Henden HPHDB, Инструкция по установке и эксплуатации

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Henden pH Dosing Pump Owners Manual
HENDEN INSTALLATION & OWNERS MANUAL | 9
5.3 Settings
Functions Factory Settings
Unit of measure pH
Set point 7.4
Type of regulation
Acid- reduce the pH by dosage of an
acid (pH-)
pH 7 calibration To an accuracy more than 0.2 pH
Proportional regulation* Factory function
*Proportional: Dosage adjusted according to different
cycles time/breaks. At the approach of the set point, the
pump reduces its time of dosing.
5.3.1 Adjustment of the Set Point
CAL SET
pH -
Pressing the SET button displays the current set point value.
CAL
SET
pH -
To change the value of the set point, press SET and press
CAL by pulse. Each pulse changes the pH value by 0.1 pH,
between 7.0 and 7.6.
5.4 Operating Principle
The Henden pH Dosing Pump adjusts its dosage in
proportion to the demand. It will dose less if the displayed
measure is near the set point. In normal operation, the
pump will increase its ‘non operational’ time period
proportional to the required dosage demand. That is why
the device often has the pump off.
This is normal.
Adjust the pH slowly to preserve the natural quality of
your water.
After 30 minutes without pressing the keys, the backlight
turns off to save energy. A short press on
SET or CAL
turns it on again.
6. MAINTENANCE
6.1 Replacement of the Peristaltic Tube
Follow steps 1 to 9 as shown.
1.
5.
9.
Fig. 13
2.
6.
3.
7.
4.
8.