Masimo NomoLine ISA CO2 User manual

Service Manual
NomoLine® ISA™ Maintenance Kit

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The NomoLine ISA Maintenance Kit Service Manual provides the necessary information for
proper service and maintenance of NomoLine ISA devices. There may be information
provided in this Service Manual that is not relevant for your system.
Notice: Purchase or possession of this device does not carry any express or implied license to
use with replacement parts which would, alone or in combination with this device, fall within
the scope of one of the relating patents.
Masimo Corporation
52 Discovery
Irvine, CA 92618, USA
Tel.: [phone]
Fax.: [phone]
www.masimo.com
EU authorized representative for Masimo Corporation:
MDSS GmbH
Schiffgraben 41
D-30175 Hannover, Germany
Patents: www.masimo.com/patents.htm
Masimo®, ®, and NomoLine® are registered trademarks of Masimo Corporation.
ISA™ is a trademark of Masimo Corporation.
All other trademarks and registered trademarks are property of their respective owners.
© 2020 Masimo Corporation

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Service Manual, NomoLine ISA
Maintenance Kit
This Service Manual provides information on how to perform basic service and maintenance
procedures. The intended readers of this manual are service technicians responsible for host
systems incorporating the NomoLine ISA system.
•ISA CO2
•ISA AX+
•ISA OR+
Refer to the appropriate NomoLine ISA Operator’s Manual for comprehensive list of safety
information, warnings, and cautions.

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Contents
Service Manual, NomoLine ISA Maintenance Kit ----------------------------------------------------- 3
About This Manual-------------------------------------------------------------------------------------------7
Safety Information, Warnings and Cautions ----------------------------------------------------------- 9
Chapter 1: Description ------------------------------------------------------------------------------------ 11
Features-------------------------------------------------------------------------------------------------- 11
Maintenance Kit Components ----------------------------------------------------------------------- 14
Chapter 2: Maintenance Procedures ------------------------------------------------------------------- 17
Cleaning ------------------------------------------------------------------------------------------------- 17
Operational Check -------------------------------------------------------------------------------------18
Zeroing---------------------------------------------------------------------------------------------------18
Maintenance Kit Procedures -------------------------------------------------------------------------19
Chapter 3: Troubleshooting------------------------------------------------------------------------------ 31
Troubleshooting NomoLine ISA Devices-----------------------------------------------------------31
Chapter 4: Specifications-------------------------------------------------------------------------------- 33
Symbols------------------------------------------------------------------------------------------------- 33
Chapter 5: Warranty Information---------------------------------------------------------------------- 35
Repair Policy ------------------------------------------------------------------------------------------- 35
Return Procedure-------------------------------------------------------------------------------------- 35
Contacting Masimo ----------------------------------------------------------------------------------- 35
Index -------------------------------------------------------------------------------------------------------- 39

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About This Manual
This Service Manual may contain technical information regarding troubleshooting, cleaning,
electrical safety testing, functional verification and other pertinent service guidance. Keep
this Service Manual in a convenient location for ready reference during service and
maintenance. This Service Manual is intended for technical service, repair and biomedical
personnel who maintain, troubleshoot and service this product as needed.
Important safety information relating to general servicing of NomoLine ISA devices appears
in this manual. Read and follow any warnings, cautions, and notes presented throughout this
manual. The following are explanations of warnings, cautions, and notes.
A Warning is given when actions may result in a serious outcome (for example, injury, serious
adverse effect, death) to the user.
WARNING: This is an example of a warning statement.
A Caution is given when any special care is to be exercised by the or user to avoid injury,
damage to this device, or damage to other property.
CAUTION: This is an example of a caution statement.
A Note is given when additional general information is applicable.
Note: This is an example of a note.
A Service Warning is given when service and maintenance actions may result in a serious
outcome (for example, injury, serious adverse effect, and death) to the patient or user. The
following is an example of a warning:
Service Warning: This is a sample of a service warning statement.
Authorized Service Personnel: Authorized Service Personnel is a user the manufacturer has
deemed authorized to service products covered under the manufacturer’s warranty. Service
conducted by anyone other than an authorized service personnel voids the warranty. The
authorized service personnel are allowed to only perform tasks outlined in this service
manual.

