26
Advanced
™
Osmometer Model 3250 User’s Guide
Primer Pump
Fluid Return
Tube
Figure 2: Prime the Heat Transfer Fluid Pump
5. Open the heat transfer fluid door to access the small primer pump
(Figure 2). Squeeze the primer pump while the operating head is
cycling, making sure to squeeze at the same time that the operating
head reaches the bottom of its cycle. Observe the fluid return
line from the cooling well back to the bottle. Once fluid begins
to appear, continue priming for five more cycles to remove any
trapped air. Stop using the primer pump and watch the return line
to make sure that a small amount of fluid continues to flow through
the return line with each head up/down cycle. Then press the STOP
key to raise the operating head and exit to the test menu.
6. Press the STOP key a second time to exit from the test menu to
Press START to Continue.