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BAT
CAL
®
MAXO2 +A
®
MAXO2 +AE
®
2
+
MAXO A /AE USER’S GUIDE & OPERATING INSTRUCTIONS
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®
+
Before use, all individuals who will be using the MAXO2 must become thoroughly
familiar with the information contained in this Operation Manual. Strict adherence
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.
Classification
Protection against electric shock:
Protection against water:
Mode of Operation:
Sterilization:
Internally powered equipment.
IPX1
Continuous
See section 7.0
Use only genuine Maxtec® accessories and replacement parts. Failure to do so
may seriously impair the analyzer’s performance. Repair or alteration of the
Safety Labeling
®
+
The following symbols and safety labels are found on the MAXO2
:
®
+
MAXO2 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.
Attention, Consult ACCOMPANYING DOCUMENTS
®
+
Calibrate the MAXO2 weekly when in operation, or if environmental conditions
change significantly. (ie, Elevation, Temperature, Pressure, Humidity — refer to
Section 3.0 of this manual).
Off/On
®
+
Use of the MAXO2 near devices that generate electrical fields may cause erratic
readings.
Calibration
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If the MAXO2 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 to assure everything is operating correctly.
Found to meet the requirements of U.S. and Canadian nationally
recognized codes and standards listed or classified by ETL.
®
+
Never autoclave, immerse or expose the MAXO2 (including sensor) to high
temperatures (>70°C). Never expose the device to pressure, irradiation vacuum,
steam, or chemicals.
NOTE: Replace the batteries with recongnized high quality AA Alkaline or Lithium batteries.
NOTE: If the unit is going to be stored (not in use for 1 month), we recommend that you
remove the batteries to protect the unit from potential battery leakage.
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.
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TABLE OF CONTENTS
1.0 SYSTEM OVERVIEW
1.0 SYSTEM OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.1 Base Unit Description
1.1 Base Unit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
1.2 Component Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.3 Component Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
1.4 MAX-250+ Oxygen Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
®
+
The MAXO2 analyzer provides unparalleled performance and reliability due
to an advanced design that includes the following features and operational
benefits.
2.0 OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.1 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
• Extra-life oxygen sensor of approximately 900,000 O2 percent hours
(2-year warranty)
2.1.1 Protect Tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.1.2 Remove the Battery Ribbon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2.1.3 Automatic Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
®
2.2 Calibrating the MAXO2 + Oxygen Analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
• Durable, compact design that permits comfortable, hand-held operation
and easy to clean.
2.2.1 In Line Calibration (Flow Diverter - Tee Adapter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2.2.2 Direct Flow Calibration (Barb) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
• Operation using only two AA Alkaline batteries (2 x 1.5 Volts) for approxi-
mately 5000 hours of performance with continuous use. For extra extend-
ed long life, two AA Lithium batteries may be used.
3.0 FACTORS INFLUENCING ACCURATE READINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3.1 Elevation Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3.2 Temperature Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3.3 Pressure Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3.4 Humidity Effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
• Oxygen-specific, galvanic sensor that achieves 90% of final value in
approximately 15 seconds at room temperature.
4.0 CALIBRATION ERRORS AND ERROR CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
5.0 CHANGING THE BATTERIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
6.0 CHANGING THE OXYGEN SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
• Large, easy-to-read, 3 1/2-digit LCD display for readings in the 0-100%
range.
®
6.1 MAXO2 +A Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
• Simple operation and easy one-key calibration.
• Self-diagnostic check of analog and microprocessor circuitry.
• Low battery indication.
®
6.2 MAXO2 +AE Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
7.0 CLEANING AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
8.0 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
8.1 Base Unit Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
8.2 Sensor Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
• Calibration reminder timer that alerts the operator, using a calibration icon
on the LCD display, to perform a unit calibration.
®
9.0 MAXO2 + SPARE PARTS AND ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
9.1 Included With Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
9.2 Standard Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
9.3 Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
9.3.1 Optional Adapters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
9.3.2 Mounting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
9.3.3 Carrying Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
10.0 WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
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1.2 Component Identification
1.4 MAX-250+ Oxygen Sensor
The MAX-250+ oxygen sensor offers stability and extra life.
