Installation
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300750767_002_C3 - 12/2020 - © Leybold
3.3.2 Exhaust Lines
Always operate the pump with a connected exhaust line. The exhaust line
must be designed for the specific kind of application. Lay permanent piping
to the outside or connect it to a suitable exhaust gas abatement system.
Connect the exhaust line to an abatement system with sufficient throughput,
if required by the process. The DRYVAC pumps will be switched off because
of overpressure if the abatement system is too small.
Connect the exhaust lines to the pump system’s exhaust connections. Use
bellows to eliminate mechanical tension in the line.
The exhaust line should have the same or larger diameter than the exhaust
flange and 2.0 mm min. wall thickness.
The exhaust line must be able to withstand 1.3 bar and 150 °C.
Keep the exhaust line free of deposits. If the exhaust flow becomes restrict-
ed, deposits could collect in the DRYVAC. In order to prevent deposits in the
exhaust lines it may be necessary to heat the exhaust lines.
Avoid connecting the pump system together with oil-sealed pumps to one
central exhaust system. Using a common exhaust line could result in con-
densate back streaming into the DRYVAC or in dust adhering in the exhaust
line.
In the case of wet processes avoid the ingress of any liquid into the pump.
Regularly check the tightness of the exhaust lines!
NOTICE
4x 90°
45°
30°
90°
4x M8
8x M10
Ø 110
30°
12x 30°
(=360°)
(=360°)
Fig. 3.3 Intake flange
