Page 4
When set up as a softener, the backwash and rinse cycles automatically increase with increasing salt dosage.
Backwashes can be set to be NORMAL or LONGER. The option selected will apply to all backwashes. Tables 2
and 3 (below) show the length of the cycles when the valve is set up as a softener.
Table 2
Backwash NORMAL Length Softener
Cycle Times in Minutes
* These are reference numbers that approximate the amount of salt needed. The actual capacity in grains per pound of salt is used in calculations.
** Total Time does not include Fill Time, which is dependent upon the amount of salt needed. When in the Fill Mode the system is providing treated water.
Table 3
Backwash LONGER Length Softener
Cycle Times in Minutes
* These are reference numbers that approximate the amount of salt needed. The actual capacity in grains per pound of salt is used in calculations.
** Total Time does not include Fill Time, which is dependent upon the amount of salt needed. When in the Fill mode the system is providing treated water.
Table 4 (page 5) shows the order of the cycles when the valve is set up as a filter. When the control valve is used as
a downflow regenerating filter (i.e. both backwash and regeneration), it allows the option to specify one backwash or
two backwashes. Regenerating filters also have the option of having the regenerant refill after the rinse cycle or
prefill before regeneration. If the regenerant prefills before regeneration, the prefill starts two hours before the
regeneration time set. During the 2-hour period in which the regenerant is being made, treated water is still available.
For example: If a downflow filter regeneration time is set for 2:00 a.m. with the prefill option selected, then the fill
cycle occurs at 12:00 a.m. and the start of the backwash cycle occurs at 2:00 a.m. There is only one rinse.
Backwashes can be set to NORMAL or LONGER. The option selected will apply to all backwashes. Tables 5 and 6
(page 5) show the length of the cycles when the valve is set up as a filter.
When the control valve is used as a non-regenerating filter (backwash only), it has the option to specify one
backwash or two backwashes. If two backwashes are specified, two rinses occur. Tables 5 and 6 (page 5) show the
length of the cycles when the valve is set up as a filter. When used as a non-regenerating filter, the downflow piston
must be installed, the regenerant piston removed, injector plugs must be installed in both the DN and UP injector
locations, and the refill elbow must be replaced with a refill port plug.
WS1 & WS1.25 Downflow Softener
WS1 & WS1.25 Upflow Softener
Grains Capacity / Lb. NaCl
6000 to 3501
3500 to 2501
2500 to 1700
6000 to 3501
3500 to 2501
2500 to 1700
Lbs. NaCl / Cu.Ft. Resin *
Less than 7.5
7.5 to 12
More than 12
Less than 7.5
7.5 to 12
More than 12
Cycle
Time
in Minutes
Backwash Normal
6
8
8
—
—
—
Regenerate
45
60
75
45
60
75
Backwash Normal
3
8
10
6
10
12
Rinse
3
4
6
3
4
6
Total **
57
80
99
54
74
93
WS1 & WS1.25 Downflow Softener
WS1 & WS1.25 Upflow Softener
Grains Capacity / Lb. NaCl
6000 to 3501
3500 to 2501
2500 to 1700
6000 to 3501
3500 to 2501
2500 to 1700
Lbs. NaCl / Cu.Ft. Resin *
Less than 7.5
7.5 to 12
More than 12
Less than 7.5
7.5 to 12
More than 12
Cycle
Time
in Minutes
Backwash Normal
8
10
12
—
—
—
Regenerate
45
60
75
60
70
80
Backwash Normal
8
10
12
12
14
16
Rinse
4
6
8
5
7
9
Total **
65
86
107
77
91
105
