Wednesday 18 July 2012

Stability chambers

Stability Chambers :

Whenever Stability Chambers are not maintained to its controlled conditions
The reasons may be
First check the INPUTS and OUT PUTS in software ICDAS 1.2 and act against the particular error, Few of the experiences
A.              When software showing mains off
1.             Ensure the power switched on
2.             Ensure the mains are not tripped down
Due to the above two reasons both the temperature and humidity will fall down

B.               When software showing Boiler heaters off
1.                Ensure the water level in the reservoir tank
2.                Then check WL1,WL2 in the chamber screen, when any of WL1,WL2 is not displaying on the screen, replace with new float switch.
3.                Check the boiler heater function with the help of electrician.
C.               When software showing No error, but not maintaining
1.                Ensure the circulation motor on back side of the chamber is rotating or not
2.                Check the relay of the chamber.
Chamber events
1.    Daily chamber log
2.    Cleaning record-Quarterly
3.    Chamber history card entry for every failure of event.
4.    Deviation – More than 3 consecutive events fail.
5.replace the samples, if a chamber failed to maintains more than 24 hours.(As per ICH)

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