilator.
Warnings and Cautions Section - Read the section on Warnings and Cautions carefully
before attempting to service or operate the LTV®1200/1150 ventilator. General warnings
and cautions which apply any time you use the ventilator are listed in the front of this
manual. General and specific warnings and cautions also appear throughout the text where
they are most meaningful.
Use and Maintenance - Any questions regarding installing, setting up, operating, or
maintaining the LTV®1200/1150 ventilator, should be directed to a service technician who
has been trained and certified by Pulmonetic Systems to service the LTV®1200/1150
ventilator or Pulmonetic Systems using the contact information at the front of this manual.

Page iv LTV®1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
Contents
Notices .........................................................................................................................................iii
Chapter 1 - Introduction.................................................................................. 1-1
Getting Assistance ....................................................................................................................1-1
Operator’s Safety Information ...................................................................................................1-2
Warnings ...................................................................................................................................1-3
Cautions ....................................................................................................................................1-4
Symbols.....................................................................................................................................1-5
Chapter 2 - Ventilator Checkout Tests .......................................................... 2-1
Alarm Test .................................................................................................................................2-3
Display Test...............................................................................................................................2-4
Control Test...............................................................................................................................2-6
Leak Test...................................................................................................................................2-8
Vent Inop Alarm Test ..............................................................................................................2-10
Exit ..........................................................................................................................................2-11
Chapter 3 - Real-Time Transducer Data ........................................................ 3-1
Chapter 4 - Cleaning, Disinfecting and Sterilizing........................................ 4-1
Cleaning the Ventilator..............................................................................................................4-1
Cleaning or Replacing the Fan Filter......................................................................................... 4-2
Cleaning or Replacing the Inlet Filter........................................................................................4-3
Cleaning or Replacing the O2Inlet Filter (LTV® 1200 Only)......................................................4-4
Cleaning the Exhalation Valve and Reusable Patient Circuit ...................................................4-6
Chapter 5 - Preventative Maintenance........................................................... 5-1
Recommended Maintenance Schedule ....................................................................................5-1
Before Initial Use.......................................................................................................................5-2
Storage Maintenance ................................................................................................................5-2
Daily Maintenance.....................................................................................................................5-2
Monthly Maintenance ................................................................................................................5-2
10,000 Hour / 2 Year Maintenance ...........................................................................................5-3
30,000 Hour Maintenance / 6 Year Maintenance .....................................................................5-3
Chapter 6 - Maintenance & Calibration.......................................................... 6-1
Operating Theory ......................................................................................................................6-1
Pneumatic Schematic Detail .................................................................................................6-3
Vent Maintenance .....................................................................................................................6-4
Entering Vent Maintenance Mode......................................................................................... 6-5
Vent Maintenance Entry Alarm .............................................................................................6-6
Calibration .................................................................................................................................6-6
Airway Pressure Calibration..................................................................................................6-7
Calibrate the Airway Pressure Transducers .........................................................................6-9
Flow Differential Calibration ................................................................................................6-10
Valve Differential Calibration...............................................................................................6-13
PEEP Pilot Pressure Transducer Calibration .....................................................................6-16
O2Inlet Pressure Calibration (LTV®1200 Only) .................................................................6-17
Motor Drive Calibration .......................................................................................................6-19
Measure Turbine Speed (T/S) ............................................................................................6-21

