Models 7180 and 7380
Owner’s Manual
and Installation Guide
5/22/2019
23
Salt Settings—5B or ST Controller
Mode 1 (Timer Mode) and Mode 2 (Demand Delayed Mode) Setting
Chart
This section provides guidance for using different service settings to achieve the desired capacity. Depending on your
water hardness, other settings as detailed below may be preferable. In most cases, when hardness is 35 grains per gallon
(600 mg/L), setting #2 is the most efficient.
5B or ST Controller
Model 7180
Model 7380
#1 Salt Setting
Backwash 1 (minutes)
1
1
Brine/Rinse (minutes)
8
22
Backwash 2 (minutes)
3
3
Capacity (grains/grams)
4,500/292
5,510/785
Salt (lb/kg)
1.0/0.5
1.0/0.5
Total length of regeneration (minutes)
12
24
Water Used per regeneration (gallons/liters)
14.5/54.8
20/75.7
#2 Salt Setting
Backwash 1 (minutes)
1
1
Brine/Rinse (minutes)
16
25
Backwash 2 (minutes)
3
3
Capacity (grains/grams)
10,400/685
10,380/673
Salt (lb/kg)
2.5/1.1
2/0.9
Total length of regeneration (minutes)
20
29
Water Used per regeneration (gallons/liters)
14/53
22.1/83.7
#3 Salt Setting
1
Backwash 1 (minutes)
1
1
Brine/Rinse (minutes)
32
28
Backwash 2 (minutes)
3
3
Capacity (grains/grams)
19,100/1,238
19,360/1,255
Salt (lb/kg)
6.5/2.9
4/1.8
Total length of regeneration (minutes)
36
32
Water Used per regeneration (gallons/liters)
22.4/84.8
23.6/89.3
#4 Salt Setting
1
Backwash 1 (minutes)
1
1
Brine/Rinse (minutes)
54
29
Backwash 2 (minutes)
3
3
Capacity (grains/grams)
22,700/1,471
23,310/1,510
Salt (lb/kg)
12/5.4
5/2.3
Total length of regeneration (minutes)
58
33
Water Used per regeneration (gallons/liters)
29/109.8
24.1/91.2
1
If iron is present in the water supply, use salt setting #3 or #4.
