ENGLISH
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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.
Reinsert the three screws and tighten until the screws are snug. (FIGURE 2).
The device will automatically perform a calibration and begin displaying % of oxygen.
HELPFUL HINT:
If unit does not function, verify that the screws are tight to allow proper electri-
cal connection.
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.
6.0 CHANGING THE OXYGEN SENSOR
6.1 MaxO2+A Model
Should the oxygen sensor require changing, the device will indicate this by presenting “Cal Err
lo” on the display after initiating a calibration.
To change the oxygen sensor, begin by removing the three screws from the back of the device.
LOCK LEVER
FIGURE 3
A #1 Phillips screwdriver is required to remove these screws.
Once the screws are removed, gently separate the two halves of the device.
Disconnect the oxygen sensor from the printed circuit board by pressing the unlock lever first
and then pulling the connector out of the receptacle. The oxygen sensor can now be replaced
from the back half of the case.
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 3)
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 new sensor has red tape over the outside, remove it, then wait 30 minutes before
calibrating.
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.
Reinsert the three screws and tighten until the screws are snug. Verify the unit operates prop-
erly. The device will automatically perform a calibration and begin displaying % of oxygen.
6.2 MaxO2+AE Model
Should the oxygen sensor require changing, the device will indicate this by 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. 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.
The instruction given below describes the methods to clean and disinfect the instrument, sen-
sor and its accessories (e.g. flow diverter, tee adapter):
Instrument Cleaning:
◆
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.
◆
The MaxO2+ analyzer surface may be cleaned using a mild detergent and a moist cloth.
◆
The MaxO2+ analyzer is not intended for steam, ethylene oxide or radiation sterilization.
Oxygen Sensor:
WARNING:
Never install the sensor in a location that will expose the sensor to patient’s
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).
◆
Maxtec does not recommend use of spray disinfectants because they can contain salts,
which can accumulate in the sensor membrane and impair readings.
◆
The oxygen sensor is not intended for steam, ethylene oxide or radiation sterilization.
Accessories:
STERILIZING:
The flow diverter and tee adapter Maxtec recommends that operators 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 indiction of material changes or physical damage that may compromise its effective 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. If the
accessory is suspected to be contaminated it should be removed and discarded.
8.0 SPECIFICATIONS
8.1 Base Unit Specifications
Measurement Range .................................................................................................................0-100%
Resolution .......................................................................................................................................0.1%
Accuracy and Linearity .....................................1% of full scale at constant temperature, R.H. and
pressure when calibrated at full scale
Total Accuracy ........................................±3% actual oxygen level over full operating temp range
Response Time ........................................ 90% of final value in approximately 15 seconds at 23˚C
Warm-up Time ..............................................................................................................None required
Operating Temperature ............................................................................15˚C - 40˚C (59˚F - 104˚F)
Storage Temperature .................................................................................-15˚C - 50˚C (5˚F - 122˚F)
Atmospheric Pressure ................................................................................................ 800-1013 mBars
Humidity .....................................................................................................0-95% (non-condensing)
Power Requirements .............................................................2, AA Alkaline batteries (2 x 1.5 Volts)
Battery Life ............................................................approximately 5000 hours with continuous use
Low Battery Indication .........................................................................."BAT" icon displayed on LCD
Sensor Type ........................................................................Maxtec Max-250 series galvanic fuel cell
Expected Sensor Life ........................................................ > 1,500,000 O2 percent hours minimum
(2-year in typical medical applications)