BINDER C 150 - Manual (Page 52)

C 150 (E2) 12/2012 page 52/90
10.7 CO
2
tolerance range alarm (CO
2
over/under concentration)
The main controller CO
2
alarm.
The CO
2
concentration has risen above or fallen below the CO
2
alarm threshold.
The alarm signal is usually emitted immediately upon the fault occurring, but no alarm signal is emitted
during the CO
2
alarm delay time after the outer door is closed.
Visual display:
LED Lower display, alternating
Percentage CO
2
Alarm code
Flashes
Flashes
Audible alarm: buzzer (intermittent sound)
Switching the zero-voltage relay alarm output
Actions:
Check the setting of the operating function “AL.2” (CO
2
alarm- threshold). The value should be ≥ 1 vol.-
% CO
2
. If necessary, adjust the value.
Check that the outer door is closed properly.
Check the door's seals for any damage. Replace any damaged seals.
If the above points do not reveal the source of the fault, it may be that the unit is faulty. Please contact
BINDER Service.
In case of a CO
2
over concentration alarm, proceed as follows:
Open both unit doors for approx. 30 seconds. Respect the precautions when working with CO
2
gas
(chap. 1.6).
Normal operation can be restarted, as soon as the requested values have been readjusted.
If the same alarm recurs, please contact BINDER Service.
10.8 CO
2
pressure too low
The CO
2
primary pressure at the intake valve is less than 0.3 bar / 4.4 psi below the ambient air pressure.
The alarm displays show a pressure drop of CO
2
admission below 0.3 bar / 4.4 psi. Check whether the
gas cylinder is open.
Immediate alarm
Visual display:
LED Lower display, alternating
Percentage CO
2
Alarm code
Flashes
Flashes
Audible alarm: buzzer (intermittent sound)
Switching the zero-voltage relay alarm output