BINDER C 150 - Manual (Page 77)

C 150 (E2) 12/2012 page 77/90
Fault description Possible cause Required measures
Heating (continued)
Temperature inside too low.
Message “otc” is displayed
(safety controller alarm). Limit temperature reached. Safe-
ty controller (chap. 9.2) set too
low. Check the setting of the safety
controller. Choose a suitable limit
value (chap. 9.2).
Temperature inside too high.
Message “otc” is displayed
(safety controller alarm). Controller defective.
Contact BINDER service. Safety controller (chap. 9.2) de-
fective.
Chamber heating permanently,
set point not held. Semiconductor relay defective.
Contact BINDER service.
Controller defective.
Mes sage “End” is displayed Sterilization cycle completed. Start up the unit (chap. 5).
Gas
Pressure alarm. Message “P.Lo”
is displayed (low pressure
alarm).
CO
2
cylinder is not connected
correctly.
Correctly connect the gas cylinder.
Connected gas cylinder is closed
or empty.
Open or replace gas cylinder.
Gas hose is dirty or obstructed.
Check the tube system for dirt
accumulation or obstruction, clean
or replace it.
Pressure sensor system defective Contact BINDER service.
CO
2
concentration inside too
low.
Doors not closed. Close door properly.
Door gaskets defective. Replace door gaskets.
CO
2
cylinder is not connected
correctly.
Correctly connect the gas cylinder.
Connected gas cylinder is closed
or empty.
Open or replace gas cylinder.
Gas hose is dirty or obstructed.
Check the tube system for dirt
accumulation or obstruction, clean
or replace it.
CO
2
concentration inside too
low. Message “con” is displayed
(CO
2
tolerance range alarm)
Doors not closed. Close door properly.
Door gaskets defective. Replace door gaskets.
Wrong controller setting.
Check and, if appropriate, set the
operating function “AL.2” (CO
2
alarm threshold) (chap. 7.3). Value
should b
e ≥ 1.0 vol.-%.CO
2
.
CO
2
sensor defective. Contact BINDER service.
CO
2
concentration inside too
high.
CO
2
sensor defective. Contact BINDER service.
CO
2
concentration inside too
high. Message “con” is dis-
played (CO
2
tolerance range
alarm)
Wrong controller setting.
Check and, if appropriate, set the
operating function “AL.2” (CO
2
alarm threshold) (chap. 7.3). Value
should be ≥ 1.0 vol.-%.CO
2
.
Actual value of CO
2
deviates
largely compared with a refer-
ence method.
The pH indicator of the cell me-
dium changes its normal color
CO
2
sensor system defective.
Transfer the cultures to another
incubator and contact BINDER
Service.
Recovery time (up to 5 vol.-%
CO
2
) after doors were open for 2
minutes is < 2 minutes.
CO
2
sensor system defective. Contact BINDER service.
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, con-
nections, hose system).
Insufficient CO
2
input pressure.
Gas fine filter obstructed. Contact BINDER service.