Advanced Instruments 3250 - Routine Maintenance; Shutdown and Storage

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Advanced
™
Osmometer Model 3250 User’s Guide
Routine maintenance
Daily. Checks you should perform to keep your instrument in peak
condition are:
• Calibration Repeatability: Readings each day on separate aliquots of
the same standards should not deviate beyond the repeatability and
drift limits indicated in Appendix B.
• Heat-transfer fluid: Heat-transfer fluid will evaporate from the well
and droplets will cling to the sample tubes as they are removed.
Check the contents of the heat transfer fluid reservoir occasionally;
replace the fluid when the level drops below the REPLACE line on
the bottle.
CAUTION The heat transfer liquid contains hazardous chemicals.
Consult the material safety data sheet (MSDS) and use
appropriate personal protective equipment.
Monthly. Maintenance you should perform:
Clean or replace the air filter (Figure 3, item 7) monthly; replace as
necessary. A dirty filter affects the ability of the fan to cool internal
components; a rise in internal temperature may adversely affect
reliability.
Shutdown and storage
Overnight or weekend:
1. Rinse the probe clean with distilled water and wipe it dry.
2. Turn off the instrument, if desired.
3. Do not cover the instrument unless it is turned off.
One week or longer:
1. Rinse the probe clean with distilled water and wipe it dry.
2. Turn off the instrument.
3. Unplug the power cord from the wall outlet.
4. Cover the instrument.