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8.Work Plan for Carrying out Freeze-
Drying
8.Plan de travail pour realiser une
lyophilisation
Note:
The vacuum pump (16) should continue to run for
approximately 30 minutes after the bulbs have been re-
moved. During this time, the gas ballast valve should be
open and the shutoff valve (32) closed.
This makes it possible to remove any substances which
may have condensed in the pump oil and lengthens the
service life of the oil. (See the operating manuals for the
TRIVAC D 4 B/D 8 B pumps and the manual for the
pump oils).
Vent the condenser housing (2) by opening one of the
connecting valves (23) for a short time.
8.3
Defrosting the Condenser
The unit must be switched off and the condenser housing
(2) vented before it can be defrosted. The two possibilities
of defrosting the condenser are described in detail under
Point 7.6, page 25).
Remarque:
La pompe a vide (16) devrait fonctionner environ 30
minutes apres la fin de lyophilistion et en regeneration
d'huile.
La chambre de condensation (2) sera remise a Fair en ou-
vrant un court instant un des robinets de la rampe de
sechage.
8.3. ,
Degivrage du condenseur
Au prealable il faut que l'appareil soit arrete et la chambre
de condensation remise a l'air. Ensuite, il est possible de
degivrer comme specific au pt. 7.6., p. 25.
33
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