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Troubleshooting
Before you call, look here. We’re going to ask you these questions anyway, so …
•
Why can’t I put pH down in Container #1 or #2?
Because it will inject on top of the pH sensor making it take longer to dose while the sensor
recovers. Faster is better, right?
•
My pH reading goes INSANE when I try to adjust pH for just a second.
Pump input to the GroBot EVO is on the LEFT. If you are running it backward, you’re dumping
acid directly on your probes which would make anyone crazy. Switch the tubing so the pump
comes in from the LEFT and the return to the res is on the RIGHT.
•
What’s the dosing system doing? What’s going on in there?
Your GroBot EVO waits 30 seconds between pH doses to let the probe readings stabilize and the
solution circulate in your system. It also waits 30 seconds between Nutrient doses
The first time you fire up your ‘Bot, the pumps are dry and will take time to pump all the air out of
the lines. It’s not unusual for the first dosing to take 30-45 minutes to get going. You can get
around that by doing a Manual Injection to prime the pumps if you want, or just be patient. She’ll
work it all out.
The GroBot Evo is designed to be a fully automatic, “set it and forget it” kind of system. Watch
and see what she does while injecting, and you’ll become comfortable with how the machine
reacts to various inputs. Each dosing container lights up when the injection pump is running, so
you can tell what’s going on.