Elmo Rietschle S-VSI 300(44) - Manual (Page 18)

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Installation
5.3 Connecting pipes
a) Vacuum connection at (Fig. 2/A, 3/A).
NOTICE
Damage to the threaded inlet connection
may result from excessive torque during the
installation of the process piping. Use only the
sufficient amount of torque to obtain a sealed
connection.
Small diameter and excessive length of piping
may reduce the pumping capacity. Contact
Engineering for pipe size recommendations.
b) The discharged air can be blown out through the
exhaust silencer at (Fig. 3/B) or conducted away
using a hose or a pipe.
NOTICE
The air vent (Fig. 3/B) must not be closed or
restricted.
Back pressure on the discharge port is only
permissible up to:
S-VSI (44) 10 Hp < 2.9 psi
Prevent liquids accumulating in the vertical
exhaust line by installing a drip leg.