Chapter 6: Troubleshooting
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37
Original instructions
still present at the bulkhead fittings, loosen the bulkhead fittings and apply
vacuum grease to the O-rings, then reassemble and test.
Stoppering Tray Dryer
•
Inspect the door and door gasket.
•
Inspect the coupling between the freeze dryer and the Stoppering Tray Dryer.
•
Remove the top left hand cover panel and inspect the valve and hose
connections to the chamber.
•
Remove the top right hand cover and inspect the electrical pass through and
gasket on the top of the chamber.
Door Adjustment
The following adjustments can be made if the door is not sealing properly when
vacuum is applied.
1.
The latch can be adjusted to increase the force
between the door gasket and chamber sealing
surface.
a.
Open the door.
b.
Using two ½" wrenches, loosen the nuts
securing the latch pawl.
c.
Move the latch pawl towards the door to
tighten the latch.
d.
Tighten the nuts.
2.
The door hinges can be adjusted to move the door in
towards the chamber sealing surface.
a.
Loosen the screws to the hinge covers and rotate the hinge cover
out of the way.
b.
Turn on the vacuum pump using the Freeze Dryer controls.
c.
After the vacuum level reaches approximately 5 mbar, loosen the
six screws on the door hinges.
Do not remove the screws.
Nuts
Latch
Pawl