The MAX-250+ is a galvanic, partial pressure sensor that is specific to oxygen. It
consists of two electrodes (a cathode and an anode), a teflon membrane and an
electrolyte. Oxygen diffuses through the teflon membrane and immediately reacts
at a gold cathode. Concurrently, oxidation occurs electrochemically at the lead
anode, generating an electrical current and providing a voltage output. Electrodes
are immersed in a unique gelled weak acid electrolyte which is responsible for
the sensors long life and motion insensitive characteristic. Since the sensor is
specific to oxygen, the current generated is proportional to the amount of oxygen
present in the sample gas. When no oxygen is present, there is no electrochemi-
cal reaction and therefore, negligible current is produced. In this sense, the sen-
sor is self-zeroing.
FIGURE 1
1.3 Component Description
CAUTION: The Maxtec® MAX-250+ oxygen sensor is a sealed device containing a mild acid
electrolyte, lead (Pb), and lead acetate. Lead and lead acetate are hazardous waste
constituents and should be disposed of properly, or returned to Maxtec® for proper
disposal or recovery.
1. 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 – 105.0%
(100.1% to 105.0% used for calibration determination purposes). The
digits also display error codes and calibration codes as necessary.
CAUTION: Do not use ethylene oxide sterilization. Do not immerse the sensor in any
cleaning solution, autoclave or expose the sensor to high temperatures.
2. Low Battery Indicator - The low battery indicator is located at the top of the
display and is only activated when the voltage on the batteries is below a
normal operating level.
CAUTION: Dropping sensor can adversely affect its performance.
3. “%” symbol - The “%” sign is located to the right of the concentration
number and is present during normal operation.
2.0 OPERATING INSTRUCTIONS
2.1 Getting Started
4. Calibration symbol - The calibration symbol is located at the bottom of the
display and is timed to activate when a calibration is necessary.
5. ON/OFF Key - This key is used to turn the device on or off.
2.1.1 Protect Tape
6. Calibration Key - This key is used to calibrate the device. Holding the key
Prior to turning on the unit, a protective film covering the threaded sensor
face must be removed. After removing the film, wait approximately 20
for more than three seconds will force the device to enter a calibration mode.
minutes for the sensor to reach equilibrium.
CAUTION: The device will assume a percent oxygen concentration when calibrating. Be
sure to apply 100% oxygen, or ambient air concentration to the device during calibration
or the device will not calibrate correctly.
2.1.2 Remove the Battery Ribbon
A ribbon has been inserted between the two case halves to prevent a battery
connection. Remove the ribbon by pulling it completely out of the case. To
energize the unit tighten all three screws with the included Phillips screwdriver.
Sample Inlet Connection
This is the port at which the device is connected to determine oxygen concentration.
NOTE: If you do not tighten all three screws, the unit may not turn on or it may erratically turn
on and off.
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• If you are unsure about the displayed O percentage.
2
(see Factors influencing accurate readings.)
2.1.3 Automatic Calibration
After the unit is turned on it will automatically calibrate to room air. The
display should be stable and reading 20.9%.
A simple calibration may be made with the sensor open to static Ambient air. For
optimum accuracy Maxtec® recommends that the Sensor be placed in a closed
loop circuit where gas flow is moving across the sensor in a controlled manner.
To check the oxygen concentration of a sample gas:
(after the unit has been calibrated)
2.2.1 In Line Calibration (Flow Diverter – Tee Adapter)
1. Connect the Tygon tubing to the bottom of the
analyzer by threading the barbed adapter onto
the oxygen sensor. (figure 2, B)
®
+
1. Attach the diverter to the MAXO2 by threading it on to the bottom of the sensor.
®
+
2. Insert the MAXO2 in the center position of the tee adapter. (figure 2, A)
FIGURE 2
2. Attach the other end of the sample hose to
the sample gas source and initiate flow of the
sample to the unit at a rate of 1-10 liters per
minute (2 liters per minute is recommended).
3. Attach an open-ended reservoir to the end of the tee adapter. Then start
the calibration flow of oxygen at two liters per minute.
Six to 10 inches of corrugated tubing works well as a reservoir. A calibra-
tion oxygen flow to the MAXO2 of two liters per minute is recommended
to minimize the possibility of obtaining a "false" calibration value.
3. Using the "ON/OFF" key, make sure the unit
®
+
is in the power "ON” mode.
4. Allow the oxygen reading to stabilize. This will normally take about 30
4. Allow the oxygen to saturate the sensor. Although a stable value is usually
observed within 30 seconds, allow at least two minutes to ensure that the
sensor is completely saturated with the calibration gas.
seconds or more.
