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3650 Portable O2 Analyzer - Maintenance and Troubleshooting 37 of 50
Operator Manual
ORBISPHERE
6 Maintenance and Troubleshooting
6.1 Maintenance
6.1.1 Instrument Batteries
The ORBISPHERE 3650 instrument operates on battery power (two standard C-type
cells). If battery power should drop, a LO BAT warning message appears in the
instrument LCD's top-left corner.
To install the batteries, unscrew the battery cap (on the right side of the instrument) with
a coin or flat screwdriver, place the cells lengthwise into the battery compartment
(positive end first), and then replace the cap. Refer to the diagram on the back of the
instrument.
Rechargeable nickel-cadmium batteries may be used - expect about 40 hours of
autonomy. Alkaline batteries provide the longest continuous use though mercury-free
batteries are available that present less of a disposal problem.
Make sure that a fully charged (or fresh) set is installed before switching on the
instrument.
6.1.2 Sensor
For full details, see the accompanying EC Sensors - Maintenance & Installation
Manual.