Kongskilde SupraVac 2000 Manual page 34

Blowing direction
Do not attempt to blow material downwards, where
gravity will add to the conveying speed. Damage to the
material and pipes (bends) will occur due to the high
speed.
Flexible piping
Do not attempt to blow through flexible down pipe sec-
tions. Damage to the material and to the flexible pipe
will occur.
Supports
Max. 4 m (13 ft)
The pipeline shall either be supported or suspended at
a distance of max. 4 m. Furthermore, it is recommen-
ded to support the pipe as close to the bends as pos-
sible.
Right
Flexible suction pipe
When emptying silos and on-floor storage plants with
suction equipment, do avoid bending the flexible pipe
in a sharp curve. The sharper the pipe is bend, the
Right
34
Wrong
OK clamp
OK pipe
Wrong
Connections and centering
When connecting the pipes, bends and other material,
which are designed for high speed conveying, it is
important to centre the pipes as precisely as possible
at the connecting points.
Do not rely on centring the pipe with the clamps alone.
The clamp is designed for pressing the OK-pipe ends
very hard together in order to ensure a very high tight-
ness. This causes the friction between the pipes to
become so high, that the clamp is unable to centre the
pipes.
Check gap between clamp and pipe to ensure it is
similar on both sides.
Check the pipeline visually to secure a straight line. If
the pipes are not centred, the wear on the connection
points result in a fast wear out.
If a completely tight connection is required, the con-
nection can be winded with sealing tape before instal-
ling the clamp.
Tape to seal
the joint
Sealing tape
Flow direction
Heavy wear
harder the wear will be and the lower the capacity
obtained. It is not necessary to install the flexible pipe
right after the suction head.
Condensed water in outdoor piping systems
With outdoor piping systems condensed water will
arise in the pipes especially in the winter time. There-
fore it is recommended to disconnect a pipe or a bend
at the lowest points, when the system is not to be used
for a longer time in order to avoid water accumulation
and rust.