p/n 18603-001, Rev. C LTV®1200/1150 Ventilator Service Manual Page v
Vent Maintenance Exit........................................................................................................ 6-23
Calibration Worksheet ........................................................................................................ 6-24
Flow Valve Calibration ............................................................................................................ 6-25
Flow Valve Calibration Worksheet ..................................................................................... 6-28
Servo....................................................................................................................................... 6-29
Solenoid.................................................................................................................................. 6-30
Step Test ................................................................................................................................ 6-31
Watchdog Test........................................................................................................................ 6-32
Configuration .......................................................................................................................... 6-33
Model Selection ...................................................................................................................... 6-34
Flow Valve Home Position...................................................................................................... 6-35
Temperature Compensation................................................................................................... 6-36
Configuration Menu Exit .........................................................................................................6-37
CLEAR.................................................................................................................................... 6-38
Vent Maintenance Menu Exit.................................................................................................. 6-39
Chapter 7 - Troubleshooting...........................................................................7-1
Displays and Buttons ................................................................................................................ 7-2
Ventilator Performance............................................................................................................. 7-7
Advanced Diagnostic Procedures .......................................................................................... 7-23
Advanced Vte Diagnostic Procedures................................................................................ 7-23
Advanced FiO2Diagnostic Procedures (LTV®1200 Only)................................................. 7-27
Power and Battery Operation ................................................................................................. 7-29
Alarms..................................................................................................................................... 7-32
Checkout Test Failures........................................................................................................... 7-40
Test Lung Operation ............................................................................................................... 7-43
Chapter 8 - Component Removal and Replacement.....................................8-1
Training and Authorization........................................................................................................ 8-1
Service Record ......................................................................................................................... 8-1
Tools ......................................................................................................................................... 8-2
Calling for Assistance ............................................................................................................... 8-2
Before removing the back panel............................................................................................... 8-3
Before replacing the back panel ............................................................................................... 8-3
After performing any maintenance ........................................................................................... 8-3
Boots, Protective....................................................................................................................... 8-4
Boots, Temporary Removal.................................................................................................. 8-5
Boots, Permanent Removal.................................................................................................. 8-7
Boots, Reinstallation...........................................................................................................8-10
Boots, New Installation ....................................................................................................... 8-13
LTM/LTV mounting assembly installation and removal.......................................................... 8-16
Current Model LTM Instructions ......................................................................................... 8-17
LTM mounting assembly permanent removal (current LTM) ............................................. 8-18
LTM mounting assembly re-installation (current LTM)....................................................... 8-19
LTM mounting assembly new installation (current LTM).................................................... 8-20
LTM/LTV® mounting bracket (earlier model LTM) .............................................................. 8-22
LTM/LTV mounting bracket temporary removal (earlier model LTM) ................................ 8-23
LTM/LTV mounting bracket permanent removal (earlier model LTM) ............................... 8-24
LTM/LTV®mounting bracket, reinstallation (for earlier model LTM) .................................. 8-25
LTM/LTV®mounting bracket new installation (earlier model LTM) .................................... 8-26

Page vi LTV®1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
Back Panel ..............................................................................................................................8-28
Back Panel, Removal..........................................................................................................8-28
Back Panel, Reinstallation ..................................................................................................8-29
Internal Flexible Tubing...........................................................................................................8-33
Tubing Overview Diagram ..................................................................................................8-33
Tubing Table .......................................................................................................................8-34
Solenoid Manifold Tube Routing Table...............................................................................8-35
Solenoid Mount Tube Routing Table ..................................................................................8-36
Tubing Removal/Replacement Instructions ........................................................................8-37
Accumulator ............................................................................................................................8-53
Alarm Sounder Assembly........................................................................................................8-55
Analog Board Assembly..........................................................................................................8-57
External Inlet Filter ..................................................................................................................8-62
Fan Assembly..........................................................................................................................8-63
Cleaning the Fan Filter........................................................................................................8-64
Flow Valve Assembly ..............................................................................................................8-65
Front Panel..............................................................................................................................8-71
Internal Battery Pack...............................................................................................................8-77
Caring for the Internal Battery.............................................................................................8-80
Internal Inlet Filter....................................................................................................................8-81
Main Board Assembly .............................................................................................................8-82
Memory Board.........................................................................................................................8-88
Motor Board Assembly............................................................................................................8-90
O2Blender Assembly / O2Block .............................................................................................8-92
O2Blender Filter (LTV®1200 only) .......................................................................................8-100
Power Board Assembly.........................................................................................................8-101
Right and Left Soft Side Panels ............................................................................................8-113
Rotary Switch (Set Value Knob) Assembly...........................................................................8-114
Solenoid Manifold Assembly .................................................................................................8-116
Solenoid Manifold Tube Routing Table.................................................................................8-116
Solenoid Mount Assembly.....................................................................................................8-122
Thermo Conductive Motor Board Heatsink Pad ...................................................................8-125
Thermo Conductive Turbine Pad ..........................................................................................8-126
Turbine Manifold....................................................................................................................8-127
Chapter 9 - Final Checkout Test..................................................................... 9-1
Checkout Test Selection ...........................................................................................................9-1
General Checkout .....................................................................................................................9-2
General Checkout Worksheet...............................................................................................9-8
Power Checkout......................................................................................................................9-11
Power Checkout Worksheet ...............................................................................................9-13
Performance Checkout ...........................................................................................................9-15
Performance Checkout Worksheet ..................................................................................... 9-23
12 Hour Burn-in .......................................................................................................................9-28
12 Hour Burn-in Worksheet ................................................................................................9-30
Appendix A - Ventilator Specifications .........................................................A-1
Appendix B - Glossary....................................................................................B-1
Appendix C - Service Record Form ...............................................................C-1

