7.2 Frequently asked questions
Question Answer
Why is the ‘
’ or ‘
’ flashing
but the pump is not turning?
The
‘
’ or ‘
’
will flash whenever the pH controller is in a dose cycle. This includes
the ‘OnTime’ and ‘OffTime’. The pump does not turn during the ‘OffTime’.
What are dosing lockouts?
A feature that stops the pH controller from dosing if:
• The temperature probe measures a solution temperature of less than 0 °C /
32 °F or more than 50 °C / 122 °F.
The pH reading does not change after 15 dose cycles.
Ineffective Lockout can only be disabled via the Edenic by Bluelab software.
Do I need to use the
temperature probe with ATC for
pH?
You can omit use of the ATC probe if:
1. You do not use EarthLink On setting to stabilise the pH value
2. Your solution temperature is stable, and you calibrate the pH probe in
calibration solutions at the same temperature as the reservoir / tank
solution.
3. Your pH is close to 7.0 pH
To remove/reduce any “mains earthloop” issues affecting the pH value’s stability.
How do I use Earthlink?
Ensure the ATC probe is installed and in the same solution as the pH probe.
Press ‘
’ to view status of pH mV value behaviour. Change the Earthlink setting in
MENU and watch the pH mV value again.
Select the Earthlink option that gives the least pH mV noise/variation. If neither
option improves pH stability:
1. Calibrate pH probe, see section 5.1.
2. Suspect Mains electrical problems. Obtain Electrician assistance.
How do I determine the best
Dose OnTime/ OffTime values?
Adjust OnTime such that 3 to 5 doses shifts the pH by only 0.1pH.
If <= 2 doses moves pH more than 0.1pH, you risk overdosing. (pH changes past
Required Value).
If it takes >=5 doses you will have a slow response to any changes. You may also get
“HELP” displayed if pH hasn’t moved enough if 15 dose cycles.
If < 3 doses at 1 sec OnTime shifts the pH more than 0.1pH, you will need to dilute
the dosing solution to a lower concentration.
Adjust OffTime such that the last dose is fully mixed before the next dose cycle
starts.
If OffTime is too short, you risk overdosing (pH changes past Required Value).
If OffTime is too long, correction to pH changes will take longer than necessary.
How do I reset the pH controller
to “as Shipped Defaults”?
Hold <CAL> button down and apply power. Release button when “Restored Factory
Defaults” appears on screen.
How do I reset pH calibration to
“Defaults”?
The pH probe can be calibrated anytime to the pH controller. Follow the calibration
steps in section 5.1.
Hold <CAL> button down till “pH Calibration Reset to Default
” is displayed then press
‘’ to reset.
To Next Page
Loading...
Need help?
General
