Installation
15
Install the high vacuum flange in accordance with the instructions in the operating
manual of the turbopump.
Ensure the greatest possible cleanliness when installing any high vacuum parts. Un-
clean components prolong the pump-down time.
Observe the minimum strength of 170 N/mm
2
for the flange material.
5.4
Connecting the exhaust side
Prepare the exhaust line provided by customer starting from the pumping station's
casing.
Choose the cross-section of the exhaust line to be at least the size of the nominal
connection diameter of the vacuum pump's exhaust connection.
Piping to the pump must be suspended or supported.
– Physical forces from the piping system must not be allowed to act on vacuum
pumps.
Lay piping from the pump sloping downward so that no condensate can flow back into
the pump; otherwise fit a condensate separator.
– If an air trap is created in the system, then a device for draining condensation water
must be provided at the lowest point.
5.5
Connecting an external turbopump
Depending on the configuration the turbopump can be operated separately from the
pumping station. Please observe the following installation information!
Install the turbopump according to its operating instructions.
Open the casing of the pumping station, if necessary.
Extend necessary control leads for the electronic drive unit of the turbopump using
Pfeiffer Vacuum accessories.
Connect the control leads to the electronic drive unit.
5.5.1
Connecting the high vacuum side
Install the high vacuum flange in accordance with the instructions in the operating
manual of the turbopump.
Ensure the greatest possible cleanliness when installing any high vacuum parts. Un-
clean components prolong the pump-down time.
Observe the minimum strength of 170 N/mm
2
for the flange material.
5.5.2
Connecting the fore-vacuum side
Extend the fore-vacuum line between turbopump and backing pump.
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!
CAUTION
High pressure in the exhaust line!
Danger of damage to the seals and danger of the pump bursting.
Install the line without shut-off valves on the exhaust side.
Do not operate the pump with excess pressure at the inlet; observe the maximum al-
lowable pressures and pressure differences.
Operation of the turbopump with the electronic drive unit separate
The operation of the turbopump with a separated electronic drive unit is only possible
using the respective Pfeiffer Vacuum accessories.