2.2 Calibrating the MAXO2®+ Oxygen Analyzer
®
+
5. If the MAXO2 is not already turned on, do so now by pressing the
®
+
NOTE: We recommend use of medical grade oxygen at 100% when calibrating the MAXO2
.
analyzer “ON” button.
®
®
+
+
The MAXO2 Analyzer should be calibrated upon initial power-up. Thereafter,
6. Press the Cal button on the MAXO2 until you read the word CAL on the
Maxtec® recommends calibration on a weekly basis. To serve as a reminder, a
one week timer is started with each new calibration. At the end of one week a
reminder icon “ ” will appear on the bottom of the LCD. Calibration is recom-
analyzer display. This can take approximately 3 seconds. The analyzer will
now look for a stable sensor signal and a good reading. When obtained,
the analyzer will display the calibration gas on the LCD.
mended if the user is unsure when the last calibration procedure was performed,
or if the measurement value is in question.
NOTE: Analyzer will read “Cal Err St” if the sample gas has not stablized.
For hospital and home care a new calibration is required when
2.2.2 Direct Flow Calibration (Barb)
• The measured O percentage in 100% O is below 97.0% O
2
2
2
®
+
1. Attach the Barbed Adapter to the MAXO2 by threading it on to the
• The measured O percentage in 100% O is above 103.0% O
2
2
2
bottom of the sensor.
• The CAL reminder Icon is blinking at the bottom of the LCD
• If you are unsure about the displayed O percentage. (see Factors
influencing accurate readings.)
2
2. Connect the Tygon tube to the barbed adapter. (figure 2, B)
3. Attach the other end of the clear sampling tube to a source of oxygen with
a known oxygen concentration value. Initiate flow of the calibration gas to
the unit. Two liters per minute is recommended.
For ID testing, (or optimum accuracy) a new calibration is required when
• The measured O percentage in 100% O is below 99.0% O
2
2
2
• The measured O percentage in 100% O is above 101.0% O
2
2
2
• The CAL reminder Icon is blinking at the bottom of the LCD
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®
+
4. Allow the oxygen to saturate the sensor. Although a stable value is usually
observed within 30 seconds, allow at least two minutes to ensure that the
sensor is completely saturated with the calibration gas.
• Calibrate the MAXO2 at the same pressure as the sample gas.
• If sample gases flow through tubing, use the same apparatus and flow rates
when calibrating as when measuring.
®
+
5. If the MAXO2 is not already turned on, do so now by pressing the
analyzer “ON” button.
3.4 Humidity Effects
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+
6. Press the Cal button on the MAXO2 until you read the word CAL on the
®
+
Humidity (non-condensing) has no effect on the performance of the MAXO2
analyzer display. This can take approximately 3 seconds. The analyzer
will now look for a stable sensor signal and a good reading. When
obtained, the analyzer will display the calibration gas on the LCD.
other than diluting the gas, as long as there is no condensation. Depending on
the humidity, the gas may be diluted by as much as 4%, which proportionally
reduces the oxygen concentration. The device responds to the actual oxygen
concentration rather than the dry concentration. Environments where condensa-
tion may occur are to be avoided since moisture may obstruct passage of gas to
the sensing surface, resulting in erroneous readings and slower response time.
For this reason, the following is recommended:
3.0 FACTORS INFLUENCING ACCURATE READINGS
3.1 Elevation Changes
• Avoid usage in environments greater than 95% relative humidity.
• Changes in elevation result in a reading error of approximately 1% of reading
per 250 feet.
• When used in a breathing circuit, place the sensor upstream of the humidifier.
HELPFUL HINT: Dry sensor by lightly shaking moisture out, or flow a dry gas at two liters per
minute across the sensor membrane.
• In general, calibration of the instrument should be performed when elevation at
which the product is being used changes by more than 500 feet.
3.2 Temperature Effects
4.0 CALIBRATION ERRORS AND ERROR CODES
®
+
The MAXO2 will hold calibration and read correctly within 3% when at thermal
®
+
equilibrium within the operating temperature range. The device must be thermally
stable when calibrated and allowed to thermally stabilize after experiencing tem-
perature changes before readings are accurate. For these reasons, the following
is recommended:
The MAXO2 analyzers have a self test feature built into the software to detect
faulty calibrations, oxygen sensor failures, and low operating voltage. These are
listed below, and include possible actions to take, if an error code occurs.
