Maxtec MaxVenturi Bedienungsanleitung Seite 8

Hudson RCI® Neptune®Heated Humidifier with
ConchaSmart™ Technology and 15mm Comfort Flo
Humidification Circuit (REF 2415 & 2416)
INTERFACE PATIENT
Hudson RCI® Trach-Flex™ Plus
Tracheostomy Adaptor (2415-01)
Hudson RCI® Comfort Flo® Plus
Cannula Large (2412-11)
Hudson RCI® Comfort Flo® Plus
Cannula Medium (2412-12)
Hudson RCI® Comfort Flo® Plus
Cannula Small (2412-13)
CAUTION: The flow rates listed in this table are the result of bench testing the MaxVenturi
on the indicated patient circuits and interfaces. Actual flows may vary in clinical use depending
on patients physiology, breathing rate and other factors listed in Section 3.0.
NOTE: For the Comfort Flo Humidification System, a section of 22mm tubing is used to connect
the outlet of the MaxVenturi to the inlet of the humidification chamber in place of the supplied
pressure relief valve.
3.0 FACTORS INFLUENCING
ACCURATE READINGS
3.1 Elevation/Pressure Changes
Changes in elevation result in a reading error of approximately 1% of reading per
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250 feet.
A change in altitude greater than 500 ft will require sensor recalibration.
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This device does not automatically compensate for changes in barometric pressure
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or altitude. If the device is moved to a location of a different altitude, it must be
recalibrated before use (see section 2.2).
3.2 Temperature Effects
The MaxVenturi will read correctly (within ±3%) when operating at thermal equilibrium within
the operating temperature range of 15 °C - 40 °C (59 °F - 104 °F). The device must be thermally
stable when calibrated and allowed to thermally stabilize after experiencing temperature
changes before readings are accurate. For these reasons it is recommended to:
Perform the calibration procedure at a temperature close to the temperature at
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which the device will be operated.
Allow adequate time for the sensor to equilibrate to a new ambient temperature.
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ATTENTION: "CAL Err St" may result from a sensor that has not reached thermal equilibrium.
3.3 Humidity Effect
The MaxVenturi can be used in applications where the relative humidity of the sample gas
ranges from 0 to 95%, non-condensing. However, it should be noted that water vapor exerts
its own pressure in the same manner as oxygen does in a sample gas stream.
For example, if the analyzer is calibrated in dry gas and then the gas is humidified, the ana-
lyzer will correctly display a reading which is slightly lower than previously displayed. This is
due to the dilution of oxygen in the sample gas by water vapor.
Additionally, gas streams of high humidity may tend to condense on the sensor. Condensation
on the sensor may eventually affect performance. For this reason, it is recommended that the
MaxVenturi be mounted so that the sensor is in a vertical position, facing downward to prevent
condensate from flowing onto the sensing surface.
ENGLISH
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4.0 CALIBRATION ERRORS AND
ERROR CODES
The analyzer has a self test feature built into the software to detect faulty calibrations, oxygen
sensor failures, and low battery voltage. The tests and actions to take if an error occurs are:
F
E02: NO SENSOR ATTACHED
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Disconnect the sensor and reconnect, making sure the male plug is fully inserted
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into the receptacle. The analyzer should now perform a new calibration with the
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error cleared.
If the error still persists, remove the batteries, wait 30 seconds, then reinstall, to
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perform a factory reset and diagnostic on the analyzer. The analyzer should again
perform a new calibration with the error cleared.
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Contact Maxtec Customer Service Department if the error code cannot be cleared.
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E03: NO VALID CALIBRATION DATA AVAILABLE
Make sure unit has reached thermal equilibrium.
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Perform calibration as described in this manual.
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E04: BATTERY BELOW MINIMUM OPERATING VOLTAGE
Replace batteries.
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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%
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oxygen.
Wait for unit to reach thermal equilibrium. NOTE: this can take up to one half
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hour if the device is stored in temperatures outside the specified operating
temperature range.
CAL ERR LO: SENSOR VOLTAGE TOO LOW
Repeat calibration routine as described in this manual. If unit repeats this error
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more than three (3) times, contact Maxtec Customer Service.
CAL ERR HI: SENSOR VOLTAGE TOO HIGH
Repeat calibration routine as described in this manual. If unit repeats this error
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more than three (3) times, contact Maxtec Customer Service.
CAL ERR BAT: BATTERY VOLTAGE TOO LOW TO RECALIBRATE
Replace batteries.
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5.0 CHANGING THE OXYGEN
SENSOR
1
Turn off analyzer.
NOTE: For new sensor installation, follow procedure for new sensor installation in section 2.1.
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2 3
Disconnect sensor from Remove sensor from
sensor cable. sensor port. Dispose of
sensor according to local
guidelines.
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