4.2
Start-up
The starting pressure for the
TURBOVAC
can be read from the chart repro-
duced in Fig. 8.
Where S
f
/ V > 100[h
-1
], the forevacuum pump and the
TURBOVAC
can be
switched on simultaneously.
In such a situation the
TURBOVAC
serves from the very outset as an effective
baffle.
When dealing with larger volumes, the vacuum chamber will first have to be
pumped down with the forevacuum pump.
Then switch on the cooling and the
TURBOVAC
(at the
TURBOTRONIK
).
Kindly refer to the
TURBOTRONIK
operating instructions for details.
Avoid impact and vibration while the pump is running.
Operation
25
GA05118_1502 - 12/2006 - © Oerlikon Leybold Vacuum
Starting pressure
Vibrations
10
3
10
2
10
1
10
0
mbar
0
25
50
75
100
h
-1
125
S
f
= Pumping speed at the
forevacuum pump (m
3
/h)
V = Chamber volume (m
3
)
S
v
/ V
Starting pr
essur
e
Fig. 8 Determining the starting pressure for a TURBOVAC when evacuating larger volumes
TURBOVAC
151 to 1000
TURBOVAC
35 LS(2), 50