E02: No sensor attached
®
• For best results, perform the calibration procedure at a temperature close to
the temperature where analysis will occur.
MAXO2 +A: Open unit and disconnect and reconnect sensor. Unit should perform
an auto calibration and should read 20.9%. If not, contact Customer Service for
possible sensor replacement.
• Allow adequate time for the sensor to equilibrate to a new ambient temperature.
CAUTION: “CAL Err St” may result from a sensor that has not reached thermal equilibrium.
• When used in a breathing circuit, place the sensor upstream of the heater.
®
MAXO2 +AE: Disconnect and reconnect external sensor. Unit should perform an
auto calibration, and should read 20.9%. If not, contact Customer Service for
possible sensor replacement or cable replacement.
E03: No valid calibration data available
Make sure unit has reached thermal equilibrium. Press and hold the Calibration
Button for three seconds to manually force a new calibration.
3.3 Pressure Effects
®
+
Readings from the MAXO2 are proportional to the partial pressure of oxygen.
E04: Battery below minimum operating voltage
Replace batteries.
The partial pressure is equal to the concentration times the absolute pressure.
Thus, the readings are proportional to the concentration if the pressure is held
constant. Therefore, the following are recommended:
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CAL Err St: O2 Sensor reading not stable
Wait for displayed oxygen reading to stabilize, when calibrating the device at
100% oxygen.
Carefully, bring the two halves of the case together while positioning the wires so
they are not pinched between the two case halves. The gasket separating the
halves will be captured on the back case half.
Wait for unit to reach thermal equilibrium (Please note that this can take up to
one half hour, if the device is stored in temperatures outside the specified operat-
ing temperature range).
Reinsert the three screws and tighten until the screws are snug. (figure 3)
The device will automatically perform a calibration and begin displaying % of oxygen.
CAL Err lo: Sensor voltage too low
HELPFUL HINT: If unit does not function, verify that the screws are tight to allow proper
electrical connection.
Press and hold the Calibration Button for three seconds to manually force a new
calibration. If unit repeats this error more than three times, contact Customer
Service for possible sensor replacement.
HELPFUL HINT (MAXO2+ AE): Before closing the two case halves together, verify that the keyed
slot on top of the coiled cable assembly is engaged on the small tab located on the back case.
This is designed to position the assembly in the correct orientation and prevent it from rotat-
ing. Improper positioning could hinder the case halves from closing and prevent operation
when tightening the screws.
CAL Err hi: Sensor voltage too high
Press and hold the Calibration Button for three seconds to manually force a new
calibration. If unit repeats this error more than three times, contact Customer
Service for possible sensor replacement.
CAL Err Bat: Battery voltage too low to recalibrate
Replace batteries
6.0 CHANGING THE OXYGEN SENSOR
®
6.1 MAXO +A Model
2
Should the oxygen sensor require changing, the device will indicate this by
presenting “Cal Err lo” on the display after initiating a calibration.
5.0 CHANGING THE BATTERIES
Should the batteries require changing, the device will indicate this in one of two ways:
To change the oxygen sensor, begin by removing
the three screws from the back of the device.
A #1 phillips screwdriver is required to
remove these screws.
• The battery icon on the bottom of the display will begin to flash. This icon
will continue to flash until the batteries are changed. The unit will continue
to function normally for approx. 200 hours.
Lock Lever
Once the screws are removed, gently separate
the two halves of the device.
• If the device detects a very low battery level, an error code of “E04” will be pres-
ent on the display, and the unit will not function until the batteries are changed.
Disconnect the oxygen sensor from the printed
circuit board by pressing the un-lock lever first and
then pulling the connector out of the receptacle.
To change the batteries, begin by removing the three
screws from the back of the device. A #1 Phillips
screwdriver is required to remove these screws.
FIGURE 4
The oxygen sensor can now be replaced from the back half of the case.
Once the screws are removed, gently separate
the two halves of the device.
HELPFUL HINT: Be sure to orient the new sensor by aligning the red arrow on the sensor with
the arrow in the back case. A small tab is located on the back case that is designed to engage
the sensor and prevent it from rotating within the case. (figure 4)
The batteries can now be replaced from the back half of the
case. Be sure to orient the new batteries as indicated in
the embossed polarity on the back case.
NOTE: If the oxygen sensor is installed incorrectly, the case will not come back together and
the unit may be damaged when the screws are reinstalled.
