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

8

PFPE-prepared EM pumps

8.1

Introduction

When specifying a PFPE-prepared EM pump, the pump will be supplied prepared for use with Edwards PFPE
mechanical pump oils, such as Fomblin 06/6 and Krytox 1506.
PFPE-prepared EM pumps are suitable for pumping high concentrations of oxygen.
Edwards recommends referring to Edwards publication P400-40-100 (Vacuum Pump and Vacuum System Safety)
before installing and using a PFPE-prepared EM pump.
8.2

Installation

Never use hydrocarbon lubricants in a PFPE-prepared pump.
Installation of a PFPE-prepared EM pump is as specified in
8.3

Operation

PFPE-prepared EM pumps are suitable for pumping high concentrations of oxygen, but Edwards
recommends not using a PFPE-prepared EM pump for the pumping of hazardous materials.
Operation of a PFPE-prepared EM pump is as specified in
8.4

Maintenance

Obey the safety instructions given below and take note of appropriate precautions. failure to
follow instructions can cause injury to people and damage to equipment.
Take additional care if it is possible that the pump or the PFPE oil has overheated.

Do not touch or inhale the thermal breakdown products of PFPE oil that 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 when heated to 260°C and above. The pump may have overheated if misused, 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 the PFPE-prepared EM pump is filled with Fomblin oil, Edwards recommends regularly checking for oil

leaks, particularly around the shaft seals.
If an oil leak is detected, contact the supplier or Edwards for advice.

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Edwards and the Edwards logo are trademarks of Edwards Limited.
CAUTION
Section 3.
WARNING
Section 4.
WARNING
A373-10-880 Issue T
Page 41