Maxtec MaxO2+ Bedienungsanleitung Seite 7

4 CALIBRATION ERRORS
AND ERROR CODES
The MaxO2+ analyzers have a self-test feature built into the software to detect faulty calibra-
tions, 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
MaxO2+A: Open unit and disconnect and reconnect sensor. Unit should perform an auto
•
calibration and should read 20.9%. If not, contact Maxtec Customer Service for possible
sensor replacement.
MaxO2+AE: Disconnect and reconnect external sensor. Unit should perform an auto
•
calibration, and should read 20.9%. If not, contact Maxtec 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.
E04: Battery below minimum operating voltage
Replace batteries.
•
CAL ERR ST: O2 Sensor reading not stable
Wait for displayed oxygen reading to stabilize, when calibrating the device at 100%
•
oxygen.
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 operating temperature
range).
CAL ERR LO: Sensor voltage too low
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 Maxtec Customer
Service for possible sensor replacement.
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 Maxtec Customer
Service for possible sensor replacement.
CAL ERR BAT: Battery voltage too low to recalibrate
Replace batteries.
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5 CHANGING THE BATTERIES
Warning: Battery replacement by inadequately trained personnel could result in a safety
hazard.
Batteries should be changed by service personnel.
Use only brand name batteries.
•
Replace with two AA batteries and insert per orientation marked on the device.
•
Should the batteries require changing, the device will indicate this in one of two ways:
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.
If the device detects a very low battery level, an error code of "E04" will be present on the
•
display, and the unit will not function until the batteries are changed.
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.
Once the screws are removed, gently separate the two halves of the device.
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 batteries are
installed incorrectly the
batteries will not make contact and the device
will not operate.
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 electrical
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
rotating. Improper positioning could hinder the case halves from closing and prevent opera-
tion when tightening the screws.
Warning: Do not attempt to replace the battery while the device is in use.
7
FIGURE 2
ENGLISH