5.2.1 Earthquake safety. Pfeiffer HiPace 400

Installation

5.2.1

Earthquake safety

An earthquake can result in contact with the safety bearings. All forces occuring hereby are safely absorbed by the properly installed flange connections.

 Secure the vacuum chamber against shifting and tipping on customers side.

VACUUM CHAMBER

Fig. 3: Example: How to secure against shifting and tipping by external tremors

= Safety connection, implementation each by the customer

5.2.2

Use of a splinter shield or protection screen

Pfeiffer Vacuum centering rings with splinter shield or protection screen in the high vacuum flange protect the turbopump against foreign bodies coming from the chamber.

Thus, the pumping speed of the pump is reduced.

Splinter shield DN 100

Protection screen DN 100

Reduced volume flow rate in %

H

2

4

2

He

7

1

N

2

19

5

Ar

22

5

5.2.3

Vibration damper

WARNING

Danger from the turbopump and vibration damper being torn-off

In case of sudden blocking of the rotor, an applied vibration damper cannot compensate any of the occurring forces. There is a danger of the turbopump being torn-off and thereby resulting severest injuries and property damages. Applicable safeguards must be taken to compensate possible occurring torques.

 Definitely consult with Pfeiffer Vacuum.

 Do not exceed the max. permissible temperature at the vibration damper (100 °C).

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