Refill First is only available for single tank "L" and twin
parallel "P" systems.
The 764 control allows users to select when the refill cycle
occurs. When Pr = 0 (default) refill occurs immediately after
fast rinse. When Pr = 1 refill will not occur until just before a
regeneration. This allows for a “dry” brine tank.
If refill first is selected, the valve will move to refill two hours
before the start of backwash. After refill is complete, the valve
moves back to service for a two-hour brine make-up time.
Regeneration then follows as normal, skipping refill.
By default, time of regeneration is set to midnight after refill
first is selected.
NOTE:
The tank in service (on-line) cannot be regenerated
while the other tanks are isolated. Water for
backwash would not be available.
MANUAL REGENERATION OPTIONS
The 764 control features several options that offer additional
flexibility for manually regenerating the conditioner. On
alternating systems the tank in standby will move through
regeneration to service. The tank in service will move through
regeneration to standby. On parallel systems, the tank with the
lowest remaining capacity will regenerate.
Delayed Manual Regeneration
Press and release the REGEN button to start a delayed manual
regeneration. The Regeneration icon on the display will flash
indicating a regeneration will start when the time of day
reaches the programmed time of regeneration. Pressing the
REGEN button again will turn off the regeneration icon and
cancel the delayed regeneration.
Immediate Manual Regeneration
Pressing and holding the REGEN button for three
seconds starts an immediate manual regeneration. A
solid regeneration icon will be displayed. The control will
immediately begin a regeneration on the tank in service.
Delayed Second Regeneration
Pressing and releasing the REGEN button while the control is
in regeneration will program the control for a delayed second
regeneration. A flashing x2 icon next to the regeneration icon
will appear, indicating a second regeneration will start when
the time of day reaches the programmed time of regeneration.
The delayed second regeneration will be performed on the
new tank in service. For alternating and parallel systems, each
tank will regenerate once.
Double Immediate Manual Regeneration
Back-to-back manual regenerations are initiated by pressing
and holding the REGEN button for three seconds while the
control is in the regenerating mode. A solid x2 icon next to
the regeneration icon will appear indicating a second manual
regeneration will start immediately after current regeneration
is complete. For alternating and parallel systems each tank
will regenerate once. Single tank systems will regenerate
twice back-to-back.
During a Regeneration
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A "C#" is displayed to show the current cycle.
•
Total regen time remaining is displayed on the screen.
•
Press and hold SET to show the current cycle time
remaining.
To Advance Regeneration
1. Press and hold SET - showing current cycle time.
2. Simultaneously press SET and UP to advance on the cycle.
An hourglass will display while the cam is advancing. When
the cam reaches the next cycle, "C2" will be displayed.
3. Repeat SET and UP to advance through each cycle.
4. Press and hold SET and UP for five seconds to cancel
the regen. An hourglass will flash once cancelled. The
camshaft will advance to home, this may take one to two
minutes.
Viewing Cycle Times
1. Press and hold the UP and SET buttons for three seconds
when the control is in the "in service mode" to access
the "cycle time display mode". The display will show a
small "c" followed by a number in the lower portion of the
display.
2. Press the UP and DOWN buttons to display the
programmed cycle time.
3. Press the REGEN button to exit the "cycle times display
mode".
PROGRAM RESET
The 764 control can be reset to original factory parameters
when viewing the H0 parameter. Press and hold SET and
DOWN simultaneously for five seconds. H0 and the system's
set resin volume (or "F" mode) will be displayed. Press and
hold the SET button for three seconds while H0 is displayed.
Release the button. All settings except for Time of Day and Day
of Week will be reset. The 764 Logix control will now display
the valve and system type. Refer to Level I programming.
NOTE:
After any control reset (valve type or system
change, etc.) it is necessary to initiate a manual
regeneration and quick cycle through it. This will
ensure the control and cam are synchronized. If
not synchronized Err# will display and the control
will drive cams to the correct position for valve and
system type programmed.
REFILL-FIRST OPTION
AUTOTROL
®
Logix 764 Control Performa Cv Series Valves (273, 278) Service Manual
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