2.4 Product usage limits
Parameter
Hena 61
Hena 101
Installation location
● Indoors, protected against:
─ dust deposits
─ falling objects
─ fire-fighting water
● Outdoors, protected against:
─ falling objects
─ direct influence of weather such as rain, splash water, strong
drafts and sunlight
─ fire-fighting water
─ lightning strike
Installation altitude
max. 1000 m above sea level
At installation heights > 1000 m above sea level, the rated power of the
motor must be reduced or the ambient temperature limited due to in-
creased heating of the vacuum pump.
Orientation
horizontal
permissible angle of incli-
nation
±1°
Pumped medium intake
temperature, max.
+40 °C
Ambient temperature with
mineral-based operating
fluids (P3)
5
℃
to 35
℃
Ambient temperature with
synthetic-based operating
fluids (D1)
5
℃
to 40
℃
Relative air humidity
max. 85%
Permissible operating pres-
sure range during continu-
ous operation
< 800 hPa
Exhaust pressure
Atmospheric pressure
Tbl. 3:
Product usage limits
2.5 Proper use
► Use the vacuum pump for vacuum generation only.
► When pumping media with an oxygen concentration level of ≥ 21 %, only use perfluorinated, syn-
thetic oils (YLC 250 B, A113) as operating fluid.
► Adhere to the installation, commissioning, operating, and maintenance instructions.
► Do not use any accessory parts other than those recommended by Pfeiffer Vacuum.
2.6 Foreseeable improper use
Improper use of the product invalidates all warranty and liability claims. Any use that is counter to the
purpose of the product, whether intentional or unintentional, is regarded as misuse, in particular:
● Pumping of corrosive media
● Pumping radioactive media
● Pumping of gases that introduce an ignition source to the suction chamber
● Pumping of gases that contain impurities such as particles, dust, or condensate
● Pumping of explosive media
● Pumping of media with a propensity to sublimation
● Pumping of fluids
● Use of the vacuum pump in potentially explosive atmospheres
● Use of the vacuum pump outside the specified area of application
● Use for pressure generation
● Use in strong electrical, magnetic, or electromagnetic fields
● Connection to vacuum pumps or equipment which are not suitable for this purpose according to
their operating instructions
Safety
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