Binder 9020-0213, Translation Of The Original Operating Manual

Page: 62 / 113

UF V (E2+E2.1) 03/2013 page 62/112
10.3 Safety controller temperature alarm
The selected temperature value of the safety controller was exceeded.
Figure 41: Safety controller
temperature alarm
•
Alarm message “ otc ” immediately
•
LED indication immediately: LED flashes, LED continually lit
•
Audible alarm: buzzer (ongoing sound) immediately
•
Switching the zero-voltage relay alarm output
Actions:
•
Check whether the outer door was open for a long time or is not closed properly. Close the door if
necessary.
•
Check the setting of the operating function “ SA.F ” (limit temperature of the safety controller) in
operating modes HAND (chap. 8.2) or USER (chap. 8.3). The limit temperature should be approx. by
15 K above the temperature set point. If necessary, adjust the relevant value.
•
Check whether samples were inserted into the freezer that may release heat.
•
Check the ambient conditions. Protect the freezer from direct sunlight. Ensure sufficient ventilation
around the installation location to prevent any buildup of heat in the unit.
•
If these points do not reveal the source of the fault, it may be that the unit is faulty. Please contact
BINDER Service.