BINDER UF V 500 - Manual (Page 68)

UF V (E2+E2.1) 03/2013 page 68/112
10.8 Temperature sensor failure
A sensor fault alarm display takes priority over all other operational
displays and alarm signals on the controller.
Figure 49: Failure of Pt100 temperature sensor for the refrigerating machine. Refrigera-
tion is turned on permanently
Figure 50: Failure of Pt100 temperature sensors for the refrigerating machine
Figure 51: Failure of Pt100 temperature sensor for ambient temperature or air intake of
the 1 st stage cooling (refrigerating machine)
Figure 52: Failure of Pt100 temperature sensor for safety controller: refrigeration is
turned on permanently
Figure 53: Failure of Pt100 temperature sensor for interior measurement: refrigeration is
turned on permanently
• Alarm message “ 992” or “997” immediately
• LED indication immediately: LED flashes
• Audible alarm: buzzer (intermittent sound) immediately
• Switching the zero-voltage relay alarm output.
Actions:
•
Please contact BINDER Service.
•
Alarm message “ 992” or “998” or “999” immediately
• LED indication immediately: LED flashes
• Audible alarm: buzzer (intermittent sound) immediately
• Switching the zero-voltage relay alarm output.
• The refrigerating machine is turned on permanently.
Actions:
•
Please contact BINDER Service.
• If the temperature rises, i.e. the refrigerating machine is defective (safety controller temperature alarm
and / or tolerance range alarm):
•
Transfer the material to another freezer.
• Turn off the freezer.
• If necessary, clean and disinfect the freezer.