p/n 18603-001, Rev. C LTV®1200/1150 Ventilator Service Manual Page vii
Appendix D - Event Trace .............................................................................. D-1
Appendix E - Reference Information ............................................................. E-1
Conversion Factors................................................................................................................... E-1
Extended Features Map ...........................................................................................................E-2
External Accessories Screw Location, Type and Length ......................................................... E-5
Parts, Replacement .................................................................................................................. E-7
Settings, Dip Switch................................................................................................................ E-10
Settings, Front Panel Controls and Extended Features ......................................................... E-11
Tools, Required ...................................................................................................................... E-12
Transducer Calibration, Acceptable A/D Counts .................................................................... E-16
Torque Values ........................................................................................................................ E-17
Appendix F - Index...........................................................................................F-1

p/n 18603-001, Rev. C LTV®1200/1150 Ventilator Service Manual Page 1-1
Chapter 1 - I NTRODUCTION
This manual describes how to perform routine maintenance, troubleshooting, and repairs on
the LTV®1200/1150 ventilator. It is designed for use by service personnel who have been
trained and authorized by Pulmonetic Systems. Do not perform any of the procedures in
this manual unless you are trained and authorized for service on LTV®1200/1150
ventilators.
This manual contains what you need to know to:
1) Perform preventative maintenance.
2) Calibrate the ventilator.
3) Perform routine troubleshooting.
4) Remove and replace major components of the ventilator.
See the LTV®1200 Ventilator Operator's Manual (P/N 18247-001) or the LTV®1150
Ventilator Operator’s Manual (P/N 19159-001) for information on setting up and operating
the ventilator.
Getting Assistance
If a problem occurs while maintaining the LTV®1200/1150 ventilator or if you require
additional information, contact a service technician who has been trained and certified by
Pulmonetic Systems to service the LTV®1200/1150 ventilator or Pulmonetic Systems at:
Cardinal Health
Pulmonetic Systems
17400 Medina Rd., Suite 100
Minneapolis, Minnesota 55447-1341
Phone: [phone]
Office Fax: [phone]
Customer Care Center Phone: [phone], ext. 2
Customer Care Center Fax: [phone]
Sales/Marketing E-mail: [email protected]
Customer Care Center E-mail: [email protected]
Pulmonetic Systems Website: http://www.pulmonetic.com

Page 1-2 LTV®1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
Operator’s Safety Information
All Operators must read and understand the following information about Warning, Caution
and Note statements before operating the LTV®1200/1150 ventilator.
General warnings and cautions which apply any time you use the ventilator are listed here.
General and specific warnings and cautions also appear throughout this manual where they
are most meaningful.
WARNING
“Warning” statements contain information about circumstances or practices that may cause
serious and undesirable results, or expose the patient or operator to danger.
CAUTION
“Caution” statements contain information about circumstances or practices that may result
in equipment damage.
NOTE
“Note” statements contain additional information to assist in the proper operation of the
ventilator.

