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Verfügbare Sprachen
Fig. 8 Curves showing the pressure rise
3.3 Operation
Avoid sudden changes
of attitude, extreme outside vi-
brations and shock to the pump during operation.
3.4 Switching
Switch
off the TURBOVAC
Refer to the TURBOTRONIK operating instructions for
details.
Switch off the forevacuum
Air the TURBOVAC before
refer
to Section
3.5.
In TRIVAC pumps the built-in
close automatically
and shut off the forevacuum
When using forevacuum
back valve, close the valve in the forevacuum
Close off the cooling water supply or switch off the ven-
tilation immediately after switching off the TURBOVACin
order to avoid condensate
GA 05.118/5
- 12/97
103
mbar
102
10
10-2
5
off
at the TURBOTRONIK.
pump.
it has come to a full standstill;
anti-suckback
valve will
pumps without an anti-suck-
line.
formation in the pump.
TURBOVAC
50, 50 D
TURBOVAC
151, 361
TURBOVAC
600, 1000
10
15
20
Time
If the pump previously handled corrosive gases, it will be
necessary
to purge the pump with dry nitrogen for one
hour prior to shut-down.
ation,
ensure
that
agents can enter the TURBOVAC.
3.5 Airing
Air the TURBOVAC
prevent any return diffusion of oil fumes out of the fore-
vacuum-line
and into the high-vacuum section.
Use dry nitrogen, for instance, for airing purposes.
There are several methods which may be used to air the
TURBOVAC:
1.
(C versions only) In processes requiring purge gas,
line.
the pump will have to be vented through the purge
gas valve when it is shut off.
If the vacuum chamber is vented additionally with
purge gas, the bypass valve in the purge gas and
airing valve will have to be opened beforehand
simultaneously.
sure
be maintained
forevacuum chamber, avoiding damaging return dif-
fusion of corrosive gases.
30
25
When the system is not in oper-
neither
ambient
air nor cleaning
each
time
it is shut
down
Only in this way will a higher pres-
in the motor
chamber
Operation
in order
to
or
than
in the
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