7

Instructions for Adding IC pH

Correction Media

See Figures 1, 2 & 3 on page 8..
1. Place Iron Curtain System on bypass. (Close inlet and
outlet valves and open bypass valve.)
2. Relieve pressure by manually advancing timer to back-
wash position (see page 10). Unplug control valve after
valve is shifted into backwash position and piston has
stopped moving. After pressure is relieved, proceed.
2A. If your type “A” Iron Curtain filter is equipped with an
optional “dome hole and bottom drain” proceed as fol-
lows otherwise advance to step three:
a. After pressure is relieved remove the dome
plug by turning counter clockwise. Open the
bottom drain and allow approximately 15 inches
of water to drain out.
b. Measure down through the dome hole to deter-
mine media level. The media level may be as low
as 1/2 of the total tank height or as high as 2/3 of
the total tank height.
c. Add pH correction media and fill to a maximum
level of 2/3 of the total tank height. Approximately
17-18 inches down from the top of the tank on an
IC-12 or IC-10 respectively.
d. Replace the dome hole plug being cautious not to
cross-thread. Check the o’ring seal to be sure it
is clean from foreign debris. Hand tighten only,
plus approximately 1/8 of a turn with a wrench.
Be careful not to overtighten causing damage to
the threads.
e. Proceed to step 11.
3. Remove the control valve from tank (see page 14).
Determine if plumbing is rigid and able to support the
weight of the control valve assembly.
If the plumbing is rigid and able to support the weight of
the control valve assembly:
• Remove the two adapter base screws and slide the tank
away from the control valve and plumbing so it is easier
to work on.
If the plumbing is unable to support the weight of the
control valve assembly:
• IC-10A: Loosen the union nuts on the inlet and outlet and
disconnect plumbing. Loosen the fitting nuts on back of
air recharge and air bleed-off valves and remove tubing.
Loosen the fitting nut on drain line flow control housing
and remove tubing. Loosen the screw holding the drain
line flow control and disconnect the drain. Slide the tank
unit away from the plumbing so it is easier to work on.
• IC-12A: There must be a union installed on the inlet,
outlet, and drain line of control valve to proceed. If not,
they must be installed prior to proceeding. Loosen
the union on the inlet, outlet, and drain and disconnect
plumbing. Loosen the fitting nuts on back of air recharge
and air bleed-off valves and remove tubing. Slide the unit
away from the plumbing so it is easier to work on.
Remove the two adapter base screws and remove the
control valve assembly from the tank.
4. Remove the adapter base. Place the two adapter base
screws back in the adapter base and thread in until they
are flush with the bottom of the adapter base but not
touching the top of the tank. Carefully place a pry bar
5. Plug in the electrical cord from the Iron Curtain Control
Center. In approximately four minutes, the aeration
pump will automatically turn on and begin to pump air
into the aeration tank. Allow the Iron Curtain Control
Center to finish the remaining cycles automatically
(approximately 25 minutes). Make certain that the
filter control is in the Service Position (piston all the
way out). Do NOT backwash filter at this time. Set time
of day. Time of regeneration is preset for 12:00 a.m.
Regeneration frequency is preset for every three days.
(Type A Filters are preset for every other day.) If you
wish to reset any of these factory settings, see page 9.
6. Make sure the filter will not regenerate within 24
hours of installation to allow the filter media to
absorb water and not be backwashed out.
7. Open the outlet valve on the filter, then open the nearest
cold water faucet and allow the water to run until the air
stops spurting and discoloration is gone. Note: It is
normal for aerated water to appear effervescent.
8. If the water softener was placed on bypass, close the
bypass valve and place the softener in service.
9. Open the shut off valve to the water heater.
Regeneration Frequency
Your Iron Curtain Filter System contains a special filter media
mixture which allows it to filter iron longer than standard filters
between backwash regenerations. However, it is our recom-
mendation to leave factory settings as is, unless you wish to
backwash more frequently. You will have to backwash more
frequently if you have iron bacteria, hydrogen sulfide, and/or
manganese present in your water supply. You will also have
to regenerate more frequently if you notice iron bleed through
before the end of the normal service run.
Specifications
When supply water has a pH between 6.0 and 6.9, a Type A
filter system with sacrificial media is generally used. To
insure top performance this media needs to be replenished
periodically depending on water characteristics and usage
patterns, generally every 6 to 18 months. This can be
determined by testing the pH of the water at a cold filtered tap
or by physically measuring the amount of freeboard (See
Figure 8, page 4.) If the pH is 7.0 or greater, media does not
need to be added. If the pH is below 7.0 and/or the amount
of freeboard is greater than 18" for IC-10A or 17" for IC-12A
(see step 5), media needs to be added. If media needs to be
added contact your dealer and ask for the following:
Part Number 1-A8011
.66 cubic foot IC pH Correction Media (50 lb. bag)
TYPE A IRON CURTAINSYSTEMS (Optional)
IC-10 10"x54" 1.5 3/4" 5.0 5.0 26"x70"x16"
IC-10A 10"x54" 1.5 3/4" 5.0 5.0 26"x70"x16"
IC-10+ 10"x54" 1.5 3/4" 5.0 5.0 26"x70"x16
IC-12 12"x52" 2.0 1" 7.0 8.0 30"x68"x18"
IC-12A 12"x52" 2.0 1" 7.0 8.0 30"x68"x18"
IC-12+ 12"x52" 2.0 1" 7.0 8.0 30"x68"X18"
Model
Filter &
Aeration
Tank
Size
Floor
Space
(WxHxD)
(2) Back-
wash
Rate
GPM
Max.
Service
Flow
GPM
(1)
Inlet/
Outlet
Media
Cu. Ft
(1) Aeration Head and Check Valve have 1” Inlet/Outlet.
(2) Water temps above 60° F will require a higher backwash rate. Consult factory.