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Technical Information
Cleaning a New Pump
A new pump requires cleaning only if the desired vacuum is below 1x10
NOTE
Cleaning Safety
Cleaning a diffusion pump involves the use of acetone and alcohol, both of which
are toxic and explosive. Take careful note of the following information and warnings
before starting a cleaning process.
When heated, sprayed or exposed to high temperature equipment, these solvents
become flammable and explosive, causing serious injury or death.
When heated or sprayed, acetone or alcohol also becomes 4 to 5 times heavier
than air and flows down, settling in tanks, pits, and low areas, displacing air, and
thus, can kill by asphyxiation.
Acetone, alcohol, and other solvents are irritants, narcotics, depressants, and
carcinogenic. Their inhalation and ingestion may produce serious effects.
Prolonged or continued contact with the skin will result in absorption through the
skin and moderate toxicity.
Do not use near a high temperature source.
•
WARNING
Always use in a large, well-ventilated room and ventilate the working
•
area with a blower.
Wear eyeshields, gloves, and other protective clothing. The use of a self-
•
contained breathing apparatus may also be necessary.
34
High Throughput Diffusion Pumps User Manual
-7
Torr.
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