Micromeritics TriStar II 3020 Maintenance Instructions Manual page 8

Initial Evaluation
5. If the schematic is not selected, select
6. If manual control is not enabled, select
7. Install empty sample tubes on the three sample ports.
8. Make sure valve 6 is closed and use the servo valve to backfill the system with nitrogen to
760 mmHg. Verify that the transducers are within 3 mmHg of each other.
9. Verify that the temperature shown on the schematic is normal.
10. Manually move the elevator up and down.
11. Pull a vacuum on all three ports. Verify that the transducer reading can measure 1 mmHg
or less.
12. If any of the above functions fail, the instrument must be repaired before continuing to
the next section of scheduled maintenance steps.
4
TriStar II 3020 Scheduled Maintenance Instructions
Unit [n] > Show Instrument Schematic.
Unit [n] > Enable Manual Control
.
Jun 09