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Preparing pool/spa water, Maintenance menu, General water chemistry – Goldline LOGIC PL-P-4 User Manual

Page 32: Water chemistry, Saturation index, Si = ph + ti + ci + ai - 12.1

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4. Electrical Wiring (page 10)

Main service

Grounding and bonding

Circuit breakers

Pro Logic control power

High Voltage pool equipment

Low voltage wiring (temperature sensors, flow

switch, etc.)

2

29

ºC ºF Ti

Calcuim

Hardness

Ci

Total

Alkalinity

Ai

53

60

66

76

84

94

103

12

16

19

24

29

34

39

.3

.4

.5

.6

.7

.8

.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.

Si = pH + Ti + Ci + Ai - 12.1

-.2

0

.2

CORROSIVE

SCALING

75

75

100

100

125

125

150

150

200

200

250

250

300

300

400

400

600

600

800

800

1.5

1.9

1.6

2.0

1.7

2.1

1.8

2.2

1.9

2.3

2.0

2.4

2.1

2.5

2.2

2.6

2.4

2.8

2.5

2.9

OK

Time Format

12 hour AM/PM

Units

ºF and PPM

Move to previous/next configuration menu

Move to previous/next configuration menu

Toggle between 12 hour AM/PM (default) and 24 hour time format options

Toggle between ºF and PPM (default) and ºC and g/L (Metric) options

Reset Config. to

Default Press +

Are you sure?

+ to proceed

Config. reset

Confirmed

Initiate reset of all configuration parameters

Reset all configuration parameters

Move to previous/next configuration menu (config. not reset)

Move to previous/next menu (config. not reset)

Move to previous/next configuration menu

Use this function to erase all previous system configuration and reset all configuration parameters back to
the factory default values. This function is NOT reversible--be careful.

Maintenance Menu

(only displays if Sensing System is enabled)

The Maintenance Menu will be displayed only if the optional AQL-CHEM is used and the Sensing System is enabled

in the Chemistry Config. Wizard. This menu is used to perform functions relating to the AQL-CHEM ORP and pH

sensing kit.

pH Calibration

Wizard, + to enter

Push to access pH Calibration Wizard

Move to previous/next menu item

Use this Wizard to calibrate the AQL-CHEM’s pH probe. This requires a manual pH test of the pool water
using a dependable red phenol test kit.

Clean Probe Wizard

+ to enter

Push to access Clean Probe Wizard

Move to previous/next menu item

Use this Wizard to clean the AQL-CHEM’s ORP and pH probes. The probes must be clean and free from oil,
chemical deposits and contamination to function properly. Slow response, increased need to calibrate,
and inconsistent readings are indications that the probes need to be cleaned.

5. Pro Logic control configuration (page 20)

6. System Startup and checkout (page30)

1. Preparing Pool/Spa Water

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 20).

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 “bal-

ance”. 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.