Page 17
ENGLISH
Jandy
®
TruDose
TM
Chemical Controller
|
Installation & Operation Manual
b. Dose Timer
1.
Default: Timed dose of 30 seconds pH pump
energized and 5 minutes pH feed pump in delay
(mixing time). In the timed dose cycle mode, the
Dose LED will flash while dosing and illuminate
steadily during the delay portion of the timed cycle.
2.
Selectable range: OFF and Timed (10-900 seconds
ON and 5 minutes OFF).
3.
Make sure to separately check your pool's total
alkalinity (TA) regularly. Adding acid to your pool
water will lower total alkalinity.
4. To avoid overfeeding issues, it is recommended to
start the unit with the default settings (30 seconds).
The dosing time can be increased if the device is
not able to maintain the pH value at the desired
value.
c. Overfeed Timer
The overfeed timer turns off dosing if the pH setpoint
is not reached within a certain amount of time. This is a
safety feature to avoid overdosing or to detect if the acid
tank is empty. The timer settings are:
1. Preset: 60 timed cycles. The overfeed timer does
not automatically reset. It must be reset by turning
the controller off and then on or cycling the mode
out of auto and back to auto.
2. The overfeed timer is interlocked with the dose
timer selection.When the preset cycle limit is
reached, the pH alert LED will flash and "Er1" will
be displayed on the LCD screen. The pH dosing
pump is stopped to avoid overfeeding acid into the
pool.
When the preset cycle limit is reached, the pH alert
LED will flash and "Er1" will be displayed on the
LCD screen. The pH dosing pump is stopped to avoid
overfeeding acid into the pool.
d. High Alert - Default: 8.1 pH
1.
Display: pH alert LED on
e. Low Alert - Default: 6.9 pH
• Display: pH alert LED on
f. pH Cal
•
/- 0.5 pH adjustment from the current
reading.
4.4.3
ORP Setting
NOTE:
While in this mode, the yellow ORP 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.
pH
7.2-7.6
ORP
600-800 mV
Off
EC
pH
7.2-7.6
ORP
600-800 mV
Flashing
100%
Need Chlorine Production
Chlorine Production OFF
(ORP lower than Setpoint)
(ORP higher than Setpoint)
Figure 14. TruDose / APUREM Interfaces
pH
7.2-7.6
ORP
600-800 mV
Off
pH
7.2-7.6
ORP
600-800 mV
Flashing
CHLORINATING
100%
EXTERNAL
CONTROL
Need Chlorine Production
Chlorine Production OFF
(ORP lower than Setpoint)
(ORP higher than Setpoint)
Figure 15. TruDose / TruClear XL Interfaces
a. Set Level
1. Default: 700 mV
2.
Selectable range: 400 mV to 900 mV (in 10 mV
increments).
b. Dosing Strategy
•
Default: the controller will continuously energize the
24VDC relay controlling the saltwater chlorinator
(not provided), via the ORP mode until the setpoint
or the overfeed timer is reached.
