Chemglass AF-0349 Welch Vacuum Pump User Manual
Page 27
27
SECTION 9: ACCESSORIES
9.01
Pump Oil
Directorr® Premium Vacuum Pump Oil is the oil recommended for use with Welch Direct Drive pumps. This is the
oil furnished with each new pump. The vacuum guarantee for these pumps applies only when the recommended oil
is used. Use of other types of oil in these pumps can cause inferior performance, both in pumping speed and ultimate
vacuum attained, and may eventually cause permanent pump damage.
Directorr® Gold Vacuum Pump Oil. A specially formulated mineral oil for direct drive pumps. It has an exceptionally
low oil vapor, which results in a lower ultimate total pressure, less backstreaming and faster system pumpdown. It is
resistant to oil breakdown, especially at high temperatures. As a result less frequent oil changes are required. The
pump will give better vacuum stability over long periods of time. This oil can be used in mildly corrosive applications
in direct drive pumps where a hydrocarbon oil is not recommended.
9.02
Exhaust Filters
NOTE:
For additional information on Accessories, Parts or Products, please consult:
Welch Vacuum’s Laboratory Products Catalog
or
Welch’s website at www.Welchvacuum.com
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