Elmo Rietschle F-CEV-D - Manual (Page 15)

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Installation
5.3 Connecting pipes
a) When on vacuum operation (F-CEV-S) connect
the suction pipe at (Fig. 2/A) and when on pres-
sure operation (F-CEV-D) connect the pressure
pipe at (Fig. 2/B).
NOTICE
Long and/or small bore pipework should be
avoided as this tends to reduce the capacity of
the blower.
Radial blowers must only be operated under
a throttled condition to avoid motor overload.
The units should not be used when not con-
nected to a system.
b) Check to ensure the intake line and pressure
connection are connected correctly.