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CB / CB-UL, CBF / CBF-UL (E7) 07/2021 Page 168/197
Fault description
Possible cause
Required measures
Chamber with O
2
control:
Low O
2
outlet pressure
(< 0.3 bar).
Alarm message
“O2 pressure”
O
2
cylinder is not connected
correctly.
Acknowledge the alarm on the
controller. Correctly connect the gas
cylinder.
Connected gas cylinder is
closed.
Acknowledge the alarm on the
controller. Open the gas cylinder.
Connected gas cylinder is
empty.
Acknowledge the alarm on the
controller. Replace the gas cylinder.
Observe the safety instructions and the
maximum outlet pressure (chap. 4.4).
Gas hose is dirty or
obstructed.
Acknowledge the alarm on the
controller. Turn off the gas supply and
remove the gas connections. Check the
tube system for dirt accumulation or
obstruction, clean or replace it.
Controller malfunction
Acknowledge the alarm on the
controller. If necessary, contact
BINDER Service.
Pressure sensor system
defective.
Acknowledge the alarm on the
controller. Contact BINDER Service.
Chamber with O
2
control:
Low N
2
outlet pressure
(< 0.3 bar).
Alarm message
“N2 pressure”
N
2
cylinder is not connected
correctly.
Acknowledge the alarm on the
controller. Correctly connect the gas
cylinder.
Connected gas cylinder is
closed.
Acknowledge the alarm on the
controller. Open the gas cylinder.
Connected gas cylinder is
empty.
Acknowledge the alarm on the
controller. Replace the gas cylinder.
Observe the safety instructions and the
maximum outlet pressure (chap. 4.4).
Gas hose is dirty or
obstructed.
Acknowledge the alarm on the
controller. Turn off the gas supply and
remove the gas connections. Check the
tube system for dirt accumulation or
obstruction, clean or replace it.
Controller malfunction
Acknowledge the alarm on the
controller. If necessary, contact
BINDER Service.
Pressure sensor system
defective.
Acknowledge the alarm on the
controller. Contact BINDER Service.
22.6.4 Gas concentration
Fault description
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.)
Alarm message
“CO
2
range”
Temporary disturbance of the
CO
2
control.
Acknowledge the alarm on the
controller. Turn off the chamber. Open
the chamber doors for approx. 5
minutes. Observe the general
information for safe handling of CO
2
(chap. 1.8
). Turn on the chamber again.
Upon renewed alarm, contact BINDER
service.
CO
2
sensor defective.
Acknowledge the alarm on the
controller. Contact BINDER Service.
To replace the sensor proceed as
described in chap. 22.4.
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