p/n 18603-001, Rev. C LTV®1200/1150 Ventilator Service Manual Page 1-3
Warnings
WARNING
Ventilator Service and Repair - Only service technicians who have been trained and
certified by Pulmonetic Systems to service the LTV®1200/1150 ventilator are authorized to
perform repairs or maintenance on the LTV®1200/1150. Do not attempt to repair or replace
any part of the ventilator unless you are trained and certified to do so by Pulmonetic
Systems. Personal injury could result.
Fire or Explosion - Operation of the ventilator in the presence of flammable gases could
cause a fire or explosion. Under no circumstances is the ventilator to be operated when
explosive gases are present. The presence of nitrous oxide or flammable anesthetics
presents a danger to the patient and operator.
Untrained Personnel – Only properly trained personnel should operate the ventilator. The
LTV®1200/1150 ventilator is a restricted medical device designed for use by Respiratory
Therapists or other properly trained and qualified personnel under the direction of a
physician and in accordance with applicable state laws and regulations.
Unauthorized Parts or Accessories – Serious harm to the patient may result from the use
of unauthorized parts or accessories. Only items expressly approved by Pulmonetic
Systems may be used in conjunction with the LTV®1200/1150 ventilator.
Ventilator Checkout Tests – Be aware that gas is not delivered to the patient during these
tests. Disconnect the patient from the ventilator and ventilate using an alternative method
before running the Ventilator Checkout tests.
Ventilator Checkout and Maintenance Modes - The LTV®1200/1150 ventilator does not
deliver gas during the Ventilator Checkout mode (VENT CHECK) or Ventilator Maintenance
mode (VENT MTNCE) and should not be used to ventilate a patient during these tests.
Mounting Screw Use – Internal damage to the ventilator may result if wrong length
mounting screws are used to secure parts or accessories. Refer to the information
contained in Replacement Screws Kit, P/N 11149, to determine the appropriate accessories
mounting screws or accessories replacement screws to use when removing or exchanging
external accessories on an LTV®1200/1150 ventilator.

Page 1-4 LTV®1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
Cautions
CAUTION
Electrical Grounding –Loss of protective ground could result in electrical shock. Only use
the unmodified power supplies and cords supplied for the LTV®1200/1150 ventilator,
maintained in good condition and connected to a properly wired and grounded electrical
power outlet.
Fuse Fire Hazard – Replacement of existing fuses with fuses of different voltage or
electrical current ratings may cause a fire.
Storage Temperature - Storing the LTV®1200/1150 ventilator at temperatures above 60°C
(140°F) for long periods can damage the LTV®battery and cause battery duration to
degrade.
Patient Assist Call Connector – Do not apply more than 25V rms or 32VDC to the Patient
Assist Call connector.
CLEAR Function Cautions - The CLEAR function should be used with great care as once
a section of the memory is cleared, all data in that section of memory is lost and it cannot be
automatically restored.
Electronic and Mechanical Parts - The LTV®1200/1150 ventilator contains delicate
electronic and mechanical parts that must be handled properly to avoid damage. Follow the
instructions given in this manual carefully and make sure to observe all instructions.
Opening the ventilator - Always turn the ventilator OFF and remove the external power
before opening the ventilator case or attempting to service the ventilator.
Anti-static Precautions - Always wear a grounded anti-static wrist strap when handling the
ventilator with the case open. Electrostatic discharge can damage the internal electronics.
Verification of Operation - After opening the ventilator and performing any maintenance,
verify proper operation of the ventilator by performing the checks and calibrations
recommended in Chapter 9 - Final Checkout Test.
Ventilator Sterilization – To avoid irreparable damage to the LTV®1200/1150 ventilator, do
not attempt to sterilize it.
Cleaning Agents – To avoid damaging the ventilator’s plastic components and Front Panel,
do not use cleaning agents containing ammonium chloride, other chloride compounds, more
than 2% glutaraldehyde, phenols, or abrasive cleaners.
Ventilator Immersion - Do not immerse the ventilator in liquids.
High pressure air nozzle – Only a low-pressure air nozzle with flow less than 10 liters per
minute should be used around the ventilator. High pressure can damage the ventilator, in
particular the differential pressure ports.
Front Panel – Do not pour or spray liquids onto the Front Panel.
Care of Bacterial Filters – If bacterial filters are used in conjunction with the LTV®
1200/1150 ventilator, comply with all recommended care procedures as specified by the
filter manufacturer.
Wet or Damp Filters - Do not install any wet or damp filters into the LTV®1200/1150
ventilator. This could damage the ventilator.
Software Version – Never install a version of software lower than that originally installed in
the ventilator.Erroneous operation may result from use of incompatible software. LTV®
ventilator software is generally designed to be backwards-compatible.

