Hydrotech 2510 Valve Chemical Free Iron Filter Operation Manual - Manual (Page 8)

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Special Instructions for Split-Stream and Public Water Supply Type Installations:
For a split-stream type installation, a secondary pressure tank must be installed as in Fig. 2. On a public water supply
type installation, a pressure tank must be installed as in Fig. 3. It is recommended in both applications to use a standard
air-to-water type pressure tank with an air-relief valve, of a capacity that would normally be installed of the water system
were a standard private well type. Also note that in both applications a normally-closed solenoid valve is required. Follow
the standard installation instructions above with the following additions and modifications.
1. Install pressure tank (secondary pressure tank in Fig. 2) as indicated by appropriate diagram.
2. Install normally-closed solenoid valve after water meter and after a line split for untreated water (if there is one).
3. On both types of installation, install the hydro-charger between pressure tank (secondary pressure tank on split-
stream type installations) and normally-closed solenoid valve.
4. Install a pressure switch after the hydro-charger and wire it to the solenoid valve (secondary pressure switch on split-
stream). Set high pressure on pressure switch (which controls opening and closing of solenoid valve) to 3 psi lower
than low pressure on primary pressure switch. Example: if primary pressure switch is set at 40/60 psi, set secondary
pressure switch high at 37 to 38 psi.
For public water supply type installations, contact your local water department or plant operator and ask what the nor-
mal low system pressure is. Set high pressure on pressure switch 2 to 3 psi lower than this figure.
NOTE: Failure to set the pressure switch as described above will not allow proper closing of the solenoid valve during
periods of low system pressure.
Section 4: Plumbing System Clean-Up
The following procedures are guidelines only but have proven successful in most instances. Under no circumstances
should any procedure outlined below be followed if contrary to the appliance manufacturer’s instructions. Should there
be any questions concerning the advisability of performing a procedure, it is strongly recommended the manufacturer’s
authorized service outlet be consulted prior to performing the procedure.
The plumbing system and water using appliances that have been exposed, even for a short time, to iron-fouled water
need to be cleaned of the precipitated iron that has collected in them or iron bleed (staining) will continue to be a prob-
lem.
Depending on the amount of iron in the water and the length of time the water system has been exposed to iron fouling,
select from the following procedures those that apply to the type system and appliances that need to be cleaned to
assure iron-free water at the points of use.
SOFTENER
It isn’t uncommon that the softener was installed in an effort to remove ferrous (“clean water”) iron from the water supply.
Typically, a softener will remove some ferrous iron until the resin bed becomes fouled to the extent that it will lose both
hardness removal capacity and the limited capacity for iron removal. This is the condition to expect the softener to be in
when planning a system clean-up.
Prior to closing main supply valve or turning power off to a private well system and preparatory to installing the filter sys-
tem, do the following:
1. Disconnect brine draw line from the brine cabinet and place the loose end into a five gallon plastic pail filled with a
solution of warm water and 4 oz. of resin mineral cleaner.
2. Manually advance control timer to brine draw position (refer to instructions provided with your softener), allow all warm
mineral cleaner solution to be drawn into mineral bed. Then immediately:
3. Close main water supply valve or turn power off to pump and proceed with filter installation. During the time required
to install filter system, iron-fouled softener resin will be chemically cleaned.
4. After filter installation is completed and final adjustments are made with the water turned on and brine draw tube
reconnected, manually reposition timer on softener to backwash position. Allow timer to perform an automatic regen-
eration cycle. During backwash of softener, all iron cleaned from the resin will be washed down the drain. It is advis-
able after chemically cleaning softener to regenerate system twice to fully restore capacity lost due to iron fouling.