TriStar II 3020 Preventive Maintenance
302-42828-01 - Dec 2012 9-11
6. Prepare fresh alumina as follows:
a.) Preheat the oven to 300
°C.
b.) Pour approximately 180 grams of fresh alumina into a glass or metal container
(approximately 250 mL if a graduated beaker is used). Place the container in the oven.
c.) Bake the alumina for two hours at 300
°C.
d.) Remove the baked alumina from the oven and allow it to cool until luke warm. A desiccator
may be used to speed the cooling process.
7. Use a small spatula to gently pry the O-ring from the end fittings of each end of the trap body.
8. Inspect the O-rings:
• If dusty, clean with a lint-free tissue.
• If damaged, replace with a new O-ring.
Do not perform the following procedure on used alumina. The resultant oil vapors may
cause a fire or an explosion.
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