Pfeiffer Vacuum HEPTA 100 P, Руководство по эксплуатации

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3 Product description
3.1 Function
The HeptaDry screw pumps function according to the double screw-pump principle. Two screw rotors
rotate in the compression chamber. The medium to be pumped is trapped between the individual screw
coils, compacted and transported to the gas outlet. During the compression process, the two screw ro-
tors do not come into contact with each other or with the suction chamber.
Fig. 2: Functional principle with heat exchanger
Operation of this screw pump is instigated with each occurrence of intake pressure between atmos-
phere and final pressure. Despite contactless operation of the screw pump, no operating fluid, such as
oil or water, is necessary within the working chamber. A gas ballast valve, sealing gas device and/or
silencer can be installed at the gas exhaust, depending on the respective application.
4
3
2
14
6
1
7
8
9
12
11
10
5
13
Fig. 3: Structure of the vacuum pump shown on the Hepta 200 | 300 P as an example
1 Vacuum connection 8 Magnetic sealing plug
2 Eye bolt (2x) 9 Cooling liquid drain screw
3 Cooling liquid filler tank 10 Rubber-metal bumper (4x)
4 Connection for temperature sensor, exhaust side 11 Cooling liquid drain screw
5 Sight glass 12 Gas ballast connection
6 Exhaust connection 13 Temperature switch
7 Sight glass 14 Motor terminal box
Product description
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