p/n 18603-001, Rev. C LTV®1200/1150 Ventilator Service Manual Page 1-5
Symbols
Symbol Compliance1Title Application
ISO 3864
(Prev. IEC 348)
Symbol No. B.3.1
Caution (refer to
accompanying
documents)
Direct the user to the instruction
manual where it is necessary to follow
certain specified instructions where
safety is involved.
IEC 417
Symbol No.
417-IEC-5016
Fuse Indicates the location of fuses.
IEC 417
Symbol No.
417-IEC-5035
Output Identifies an output terminal when it is
necessary to distinguish between
inputs and outputs.
IEC 417
Symbol No.
417-IEC-5019
Protective earth
(ground)
To identify any terminal which is
intended for connection to an external
protective conductor for protection
against electric shock in case of a fault
or the terminal of a protective earth
(ground) electrode.
IEC 417
Symbol No.
417-IEC-5333
Type BF equipment. To mark type BF equipment complying
with IEC Publication 601.
IEC 417
Symbol No.
417-IEC-5031
Direct Current Indicates on the rating plate that the
equipment is suitable for direct current
only; to identify relevant terminals.
IEC 417
Symbol No.
417-IEC-5032
Alternating current Indicates on the rating plate that the
equipment is suitable for alternating
current only; identifies relevant
terminals.
IEC 417
Symbol No.
417-IEC-5172
Class II equipment To identify equipment meeting safety
requirements specified for Class II
equipment.
IEC 60417
Symbol No.
5182
Sound; audio Identifies controls or terminals related
to audio signals.
Directive
2002/96/EC
Waste Container To identify Waste Electrical and
Electronic Equipment (WEEE) that is
not to be disposed of as unsorted
municipal waste and is to be collected
separately.
1Reference IEC Medical Electrical Equipment, 2nd. Edition 1988

Page 1-6 LTV®1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C

p/n 18603-001, Rev. C LTV®1200/1150 Ventilator Service Manual Page 2-1
Chapter 2 - V ENTILATOR C HECKOUT T ESTS
This chapter details test procedures that are initiated through the Vent Check menu and
used to verify the proper operation of the LTV®1200/1150 ventilator. These checkout tests
are to be performed before using the ventilator on a patient and in accordance with
recommended periodic maintenance and testing of the ventilator. See Chapter 5 -
Preventative Maintenance.
The checkout test procedures are:
Test Test used to:
Alarm Test Verify that the audible alarm is working correctly.
Display Test Verify that the ventilator displays are working correctly.
Control Test Verify that the ventilator buttons and the Set Value knob are
working correctly.
Leak Test Test the patient circuit for leaks.
Vent Inop Alarm Test Verify that the Vent Inop alarm is working correctly.
The Vent Check Menu is set up as follows:
VENT CHECK
ALARM
DISPLAY
CONTROL
LEAK
EXIT
WARNING
Ventilator Checkout and Maintenance Modes - The LTV®1200/1150 ventilator does not
deliver gas during the Ventilator Checkout mode (VENT CHECK) or Ventilator Maintenance
mode (VENT MTNCE) and should not be used to ventilate a patient during these tests.