NOTE: If the batteries are installed incorrectly the
batteries will not make contact and the device will not operate.
FIGURE 3
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Reconnect the oxygen sensor to the connector on the printed circuit board.
Carefully bring the two halves of the case together while positioning the wires to
ensure they are not pinched between the two case halves. Make sure the sensor is
fully inserted and in the proper orientation.
exhaled breath or secretions, unless you intend to dispose of the sensor, flow diverter
and tee adapter after use.
• Clean the sensor with a cloth moistened with isopropyl alcohol
(65% alcohol/water solution).
Reinsert the three screws and tighten until the screws are snug. Verify the unit
operates properly.
• Maxtec® does not recommend use of spray disinfectants because they can con-
tain salt, which can accumulate in the sensor membrane and impair readings.
The device will automatically perform a calibration and begin displaying % of oxygen.
• The oxygen sensor is not intended for steam, ethylene oxide or radiation sterilization.
®
6.2 MAXO +AE Model
2
Accessories
Should the oxygen sensor require changing, the device will indicate this by
• The flow diverter and tee adapter may be disinfected by washing them
with isopropyl alcohol or Cidex (per manufacturer's instructions). The parts
must be thoroughly dry before they are used.
presenting “Cal Err lo” on the display.
Unthread the sensor from the cable by rotating the thumbscrew connector
counterclockwise and pull the sensor from the connection.
Replace the new sensor by inserting the electrical plug from the coiled cord into
the receptacle on the oxygen sensor. Rotate the thumbscrew clockwise until snug.
• Sterilizing -The flow diverter and tee adapter may be sterilized using
Cidex, steam or ethylene oxide (per manufacturer's instructions). Due
to the varying conditions imposed on the materials during sterilization it
is not possible to determine the exact number of times the sterilization
processes can be carried out. Therefore, Maxtec® recommends that oper-
ators carefully examine the flow diverter and tee adapter after sterilization
and prior to use to verify that the item is fit for use. The operator should
verify that there are no cracks and the item does not show any indication
of material changes or physical damage that may compromise its effective
use. Both flow diverter and tee adapter should be free of any chemical
residue remaining from the sterilization process.
The device will automatically perform a calibration and begin displaying % of oxygen.
7.0 CLEANING AND MAINTENANCE
®
+
Store the MAXO2 analyzer in a temperature similar to its ambient environment of
daily use.
Because of the variability of the cleaning, disinfecting and sterilizing processes,
Maxtec® cannot provide specific sterilization instructions, nor can the sterility of
the item be ensured. Therefore, we highly recommend referring to the manufac-
turer's instructions on the details of method.
The instruction given below describes the methods to clean and disinfect the
instrument, sensor and its accessories (e.g. flow diverter, tee adapter):
Instrument
®
+
• When cleaning or disinfecting the exterior of the MAXO2 analyzer, take
appropriate care to prevent any solution from entering the instrument. Do
not immerse unit in fluids.
8.0 SPECIFICATIONS
8.1 Base Unit Specifications
®
+
• The MAXO2 analyzer surface may be cleaned using a mild detergent and
a moist cloth.
Measurement Range:
Resolution:
Accuracy and Linearity:
0-100%
0.1%
®
+
• The MAXO2 analyzer is not intended for steam, ethylene oxide or radiation
1% of full scale at constant temperature, R.H. and
pressure when calibrated at full scale.
sterilization.
Total Accuracy:
Response Time:
3% actual oxygen level over full operating
temperature range.
90% of final value in approximately 15 seconds at 23°C.
