Maxtec MaxO2+ Bedienungsanleitung Seite 8

6 CHANGING THE OXYGEN SENSOR
6.1 MaxO2+A Model
The oxygen sensor should be replaced whenever the performance is degraded or a calibration
error cannot be resolved.
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.
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.
Warning: Do not attempt to replace oxygen sensor while the device is in use.
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.
ENGLISH
LOCK LEVER
FIGURE 3
7 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, sensor
and its accessories (e.g. flow diverter, tee adapter):
7.1 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 attempt to clean or service MaxO2+ while device is in use.
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.
◆ Cleaning should be performed between patients.
NOTE: The device should be discontinued from service if material degradation or cracking or
observed.
NOTE: Care should be taken to ensure the sensor is not exposed to excessive amounts of lint or
dust which could accumulate in the senor membrane and impair performance. Direct sunlight
should also be avoided since it may cause degradation of the device materials or the device to
overheat affecting performance.
7.2 Oxygen Sensor
Warning: Do Not install the sensor and flow diverter in a location that could expose the
sensor to patient contaminants, unless you intend to dispose of the sensor and flow diverter
after use. The internal surfaces of the sensor or flow diverter which contact the patient gas
stream cannot be cleaned.
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.
◆
NOTE: Under typical use conditions, the surfaces of the sensor and flow diverter in contact with
gas delivered to the patient should not become contaminated. If you suspect that the sensor or
flow diverter have become contaminated these items should be discarded and replaced. The tee
adapter is specified as a single use. Reuse of single use items may result in patient cross
contamination or loss of component integrity.
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