Henden HPHDB, Installation & Owner'S Manual

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6 | HENDEN INSTALLATION & OWNERS MANUAL
Henden pH Dosing Pump Installation Manual
3. INSTALLATION RECOMMENDATIONS
3.1 Recommendations
•
Install the Henden pH Dosing Pump in a dry place and
well away from sources of heat and in environments not
exceeding 45°C. The operating minimum temperature
depends on the liquid to be pumped, bearing in mind that
it must always remain in a liquid state.
•
Carefully observe any standards in force in your
state, territory or country, as to electrical installation
regulations and requirements.
•
The Henden pH Dosing Pump should be in operation only
when your filtration pump is running.
3.2 Mounting the Pump
3.2.1 Bracket
1. Locate the bracket in the space chosen and mark the holes
2. Drill the holes as required (3mm for timber walls & 6mm for
masonry walls)
3. Fix the bracket to the wall
4. Slide and secure pump into the bracket
Ø4mm
Ø6mm
35mm
Fig. 4
3.2.2 Mounting of the Probe Clamp
Choose a mounting location on your pipework that is:
1. Prior to your salt cell
2. BEFORE the placement of the acid injection point
3. Ensure the probe clamp lead is within reach of the
Henden pH Dosing Pump controller
Fig. 5
O-ring
Nut
Pierce the top wall of the pipe work through the clamp:
- 14 mm for the electrode/pH probe.
Fig. 6
E
E
3.2.3 Mounting of the pH Probe into the
Probe Holder
After removing the protective cap from the probe, you
need to insert all the parts as shown in the Fig.7.
Before inserting the probe into the pipe make sure you
calibrate the probe (refer to 5.1 Calibration Procedure for
instructions).
Once the probe has been constructed as indicated in Fig.7,
tighten the probe nut without crimping the probe body.
Push the probe approximately 20mm into the pipe work so
that the probe tip is approximately halfway into the pipe
work. Connect the probe lead to the BNC terminal on the
pump. (Fig8)
Nut
Disk brake
Washer seat
O-ring
Bracket
Fig. 7
WARNING
•
It is important to keep a minimum
distance of 200mm between the probe
“C“ and the injection valve “E”
•
The injection valve “E” must be
placed last in the pipework hydraulic
installation
•
In the case of an installation with
redox and pH regulation, it is advised
to put the two sensors side by side
and the pH injection before chlorine
injection to minimise the risk of scale
deposition on the chlorine injection
•
For optimal service life of your
peristaltic pump tube, it is advised
not to exceed a pressure of 1 bar and
under no circumstances exceed a
pressure of 1.5 bar
•
The pH probe must be located before
any other device such as a heater or
an electrolyser