vacuubrand VACUU-PURE 10C, Instructions For Use Manual

Page: 84 / 96

84 20901224_EN_VACUU·PURE 10C_V1.8_221122
Appendix
Use of chemicals
8.1.4 8.1.4 Use of chemicals Use of chemicals
NOTE NOTE
Chemicals can damage the vacuum pump.
Chemicals can damage the wetted parts of the vacuum pump.
>
Check the compatibility of the pumped substances with the
wetted materials of the vacuum pump,

see chapter: 8.1.3 8.1.3
Wetted materials on page 83 Wetted materials on page 83
.
>
Do not use the vacuum pump in connection with substances,
which can dissolve PEEK like for example sulfuric acid or
halogenated phenols.
>
Protect the vacuum pump reliably against the penetration by
other harmful substances, e.g., by using a cold trap.
The wetted parts of the pump spindles, the stator and the bear ‑
ing plate of the vacuum pump are made of polyetheretherketone
(PEEK). PEEK is a high performance plastic with exceptionally
good chemical resistance.
Few chemicals are known to have attacked or even dissolved
PEEK. These include sulfuric acid and various halogenated phe ‑
nols. These substances must not get into the vacuum pump. The
vacuum pump must not be used in connection with these sub‑
stances.
Depending on the operating conditions such as duration, tem ‑
perature, moisture content and concentration of the substances,
some strong acids, such as nitric acid and hydrogen fluoride, as
well as halogens can attack the PEEK surfaces. When used with
these substances, the vacuum pump must be reliably protected
against penetration by these substances, e.g., by using cold traps.