Connecting The Fore-Vacuum Side - Pfeiffer Vacuum HIPACE 800 Operating Instructions Manual

Installation
5.5

Connecting the fore-vacuum side

20
Recommendation: As backing pump, use a suitable vacuum pump from the Pfeiffer
Vacuum programme.
Damage to health due to poisonous gases
Process gases can damage health and contaminate the environment.
 Safely lead away the gas emission from the backing pump!
 Observe all safety recommendations of the gas producer.
Fig. 5: Connecting the backing pump
20 Fore-vacuum connection
20a Backing pump
Design of the fore-vacuum connection regarding sudden twisting of the pump
If the rotor suddenly blocks the connection of high vacuum flanges of types ISO-KF or
ISO-K can lead to twisting despite proper installation.
 Keep masses small, which can be installed directly to the pump.
 Connect flexible line elements directly to the turbopump, if necessary.
 With rigid pipe connections: Install bellows for attenuation of vibrations in the connec-
tion line.
 Connect the fore-vacuum line with small-flange components or threaded hose cou-
plings. Do not narrow the free cross section of the fore-vacuum flange!
 The backing pump is connected electrically via a relay box.
 For connection and operation of the backing pump see its operating instructions.
Backing pump control
Backing pump control via electronic drive unit of the turbopump is possible using a relay
box or respective connection cables of the accessory programme.
 Refer to the operating instructions of the respective accessory.
WARNING
20 20.1 20.2
20.1 Centering ring
20.2 Clamping ring
NOTICE
20.3
20a
20.3 Vacuum components