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HC100/N/240717/NW
2.5 Hydraulic connection
After the mounting of the pump, proceed with the hose connections.
Suction:
connect the suction tube (PVC soft clear) to the foot filter that is supplied and put it in the hose
clamp, lock the tube closing the nut. If it utilises a level probe, this one has to be connected to the filter
through the support that is supplied. Put the foot filter into the liquid suction lift tank. Connect the other
extremity to the suction of the pump (lower part of the pump head), unscrew the nut from the nipple, take
off the plastic white disk situated on the tube connection. Pass the tube through the nut and the adaptor
for the 4x6 tube with a simultaneous action of pressing and rotating, put the tube on the nipple conical
connection (hose clamp); lock up everything by closing the nuts well.
Delivery:
connect the pump to the plant always through the injection valve (1/2”Gm) that is supplied with
the installation Kit. Fit a Gf 1/2” threaded connection on your water supply line at the point where you
require chemical injection, Use Teflon/PTFE tape on the injection valve and screw into the pipe. Unscrew
the nut, put the discharge tube (stiff MDPE) on the hose clamp of the nipple’s valve, lock everything by
closing the nut fully.
Connect the other end of the tube to the delivery valve of the pump (upper part of the pump head), by
repeating the instructions above.
Purge:
connect the other hose (2 mt PVC clear) to the hose nipple situated on the pump head bottom
right, while the other end is fitted into your chemical drum/ tank.
INSTRUCTION FOR PRIMING
To prime the pump in case of high injection point pressure, turn the purge knob towards you until the
pump head is completely full. Screw down again the knob.
ATTENTION!!
If it is necessary to take the pump off the plant, it is important to put the white disk in
again, so as to avoid any exit of the liquid contained in the pump head from dripping
out. - During the installation ensure that the discharge tubing is fixed correctly so as to
avoid any rubbing against hard bodies. Avoid to many bends both on discharge and
suction tubing.
- Connect the pump to the plant always through the injection valve (1/2”Gm) supplied
with the installation kit.
- Connect the soft PVC tubing only in suction (on the foot filter side), and connect the
PE tubing in the delivery side by verifying that the cut of the tubing is clean and that
lateral crushing is not caused; it is advisable to utilise a cutter instead of scissors.
2.6 Operation
The metering pump is activated by a Teflon diaphragm mounted on a piston enclosed in an electromagnet,
which is fed by continuous current producing a square wave moving the piston thus, a pressure is
produced in the pump head with an expulsion of liquid from the discharge valve. Once the electric impulse
is off, the return of the piston is spring assisted thus producing the suction action to the initial position,
with a recall of liquid through the suction valve. The material used for the construction of the pump makes
it particularly suitable for aggressive liquids.
We suggest you always check chemical compatibility tables or our technical department, before use.
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