22
Lid adjustment
Lid adjustment is only required if the infills have changed, or if new infills have been
fitted.
To Perform a Lid Adjustment
1.
Select
Lid Adjust (Program 109)
from
Optima vT interface: Run Mode >
Dashboard. See Figure 26.
Figure 26: Lid Adjustment Software Screen
2.
Undo large clamping nut on top of chamber, then turn center crew counter-
clockwise 10 turns, or until the stop on the screw is reached. See Figure 27.
Figure 27: Lid Adjustment
3.
Press
Start
(from Optima vT or Control box) and allow chamber to evacuate to
its normal test pressure.