Oxygen Sensor
WARNING: Never install the sensor in a location that will expose the sensor to patient's
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BAT
CAL
Warm-up Time:
none required
9.2 Standard Replacement Parts
Operating Temperature:
Storage Temperature:
Atmospheric Pressure
Humidity:
Power Requirements:
Battery Life:
Low Battery Indication:
Sensor Type:
Expected Sensor Life:
15°C - 40°C (59°F - 104°F)
-15°C - 50°C (5°F - 122°F)
800-1013 mBars
A Model AE Model
Part Number
R125P02-011
R125P03-002
R115P85
Item
MAX-250+ Oxygen Sensor
MAX-250E Oxygen Sensor
MAX-250ESF Oxygen Sensor
Gasket
X
X
X
0-95% (non-condensing)
2, AA Alkaline batteries (2 x 1.5 Volts)
approximately 5000 hours with continuous use
"BAT" icon displayed on LCD
Maxtec® MAX-250+ galvanic fuel cell
>900,000 O percent hours minimum 2-years in
2
typical medical applications
R217P08
X
X
X
X
X
X
X
X
X
X
RP06P25
#4-40 Pan Head Stainless Steel Screw
Front Assembly (Includes Board & LCD)
Back Assembly
R217P16-001
R217P11-002
R217P24
Coiled Cable Assembly
Overlay
R217P09-001
X
A Model Dimensions:
A Weight:
3.0"(W) x 4.0"(H) x 1.5"(D) [76mm x 102mm x 38mm]
0.4 lbs. (170g)
AE Model Dimensions:
3.0"(W) x 36.0"(H) x 1.5"(D) [76mm x 914mm x 38mm]
Height includes external cable length (retracted).
0.6 lbs. (285g)
9.3 Optional Accessories
9.3.1 Optional Adapters
AE Weight:
8.2 Sensor Specifications
Part Number
RP16P02
R103P90
RP16P12
RP16P05
RP16P10
R207P17
Item
Blue Tee Adapter
Perfusion Tee Adapter
Long-Neck Tee Adapter
Pediatric Tee Adapter
MAX-Quick Connect
Threaded Adapter with Tygon Tubing
Type:
Life:
Galvanic fuel sensor (0-100%)
2-years in typical applications
+
BAT
9.0 MAXO SPARE PARTS AND ACCESSORIES
2
CAL
9.3.2 Mounting Options (requires dovetail)
9.1 Included With Your Unit
Part Number
R206P75
R205P86
R213P31
R100P10
R217P23
Item
A Model AE Model
Part Number
R217P43-002
R217P44-002
R217M40
Item
Pole Clamp
Wall Mount
Swivel Mount
Rail Mount
Dovetail Assembly
MAXO2+A Medical Unit with Sensor
MAXO2+AE Medical Unit with Sensor
User’s Guide and Operating Instructions
Quick Reference Calibration Card
Lanyard
X
X
X
X
X
X
X
X
X
X
X
X
X
X
R217P27
RP76P06
9.3.3 Carrying Options
R207P17
Threaded Adapter with Tygon Tubing
Screw Driver
Part Number
RP77P01
R217P22
R213P02
R213P56
R217P32
R213P90
Item
Jump Bag
Belt Clip and Pin
RP18P01
X
X
X
R110P10
Flow Diverter
Zipper Carrying Case with Shoulder Strap
Deluxe Carrying Case, Water Tight
Soft Case, Tight Fit Carrying Case
RP16P02
Blue Tee Adapter
R217P10-001
R217P15-001
R217P10-002
R217P15-002
Quick Reference Guide
Getting Started Guide
Quick Reference Guide
Getting Started Guide
®
Handi/MAXO2 + Water Tight Box
X
X
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10.0 WARRANTY
®
The MAXO2 + Analyzer is designed for medical oxygen delivery equipment and systems. Under normal
®
operating conditions, Maxtec® warrants the MAXO2 + Analyzer to be free from defects of workmanship or
materials for a period of 2-years from the date of shipment from Maxtec®, provided that the unit is prop-
erly operated and maintained in accordance with Maxtec®’s operating instructions. Based on Maxtec®’s
product evaluation, Maxtec®'s sole obligation under the foregoing warranty is limited to making replace-
ments, repairs, or issuing credit for equipment found to be defective. This warranty extends only to the
buyer purchasing the equipment directly from Maxtec® or through Maxtec®'s designated distributors and
agents as new equipment.
®
Maxtec® warrants the MAX-250+ oxygen sensor in the MAXO2 + Analyzer to be free from defects in mate-
®
rial and workmanship for a period of 2-years from Maxtec®'s date of shipment in a MAXO2 + unit. Should
a sensor fail prematurely, the replacement sensor is warranted for the remainder of the original sensor
warranty period.
Routine maintenance items, such as batteries, are excluded from warranty. Maxtec® and any other sub-
sidiaries shall not be liable to the purchaser or other persons for incidental or consequential damages or
equipment that has been subject to abuse, misuse, mis-application, alteration, negligence or accident.
These warranties are exclusive and in lieu of all other warranties, expressed or implied, including warranty
of merchantability and fitness for a particular purpose.
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