FIGURE 5
Lock Lever
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 4)
The device will automatically perform a calibration and begin displaying % of
oxgen.
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 operation when tightening the screws.
7.0 CHANGING THE OXYGEN SENSOR
7.1 MAXO
2
®
+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. 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
un-lock 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 pre-
vent it from rotating within the case. (figure 5)
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.
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