General safety precautions
► Do not expose body parts to the vacuum.
► Observe the safety and accident prevention regulations, if necessary wear personal protective
equipment.
► Check all safety measures at regular intervals.
► Always ensure a secure connection to the earthed conductor (PE), protection class I.
► During operation, make sure that plug-and-socket connections are securely fitted.
► Never operate the vacuum pump with open vacuum flange.
► Never make your own conversions or modifications to the vacuum pump.
► Before returning the vacuum pump, observe the notes in the chapter Service.
2.4 Limits of use
Parameter
HiLobe
Installation location
weatherproof (internal space)
Installation altitude
max. 2000 m above sea level
1)
Installation surface flatness
horizontal, max. permissible angle of inclina-
tion: ± 3°
Ambient temperature
+5
℃
to +40
℃
Relative humidity of air
max. 85 %
Permanent intake pressure in circulation mode < 1100 hPa (abs.)
Max. pressure differential in circulation mode
80 hPa
Max. speed in circulation mode
4200 rpm
Permanent intake pressure in vacuum mode
depending on max. pressure differential
Max. gas temperature, pressure side
250 °C
Degree of pollution
2
Protection class
I
Overvoltage category
II
Permissible protection degree
IP54
Type 12 according to UL 50E
Tbl. 3:
Permissible ambient conditions
10
20
30
40
50
n
[1/min]
3000
5000
7000
[h
Pa
]
Δ
p
ma
x
Fig. 4:
Permissible pressure differential between input and output sides, as a function of
pump rotation speed
1)
at installation altitudes > 1,000m above m.s.l. and an ambient temperature of 40 °C the rated power of the
motor reduces by around 10 %
Safety
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