6.Trouble shooting
6.4 Typical fill or drain problems
Fill and drain problems may be due to several causes:
1.There is insufficient reagent
•Verify that both the reagent bottles and the wax stations have sufficient reagent.
2.Insufficient pressure or vacuum
The Leica ASP300 is unable to create sufficient vacuum (for a fill) or pressure (for a drain) in the retort.
•Verify that the reagent bottle in question is correctly inserted in the reagent cabinet.
•Verify that all reagent bottles are fully pushed home into their sockets.
•Check whether there is some debris under the retort lid seal causing a leak.
3.There is a blockage in the air or reagent lines
If there is reagent in the retort that cannot be drained, try to remove the blockage as follows:
•Heat the retort to the maximum possible temperature (consistent with the reagent currently in the retort, if any) and leave it at this temperature for at least 15 minutes.
•Whilst the retort is at maximum temperature, attempt to fill or drain.
•If the retort is empty:
Run the extended retort clean program. Use the maximum set- tings for number of clean cycles and temperature (consistent with the type of reagents/solvents used in the clean program).
If you cannot eliminate the problem by carrying out the above listed steps, call Leica Technical Service
58 | Instruction manual V 1.3 – 12/2003 |