vacuubrand RE 2.5, Instructions For Use Manual

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59 20901559_EN_RE_RZ_V7_230523
Cleaning and maintenance
Notes on pump oils
The standard oil standard oil for rotary vane pumps is the B‑oil for rotary vane B‑oil for rotary vane
pumps pumps . This is a mineral oil, which is used for the first filling of the
pump.
The advantages of the B‑oil are:
ƒ
flat viscosity curve,
ƒ
low vapor pressure,
ƒ
good chemical resistance,
ƒ
extended stability when pumping oxidants, acid or basic vapors
compared to conventional mineral oils.
Certain pumped media may attack the standard oil in the pump.
Special oils can be used preventively. It is at the users’ respon ‑
sibility to check if the materials of the wetted parts are resistant
against the pumped substances. This is also mandatory if special
oils are used.
Special oils
Synthetic oil Synthetic oil (perfluoropolyether oil, e. g., Fomblin
®
*)
Synthetic oils have an excellent chemical resistance and are cer ‑
tified for pumping pure oxygen. Therefore these oils are excellent
for handling strong oxidants, e. g., halogens, nitrogen oxides, etc..
* reg. trade mark Montedison
NOTE NOTE
Damage of the vacuum pump due to formation of an
emulsion.
>
Perfluoropolyether oils mixed with mineral oils result in an
emulsion.
>
Pumps to be filled with perfluoropolyether oil must be dili ‑
gently cleaned and must be absolutely free of any residues
of mineral oils.
Due to a different viscosity or density compared to the standard
oil, pumps filled with special oil may not achieve the specified ulti ‑
mate pressure. The high viscosity and the high density of the per ‑
fluoropolyether oil make rotary vane pumps with this oil difficult to
start at temperatures below 64 °F (18 °C).
Pump oils
Use of synthetic
oils, e. g.,
perfluoropolyether oil