Binder CB 160 - Gas Cylinder Pressure Too Low

CB (E6.1) 07/2017 Page 123/145
21.3 Gas cylinder pressure too low
The alarm messages indicate that the pressure in the supply lines of CO
2
, O
2
, and N
2
(chamber with O
2
control) has dropped below 0.3 bar. If no gas cylinder changer is installed, the gas cylinder must be
replaced. Observe the safety instructions and the maximum outlet pressure (chap. 4.4).
Prerequisite for pressure alarm messages for O
2
and N
2
(chamber with O
2
control) is that the
O
2
/ N
2
control with the respective alarms are activated (chap. 6.3).
Note: The recovery times of the gas concentrations inside the chamber following door opening, which are
indicated in the technical data (chap. 22.4), refer to a connection pressure of 2.0 bar / 29 psi. Decreasing
supply pressure down to the shift point (alarm point) of 0.3 bar / 4.4 psi results in longer recovery times.
Check the pressure displays of your gas supply. If very short recovery times are required or the door is
opened frequently, replace the gas cylinders promptly when the pressure decreases below 2.0 bar / 29
psi.
Fault description / indication
Possible cause
Required measures
Low CO
2
outlet pressure
(< 0.3 bar)
CO
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. 4.4).
Alarm message
“Low pressure CO
2
”
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.
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.
Low O
2
outlet pressure
(< 0.3 bar)
(chamber with O
2
control)
O
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. 4.4).
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 O
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.