Pfeiffer Vacuum HILOBE 2704, Operating Instructions Manual

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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.)
Permanent intake pressure in vacuum mode
depending on max. pressure differential
Max. gas temperature, pressure side 250 °C
Loss of pumping speed for backing pump ≤ 10:1
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
20
10
0
30
40
50
60
n
[1/min]
3000 5000 9000 11000 7000
[
h
Pa
]
Δ
p
ma
x
Fig. 3: Max. permissible pressure differential between input and output sides, in accordance
with 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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