Hydrotech 5600 SE Valve Chem Free Iron Filter Operation Manual - Manual (Page 4)

Control Operation During Programming
The control will only enter the Program Mode with the valve in Service. While in the Program Mode, the control will
continue to operate normally, monitoring water usage and keeping all displays up to date. Control programming is stored
in memory permanently, eliminating the need for battery back-up power.
Control Operation During a Power Failure
During a power failure, all control displays and programming will be stored for use upon power re-application. The
control will retain these values for years, if necessary, without loss. The control will be fully inoperative and any calls for
regeneration will be delayed. The control will, upon power re-application, resume normal operation from the point where
it was interrupted. An indication that a power outage has occurred will be an inaccurate Time of Day display.
Before Installation
Inspection and Handling of Your Chemical Free Iron Filter
Inspect the equipment for any visible shipping damage. If damaged, notify the transportation company and request a
damage inspection. Damage to cartons should also be noted.
Handle the filter unit with care. Damage can result if the unit is dropped or set on sharp, uneven projections on the floor.
Do not turn the filter unit upside-down.
NOTE: If a severe loss in water pressure is observed when the filter unit is initially placed in service, the filter tank may
have been laid on its side during transit. If this occurs, backwash the filter to "reclassify" the bed.
Iron (Fe)
Iron concentrations as low as 0.3 ppm can cause staining. The iron concentration, the flow rate demand and the
consumption rate of the water are used to determine the size of the basic filter system. The higher these factors are, the
larger the required system. The chemical free iron filter is capable of filtering out soluble iron (also known as "clear
water" or ferrous iron) and precipitated iron (also known as "red water" or ferric iron). There is no apparent upper limit of
iron concentration for the chemical free iron filter but special care must be taken when selecting a filter model if your
water has a combination of high iron, very low pH and/or manganese levels above 0.5 ppm.
Manganese (Mn)
The presence of manganese can be bothersome even for a chemical free iron filter. As little as 0.05 ppm of manganese
can produce a brownish or black stain. The ability of the chemical free iron filter to remove manganese depends on its
concentration and the pH of the water.
pH
The pH of water measures its acidity or its alkalinity. Water with a pH of less than 7.0 is acidic, more than 7.0 is alkaline
and 7.0 is neutral. The lower the pH value is below 7.0, the greater the acidity and higher the pH value is above 7.0, the
more alkaline. Acidic water is corrosive to pipes, appliances, etc. A pH of 7.0 or higher facilitates iron removal.
Tannins (Humic Acid)
Tannins (also known as humic acid), which are present in some water supplies, are the result of decaying vegetable
matter. If the tannin concentration is above approximately 0.5 ppm, it will form a sticky coating on the media, thus
rendering it incapable of filtering the iron. A chemical free iron filter is not recommended for this situation. If the tannin
concentration is less than 0.5 ppm, a chemical free iron filter may be installed.
Hydrogen Sulfide (H
2
S)
Hydrogen sulfide (often referred to as sulfur) is easily detectable by its objectionable "rotten egg" odor. Sulfur corrodes
iron, brass, copper and silver. A chemical free iron filter is not recommended when hydrogen sulfide is the only water
problem, although it is capable of removing sulfur in concentrations of up to 3 ppm. Whenever hydrogen sulfide is
present, backwashing must be performed at more frequent intervals and the pumping system must include a standard
air-to-water pressure tank with an air relief valve.
2