2/3
A 10
Dry pump operational principle
G 01038 - Edition 05 - September 03
Tightness with
environment
The pump is fitted with ball bearings lubricated with fluorinated
grease.
An overpressure zone is created around the bearing by injecting a
neutral gas. The pressurization and the seals prevent pumped gases
from migrating towards the bearings.
Neutral gas purging for the bearings is imperative for corrosive
processes.
Tightness at low
pressure side
Tightness at motor side
(shaft passage)
The vacuum tightness is ensured
by the motor design with built-in
jacket (hermetically sealed).
This system provides total safety
regarding leaks outside the pump
and requires no maintenance.
1 - Built-in jacket
2 - Motor housing
3 - Electrical rotor
1
2
3
Tightness at high
pressure side
The bearings are lubricated by oil splashing.
The oil sump is sealed from stage HP
5
by a trap and a deflector.
1
2
5
7
3
8
6
1 - Stage HP5
2 - Cooling plate (trap)
3 - Water cooling
4 - HP
5
purge
5 - Dynamic seal
6 - Lubrication disk
7 - Gear casing
8 - Deflector
4
adixen Vacuum Products - Operating instructions - ADP/ADS Series Two