Page 2-2 LTV®1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
To enable the ventilator checkout menu:
To enter the ventilator checkout (VENT CHECK) menu, a special power on sequence is
required.
1) Disconnect the patient from the ventilator and ventilate using an alternative method.
2) With the ventilator off, connect the AC adapter to the ventilator and plug it in to a valid
AC power source. Verify that the External Power and Charge Status LEDs are
illuminated or flashing.
3) Press and hold down Select. While holding Select, press On/Standby to turn the
ventilator on.
•REMOVE PTNT is displayed; if it does not display, repeat steps 2 through 4.
•An audible alarm (alternating on/off tone) sounds while REMOVE PTNT is
displayed.
4) Clear the alarm by pressing the Silence Reset button.
•The audible alarm silences, and the display changes from REMOVE PTNT to
VENT CHECK.
To enter the Ventilator Checkout menu:
1) Press Select.
2) The first Ventilator Checkout Test, ALARM is displayed.

p/n 18603-001, Rev. C LTV®1200/1150 Ventilator Service Manual Page 2-3
Alarm Test
The alarm test verifies that the audible alarm is working correctly.
To run the alarm test:
1) Press Select while ALARM is displayed.
2) Verify that the audible alarm sounds. When the alarm has sounded for at least 2
seconds, press Select again.
•The audible alarm is silenced and the next menu item is displayed.
3) Verify a confirming audible chirp sounds after the alarm is silenced.
If the ventilator fails the alarm test, see Chapter 7 - Troubleshooting for more information.
NOTE
Although the LTV® 1200 Front Panel is shown, the test is applicable to the LTV®1150
Ventilator.

Page 2-4 LTV®1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
Display Test
At the end of the alarm test, DISPLAY shows in the LED display window. The display test
verifies that the ventilator displays are working correctly.
To run the display test:
1) Press Select while DISPLAY is showing.
2) All segments of the 7-segment control displays; all dots of the dot-matrix window
displays and all LEDs are illuminated.
3) To end the display test, press Select again and the next menu item is displayed.
NOTE
The displays for the External Power, Vent Inop, and Charge Status LEDs are not tested
by the display test.
•The External Power and Charge Status LEDs are tested when the AC adapter is
connected to the ventilator (see page 2-2).
•The Vent Inop LED is tested during the Vent Inop alarm test (see page 2-10).
•Although the LTV®1200 Front Panel is shown, the test is applicable to the LTV®1150
Ventilator.

p/n 18603-001, Rev. C LTV®1200/1150 Ventilator Service Manual Page 2-5
Displays illuminate in the following colors:
Display Color Display Color
Airway Pressure Display Green Assist/Control Mode LED Green
Display Window Red SIMV/CPAP Mode LED Green
Breath Rate Green NPPV Mode LED Green
Tidal Volume Green Inspiratory / Expiratory Hold LED Green
Pressure Control Green Manual Breath LED Green
Inspiratory Time Green Low Pressure O2Source LED2 Green
Pressure Support Green Control Lock LED Green
O2% (O2Flush)2Green PEEP Green
Sensitivity Green Patient Effort LED Green
High Pressure Limit alarm Red External Power LED Not tested
Low Pressure alarm Red Charge Status LED Not tested
Low Minute Volume alarm Red Battery Level LED Amber
On/Standby LED Green Vent Inop LED Not tested
Volume Mode LED Green Silence Reset LED Red
Pressure Mode LED Green
If the ventilator fails the display test, see Chapter 7 - Troubleshooting for more information.
2Available on the LTV®1200 Only.

Page 2-6 LTV®1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
Control Test
At the end of the display test, CONTROL shows in the LED display window. The control test
is used to verify that the ventilator buttons and the Set Value knob are working correctly.
To run the control test:
1) Press Select while CONTROL is displayed.
2) SELECT is displayed in the display window.