Appendix C - Aqua-Sensor Guidelines - Culligan 60K Installation, Operation, And Service Instructions With Parts Lists

Top mount (ctm) water softeners models from 2020

Table of Contents

Aqua-Sensor Application Guidelines

Parameter

Hardness (gpg as CaCO3)

Soluble iron (ppm as Fe)

Manganese (ppm as Mn)

Hardness versus Salt Dosage

TDS to Hardness Index

Temperature, °F

Alum and phosphate

Commercial cell: distance between

sensing and reference cell pairs

Hardness vs. Salt Dosage

Hardness (gpg as CaCO3)

7-10

10-15

15-25

25-50

50-75

75-99

Resin Bed Depth and Estimated Capacity per Inch at Various Salt Dosages (Downflow)

Table 22.

Resin Bed Depth and Estimated Capacity per Inch at Various Salt Dosages (Downflow)*

Resin

Depth of

Model

Qty

Resin (in.)

60K

90K

120K

150K

210K

* 300K, 450K and 600K models were not designed to be used with an Aqua-Sensor.

NOTE!

Although the Aqua-Sensor device has been used successfully on water with hardness as low as 3 gpg,

there is an increased risk of missed signal (no regeneration) when the hardness is less than 6 gpg.

NOTE!

For each tank diameter, there is a specific volume of resin in the space between the cell pairs. The

capacity of that resin is influenced by hardness and salt dosage. Any combination of flow rate and

hardness that causes the hardness front to pass through that volume of resin in less than 6 minutes

will result in the sensor failing to detect the need to regenerate. In general, the volume of resin between

the cell pairs on commercial units will permit a proper signal at or below the continuous flow rating

when raw water hardness is less than 50 gpg. At higher hardness levels, it may be necessary to reduce

the flow rate to assure adequate sensor signal duration.

NOTE!

If precipitated or bound iron is present it must be removed before the softener.

NOTE!

Manganese can deposit on the sensor electrodes, particularly on the upper pair, causing missed

signals (no regeneration). Periodic cleaning may be needed to maintain satisfactory performance.

NOTE!

Adequate signal strength has been demonstrated at ratios as high as 14, but signal strength diminishes

with decreasing TDS to hardness index.

NOTE!

Amount shown is based on the distance between the referencing cell pairs. Reserve capacity at salt

dosages less than 15 lbs per cubic foot are shown for reference purposes only and may not provide

adequate representation of actual capacity per inch of bed depth for operational purposes.

Cat. No. 01029401