1°C, or 0.1 pH in the desired direction. This is called the ineffective control lockout, and is
enabled by default, but can be disabled via Edenic.
The Bluelab Pro Controller will indicate it is in ineffective control lockout by flashing the
display and displaying a code in the affected measurement type - for example “PH IC” to
indicate that pH is in ineffective control.
IMPORTANT
The ineffective control lockout is useful to stop dosing pump operation if stock
solution tanks have emptied, or a hose has fallen out of a reservoir, for example.
However for a batch dosing system where fresh water is being added to the
reservoir at the same time as dosing is occurring, it may be better to disable this
feature.
Low EC Lockout
The Bluelab Pro Controller will stop dosing nutrient solution if the measured conductivity
drops below 0.2EC (2CF, 100TDS, 140ppm). This is called the Low EC Lockout, and is
enabled by default, but can be disabled via Edenic.
The Bluelab Pro Controller will indicate it is in low EC lockout by flashing the conductivity
display, and displaying “EC 0.2LO.” As soon as the measured conductivity rises above 0.2,
the Pro Controller will resume dosing again after a 60 second countdown.
IMPORTANT
The Low EC Lockout is useful to stop dosing if the conductivity probe is taken out
of the reservoir, or if the solution level falls below the probe level.
However, when dosing into fresh, RO or deionised water is required this
lockout may need to be disabled.
External Lockout
Dosing can be stopped by external flow switches, float switches, or other sensors
connected to the Bluelab Pro Controller via the Alarm and External Lockout cable. This
is called an external lockout.
When the Pro Controller is in external lockout, the external lockout LED will light, and the
displays will flash “EL” and either “nc” or “no” or “ncno” depending on which switch has
been activated.
As soon as the switch position returns to normal, the Bluelab Pro Controller will resume
controlling after a 60 second countdown.
IMPORTANT
The External Lockout feature can be used to stop dosing when a tank level gets too
low, a pump stops, or solution feeding out is taking place.
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