Section 4. Startup And Shutdown; Water Chemistry; Startup; Shutdown - Jandy TruDose Installation And Operation Manual

Page 16
ENGLISH

Section 4. Startup and Shutdown

4.1

Water Chemistry

Start with Balanced Pool and Spa Water.
1. Use a pool chemistry test kit with fresh testing
reagents to measure the pH, alkalinity, and calcium
hardness of the pool water. Every pool is unique,
and a pool service professional can help you
determine the optimum chemistry for your pool.
The values below are the recommend pool water
chemistry values according to ANSI/APSP/ICC-11
Standard for Water Quality in Public Pools and Spas.
Free chlorine level: POOL - Minimum 1 ppm, maximum
4 ppm. SPA - Minimum 2 ppm, maximum 5 ppm.
pH: 7.2 - 7.8
Total Alkalinity: 60 - 180 ppm
Calcium Hardness: POOL 150 - 1,000 ppm, SPA 100 -
800 ppm.
Total Dissolved Solids (TDS): Maximum 1500 ppm (not
including sodium chloride)
Langelier Saturation Index (LSI): -0.3 to +0.5
IMPORTANT: EPA-registered pool and/or spa
sanitizers shall be used in accordance with the product
manufacturer's EPA-accepted label for use and/or
operation requirements.
4.2

Startup

1. Plug the controller into the power outlet. For
outdoor installations, ensure the use of a watertight
outlet cover.
2. Turn on the filter pump and verify the water flow
through the flow cell by opening the sample port
valve (center) and observing a steady stream of
water. The right side valve may need to be partially
closed to produce a steady stream.
NOTE:
Water should pass over the pH and ORP
sensors for a minimum of 10 minutes to allow
for accurate, stable readings of pH and ORP
levels from the pool.
3. Check for leaks and repair if necessary.
4. Manually adjust and balance the pool water to
acceptable ranges using a test kit.
NOTE: Use a DPD based test kit to check the
chlorine level.
5. Verify that the green Flow LED is illuminated. Both
the pH and ORP dose outputs are disabled if there is
no water flow.
6. Press the Mode pushbutton momentarily to place
the controller into pH setting mode. The green pH
setting LED will illuminate. Select the desired pH
set level and dose time (seconds).
7. While still in pH setting mode, press the pH Cal
pushbutton to calibrate the reading to the value
observed through the manual testing of the water.
Jandy TruDose Chemical Controller
® TM
NOTE:
Always calibrate using water from the sample
port of the flow cell.
8. Press the Mode pushbutton momentarily to place
the controller in ORP setting mode. The yellow
ORP setting LED will illuminate. Select the desired
ORP set level.
NOTE:
If the pH level in the pool is at the desired set
level and the chlorine/bromine level is at the
desired PPM level in the pool, the ORP set
level should be the same as the current ORP
reading when in auto Mode.
4.3

Shutdown

NOTE Each time the Mode pushbutton is momentarily
pressed, the mode will cycle from auto to pH
setting to ORP setting and then return to auto
mode.
1. Press the Mode pushbutton momentarily to place
the controller in pH setting mode. The green pH
setting LED will illuminate and both the pH and
ORP digital displays will show dashes.
2. Press and hold the Mode pushbutton for 2 seconds
until both the pH and ORP displays read OFF.
3. The controller will turn off and the digital displays
and function LEDs will go blank. The green Flow
LED will be illuminated if water is flowing through
the flow cell.
NOTE There is still power to the controller unless the
power supply is unplugged.
4.4

Modes and Adjustments

4.4.1 Auto
This is normal operational mode. The controller
allows full operation and monitoring of both pH and
ORP (sanitizer) levels. No function pushbuttons are
operational in this mode.
• The red function LED next to auto is illuminated.
• Digital display alternates the display between the pH
and ORP readings.
4.4.2 pH Setting
NOTE
While in this mode, the green pH setting LED
will illuminate, both the pH and ORP digital
displays will show dashes and all auto functions
will be disabled. When a function pushbutton
is pressed, the digital display will show the
function.
a. Set Level
1. Default: 7.4 pH
2. Selectable range: 7.0 - 8.0 pH (in 0.1 increments)
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