Maxtec MAXO2 OM-25ME, MAXO2 OM-25ME-L Instructions Manual

OXYGEN

MONITOR

MODEL

OM-25ME

(OM-25ME-L)

USER’S GUIDE

AND

OPERATING

INSTRUCTIONS

manufactured by:

R213M05 Rev. H

®

®

i

Manufacturer: Maxtec, Inc

European Representative

Airox S.A.
Parcd’activities Pau-Pyrenees
L’echangeur BP833
64008 PAU Cedex
France

ii

PREFACE

This manual describes the function, operation and maintenance of the
Maxtec Model OM-25ME and OM-25ME-L oxygen monitors. Notes are
included where differences may occur between the two monitors. As
members of Maxtec's MAXO

2 line of oxygen analyzers and monitors, the

OM-25ME utilizes the Maxtec MAX-250E oxygen sensor and is
engineered for fast response, maximum reliability and stable
performance. The OM-25ME is designed primarily for continuous
monitoring of oxygen levels delivered by medical oxygen delivery
equipment and respiratory care systems. Adjustable high and low level
alarm setpoints make the OM-25ME ideal for use in neo-natal,
anesthesia, and respiratory care.

THANK YOU

Thank you for your purchase of a Maxtec MAXO2 oxygen monitor. We
appreciate the time and energy you invest in selecting the equipment best
suited to your needs. As repayment, we are supplying you with a reliable,
high-quality instrument that, with proper care and operation, will provide
you with years of exceptional service. We also encourage your
comments or suggestions as to how our equipment, in any way, can
better serve your needs. Please feel free to write, FAX or e-mail us at the
address on the back of this manual c/o the Maxtec Marketing
Department.

NOTE: In order to obtain optimum performance from your MAXO

2



monitor, all operation and maintenance must be performed in
accordance with this manual. Please read the manual thoroughly
before using the monitor and do not attempt any repair or procedure
that is not described herein. Maxtec cannot warrant any damage
resulting from misuse, unauthorized repair or improper maintenance
of the instrument.

WARNING

The sensor of the MAXO

2 Oxygen Monitor (MAXO2) has been tested with

various anesthesia gases including Nitrous oxide, Halothane, Isoflurane,
Enflurane, Sevoflurane and Desflurane and found to have acceptable low
interferance, the device in its entirety (including electronics) is not suitable
for use in the presense of a flammable anesthetic mixture. Only the
threaded sensor face, flow diverter, and “T” adapter may be allowed to

contact such a gas mixture.

!

iii

To avoid explosion, do not operate the Oxygen monitor in the presence of
flammable anesthetics or in an atmosphere of explosive gases. Operating
the oxygen monitor in flammable or explosive atmospheres may result in
fire or explosion.

Never allow an excess length of cable near the patient’s head or neck, as
such could result in strangulation. Secure excess cable to the bed rail or
suitable object.

Never use a MAXO

2 monitor with a cable that appears worn, cracked or

has damaged insulation
Before use, all individuals who will be using the MAXO2 must become

thoroughly familiar with the information contained in this Operation
Manual. Strict adherance to the operating instructions is necessary for
safe effective product performance. This product will perform only as
designed if installed and operated in accordance with the manufacturer’s
operating instructions.

Use only genuine Maxtec accessories and replacement parts. Failure to
do so may seriously impair the monitor’s performance. Repair or
alteration of the MAXO

2 beyond the scope of the maintenance

instructions or by anyone other than an authorized Maxtec service person
could cause the product to fail to perform as designed.

Calibrate the MAXO

2 weekly when in operation and if enviromental

conditions change significantly. (ie, Temperature, Humidity, Barometric
Pressure. --- Refer to Calibration section of this manual).

Use of the MAXO

2 near devices that generate electrical fields may cause

erratic readings.
If the MAXO

2 is ever exposed to liquids (from spills or immersion) or to

any other physical abuse, turn the instrument OFF and then ON. This will
allow the unit to go through its self test and make sure everything is
operating correctly.

Never autoclave, immerse or expose the MAXO

2 (including sensor) to

high temperatures (>70oC). Never expose the device to pressure,
irradiation vacuum, steam, or chemicals.

To protect the unit from potential leaky battery damage always remove
batteries when the unit is going to be stored (not in use for 1 month) and
replace dead batteries with recognized name brand AA Alkaline batteries.

iv

The OM-25ME-L™ oxygen monitor has been manufactured with a low
alarm setting adjustable down to 15% This change is within the
guidelines set forth in ASTM Specification F1462-93. The OM-25ME-L™
is labeled to indicate this feature.

