19
a
b
1
2
Figure 19. How to change the Temperature set point (a
–
b)
The set point regulation page will appear as in Figure 19 b. You can modify the set point by clicking on +
and -
. Once you have input the new set point temperature, press “
Set
” to save or
“
Cancel
” to undo.
Tip
►
After any change in the set point value the controller enters into a transient regime, the Status
Indicator and the Top LED turn yellow (see paragraph 8.1.2). During the transient regime, the controller will
not trigger on alarm.
Note
►
If the operating temperature set point is lower than the room temperature and it is changed to a
value higher than the room temperature, the controller will reach the new set point slowly at a heating rate
of 0.1°C/min.
8.1.2
Controller Status: colours led and meaning
H201-T-UNIT-BL-CRYO can assume four different status, which are represented by the colors assumed by
the Status Indicator and by the TOP LED (see Figure 20):
The GREEN color indicates that the Setpoint value has been reached (within the
tolerance defined in the alarm subpage, see paragraph 8.2.2.5) and that the system is working
properly.
Controller Status: NORMAL
The YELLOW color indicates that the controller is in transient regime. The Yellow light
will appear after the controller is turned on and after any Setpoint change. The system is working
properly, it is not in alarm and no action is needed. As soon as H201-T-UNIT-BL-CRYO reaches
the temperature setpoint, H201-T-UNIT-BL-CRYO Status changes to NORMAL and the color turns
GREEN. If H201-T-UNIT-BL-CRYO cannot reach the set temperature value within the maximum
time defined by the operator (see paragraph 8.2.2.5), the Temperature Controller Status changes
to ALARM and the color turns ORANGE.
Controller Status: TRANSIENT
The ORANGE color indicates that the current temperature value is not correct and its
value is out of the set tolerance (see section
ALARMS
in paragraph 8.2.2.5
Controller Status: ALARM
The RED color indicates that there is a problem with the unit itself (for example the
sensor is broken). The system is on alarm. Turn the system off, wait for 5 minutes, and turn it
back on. If the color is still red, contact Okolab at www.oko-lab.com for support.
Controller Status: ALARM
