
10. PFPE-prepared RV pumps
10.1 Summary
If a PFPE-prepared RV pump has been ordered, the pump will be supplied prepared for
use with recommended PFPE mechanical pump oils, such as Fomblin YVAC 06/6 and
Krytox 1506.
PFPE-prepared RV pumps are suitable for pumping high concentrations of oxygen.
Refer to publication P40040100 (Vacuum pump and Vacuum System Safety) before
installing and using a PFPE-prepared RV pump.
10.2 Installation
CAUTION:
Never use hydrocarbon lubricants in a PFPE-prepared pump.
When filling the RV pump with oil (as described in
on page 27), a
suitable manufacturers PFPE oil must be used. Do not use a hydrocarbon oil.
10.3 Operation
WARNING:
PFPE-prepared RV pumps are suitable for pumping high concentrations of oxygen, but
we recommend that PFPE-prepared RV pumps are not used for the pumping of
hazardous materials.
Operation of a PFPE-prepared RV pump is as specified in
on page 34 but take
note of the warning above.
10.4 Maintenance
WARNING:
Obey the safety instructions given below and take note of appropriate precautions.
Failure to do so can cause injury to people.
▪
Take additional care if it is suspected that the pump (and hence the PFPE oil) has
overheated.
▪
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 and above. PFPE oils are safe in
normal use but can decompose into very dangerous substances if they are heated
to 260 °C 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 us or the supplier.
03/2021 - ©Edwards Limited
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