General Water Chemistry - Hayward Pro Logic Operation Manual

Set Day and Time Set Day and Time Adjust the current day of the week
Wednesday 10:37P 10:37P
Move to hours setting
Adjust the current hour (including AM/PM if applicable)
Set Day and Time
Wednesday 37
Move to minutes setting
Set Day and Time Adjust the current minute
Wednesday 10: P
Move to previous/next menu item
Use this function to set the current day of the week and time. These values are used for all the
automatic timeclock functions of the Pro Logic and are also displayed as part of the default menu.
The Pro Logic is designed to keep the clock running during power outages lasting less than 7 days. If
power has been off for longer than 7 days, then the time may have to be reset.
Display Light Toggle between Always On and On for 60 sec.
On for 60 sec
Move to previous/next menu item
This function controls the backlight on the display. If the "60 seconds" option is selected, then the
backlight will automatically turn off 60 seconds after the last key is pressed and will stay off until next
time a key is pressed.
Note that the Display Light selection only applies to the display keypad that you are currently using.
Other display/keypads will not be affected. In other words, you need to individually set this option
for each display/keypad in the system.
Toggle between Enabled (default) and Disabled Beeper
Beeper
Enabled
Move to next menu item
When "Enabled", the keypad will beep every time a key is pressed. If this audible indication is not
desired, select "Disabled".
This function only applies to the display/keypad that you are currently using. You need to set this
option for each display/keypad in your system.
NOTE: This function is not supported on all display/keypads. If the "Enabled" selection is not
blinking, then the current software revision of that particular keypad/display does not support the
option and it will default to Beeper Enabled.
9
Chlorinator Operation / Water Chemistry

General Water Chemistry

Salt is required only if you are using the chlorinator features on the Pro Logic Control. If you are NOT using the
chlorinator, it is recommended that you follow all of the other chemistry recommendations besides salt. Refer to the
description of the Pro Logic configuration menu for information on enabling/disabling the chlorinator (see page 13).
Water Chemistry
The table below summarizes the levels that are recommended by the Association of Pool and Spa Professionals
(APSP). The only special requirements for the Pro Logic are the salt level and stabilizer.
Saturation index
The saturation index (Si) relates to the calcium and alkalinity in the water and is an indicator of the pool water
"balance". Your water is properly balanced if the Si is 0 ±0.2. If the Si is below -0.2, the water is corrosive and
plaster pool walls will be dissolved into the water. If the Si is above +0.2, scaling and staining will occur. Use the
chart below to determine the saturation index.
Si = pH + Ti + Ci + Ai - 12.1
Calcuim
ºC ºF Ti
Hardness
12 53 .3 75
100
16 60 .4
125
150
19 66 .5
200
24 76 .6
250
300
29 .7
84
400
34 94 .8
600
800
39 103 .9
How to use: Measure pool pH, temperature, calcium hardness,
and total alkalinity. Use the chart above to determine Ti, Ci,and
Ai from your measurements. Insert values of pH, Ti, Ci and Ai
into the above equation. If Si equals .2 or more, scaling and
staining may occur. If Si equals -.2 or less corrosion or irritation
may occur.
-.2
CORROSIVE
Total
Ci Ai
Alkalinity
1.5 1.9
75
1.6 100 2.0
1.7 125 2.1
1.8 150 2.2
1.9 200 2.3
2.0 250 2.4
2.1 300 2.5
2.2 400 2.6
2.4 600 2.8
2.5 800 2.9
0 .2
SCALING
OK
26