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UF V (E3) 10/2020 Page 95/119
25.2.4 Maintenance of the door lock
The door handle, door hinges and the locking counterpart must be cleaned at least once a year (chap.
24.1). After cleaning, lubricate the running surface of the handle and the locking counterpart with medical
vaseline.
25.3 Simple troubleshooting
Defects and shortcomings can compromise the operational safety of the chamber and can lead to risks and
damage to equipment and persons. If there are is a technical fault or shortcoming, take the chamber out of
operation and inform BINDER Service. If you are not sure whether there is a technical fault, proceed ac-
cording to the following list. If you cannot clearly identify an error or there is a technical fault, please contact
BINDER Service.
Only qualified service personnel authorized by BINDER must perform repair.
Repaired chambers must comply with the BINDER quality standards.
Fault description
Possible cause
Required measures
General
Chamber without function.
No power supply.
Check connection to power sup-
ply.
Wrong voltage.
Check power supply for correct
voltage (chap.4.5).
Chamber fuse has responded.
Check chamber fuse and replace
it if appropriate. If it responds
again, contact BINDER service.
Controller defective. Contact BINDER service.
Alarm message “Door open” Chamber door open. Close chamber door.
Refrigerating performance
No refrigerating performance af-
ter turning on the chamber.
Alarm message “Safety control-
ler”
Limit temperature reached.
Check setting of temperature set-
point and of safety controller. If
appropriate, select suitable limit
value.
Controller defective.
Contact BINDER service.
Safety controller defective.
Semi-conductor relay defective.
Too much external heat load.
Reduce heat load
Chamber refrigerating perma-
nently, set-point not held.
Semiconductor relay defective.
Contact BINDER service.
Controller defective.
Controller not adjusted, or adjust-
ment interval exceeded.
Calibrate and adjust controller.
Door not shut tightly.
Check if doors are closed.
Frost on door gasket.
Defrost the door gasket with the
ice scraper.
Door gasket defective.
Contact BINDER service.
Door opened very frequently.
Open doors less frequently
Place of installation too warm.
Select cooler place of installation
or contact BINDER service.
Introduction of too warm or too
large amount of material.
Cool down material before intro-
ducing and / or load in smaller
portions.
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