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102
Thermo Fisher Scientific
User Guide STP420D/STP420ES
4-7 System Self-test
at Start of a Protocol
When any rotary or biopsy chamber protocol is started, the instrument
automatically carries out a tightness test on the pressure and vacuum.
If the test indicates a system error, the screen displays the following
message:
•
“Please check that reagent bottle is leak-tight: Bottle cap is loose or bottle
not inserted correctly, or water level in wash bottle is too low“.
Make
sure that all reagent bottles are tightly closed and fully inserted in
position. Check whether the cover of the chamber is closed.
• “X Biopsy program: The flow resistance in the air line or the water level
in the wash bottle is too high”.
Check the level of the wash bottle.
Reduce the level of the wash bottle to the minimum mark (See
section 3-3-2).
•
“X over-/under-pressure error“, “X A pressure change of 10 mbar was
not reached in 15 sec.“
The system has encountered an error that
can be resolved only by a technician. Contact Customer Service at
ThermoFisher without delay.
troubleshooting and Errors
System Self-test at Start of a Protocol