Maintenance
Maintenance schedule
This following table shows the recommended maintenance schedule for the ORBISPHERE
3100 instrument. This proposed schedule should be modified according to operating conditions.
Interval Item
Daily Clean outside of the instrument with a damp cloth and run clean water through the
instrument to clean the internal passageways
Weekly Clean outside of the instrument with a damp cloth and run 20 mL of ethanol (EtOH)
through the instrument to clean the internal passageways
Monthly Run warm water through the instrument followed by 20 mL of ethanol (EtOH).
Dry by flowing dry air or N
2
through the instrument
Yearly Calibrate the oxygen sensor
Every 4 years Replace the oxygen sensor spot and perform a sensor calibration
Batteries
The instrument is designed to operate on rechargeable batteries. When battery power becomes low,
the batteries can be recharged by connecting the instrument to the mains power supply using the
supplied power adapter and cable. When connected, the batteries are automatically recharged.
Sensor
W A R N I N G
If the instrument is being powered by mains power, disconnect the instrument from the power supply before
carrying out this procedure.
Based on instrument usage of 8 hours/day and 365 days/year, the sensor spot will need to be
replaced about once every 4 years. The procedure is very simple and takes no more than a few
minutes.
Before starting, ensure you have the replacement flow chamber assembly as supplied with the
maintenance kit (part number DG33228). Switch the instrument OFF and make sure it is
disconnected from any mains power supply.
Follow these instructions referring to the illustrations below:
1. Remove the front panel from the instrument by unscrewing the 2 screws underneath the
instrument (No. 1) that secure it in place. Use the cross screwdriver supplied in the tool kit for this
purpose.
2. Once removed, the flow chamber assembly (No. 2) can be seen located to the right of the flow
meter.
English
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