NEW BRUNSWICK SCIENTIFIC AS-10 Manual To Operations page 55

Symptom
Vessel fails to hold sterilization
temperature
Vessel fails to cool during cool-down
Unit fails to go into dispense mode.
Media becomes contaminated while
dispensing.
Media-clogged filter, as indicated by
slow delivery of media from dispense
port.
Vessel safety relief valve "pops".
No response to keypad functions
Foaming condition.
New Brunswick Scientific Co., Inc.
Possible Cause
•
Defective temperature controller.
•
Water supply valve not opened or partially
opened.
•
Clogged water lines.
•
Defective input water solenoid valve.
•
Defective temperature controller.
•
Defective temperature controller.
•
Failure to properly clean dispense hose, nozzle
and quick-connect fitting.
•
Defective filter
•
Defective filter.
•
Defective temperature controller
•
Defective temperature sensor.
•
Defective relief valve.
•
Keypad not connected to control board.
•
Leak in vessel seal or exhaust line.
55
User's Guide