Pump Control - Link4 iGrow 1800 Installation And User Manual

Pump Control

The iGrow offers two types of pump control. Supply pumps are used for hot or cold water temperature control
systems while peristolic pumps are used for nutrient injection systems.
Choose the type of pump you are controlling, Supply or Peristolic
Supply Pump
When you have a mixvalve type heating system, it is often necessary for the controller to manage the system
pump(s). The iGrow 1800™ can control up to 5 Pumps, each one being activated when the mixvalve tied to it
opens beyond the Minimum threshold.
mixvalve's settings, which pump you want it to control. For more details on this see the Programming / Mix
Valve section of this manual.
In the example screen above, the pump will turn on when the mixvalve that it's tied to opens at or above 5%.
Peristolic Pump
When you have a nutrient enjection system, it is often necessary for the controller to manage the system
pump(s). The iGrow 1800™ can control up to 5 Pumps, each one being activated when the corresponding
sensor passes the threshold you define below.
Probe
Depending on what type of probe you have connected and configured (pH or EC), you can select which one the
pump will be controlled by.
iGrow 1800 Installation Guide
05 Pump2
Select Pump Type:
Supply
To "tie" a pump to a specific mixvalve you must specify, in the
05 Pump2
Pump 2
Supply Mixv's with
minimum 5% open
05 Pump2
Probe: 500uS ECT1
ON to: Decrease
Page83
Pump
Pump
Pump
uS
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