COMPLIANCE INFO_1995-2008 - Laserfiche WebLink

Home Browse Search

usages. A manual recharge lever permits an extra supply of soft water for temporary increases in water usages. How- ever, if you have a Hi -Flo® 2 Electronic Control system, see Cat. No. 01-8820-08 for installation and operation. AQUA -SENSOR® CONTROL SYSTEM Hi -Flo 2 water softeners are available with an Aqua -Sensor® control system that allows regeneration at a predetermined time of day. This system consists of two basic components: the sensor (Fig. 3), which is suspended in the lower portion of the softener resin bed, and a solid-state amplifier (Fig. 4), located in the timer. The sensor has two cells, a sensing cell and a reference cell. Each cell measures the electrical resistance of the resin around it. The two -cell design eliminates side effects due to varia- tions in temperature and total dissolved minerals in the water. The system always remains "balanced" and never needs field adjustments. As water passes through the resin bed, the resin becomes exhausted. Exhausted resin has a greater electrical resistance than the conditioned resin. This "unbalances" the system. The solid-state amplifier detects this tiny electrical imbalance and transmits an amplified signal to the timer. The unit or units will regenerate in the future as determined by the dmeclock setting. NOTICE: This standard "delay -style" op- eration can be converted to "demand -style" operation by an optional Demand Aqua -Sensor® Kit, PN 01-0031-27. 5 -CYCLE CONTROLVALVE The reliable Culligan, Power Valve (Fig. 5) directs flow of water during recharge. Constructed of durable, corrosion - resistant materials, the piston -operated design assures posi- tive, accurate positioning even on turbid problem water sup- plies. SERVICE The service cycle is a downflow operation. Hard water flows down through the resin and is softened by exchanging hard- ness ions such as calcium and magnesium for "soft" (so- dium) ions. This softener must then be regenerated. On PV -A units, the service flow goes through the control FIG. 4 valve. On PV -B units, the service flow also goes through two normally open diaphragm valves, or Flo -Pak, (Fig. 5), which allow a higher flow without an increase in pressure drop. During regeneration, the Flo -Pak is closed, and hard water is bypassed through the control valve. REGENERATION The first step of regeneration is the BACKWASH CYCLE. Water flows from the bottom to the top of the tank and then out to drain washing out turbidity or iron and reclassifying the resin bed. An automatic flow control in the drain line limits the flow of backwash water to avoid possible loss of resin. The second step is the BRINE CYCLE. The control valve directs water through the eductor mixing it with concentrated brine from the brine tank and discharges into the top of the softener tank. Brine flows from the top of the tank through the resin bed and out to drain, replacing and carrying out the hardness elements. This restores the softening capacity. The third step is the RINSE CYCLE. When all brine has been drawn from the brine tank, an eliminator built into the brine safety valve, prevents air from being drawn into the softener tank. Fresh water continues to flow through the eductor into the softener tank in a downflow direction, slowly displacing the brine and rinsing it out to drain. NOTICE: The first three cycles last a total of 75 minutes. The fourth step is the FAST -RINSE CYCLE. The softener receives a fast rinse (downflow) to insure a salt -free pre -con- ditioned resin bed before returning the softener to service. During the FAST -RINSE cycle, the control valve also allows a measured amount of water to enter the brine tank. Should the refill fail to shut off, a float -operated safety valve in the brine tank acts as a secondary shut-off and operates to prevent the brine tank from overflowing. The water softener may be used in conjunction with other water conditioning equipment when needed to solve other water problems to produce clear, filtered, soft water through- out the application. FIG. 5 COMPONENT DESCRIPTION / 5