Classification:
Protection against electric shock: Internally powered equipment.
Protection against water: Ordinary equipment
Mode of Operation: Continuous
Sterilization: See section 6
Safety of application in the presensence of a flammable aesthetic
mixture: See section 8.1

FAILURE TO COMPLY WITH THESE WARNINGS AND CAUTIONS
COULD RESULT IN INSTRUMENT DAMAGE AND POSSIBLY
JEOPARDIZE THE WELL BEING OF THE PATIENT AND/OR HEALTH
CARE PROFESSIONAL.

v

TABLE OF CONTENTS

1. SYSTEM OVERVIEW ........................................... 1

1.1 Base Unit Description .............................. 1

1.2 Components Description ........................ 2

1.3 MAX-250E Oxygen Sensor .......................... 6

2. SET-UP PROCEDURE ......................................... 7

2.1 Battery Installation ................................... 7

2.2 Calibrating the MAXO

2

 Monitor ................. 7

2.2.1 Before You Begin ............................. 7

2.2.2 To Calibrate the MAXO

2

 Monitor ... 8

2.2.3 Automatic Calibration to Room Air 9

2.2.4 Factors Influencing Calibration ...... 10

3. OPERATING INSTRUCTIONS ............................ 12

3.1 Alarm Setting Procedure ........................ 12

3.1.1 Low Alarm Setting ........................ 12

3.1.2 High Alarm Setting ....................... 12

3.2 Basic Operation ....................................... 13

3.3 Alarm Conditions ..................................... 13

4. SENSOR REMOVAL AND REPLACEMENT ........ 14

5. PROBLEM SOLVING ............................................. 15

6. CLEANING AND MAINTENANCE ......................... 15

7. SPECIFICATIONS ................................................ 16

7.1 Base Unit Specifications ......................... 16

7.2 Sensor Specifications ............................. 16

8. APPLICATIONS .................................................. 17

8.1 Exposure to Anesthetic Gases ............... 17

8.2 Calibration Techniques in Pressurized

Systems .................................................... 17

8.3 Calibration Errors .................................... 18

8.4 Atmospheres of High Humidity ............... 18

9. SPARE PARTS AND ACCESSORIES .................... 20

10.WARRANTY ......................................................... 21

1. SYSTEM OVERVIEW

1.1 Base Unit Description

The MAXO2 (Model OM-25ME) provides unparalleled performance and
reliability, due to an advanced design that includes the following features
and operational benefits.

• Fast-responding, oxygen-specific, galvanic sensor that achieves
90% of final value in approximately 15 seconds at room temperature.

• Extra-life oxygen sensor of approximately 900,000 O

2 percent hours

(minimum 2 years in most applications).

• External probe with 10 ft., extendible cable and diverter fitting for
standard 15 mm "T" adapter.

• Operation using 2 AA alkaline batteries (2 x 1.5 volts) for
approximately 3000 hours of performance in typical usage (not in
alarm conditions). For extra extended long life, 2 AA lithium
batteries may be used.

• Durable, compact case that weighs less than 1 pound and
permits comfortable, hand-held operation.

• Large, easy-to-read, 3

1

/

2-digit LCD display for readings in the 0-100%

range.

• Adjustable high-level and low-level alarming capability with flashing
LED and audible indication of alarm conditions.

• Simple operation and calibration using quick-calibrate key functions.

• Self-diagnostic check of analog and microprocessor circuitry.

• Low battery indication.

1

2

1.2 Components Description (please refer to page 3)

LCD Readout

3 1/2-Digit Display- The 3 1/2-digit liquid crystal display (LCD)

provides direct readout of oxygen concentrations in the range of
0-100%. It also displays "CAL" when the calibration mode is
entered.

"%" Sign- In the calibration mode, the "%" sign flashes every
second.

Low Battery Indicator- The low battery indicator appears on
the LCD display when the power supply voltage drops below
acceptable limits. When the "LOW BAT" icon is visible, batteries
should be replaced immediately.

LOCKED Status Indicator- The presence of the "LOCKED"
icon on the LCD readout is an indication that the unit is in its
normal "LOCKED" state. The unit must be unlocked, using the
LOCK key, in order to be calibrated or to change the high and low
alarm settings.

Low Alarm Indicator- The low alarm setting is displayed at all
times just below the "LOW" icon on the LCD readout. The
indicated value represents the oxygen percentage at which the
low alarm will be activated. In the low alarm set mode, the
"LOW" icon will flash at a 1 second rate. In a low alarm
condition, the low alarm value will flash in conjunction with the
low alarm light emitting diode (LED).

High Alarm Indicator- The high alarm setting is displayed at all
times just below the "HIGH" icon on the LCD readout. The
indicated value represents the oxygen percentage at which the
high alarm will be activated. In the high alarm set mode, the
"HIGH" icon will flash at a 1 second rate. In a high alarm
condition, the high alarm value will flash in conjunction with the
high alarm LED.

Threaded Mounting Bushing- Threads to Table Top Swivel
Stand. Also may be used with many third party camera mounting
accessories.

A

2

3

4

5

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6

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