24
Basic Water Chemistry:
The DIG-220 is designed to produce chlorine on a daily bas
is.
To monitor the system’s efficiency, the water chemistry ranges, and schedule of periodic checks—per below—
should
be followed.
Excessively high chlorine levels can cause premature cell failure and corro-
sion damage to pool fixtures and equipment.
Failure to heed the following may result in equipment damage.
NOTICE
Always follow the instructions on the manufacturer's label whenever handling
or using chemicals.
Failure to heed the following may result in equipment damage.
NOTICE
Do not use a hydrogen peroxide based chlorine neutralizer or permanent dam-
age to the cell will occur.
Failure to heed the following may result in equipment damage.
NOTICE
Salt Addition Chart:
The following salt chart is included for reference only; once programmed to the correct water volume, the controller will aut
o
matically indicate how much salt is required to
achieve
optimum water salinity.
To use this chart:
1.
Find current salt
level (ppm or g/l) in
the left column. (This
can be obtained from
DIG-220 display or
by testing water.)
2.
Find pool/spa volume
in the second row
(Gallons or Liters).
3.
Find the amount of
salt needed to bring
pool to the ideal
level by finding the
intersection of the
row and column.
REFERENCE SECTION
For volumes other than what
is shown, use combinations
of various columns.
1,000
2,000
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
(4,000)
(8,000)
(18,000)
(38,000)
(56,000)
(76,000)
(94,000)
(114,000)
(132,000)
(152,000)
25
50
125
250
376
501
626
751
876
1,002
(11)
(23)
(57)
(114)
(170)
(227)
(284)
(341)
(398)
(454)
23
46
115
230
344
459
574
689
803
918
(10)
(21)
(52)
(104)
(156)
(208)
(260)
(312)
(364)
(416)
21
42
104
209
313
417
522
626
730
835
(9)
(19)
(47)
(95)
(142)
(189)
(237)
(284)
(331)
(379)
19
38
94
188
282
376
470
563
657
751
(9)
(17)
(43)
(85)
(128)
(170)
(213)
(256)
(298)
(341)
17
33
83
167
250
334
417
501
584
668
(8)
(15)
(38)
(76)
(114)
(151)
(189)
(227)
(265)
(303)
15
29
73
146
219
292
365
438
511
584
(7)
(13)
(33)
(66)
(99)
(133)
(166)
(199)
(232)
(265)
13
25
63
125
188
250
313
376
438
501
(6)
(11)
(28)
(57)
(85)
(114)
(142)
(170)
(199)
(227)
10
21
52
104
157
209
261
313
365
417
(5)
(9)
(24)
(47)
(71)
(95)
(118)
(142)
(166)
(189)
8
17
42
83
125
167
209
250
292
334
(4)
(8)
(19)
(38)
(57)
(76)
(95)
(114)
(133)
(151)
6
13
31
63
94
125
157
188
219
250
(3)
(6)
(14)
(28)
(43)
(57)
(71)
(85)
(99)
(114)
4
8
21
42
63
83
104
125
146
167
(2)
(4)
(9)
(19)
(28)
(38)
(47)
(57)
(66)
(76)
3,000
3,500
Greater
than 3,500
2,500
(2.5)
OK for DIG-220 Operation - (This is typically the maximum salt level desired by most pool owners/operators since most people can taste salt levels above
OK for DIG-220 Operation but greater than 6000 ppm can cause corrosion to metallic objects
.
4500 ppm for maximum chlorine production.
(If lower salt level is desired, partially drain and refill with fresh water.)
1,500
(1.5)
1,750
(1.75)
2,000
(2.0)
2,250
(2.25)
Pool/Spa Volume in Gallons or
Liters
Pounds (kilograms) of Salt needed to attain 3000 ppm (3.0 g/l)
250
(0.25)
0
Current salt
level ppm
(0.0g/l)
500
(0.50)
750
(0.75)
1,000
(1.0)
1,250
(1.25)
