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SERVICE INSTRUCTIONS
ACID NEUTRALIZERS (7-LXDAN-) REPLACEMENT MINERAL INSTRUCTIONS
Q7005 Dome Plug w/ o-ring
Fill Level (2/3 of tank)
Acid Neutralizing Mineral
ACID NEUTRALIZERS, (7-LXDAN-) REPLACEMENT MINERAL
INSTRUCTIONS:
Mineral used: Calcite. Acid Neutralizers raise the pH of acidic
water. Calcite is a sacrificial mineral, dissolving in proportion to the acidity of the raw
water. Calcite is self-limiting, i.e. it corrects pH only enough to reach a non-corrosive
equilibrium. It does not overcorrect under normal conditions.
The amount of Calcite in the tank should be checked periodically. Shine a flashlight
through the tank to see the height of the mineral. The tank should be filled no more
than two-thirds full (see diagram). Typically the mineral should not be below the
halfway point in the tank.
The tank has a dome plug provided so that Calcite may be added without removing
the control valve.
CAUTION
:
Never unscrew the dome plug unless pressure is fully re-
lieved from the system. Injury and/or flooding can occur.
Before removing the dome plug, shut off the water supply and open a conditioned
water tap to relieve the water pressure on the piping. Rotate the
BYPASS
handles
to the bypass position ( see figure 2 on page 4).
• Press and hold the
REGEN
button for approximately 5 seconds until the motor starts.
• Wait until the display reads
BACKWASH
, the motor stops running, and the numbers start counting down. Unplug the
transformer so the control valve cannot cycle to the next position. This will relieve pressure in the tank.
• Unscrew the dome plug. A small amount of water will be lost from the tank.
• Adding Calcite will displace the water in the tank. Siphon out some water from the tank through the dome hole. This
will allow room to add mineral and reduce water spillage.
• Add the appropriate amount of replacement mineral through the dome hole. Pay close attention to the mineral level
when filling.
DO
NOT OVERFILL
(see diagram).
• Replace the dome plug. Lubricate o-ring if necessary using only silicone grease. Hand tighten only.
• Leaving the unit in the bypass position, turn on the water supply.
•
SLOWLY
turn bypass valve to
DIAGNOSTIC
position (see figure 3 on page 4) to allow water to slowly enter tank in
order to expel air. Flow water to drain very slowly, increasing the flow until the water runs clear. Allowing water to run
to drain for a few minutes will backwash any mineral “fines” to drain.
• When water is flowing steadily to drain, clear and without the presence of air, plug the transformer into the receptacle
to restore power. Momentarily press
REGEN
again. Display will read
RINSE
.
• Place the bypass valve in the
NORMAL OPERATION MODE
(see figure 1 on page 4). Allow the control valve to finish
the
RINSE
cycle and automatically advance to the
FILTERING
position.
• Visually check the dome plug for any leakage.
Checking the mineral level once a month for the first few months of operation should provide a good indication as to how
frequently the Calcite will need to be replenished.
Calcite will add hardness to the original hardness of the raw water. This must be considered when programming the hard
-
ness level for a water softener located downstream of the acid neutralizer. As a rule of thumb, an increase of 3 to 5 grains
of hardness can be expected to raise the pH by one point on the scale, e.g. from 6.0 pH to 7.0 pH.
Calcite is recommended for raw water pH range 6.0-7.0
Note: 1 cu. ft. of Calcite weighs approximately 90 lbs.
Super Mix (80% Calcite/20% Corosex) is recommended for high flow rates and raw water pH range 5.5-6.0
Summary of Contents for 7-LXDAN-1B
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