
Care and Maintenance
User-Serviceable Parts
Storage
Maintenance Schedule
O-rings
Short-term (less than one week)
Long-term (more than one week)
Sensors
For best results, send the instrument to the manufacturer for factory calibration every 12 to 18
months.
Lubricate O-rings during
initial setup. Check and
replace O-rings if worn,
damaged, or discolored.
Refer to the sensor cap
instruction sheet for
details.
See the sensor
instruction sheets for
details about maintaining
and replacing.
RDO Sensor Cap
Remove the restrictor
and the end cap.
Put the restrictor on the
instrument in calibration
mode.
Remove the sensors and
wiper.
Dampen the sponge
inside the pH sensor
storage cap with
Storage Solution or pH
calibration standard.
Replace the caps at both
ends of the sensor. Use
electrical tape to seal the
storage cap.
Thread the restrictor
onto the sonde.
Thread the restrictor
onto the sonde and
store.
Pour 15 mL (5 oz) of clean
water into the restrictor
and replace the cap.
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