22
Advanced
™
Osmometer Model 3250 User’s Guide
Step 4 — Install the heat transfer fluid
1. Pull forward the top of the heat transfer compartment door to
release the magnetic latch, then pull the door all the way open (see
Figure 4).
2. Locate the bagged plastic tubes protruding through the back wall
of the compartment. Remove and discard the plastic bag from the
ends of the tubes.
3. A heat transfer fluid filter should already be mounted on the smaller
of the two plastic tubes. If replacement is necessary, force the
tubular end of the heat transfer fluid filter at least ¼" or 6 mm into
the free end of the smaller of the two tubes.
Caution The heat transfer liquid contains hazardous chemicals. Consult
the material safety data sheet (MSDS) and use appropriate
personal protective equipment.
4. Open a bottle of heat transfer fluid.
5. Insert the plastic tube with the heat transfer fluid filter into the
bottle of heat transfer fluid so as to locate the filter at the bottom
of the bottle.
6. Insert the free end of the larger of the two plastic tubes into the
neck of the heat transfer fluid container to return the heat transfer
fluid to the container for recirculation.
7. Stand the container of heat transfer fluid in the plastic tray in the
heat transfer fluid compartment, making sure the filter remains low
in the heat transfer fluid. Press the bottle into the retainer clip.
8. Close the compartment door.
Note When the heat transfer fluid level reaches the REPLACE line on
the bottle label, discard remaining solution and replace with a
new bottle of heat transfer fluid (Part No. 3DA811). Continued
use when fluid is below this level will change the
thermodynamics of the test.
Note It is not recommended to top off the existing bottle of heat
transfer fluid, due to moisture and growth that exist. Always
discard the old bottle and fluid and replace with a new bottle.
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