Etatron HD-PH Instrucciones página 33

(Figure 6). Whenever
the pump is dismantled
from the plant, you will
be well advised to
replace the caps on the
connectors to avoid
residual liquid being
spilled. Before attach-
ing the delivery hose to
the plant, prime the metering pump by going through the sequence shown in
Figure 7. Before finalizing the installation of the delivery hose, make sure that
the pump strokes will not cause it to move and bump into rigid bodies. In case
of priming difficulties, use a normal syringe to suck liquid from the delivery con-
nector while the pump is in operation, continuing until you actually see the liq-
uid rise in the syringe. Use a short length of suction hose to connect the syringe
to the delivery connector. In case of a pump equipped with an run-off valve, fol-
low the specific instructions.
g. Try to keep both the suction and the delivery hose as straight as possible,
avoiding all unnecessary bends.
h. Select the most appropriate injection point on a pipe of the plant to be treated
and there fit a 3/8" female steel gas connector. This connector is not comprised
in the supply. Screw the injection valve to the gas connector, inserting a gasket
as shown in Figure 8. Then connect the delivery hose to the conical connector
on the injection valve and fix it with the supplied clamp G. The injection valve
als acts as a non-return valve.
N.B. The gasket ring D must not be removed.
INJECTION VALVE INSTALLATION
DIAGRAM FIGURE 8
A - Plant into which
the
injection is to be made
C - Injection valve
M - Conical connector
for attaching the deli-
very hose
N - 3/8" female steel
gas connector
G - Hose attachment
clamp
T - Polyethylene hose
D - Gasket ring
33
fig.6
fig.7
fig.8
ENG