BINDER C 150 - Manual (Page 51)

C 150 (E2) 12/2012 page 51/90
Temperature too low (under temperature alarm):
Check that the outer door is closed properly.
Check the door's seals for any damage. Replace any damaged seals.
Temperature too high (over temperature alarm):
Check whether samples were inserted into the C 150 that produce heat under the climate conditions in
the unit.
Check the ambient conditions.
The ambient temperature must be at least by 7 °C / 12.6 °F below the temperature set point of the C
150. Protect the C 150 from direct sunlight. Ensure sufficient ventilation around the installation location
to prevent any buildup of heat in the unit.
If points 1 to 6 do not reveal the source of the fault, it may be that the unit is faulty. Please contact
BINDER Service.
To decrease the temperature, proceed as follows: Turn off the unit. Open both unit doors for approx. 5
minutes. Turn on the unit again. You can restart normal operation as soon as the requested values
have equilibrated.
If the same alarm recurs, please contact BINDER Service.
10.6 Door open
The open and closed position of the unit door is controlled via the door contact switch. If the door is open,
the temperature and CO
2
controls turn off.
Immediate alarm
Visual display:
LED Upper display, alternating
Temperature Alarm code
flashes
Audible alarm: buzzer (intermittent sound, beginning 5 minutes after the door is opened)
Switching the zero-voltage relay alarm output (beginning 5 minutes after the door is opened)
Actions:
Close the outer door.
Use the “EXIT” button to turn off the buzzer even when the door is open.
The alarm message is cancelled.
The zero-voltage relay alarm output switches off.