Installation

WARNING

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Diffusion pumps are typically cleaned with acetone, alcohol, or other solvents.

When heated, sprayed or exposed to high temperature equipment, these solvents become flammable and explosive, causing serious injury or death. Do not use near high temperature source. Ventilate work- ing area with a blower and use in large, well-ventilated room. When heated or sprayed, acetone or alcohol also becomes 4 to 5 times heav- ier than air and will flow down, settling in tanks, pits, and low areas, thus displacing air which can kill by asphyxiation. Use in a large, well- ventilated room. Use of a self-contained breathing apparatus may be necessary.

Acetone, alcohol, and other solvents are irritants, narcotics, depres- sants, and/or carcinogenics. Their inhalation and/or ingestion may pro- duce serious effects. Prolonged or continued contact with the skin will result in absorption through the skin and moderate toxicity. Always ensure that cleaning operations are carried out in large, well-ventilated rooms, and wear eyeshields, gloves, and protective clothing.

e.Remove all traces of the cleaning fluid by carefully drying with clean, dry, oil-free compressed air.

f.For reassembly, reverse the above procedure.

g.Clean the flanges and O-ring grooves thoroughly with acetone or alcohol, using clean, lint free rags.

CAUTION

Alcohol, acetone, and other solvents degrade O-ring materials reducing their ability to hold a vacuum. Do not use any solvents on O-rings. If necessary to clean O-rings, wipe with lint-free, clean cloth, wash in detergent and water, or use a small amount of pump oil.

h.Remove all traces of acetone or alcohol by carefully drying with clean, dry, oil-free com- pressed air. Install O-ring gasket.

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