Pfeiffer DUO 3 - Connecting exhaust side

Installation and operation of accessories
Pfeiffer Vacuum offers a series of special, compatible accessories for its rotary vane
pumps.
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You can find information and ordering options for approved accessories online.
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Described accessories are not included in the shipment.
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Fig. 6: Vacuum connection with flange connection
1 Intake line 3 Vacuum flange
2 Centering ring with cone strainer and o-ring 4 Clamping ring
Procedure
1. Remove the protective cap from the vacuum flange.
2. Make sure that the centering ring with cone sieve and the O-ring are in the vacuum flange.
3. Establish the shortest possible connection between vacuum pump and vacuum chamber.
4. Choose a minimum vacuum line cross section equal to the nominal diameter of the connection
flange.
5. Depending on the pump type, use PVC or metallic hoses with flange connections from the Pfeiff-
er Vacuum component shop.
6. Support or suspend the piping to the vacuum pump so that no piping system forces act on the
vacuum pump.
7. Connect both flanges with a circlip.
8. Use a separator or filter from the Pfeiffer Vacuum line of accessories if necessary.
5.3 Connecting exhaust side
CAUTION
Danger of injury from bursting as a result of high pressure in the exhaust line
Faulty or inadequate exhaust pipes lead to dangerous situations, e.g., increased exhaust pressure.
There is a danger of bursting. Injuries caused by flying fragments, the escaping of high pressure, and
damage to the unit cannot be excluded.
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Route the exhaust line without shut-off units.
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Observe the maximum permissible pressure of 1,500 hPa (absolute).
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Observe the permissible pressures and pressure differentials for the product.
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Check the function of the exhaust line on a regular basis.
Installation
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