Binder C 150 User Manual download pdf (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.

Message “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 be ≥ 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.

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