Document #: 020-17475-00 Revision: E
Page #: 16 of 63
Figure 11
: Test impeller levitates above
the head of the super-conductive drive
unit during a levitation test.
11.
Remove the protective shield from the test impeller and place the test impeller on the
levitation head. The impeller should levitate a few millimeters above the surface of the
levitation head. This will indicate that the machine is ready for operation.*
12.
Select Manual Mode from Main Menu. In the Manual Mode window select the Edit
button. A Manual Setup window will appear. In the Manual Setup window press the Set
point button. When the entry window opens set the speed to 50 RPM and press ENTER.
The screen will return to Manual Setup window. Press button in the top right corner
to return to Manual mode window.
13.
In the Manual mode window check that the run is set as a Permanent run with a speed
setting of 50 RPM. Press and hold START button until top bar of the window is filled (2-3
sec).
14.
The levitated impeller will spin. The levitation gap should remain uniform with no
significant wobbling of the impeller*.
15.
In the Manual Mode window press and hold STOP button until top bar of the window is
filled (2-3 sec).
16.
When impeller stops rotating remove it from above the levitation head. Do not try to
remove the test impeller while it is spinning. Replace the protective shield on the test
impeller. The unit is now ready to be placed under the mixing tank.
Always put the protective shield back on test impeller when
testing procedure is complete.
If at any time the drive unit is turned off or unplugged, or if
there is a power outage for more than 15 minutes, or if an outage
occurs at any period during charging the drive unit must be recharged
before use – review section H above and repeat the charging
procedure steps 1-14.
*If the test impeller does not levitate or substantial wobbling occurs (more than 1.2 mm
change in the gap) the system must be reset. Turn the system off for at least 25 minutes
and repeat the set up procedure. If the problem continues, contact a technical
representative from your distributor or Pall Life Sciences directly.
