TriStar II 3020 Scheduled Maintenance Instructions Maintenance (Power Disconnected)
Jun 09 9
9. Check the alumina in the oil vapor trap. If most of the pellets are no longer white, replace
the alumina in the oil vapor trap (see instructions below) before reattaching the vacuum
pump.
10. Reconnect the vacuum pump hose.
11. Reconnect the power cord to the power source.
12. Allow the pump to run a few hours (overnight if possible) to eliminate air and moisture
from the fresh fluid and to produce efficient vacuum operations.
Replacing the Alumina in the Oil Vapor Trap
If you have checked the alumina and determined that it is necessary to replace it, activate, then
replace the alumina as described below.
1. Preheat the drying oven to 300 °C.
2. Loosen the wing nut on the clamp at the bottom of the oil vapor trap. Swing the clamp
open and remove the trap.
3. Remove one end fitting from the trap body; dispose of the used alumina in an appropriate
manner.
4. Wash the trap body with a detergent-based soap. Rinse with water, then with isopropyl or
ethyl alcohol. Set the trap aside and allow to dry thoroughly
.
Avoid inhalation, eye contact, and unnecessary skin contact with activated alumina.
Prolonged contact with activated alumina may cause skin irritation.
Exposure of the trap body to oil vapor may cause small cracks on the inside surface of
the trap body. Under normal circumstances, these cracks will not cause problems or
leaks.
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