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CB / CB-UL, CBF / CBF-UL (E7) 07/2021 Page 170/197
Fault description
Possible cause
Required measures
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. To replace the sensor
proceed as described in chap. 22.4.
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.
22.6.5 Sterilization
Indication
Possible cause
Required measures
The sterilization is running.
Alarm message “Sterilization”.
Sterilization cycle is running
Acknowledge the alarm on the
controller. Do not open the door.
22.6.6 Humidity (CB / CB-UL)
Fault description
Possible cause
Required measures
Condensations inside the
chamber.
Permadry™ pan filled with
water when the chamber is not
operating.
Empty Permadry™ pan when the
chamber is not operating.
Door gaskets defective.
Replace door gaskets
Doors not closed properly.
Close door properly.
Humidity set too high.
Reduce humidity (chap. 6.8)
Condensation on the doors or
on the optional divided inner
door, gas-proof.
Chamber placed on very cold
floor.
Place the chamber on a BINDER stand
to increase the distance to the floor.
Door gaskets defective.
Replace door gaskets
Doors not closed properly.
Close door properly.
Humidity set too high.
Reduce humidity (chap. 6.8)
Door heating set too low.
Contact BINDER Service to adjust the
door heating
Too low humidity inside.
Humidity set too low.
Increase humidity (chap. 6.8)
Chamber door not properly
closed.
Completely close chamber door.
Door gasket defective.
Replace door gasket.
Permadry™ pan empty.
Fill the outer Permadry™ pan with
water up to the marking on the inner
pan with distilled, sterile water. The
pan must have thorough contact to the
bottom of the inner chamber, see
chap. 4.2.
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