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ONE O2 OXYGEN MONITOR ALARM UNITS Page 14 of 21.
Figure 5-1 ONEO2 MONITOR WITH LID AND FACEPLATE REMOVED
5.6.2 FITTING THE NEW SENSOR-BATTERY PACK
Check that the `Replace by..’ date of the new sensor and battery being inserted has not
expired.
Carefully insert the connector attached to the red and black wires of the battery pack onto
the black connector of the PCB. The connector is polarised and so can only be fitted one
way round. Do NOT force the two halves of the connector together. Carefully slide the
battery pack into the space adjacent to the PCB. When correctly fitted the two halves of the
connector are held together by the battery pack
Figure 5-2 BATTERY PACK CONNECTION
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