KBF-LQC (E5.2) 12/2010
page 61/106
11. Temperature safety devices
11.1 Over temperature protective device (class 1)
The climatic chamber KBF-LQC is equipped with an internal temperature safety device, class 1 acc. to
DIN 12880. It serves to protect the unit and prevents dangerous conditions caused by major defects.
If a temperature of approx. 110 °C /
230°F
is reached, the over temperature protective device perma-
nently turns off the unit. The user cannot restart the device again. The protective cut-off device is located
internally. Only a service specialist can replace it. Therefore, please contact an authorized service pro-
vider or BINDER Service.
11.2 Safety controller (temperature safety device class 3.1)
The climatic chamber is equipped with an over temperature safety device class 3.1 acc. to DIN 12880. It
is designated as the “safety controller”. This second, electrically independent temperature controller takes
over at a selectable set point in case of fault. It serves to protect the charging material against extremely
high temperatures.
With option safety device class 3.3 (chap. 11.3) the safety controller is
not
used.
In this case, do NOT change the pre-set value of at least 80 °C /
176°F
.
The message “TEMPERATURE LIMIT” on the controller display indicates safety controller activity. The
safety controller controls the climatic chamber to the entered safety controller set-point until the tempera-
ture inside the chamber returns below this temperature and until you then reset the alarm message by
button RESET.
Regularly check the safety controller setting for set-point type “Limit” or “Offset”
•
in Manual Mode according to the entered set-point temperature value
•
in Program Mode according to the highest temperature value of the selected temperature
program
Set the safety controller set-point by approx. 2 °C to 5 °C above the desired temperature set-
point.
11.2.1 Safety controller set-point types
Limit
Absolute maximum permitted temperature value
Example: temperature set point 40 °C /
104°F
, safety controller set-point 42 °C /
107.6°F
Offset
Maximum over temperature above any active temperature set point. (e.g., 2 °C). The
maximum temperature changes internally and automatically with every set-point change.
Do NOT change the temperature unit from °C to °F.
