Duro clean IF Mode D'emploi page 10

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 problem.
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 of system and appliances that need to be cleaned to assure
iron-free water at the point of use.
Softener
It isn't uncommon that a softener was installed in an effort to remove ferrous ("clear 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 a softener to be in when
planning a system clean-up.
Prior to closing the main supply valve or turning power off to private well system and preparatory to installing the filter
system, 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 the 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 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
regeneration cycle. During backwash of softener, all iron cleaned from the resin will be washed down the drain. It is
advisable, after chemically cleaning softener, to regenerate system twice to fully restore capacity lost due to iron fouling.
Water Heater
If the water heater has been exposed to both iron and hardness for a long period of time, replacement of the heater tank
may be the only solution to prevent continued staining originating from this source.
After completing the installation of the chemical free iron filter system, clean the water heater by following these instructions:
1. Shut off energy supply to water heater and close heater inlet water valve.
2. Drain hot water tank completely. Open inlet water valve allowing heater tank to be refilled with iron-free water. Continue
flushing until water runs clear to drain.
3. If, after approximately 30 minutes flushing, water does NOT clear, terminate flushing operation. Refill hot water heater with
water and pour approximately 1/2 gallon of household bleach into top of heater tank. Allow bleach solution to stand in tank
for 20 to 30 minutes. Flush tank again until water is clear at drain. Turn energy supply on.
NOTE: If water does not clear in approximately 10 minutes, water heater should probably be replaced.
Dishwasher
Consult owner's handbook and follow manufacturer's instructions.
Toilet Flush Tanks
Prior to commencing installation of the filter system, pour 4 to 6 ounces of resin mineral cleaner Pro-Rust Out or inhibited
muriatic acid into flush tanks and bowls and let stand. When installation is completed, flush toilets several times with iron-free
water. If iron deposits or stains remain, repeat procedure until clear.
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