BINDER KB 23 - Manual (Page 68)

KB (E3.1 + E5.1) 11/2014 page 68/100
14.3.1 Temperature safety device class 3.1
If you turn the control knob (11) to its end-stop (position 10), the safety device class 3.1 protects the
appliance. If you set the temperature a little above the set-point, it protects the charging material.
If the safety device class 3.1 has taken over control, identifiable by its red alarm lamp lighting up, with KB
(E5.1) also by the message “TEMP ALARM” on the controller display, and the buzzer, then proceed as
follows:
•
Mute the buzzer with the EXIT button (KB (E5.1) only).
• Disconnect the unit from the power supply.
• Have an expert examine and rectify the cause of the fault.
• Start the unit again as described in chap. 5.
Setting:
To check the response temperature of the safety device class 3.1, turn on the chamber and set the
desired set point at the temperature controller.
The sections of the scale from 1 to 10 correspond to the temperature range from 0 °C / 32°F to 120 °C /
248°F and serve as a setting aid.
•
Turn the control knob of the safety device using a coin to its end-stop
(position 10) (unit protection).
• When the set point is reached, turn back the control knob until its trip point
(turn it counter-clockwise).
• The trip point is identifiable by the red alarm lamp lighting up; with KB (E5.1)
in addition the buzzer sounds, and the message “TEMP ALARM” is shown in
Display 2.
• The optimum setting for the safety device is obtained by turning the control
knob clockwise by approximately two scale divisions, which shuts off the red
alarm lamp.
Figure 16: Setting safety device class 3.1
Check the setting regularly and adjust it following changes of the set-point or charge.
It is still possible to set the safety controller (chap. 14.2) via the controller menu. In case
different values are set via the menu and via the control knob, the one that will be reached the
first is the valid one. The additional setting of the safety device class 3.1 via the control knob
provides additional security because it ensures turning off the unit in case of temperature
exceeding independently from the controller.
Function check:
Check the temperature safety device class 3.1 at appropriate intervals for its functionality. It is
recommended that the authorized operating personnel should perform such a check, e.g., before starting
a longer work procedure.