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8
PFPE-prepared Microvac pumps
8.1
Summary
PFPE-prepared Microvac pumps are supplied prepared for use with Edwards PFPE mechanical pump oils, such as
Fomblin YVAC 06/6 or Krytox 1506.
PFPE-prepared Microvac pumps are suitable for pumping high concentrations of oxygen.
Edwards recommends referencing publication P300-20-000 (Vacuum Pump and Vacuum System Safety) before
installing and using a PFPE-prepared Microvac pump.
8.2
Installation
Never use hydrocarbon lubricants in a PFPE-prepared pump.
When filling the Microvac pump with oil (as described in
Hydrocarbon oil cannot be used.
8.3
Operation
PFPE-prepared Microvac pumps are suitable for pumping high concentrations of oxygen, but
Edwards recommends that PFPE-prepared Microvac pumps not be used for the pumping of
hazardous materials.
Operation of a PFPE-prepared Microvac pump is as specified in
8.4
Maintenance
Obey the safety instructions given below and take note of appropriate precautions. If not, injury
to people can occur.
Take additional care if the pump (hence the PFPE oil) is suspected of overheating.
Do not touch or inhale the thermal breakdown products of PFPE oil which may be present if the pump has been heated
to 260 °C (500 °F) and above. PFPE oils are safe in normal use but can decompose into very dangerous substances if
heated to 260 °C (500 °F) and above. The pump may have overheated if it was misused, if it malfunctioned, or if it
was in a fire. Material Safety Data Sheets for PFPE oils used in the pump are available on request: contact the supplier
or Edwards.
Fomblin oil has different properties from other pump oils, therefore:
If filling the PFPE-prepared Microvac pump with Fomblin oil, Edwards recommends to check for oil leaks, particularly
around the shaft seals.
If an oil leak is detected, contact the supplier or Edwards for advice.
© Edwards Limited 2011. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
CAUTION
Section
3), a suitable Edwards PFPE oil must be used.
WARNING
Section
4, but take note of the warning above.
WARNING
S149-01-880 Issue F
Page 39
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