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Safety Information, Warnings and
Cautions
WARNING: This manual is intended for use by authorized service personnel only.
WARNING: DO NOT service or make any modifications to the NomoLine ISA Maintenance Kit
other than those described in this manual.
WARNING: Always ensure that the device is disconnected from the host device prior to
cleaning and servicing, unless otherwise noted.
WARNING: DO NOT use any device that appears to be damaged. Contact Masimo Technical
Support in regards to any device that appears damaged.

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Chapter 1: Description
Features
NomoLine ISA CO2/AX+ Interface
The Input Connector is located on the front of the NomoLine ISA CO2and AX+ Sidestream Gas
Analyzers. The Exhaust Port is located on the rear of the NomoLine ISA CO2and AX+
Sidestream Gas Analyzers.
Front View
Figure 1-1. Front view of NomoLine ISA CO2and AX+ Sidestream Gas Analyzers. [1] Input
Connector
1 NomoLine Capnography Input Connector
Allows connection to NomoLine® for capnography
measurements. Light Emitting Gas Inlet (LEGI) Indicator
provides visual indications of capnography status. See LEGI
Indicator on page 13.
Note: CO2is shown, AX+ is similar.
Rear View
Figure 1-2. Rear view of NomoLine ISA CO2and AX+ Sidestream Gas Analyzer. [2] Exhaust
Port
2. Capnography Gas Sample Exhaust Port
Exhaust port for gas samples.
Note: CO2is shown, AX+ is similar.

NomoLine ISA Service Manual Chapter 1: Description
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ISA OR+ Interface
The Input Connector is located on the front of the ISA OR+ Sidestream Gas Analyzer. The
Exhaust Port is located on the rear of the ISA OR+ Sidestream Gas Analyzer.
Front View
Figure 1-3. Front view of ISA OR+ Sidestream Gas Analyzer. [1] Input Connector
1 Capnography Input Connector
Allows connection for capnography measurements.
Light Emitting Gas Inlet (LEGI) Indicator provides
visual indications of capnography status. See LEGI
Indicator on page 13.
Rear View
Figure 1.4. Rear view of ISA OR+ Sidestream Gas Analyzer. [2] Exhaust Port
2. Capnography Gas Sample Exhaust Port
Exhaust port for gas samples.

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LEGI Indicator
The Light Emitting Gas Inlet (LEGI) Indicator provides visual indications of capnography
status. The indicator illuminates in different colors depending on the state of the device. The
LEGI Indicator is located around the capnography connector on the front of the device.
Note: CO2is shown, AX+ and OR+ are similar.
LEGI Indicator Alarm Priority Status
Steady green light None Capnography monitoring in operation and OK
Blinking green light None Zeroing in progress. See Zeroing on page 18.
Steady blue light None Anesthetic agent present
Steady red light High ISA error
Blinking red light High Sampling line occlusion
Note: Without a NomoLine sampling line connected, the LEGI Indicator will not illuminate.

NomoLine ISA Service Manual Chapter 1: Description
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Maintenance Kit Components
The maintenance kit is equipped with the following components:
Item Description Item Description
1Nomo Connector with tubing (connects
to the NomoLine ISA system Input
Connector)
5Tubing with ID 5.5 mm (7/32”)
connects to manual pressure gauge
meter
2Flow-check device with silicone tubing
(connects to NomoLine ISA system
Exhaust Port)
64-way stopcock lever
3Syringe 1 ml 73-way connector
4Tubing with ID 4.0 mm (5/32”) connects
to handheld digital manometer 8Nomo extension

NomoLine ISA Service Manual Chapter 1: Description
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Additional Equipment Required
The following components are not supplied by Masimo with the maintenance kit, and must
be purchased separately to perform the maintenance procedures:
Name Description Example
Manufacturer/PN*
Calibration Gas
Regulator Kit Gas regulator kit includes:
•Manometer with pressure indicator,
needle valve and rotameter
•ET tube with blue 15 mm male connector
•Luer lock plug
Note: The thread of the manometer is UNEF
7/16"-28 and it will fit GE Healthcare’s
calibration gas cylinder REF 755580/755583
and Philips M1662A
Masimo/900910
Calibration gas
cylinder for
NomoLine ISA CO2.
Calibration gas cylinder from GE Healthcare
(5% CO2 bal air) GE
Healthcare/755580
Calibration gas
cylinder for ISA
AX+/OR+
Calibration gas cylinder from GE Healthcare
(5% CO2 , 2% DES, 33% N2O, 55% O2 bal N2) GE
Healthcare/755583
Calibration gas
cylinder for ISA
AX+/OR+
Calibration gas cylinder from Philips (5% CO2,
2% DES, 43% N2O, 50% O2) Philips/M1662A
Manual Pressure
Gauge Meter Welch Allyn DS-55 Welch Allyn/DS55-300
Handheld Digital
Manometer HM28 Handheld digital manometer** Huber Instrumente AG/HM28
* Or equivalent.
** Accuracy specification: 0-500 mbar 0.1% FS

