Lower Piston Release Procedure; Action 1 - Micromeritics DVVA II 4000 Operator's Manual

Troubleshooting
7. If the data acquisition driver has successfully loaded earlier, then an entry named
"Micromeritics DVVA" will be shown in the Device Manager window. If the driver has
failed to load, this entry will be missing.
If this entry is missing,
Action on page 9-6.
Once the instrument is functioning properly, do not turn off the computer power
switch or the DVVA MAIN POWER switch located on the rear panel of the instrument.
The DVVA II 4000 analyzer should not be connected via a USB cable to a computer
unless the DVAA II 4000 is powered (the MAIN POWER switch on the rear panel is in
the ON position).

Lower Piston Release Procedure

Perform Action 1 below. If this does not correct the problem, perform Action 2.

Action 1

1. Ensure that the upper piston is in the raised position. If it is not, select Unit 1 > Schematic,
then Unit 1 > Enable Manual Control to display the Manual Control screen.
Use the
9-8
perform the device driver installation process described under
icon next to the upper piston to raise it to its home position.
DVVA II 4000
Upper piston
manual control
400-42803-01 (Rev B) - July 2017