Binder CB 170, Operating Manual

Page: 155 / 175

CB (E7) 06/2018 Page 155/174
Fault description 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 chamber or
closing the door.
Alarm message “CO
2
range”
Temporary disturbance of the
CO
2
control.
Acknowledge the alarm on the
controller. Turn off the chamber. After
approx. 5 minutes turn on the chamber
again. Upon renewed alarm, contact
BINDER service.
CO
2
sensor defective.
Acknowledge the alarm on the
controller. Contact BINDER Service.
Chamber with O
2
control:
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 chamber or
closing the door.
Alarm message “O
2
range”.
Temporary disturbance of the
O
2
control.
Acknowledge the alarm on the
controller. Turn off the chamber. After
approx. 5 minutes turn on the chamber
again. Upon renewed alarm, contact
BINDER service.
O
2
sensor defective.
Acknowledge the alarm on the
controller. Contact BINDER Service.
Too low gas concentration.
The concentration of CO
2
or
O
2
(chamber 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 culture
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.
Chamber with O
2
control:
The displayed actual value of
O
2
(option) 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.
No gas control after hot-air
sterilization.
Sterilization cycle still running. Terminate hot-air sterilization.
Information message not
confirmed. Confirm the information message with
“Ok”.
Inner chamber temperature
above 80 °C Let the inner chamber temperature
decrease below 80 °C.