Specifications

Operating Manual Freeze Dryer ALPHA 1-4 LD-2 / 2-4 LD-2, Version 0203, Page 23
2.9 Error resolution
Error Measure
Start of the instrument is not possible
1. Mains failure Mains plug connected?
Check the fuse of the freeze dryer (Mains
connection cord, fuse insert cord)
respectively the fuse of the building and
exchange if necessary
No display
Mains plug connected?
Check the fuse of the freeze dryer (Mains
connection cord, fuse insert cord)
respectively the fuse of the building and
exchange if necessary
Refrigeration system does not work
No vacuum
1. Position of the centering rings is not
correct
(Connection hose between vacuum pump
and cooling trap)
Open small flange connection,
insert Centering rings centrically,
use vacuum grease if necessary
2. Lid seal not tight Cleaning; call service if lid seal is
damaged
(Contact on page. 2)
3. Condensate drain valve defect (does
not close)
Cleaning; exchange O-rings of the
condensate drain valve