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3. Installation
3.1. Preparations For Installation
Do not carry out any unauthorised conversions
or alterations to the turbopump.
– The maximum permissible rotor temperature of the pump is
90 °C. If the vacuum chamber or parts in the vacuum
chamber are heated must be fitted if necessary, suitable
shielding in the vacuum chamber before the turbopump
(constructional suggestions available on request).
– Only remove the blank flange from the high and fore-vacu-
um side immediately before connection.
– On Turbopumps the lubricant reservoir is already fitted and
filled.
– Where magnetic fields of > 4 mT are involved suitable
shielding must be provided (available on request).
– If the pump is baked out, the heating sleeve and the body
of the pump must be insulated to prevent burns from
accidental contact.
– In the event of a sudden standstill of the rotor, torques of
up to 260 Nm (TMH/U 064) and 270 Nm (TMH/U 065) can
arise and these must be taken up by the turbopump and
frame. Pumps must be anchored as follows:
– ISO flange with 4 bracket screws, or
– CF flange with the complete set of M8 screws, or
– Underside of the pump with 4 screws M5,
screws quality 8.8.
3.2. Installing The Pump,
Connecting The High Vacuum Side
Important
The utmost cleanliness must be observed when fitting all high
vacuum parts. Unclean components prolong the pumping
time.
Using the splinter shield
The use of a splinter shield in the high vacuum flange
protects the turbopump against foreign bodies coming from
the vacuum chamber but does reduce the volume flow rate of
the pump by approximately 15%.
For fitting splinter shields please refer to “Fitting the splinter
shield”
The high vacuum side can be flanged directly to the vacuum
chamber or via a bellows or a vibration compensator (acces-
sory).
Connecting via a bellows
If the high vacuum side is to be flanged via a bellows, the tur-
bopump must be secured for example via the holes on the
underside of the turbopump (see ”Dimensions”)
The fastening must be able to withstand the torque referred
to in Section 3.1.
Permissible installation positions for the turbopump
The maximum loading capacity of the high vacu-
um flange is 200 N (equivalent to 20 kg).
Assymetric loading on the high vacuum flange
must be avoided.
With horizontal pump installation and oil-sealed backing
pumps (e.g. rotary vane pumps) the fore-vacuum flange of the
turbopump must be aligned vertically downwards (maximum
deviation ±20°), otherwise the turbopump could become
dirty.
No forces from the piping system must be
allowed to act on the pump where turbopumps
are anchored.
Suspend or support all pipes to the pump.
Connecting via a vibration compensator
The maximum permissible temperature at the
vibration compensator is 100 °C.
Where a vibration compensator is in use, a freely suspended
turbopump can be flanged onto the vacuum chamber.
Additional fastening is unnecessary.
Directly flanging the pump
