BINDER CB 60 - Manual (Page 125)

CB (E6) 09/2013 Page 125/144
Fault description / indication Possible cause
Required measures
Low N
2
outlet pressure
(< 0.3 bar)
(unit with O
2
control)
N
2
cylinder is not connected
correctly.
Confirm the alarm (chap. 11.4).
Correctly connect the gas cylinder.
Connected gas cylinder is
closed.
Confirm the alarm (chap. 11.4). Open
the gas cylinder.
Connected gas cylinder is
empty.
Confirm the alarm (chap. 11.4).
Replace the gas cylinder. Observe
the safety instructions and the
maximum outlet pressure (chap. 4.3).
Gas hose is dirty or obstructed.
Confirm the alarm (chap. 11.4). Turn
off the gas supply and remove the
gas connections. Check the tube
system for dirt accumulation or
obstruction, clean or replace it.
Alarm message
“Low pressure N
2
”
Controller malfunction
Confirm the alarm (chap. 11.4). If
necessary, contact BINDER Service.
Pressure sensor system
defective.
Confirm the alarm (chap. 11.4).
Contact BINDER Service.
21.3 Gas concentration
Fault description / indication Possible cause Required measures
Excess CO
2
concentration.
Having reached the setpoint,
CO
2
exceeds the setpoint by
more than the set tolerance
range value (more than 10
min.)
Temporary disturbance of the
CO
2
control.
Confirm the alarm (chap. 11.4). Turn
off the chamber. Open the chamber
doors for approx. 5 minutes. Observe
the general information for safe
handling of CO
2
(chap. 1.6). Turn on
the chamber again. Upon renewed
alarm, contact BINDER service.
Alarm message
“CO
2
range”
CO 2
sensor defective.
Confirm the alarm (chap. 11.4).
Contact BINDER Service.
Excess O
2
concentration.
Having reached the setpoint,
O
2
exceeds the setpoint by
more than the set tolerance
range value (more than 10
min.) (unit with O
2
control)
Temporary disturbance of the
O
2
control.
Confirm the alarm (chap. 11.4). Turn
off the chamber. Open the chamber
doors for approx. 5 minutes. Observe
the general information for safe
handling of oxygen (chap. 1.6)..
Prevent oxygen enrichment in the
ambiance of the unit. Turn on the
chamber again. Upon renewed alarm,
contact BINDER service. Alarm message
“O
2
range”
O
2
sensor defective.
Confirm the alarm (chap. 11.4).
Contact BINDER Service.
Recovery time (up to 5 vol.-%
CO
2
) after doors were open for
2 minutes is < 2 minutes
CO
2
sensor system defective. Contact BINDER Service.