Culligan Automatic Water Softeners - Manual (Page 8)

Culligan Hi-Flo ® 3 Softener Engineer’s Specification Page 3
The unit shall be supplied so that the valve will not allow automatic bypass of untreated water during
regeneration. The bypass shall be integral to the main operating valve body and be capable of being easily
modified to allow hard water bypass.
4.4 CONTROLS
The main operating valve will be controlled by an integral clock timer.
The controller shall sequence all steps of an automatic regeneration and automatically return the softener to a
service or stand-by mode.
The controller shall allow for a manual initiation of the automatic regeneration sequence by utilizing a manual
regeneration knob on the timer.
4.4.1 System control options
¨ (Time Clock, Single Unit)
A time-initiated regeneration for single units shall be available. The clock timer will be capable of regenerating
the softener at any time of day or night and on any or every day of the week. The timer will activate a motor
drive that will perform the regeneration functions on the exhausted tank and return it to service.
¨ (Meter Initiated Delayed, Single Unit)
A volumetric meter, mechanically coupled to the timer control, shall set the timer for regeneration at a preset
time of day or night after the preset volume of water has passed through the water softener. The timer will
activate a motor drive that will perform the regeneration functions on the exhausted tank and return it to the
service position.
¨ (Time Clock, Parallel Twin Unit)
A time-initiated regeneration for parallel twin units shall be available. Each clock timer will be capable of
regenerating the softener at any time of day or night and on any or every day of the week. The timer will
activate a motor drive that will perform the regeneration functions on the exhausted tank and return it to service.
Simultaneous regenerations shall not be possible.
¨ (Meter Initiated, Parallel Twin Unit)
Each unit shall include a volumetric meter, mechanically coupled to the timer control. Upon exhaustion of either
tank, its control shall activate a motor drive that will immediately, or at a preset time of day or night, perform the
regeneration functions on the exhausted tank and return it to the service position. The controls shall include an
electrical interlock to prevent simultaneous regeneration of both softeners in the event the second tank
exhausts while the first tank is in regeneration.
¨ (Meter Initiated, Alternating Twin Unit)
A single, remote mounted volumetric meter shall signal the softeners to regenerate on an alternating basis after
the preset volume of water has passed through the water softener. One unit remains in a fully regenerated
stand-by condition while the other unit is in service. Upon exhaustion of the service unit, the stand-by unit shall
immediately be placed into service and the exhausted unit shall be removed from service and the regeneration
initiated. The timer will activate a motor drive that will perform the regeneration functions on the exhausted tank
and return it to the stand-by position. No external alternating devices will be acceptable. The alternating function
must be contained in the sequencing controller and each controller must communicate via a single pre-wired
cable assembly, simultaneous regenerations shall not be possible.
¨ (Meter Initiated systems ONLY)
4.4.2 Flow Meter(s)
¨ (Meter Initiated single and parallel systems ONLY)
A flow meter package shall be provided consisting of a mechanical turbine-type meter; the package shall
include a total of _____ meter assemblies.
The meter provided shall be 2.0 inches, compatible with the specified piping. It will be designed to allow ease of
removal of the turbine for inspection without modification of the piping system. A cable shall be provided for
direct connection to the operating valve.
The meter package provided shall be functional within the flow range of 3 to 130 gpm and will be provided with
a threaded tee meter fitting.
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