Directly Establishing Sealing Gas Connection; Preparing Connection For External Sealing Gas Valve Or Throttle - Pfeiffer Vacuum HIPACE 80 NEO Betriebsanleitung

Installation
If dry room air is used as the sealing gas, the sealing gas connection is ready for operation immediately.
If you wish to use another inert gas (e.g., nitrogen N
with hose connection from the Pfeiffer Vacuum accessories range.
● Pfeiffer Vacuum recommends the use of sealing gas from 50 % of the maximum gas throughput.
● The permissible inlet pressure for sealing gas is 1,500 hPa absolute.
● The flow rate for sealing gas is 8 to 11 sccm.
5.6.1 Directly establishing sealing gas connection
Required tools
● Hexagon wrench, WAF 13
Accessories required
● Filter element for filtering ambient air
● Push-in fitting for admission of inert gases
Fig. 12:
1 Locking screw
2 Filter element
Utilizing sealing gas connection
1. Unscrew the locking screw on the sealing gas connection.
2. Screw in the filter element hand-tight.
3. Alternatively: Connect an external inert gas supply using a push-in fitting from the Pfeiffer Vac-
5.6.2 Preparing connection for external sealing gas valve or throttle
Damage to the turbopump due to unrestricted air supply at the sealing gas connection
After the internal throttle has been removed from the sealing gas connection, room air or inert gas
can enter the interior of the turbopump unhindered. Depending on the operating status, this may
damage or even destroy the turbopump.
► At all times, ensure that room air or inert gas only enters the interior of the turbopump via the
96/130
3
Directly utilizing sealing gas connection
3
– Be careful with the sealing ring.
– Be careful with the sealing ring.
uum accessories range.
sealing gas connection in a restricted manner.
– Use a sealing gas valve with integrated throttle or a sealing gas throttle without monitoring if
you wish to introduce a different sealing gas amount.
– Use a Pfeiffer Vacuum sealing gas valve with AccessLink only in conjunction with the facto-
ry-installed throttle.
) as the sealing gas, use a G 1/8'' push-in fitting
2
1
2
Sealing ring
NOTICE