aqua HC797 Manuel page 15

ENGLISH ENGLISH
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" nipple on your water supply line and after that fitting, to the
point where you require chemical injection, the injection valve out with teflon and put in into the pipe.
Unscrew the nut, put well the discharge tube (stiff Polyetilene) on the hose clamp of the nipple's
valve, lock everything by closing the nut well.
Connect the other extremity to the delivery of the pump (upper part of the pump head), by repeating
the instructions above. See fig. 7
Purge: connect another tube's extremity for the manual purge (2 mt PVC crystal) in the hose clamp
situated on the pump head lower to the right, while the other extremity is to be put into the suction
lift tank. See fig. 8
INSTRUCTION FOR PRIMING
For the priming of the pump in case of high against pressure in the injection, turn the purge knob for
a quarter or a half of round (see fig. 8) until the head pump 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 to avoid that it does not rub against hard bodies. Avoid also
use less 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), instead
connect the PE tubing in delivery 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 into a
electromagnet, which is fed by continuous current producing a square wave moving the piston thus,
a pressure is produced in the pump body with an expulsion of liquid from the discharge valve. Once
the electric impulse is over, 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 in any case to use the compatibility tables or our technical department.
Dimensions
Series HC797 pump - wall mounting (Fig. 1)
Series HC797 pump - base mounting (Fig. 2)
Series HC897 pump - wall mounting (Fig. 3)
Series HC897 pump - base mounting (Fig.4)
Series HC997 pump - wall mounting (Fig. 5)
Series HC997 pump - base mounting (Fig.6)
Connection and exploded views
Tubing connections on pump head (Fig. 7)
Manual purge (Fig. 8)
Low level switch connection (HC897) (Fig. 9)
HC797 series description (Fig. 10)
HC897 series description (Fig. 11)
HC997 series description (Fig. 12)
HC797-HC897-HC997 Pump head ball (Fig. 13-14)
28/05/13 Rev.2.6
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