BINDER CB 60 - Manual (Page 126)

CB (E6) 09/2013 Page 126/144
Fault description / indication Possible cause
Required measures
Too low CO
2
concentration.
Having reached the setpoint,
CO
2
falls below the setpoint by
more than the set tolerance
range value (more than 10
min.) or CO
2
doesn’t reach the
tolerance range within 3 hours
from turning on the unit or
closing the door.
Temporary disturbance of the
CO
2
control.
Confirm the alarm (chap. 11.4). Turn
off the chamber. After approx. 5
minutes 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.
Too low O
2
concentration.
Having reached the setpoint,
O
2
falls below the setpoint by
more than the set tolerance
range value (more than 10
min.) or O
2
doesn’t reach the
tolerance range within 3 hours
from turning on the unit or
closing the door (unit with O
2
control)
Temporary disturbance of the
O
2
control.
Confirm the alarm (chap. 11.4). Turn
off the chamber. After approx. 5
minutes 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.
Too low gas concentration.
The concentration of CO
2
or O
2
(unit with O
2
control) does not
reach the adjusted set value.
Door gaskets defective. Replace door gaskets
Doors not closed properly. Close door properly.
Connected gas cylinder is
empty or not opened.
Open or replace gas cylinder.
Gas cylinder is not connected
correctly.
Correctly connect the gas cylinder.
Gas hose is dirty or obstructed.
Check the tube system for dirt
accumulation or obstruction, clean or
replace it.
Recovery time (up to 5 vol.-%
CO
2
) after doors were open for
2 minutes is > 10 minutes.
Obstructed gas supply.
Check gas supply (cylinder,
connections, hose system). Insufficient CO
2
input pressure
Unusually high gas
consumption.
Door gaskets defective. Replace door gaskets
Gas sensor not adjusted. Calibrate the sensor.
Gas sensor defective.
Contact BINDER Service Gas fine filter not connected
correctly.
The displayed actual value of
CO
2
deviates largely compared
with a reference method.. The
pH indicator of the cell medium
changes its normal color.
CO
2
control not adjusted. Calibrate and adjust CO
2
control.
CO
2
sensor defective.
Transfer the cultures to another
incubator and contact BINDER
Service.
The displayed actual value of
O
2
(unit with O
2
control)
deviates largely compared with
a reference method.
O
2
control not adjusted. Calibrate and adjust O
2
control.
O
2
sensor defective.
Transfer the cultures to another
incubator and contact BINDER
Service.