Pfpe-Prepared Em Pumps; Installation; Operation; Maintenance - Edwards E2M28 Instruction Manual

11. PFPE-prepared EM pumps

If a PFPE-prepared EM pump has been ordered, the pump will be supplied prepared for
use with the manufacturers PFPE mechanical pump oils, such as Fomblin YVAC 06/6 and
Krytox 1506.
PFPE-prepared EM pumps are suitable for pumping high concentrations of oxygen.
We recommend referring to publication P40040100 (Vacuum pump and Vacuum System
Safety) before installing and using a PFPE-prepared EM pump.

11.1 Installation

CAUTION:
Never use hydrocarbon lubricants in a PFPE-prepared pump.
Installation of a PFPE-prepared EM pump is as specified in
take note of the caution above.

11.2 Operation

WARNING:
PFPE-prepared EM pumps are suitable for pumping high concentrations of oxygen,
but We recommend that a PFPE-prepared EM pump is not used for the pumping of
hazardous materials.
Operation of a PFPE-prepared EM pump is as specified in
note of the warning above.

11.3 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. Safety Data Sheets for PFPE oils used in the
pump are available on request: contact us or the supplier.
Fomblin oil has different properties from other pump oils, therefore:
A37310880_V - PFPE-prepared EM pumps
Page 48
Installation on page 17, but
Operation on page 28, but take