Waterco Chemflo Plus, User Manual

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How it works:
The continuously analyses pool water chemistry while your pool system is
running. The base model has two dosing pumps that dose liquid chlorine and acid to the
pool water flow in response to the water analysis from the probe.
The can also be used to control a Salt Water Chlorinator with and without
extra available dosing from the chlorine dosing pump. The chlorine dosing pump is always
available for manual dosing.
When both the SWC and the chlorine dosing pump are enabled the dosing pump is
activated at an ORP approximately 50mV below the set point. It will then will dose regularly
until the ORP climbs to a point that the SWC can take it the rest of the way. This results in
the doser only covering extra high chlorine demands.
Note: the filter system should always be running when the pool is being used.
Oxidation Reduction Potential
The measures how much chlorine is in pool water by measuring the ORP of
the water.
ORP stands for Oxidation Reduction Potential. Chemicals like chlorine destroy pathogens
(eg harmful bacteria) in water by oxidising them.
The level of oxidation available in the water can be measured chemically with an ORP
sensor contained in the
’s multielectrode (probe). This produces a voltage
related to the ORP of the water, which is a measure of the effectiveness of chlorine in the
water.
Varying the ORP will affect how long it takes to destroy harmful bacteria in pool water. For
example, if ORP is maintained at 650mV, E-coli type bacteria will be destroyed in around
one second. However, if the ORP is lowered to 550mV, the same organisms may take up
to 2 hours to be eliminated.
pH Control
When chlorine is added to water the pH always changes
– this is because chlorine is not a
neutral chemical. The pH will slowly rise as chlorine is added to the water. A rise in pH
greatly reduces the effectiveness of the chlorine as a sanitiser, so it is important to ensure
that the pH remains in the correct range.
The pH of the water can be lowered by the addition of acid
– and your does
this automatically. The multielectrode (probe) measures the pH of the water
and doses the pool with small amounts of acid to keep the pH in the correct range.