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Thermo Fisher Scientific
User Guide STP420D/STP420ES
A number of conditions can cause fill and drain problems:
• There is insufficient reagent: Verify that the reagent bottles and the
paraffin tanks both have sufficient reagent.
• Inadequate reagent from the external tank: When a message about
inadequate reagent coming from the external tank into the rotation
chamber appears, the reagent is already being pumped back into the
external tank.
• There is insufficient pressure or vacuum: The STP420 cannot
create sufficient vacuum (for a fill) or pressure (for a drain) in the
chamber:
• Verify that all reagent bottles are fully inserted in their correct
locations.
• Ensure that the caps of the reagent bottles are tight.
• Check if the lid of the chamber is properly closed.
• There is a blockage in the air or reagent lines. Appropriate error
messages indicate the specific station that must be cleaned to
remove the blockage, for example:
“Cleaning Station X: Station X filling time (emptying time) is too long,
a station cleaning is recommended”.
Station cleaning takes approximately 20 minutes:
1. Touch
OK
to confirm the error message.
2. Select
Setup
from the screen menu.
3. Select
Cleaning
from the submenu.
4. Select
Station cleaning
.
5. Select
Start
. A dialog box appears with the prompt:
“Position X
contaminated. Please remove bottle X, check for paraffin residue and
clean if necessary”
.
6. Touch
OK
to acknowledge the prompt. A dialog box with a
command prompt:
“Please insert the Xylolreinger bottle in position X
and put the bottle from the position X into a vacant position.”
7. Follow the instructions on the screen and then click OK.
4-2-1 Station cleaning
troubleshooting and Errors
Fill or Drain Problems
4-2 Fill or Drain
Problems
