Appendix B - Aqua-Sensor; Application Guidelines - Culligan Gold Series Installation & Operation Instructions

Aqua-Sensor

Application Guidelines

®
Parameter
Hardness (gpg as CaCO )
3
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
Residential cell: distance between sensing and reference cell
pairs
Hardness vs. Salt Dosage
Avoid using maximum salt dosages. The sensor doesn't require high salt dosages to operate effectively. Below ia a table with
suggested salt dosages at various hardness ranges. Maximum dosages defeat the purpose salt efficiency feature of the Aqua-
Sensor sensing device, prolong rinse times and daily regeneration may occur. It is also important the correct eductor nozzle is
®
used to ensure proper salt dosages.
Hardness (gpg as CaCO
Notes:
1 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 less than 6 gpg.
2 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.
3 If precipitated or bound iron is present it must be removed before the softener.
4 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.
5 Adequate signal strength has been demonstrated at ratios as high 14 but signal strength diminishes with decreasing TDS to
hardness index.
)
3
7-10
10-15
15-25
25-50
50-75
75-99
Value
4 - 99 (See Notes 1 & 2)
< 2 (See Note 3)
< 0.5 (See Note 4)
See Table 1 and Note 2
TDS hardness (as CaCO ) <10 (i.e., hardness must be at
3
least 10% of TDS; see Note 5)
Any within equipment's operating range
Anecdotal evidence indicates potential foulant; effect has not
been confirmed experimentally
6 inches (See Note 2)
3 inches (See Note 2)
Recommended Salt Dosage (lbs/ft
Appendix B
)
3
5-6
6-8
8-9
9-11
11-12
12-16
Appendix B 63