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ADDITIONAL PROGRAMMING INFORMATION AVAILABLE FROM
LANCASTER WATER TREATMENT UPON REQUEST.
INCLUDES: 7-DAY OPTION, REGENERATION CYCLES, TIMES AND 50 Hz.
ACID NEUTRALIZERS, (7-LETDAN-):
Mineral used: Calcite. Calcite will dissolve in proportion to the amount of acid in the raw water.
The amount of calcite in the tank should be monitored and replaced periodically. A tank with a dome plug is provided so that calcite may
be added without removing the control valve. To check level of calcite in the mineral tank
shut off water supply to the filter
. Press and
hold the ▲ and▼ buttons until the filter goes into backwash. Unplug valve from power supply. This will relieve the pressure in the tank.
Remove hexagonal dome plug. A small amount of water will be lost from the tank. Insert a dipstick into the dome hole until the stick
reaches mineral level. Mark and remove the stick. Measure the marked distance on the stick. This number should never be less than
16”. Replace calcite before the mineral level is 24” from the dome hole. Adding calcite will displace the water in the tank. This water may
be siphoned out to reduce spillage. As each installation will use a different amount of calcite, monitoring the mineral level once a month
for the first few months of operation should give a fairly good indication as to how frequently the calcite will need to be replenished. Re
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place the dome plug. Turn on the water supply to the neutralizer. Plug valve into power supply. Allow water to run to drain for a couple
of minutes to allow “Fines” to backwash to drain. Press and release the ▲ button. Display will read
C4
. Press and release the ▲ button
again. Time of day will need to be reset.
A pH test kit may also be used to monitor the pH level to help determine when mineral needs to be replenished. Calcite will add approxi
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mately four (4) or more grains per gallon to the original hardness of the raw water. This should be kept in mind when figuring regenera
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tion cycle for a water softener. If a Corosex/Calcite mixture is recommended to be used (for high flow rates or very low pH level), mix
one part Corosex with four parts Calcite
BEFORE
adding to the tank.
NOTE: 1 cu ft. of calcite = 85 lbs.
IRON FILTERS, (7-LETIM-, 7-LETIMG-):
Mineral used: Birm. No chemical regenerant is required, backwash periodically. No hardness
is added to the water. For clear water iron, when the pH is less than seven (7) in the raw water, a water softener should be used in
place of the iron filter.
Note: When using Birm for iron removal, it is necessary that the water: contain no oil or hydrogen sul
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fide, organic matter not to exceed 4-5 ppm, the D.O. content equal at least 15% of iron content with a pH of 6.8 or more. If the
influent water has a pH of less that 6.8, neutralizing additives such as Calcite, Corosex or soda ash may be used prior to the
Birm filter to raise the pH. A water having a low D.O. level may be pretreated by aeration. Chlorination greatly reduces Birm’s
activity. High concentrations of chlorine compounds may deplete the catalytic coating.
COLOR, TASTE AND ODOR FILTERS, (7-LETCT-, LETCTG-):
Mineral used: Carbon. Used for removal of chlorine, color, taste, odor
and low levels of sulfur, etc. The mineral bed should be backwashed periodically, but will in time reach the maximum absorbency. When
this occurs the carbon should be completely replaced.
SEDIMENT AND TURBIDITY, (7-LETST-):
Mineral used: Filter AG. This filter will filter out dirt, silica, etc. down to the 20-40 micron
range. In most cases it has a lifetime fill and should be backwashed periodically depending on local conditions. Pressure drop is very
low.
DRIVE ASSEMBLY:
Remove the valve cover to access the drive assembly.
Disconnect the power source plug (black wire) from the PC board prior to disconnecting the motor plug from the PC board. The motor
plug connects to the two-pin jack on the left-hand side of the PC board. The power source plug connects to the four-pin jack.
The PC board can be removed separately from the drive bracket but it is not recommended. Do not attempt to remove the display panel
from the PC board. Handle the board by the edges. To remove the PC board from the drive bracket, unplug the power and motor plugs
from the PC board. Lift the middle latch along the top of the drive bracket while pulling outward on the top of the PC board. The drive
bracket has one plastic pin that fits into the hole in the lower edge of the PC board. Once the PC board is tilted about 45° from the drive
bracket it can be lifted off the pin. To reinstall the PC board, position the lower edge of the PC board so that the hole in the PC board
lines up with the plastic pin. Push the top of the PC board towards the valve. Align the upper hole on the left hand side of the PC board
with the pin and push in until the PC board snaps under the middle latch, weave the power wire into the holders and reconnect the mo
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tor and power plugs.
The drive bracket must be removed to access the drive cap assembly and pistons or the drive gear cover. It is not necessary to remove
the PC board from the drive bracket to remove the drive bracket. To remove the drive bracket start by removing the plug for the power
source. Unweave the wire from the side holders. Two tabs on the top of the drive back plate hold the drive bracket in place. Simulta
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neously lift the two tabs and gently ease the top of the drive bracket toward your body. The lower edge of the drive bracket has two
notches that rest on the drive back plate. Lift up and outward on the drive bracket to disengage the notches.
To reassemble seat the bottom of the drive bracket so the notches are engaged at the bottom of the drive back plate. Push the top of
the drive bracket towards the two latches. The drive bracket may have to be lifted slightly to let the threaded piston rod pass through
the hole in the drive bracket. Maintain a slight engaging force on the top of the drive bracket while deflecting the bracket slightly to the
left by pressing on the side of the upper right corner. This helps the drive gears mesh with the drive cap assembly. The drive bracket is
properly seated when it snaps under the latches on the drive back plate. If resistance is felt before latching, then the notches are not
fully engaged, the piston rod is not in the hole, the power wire is jammed between the drive bracket and the drive plate, or the gear is
not engaging the drive cap assembly.
SERVICE INSTRUCTIONS