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Chapter 2: Maintenance Procedures
This chapter covers how to properly clean and perform maintenance procedures on NomoLine
ISA devices.
WARNING: Electrical shock and flammability hazard. Before cleaning the NomoLine ISA
device, always ensure that the device is disconnected from the host device.
CAUTION: Do not autoclave, pressure sterilize, or gas sterilize the NomoLine ISA device.
CAUTION: Do not soak or immerse the NomoLine ISA device in any liquid.
CAUTION: Use the cleaning solution sparingly. Allow unit to air dry. Excessive solution can
flow into the NomoLine ISA device and cause damage to internal components.
CAUTION: Do not touch, press, or rub the display panels with abrasive cleaning compounds,
instruments, brushes, rough-surface materials, or bring them into contact with anything that
could scratch the panel.
CAUTION: Do not use petroleum-based or acetone solutions, or other harsh solvents, to clean
the NomoLine ISA device. These substances attack the device’s materials and device failure
can result.
Cleaning
Cleaning of the ISA device should be performed at regular intervals or in accordance with
hospital, as well as local and governmental regulations.
See Safety Information, Warnings and Cautions.
WARNING: To avoid electric shock, always physically disconnect the ISA device and all
patient connections before cleaning.
CAUTION: To avoid permanent damage to the ISA device, do not use undiluted bleach (5% -
5.25% sodium hypochlorite) or any other cleaning solution not recommended.
Note: To prevent cleaning liquids and dust from entering the NomoLine capnography gas
analyzer through its sampling gas inlet connector, keep the sampling line fitted while
cleaning the ISA device.
NomoLine ISA CO2
The surfaces of the NomoLine ISA CO2device may be cleaned with the following solution(s):
•70% ethyl alcohol
•70% isopropyl alcohol
•Glutaraldehyde Solution
•Quaternary Ammonium Chloride Wipe
•0.5% Sodium Hypochlorite/Water Solution
•Accelerated Hydrogen Peroxide

NomoLine ISA Service Manual Chapter 2: Maintenance Procedures
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ISA AX+ and OR+
The surfaces of the ISA AX+ and OR+ devices may be cleaned with the following solution(s):
•70% ethyl alcohol
•70% isopropyl alcohol
Operational Check
The Operational check includes a Capnogram check and an Occlusion check. The Operational
check shall be performed according to the following procedure before the ISA device is taken
into operation or as part of troubleshooting.
1. Connect the ISA device cable to the host device connection port.
2. Connect a NomoLine sampling line to the input connector. See NomoLine ISA
CO2/AX+ Interface on page 11 or ISA OR+ Interface on page 12.
3. Power up the host device.
4. Check that the LEGI indicator shows a steady green light, indicating that ISA
device is ready for use. See LEGI Indicator on page 13.
Note: Without a sampling line connected, the LEGI Indicator does not illuminate.
5. Breathe briefly into the sampling line and check that a valid CO2waveform and
values are displayed on the host device screen.
6. Occlude (obstruct) the sampling line and wait for 10 seconds.
7. Check that an occlusion alarm is displayed and that the LEGI connector shows a
flashing red light.
Zeroing
NomoLine ISA CO2
The highly stable NomoLine ISA CO2spectrometer requires no regular zeroing. A room air
reference measurement is performed when the NomoLine is disconnected from the LEGI
connector, provided that CO2measurements are stable. This zeroing procedure is indicated by
the LEGI blinking green. See LEGI Indicator on page 13.
ISA AX+/OR+
The ISA gas analyzer needs from time to time to establish a zero reference level for the gas
measurements and the flow. The zero calibration is here referred to as “zeroing".
The ISA performs zeroing by switching the gas sampling from the respiratory circuit to
ambient air. The automatic zeroing is performed 1 to 3 times per day, and takes less than 10
seconds to perform.
During zeroing, if the exhaust gas is returned to the patient circuit, the returned gas level will
be different from the gas level at the sampling site.
The zeroing procedure is indicated by the LEGI blinking green. See LEGI Indicator on page 13.