GHL Maxi doser 2.2 stalling - unusable

Hello all

After the issue to connect to the WiFi, once done I connected all my tube and went for the calibration. This is when I experienced the repeating stalling of the pump, either the first or second one at any speed.

I thought it would be due to the pump being new and not totally primed. I ran it a few time and still happening with the horrible sound it make.

I took some videos of the issues
https://youtu.be/IoQa2OmmUDA


The doser is useless like this and it already have the last firmware, what should I do?

Petitreef

Stalling at high speed and stop completly
https://youtu.be/Tw907UugUyQ

I thought my circuit was too restrictive, so I did a close loop and even with just air, it stall
https://youtu.be/2WqAGMoP_ug

Hello,

I'm sorry you are having this issue with your new Doser.

What is the firmware version of the Doser?
The firmware must be 1.44

Gaël

I got version 1.43, going to upgrade and try again with the 1.44

Where can I find th3 firmware 1.44?
I don’t have a PC, so need by the web

you can find it in the installation path of the GHL ControlCenter like
C:\Program Files (x86)\GHLControlCenter_V1140\Firmware\PAB-Devices
regards Pit

Hello,

Unfortunately, at the moment internal and PAB firmwares update can only be done with the GHL Control Center software on Windows.
Try to borrow a laptop from someone to do this update, otherwise please open a support ticket and ask GHL to perform this update but this will require the doser to be returned to GHL.

Gaël

I have exactly the same issue on firmware 1.44
If operating manually too it sticks but when you release the button the pump then spins free.

I opened a ticket on 6th Dec but not had a reply from support yet.

Quote:

---

Originally Posted by Patrick_UK

I have exactly the same issue on firmware 1.44
If operating manually too it sticks but when you release the button the pump then spins free.

I opened a ticket on 6th Dec but not had a reply from support yet.

---

Hello Patrick,

This is not normal, I'll take care of escalating your ticket.
Unfortunately this one seems to have been forgotten.
Our apologies.

Quote:

---

Originally Posted by Gael

Hello Patrick,

This is not normal, I'll take care of escalating your ticket.
Unfortunately this one seems to have been forgotten.
Our apologies.

---

Thanks :)

this ticket was assigned to me and I am more than behind with my current tasks due tooo much workload at the moment

I will reply in the ticket in the next minutes, let us go from there

thanks

@patrick, please let me know in this post the feedback from the ticket.

should I open a ticket also? i feel it would be more useful in this thread if multiple people have the same issue with the new maxi doser 2.2

Hello Petitreef,

I had exactly the same problem with my new ghl doser maxi 2.2! The update to version 1.44 did not bring any improvement either. But i would still run update 1.44.

And here's my solution:

clean the pump, hoses and rollers completely from this grease with kitchen paper! It is best to clean it with a little alcohol at the end. Then spray all parts with a silicone spray. I used one for the food industry. Do not use Vaseline!

Since then I've had no problems with my doser maxi 2.2

Nature_Aquaristic_RT

Hi,

in most cases firmware 1.44, which gave more torque to the motors, fixed the problem.
I had a few cases where a further increase of torque was necessary, these people got 1.45 from me.
There is still one case I am aware of who needs obviously even a bit more power, I am working with him now.

As soon as I have a final and clear picture I will announce it.

About

Quote:

---

I had exactly the same problem with my new ghl doser maxi 2.2! The update to version 1.44 did not bring any improvement either. But i would still run update 1.44.

And here's my solution:

clean the pump, hoses and rollers completely from this grease with kitchen paper! It is best to clean it with a little alcohol at the end. Then spray all parts with a silicone spray. I used one for the food industry. Do not use Vaseline!

Since then I've had no problems with my doser maxi 2.2

---

This is very interesting. We don't use Vaseline, we use a (very expensive) food grade Silicone based temperature resistant lubricant with higher viscosity so the lubricant wont become too liquid and could drip out of the pump head.
We might investigate if there is a better lubricant for this application.

Matthias

Hallo Matthias
Vielen Dank für deine Antwort.

Das mit der Vaseline habe ich von der GHL Download Website aus der Bedienungsanleitung vom älteren Doser Maxi. Sollte noch aktualisiert werden.

Das Silicon, welches ihr verwendet hat eine sehr ähnliche Konsistenz wie Vaseline. Sieht auch sehr ähnlich aus.

Ich werde noch ein Video von meinem Doser Maxi hochladen. Läuft auf der schnellsten Stufe einwandfrei!

Ich kann dir gerne das Produkt, welches ich verwendet habe, mitteilen. Damit läuft die Pumpe hervorragend!

Gruss
Nature_Aquaristic_RT / Remo

Hallo

Hier noch das Video von meinem GHL Doser Maxi 2.2. Dieser läuft auf der schnellsten Stufe ohne ruckeln oder blockieren.

https://drive.google.com/file/d/10ru...w?usp=drivesdk

Alles nachdem ich das Fett von den Pumpen entfernt habe. Auch die Rollen, und Schläuche gut gereinigt. Am Schluss noch mit etwas Alkohol. Danach mit Siliconspray für die Lebensmittel Industrie eingesprayt.

Läuft nun super!

Gruss

Nature_Aquaristic_RT / Remo

To give an update on my side, i was able to get a PC and updated the firmware to 1.44 and I confirm that it did indeed resolved the issue. without needing to use vaseline.

looking forward to the 1.45, as a little bit more torque could be resolve some of the micro stall i can hear sometimes.

Correction: Vaseline should not be used!

Vaseline is not suitable for the dosing pumps

I used a silicone spray from the food industry! Not petroleum jelly, not Vaseline!

Thank you very much.

Greetings

Nature_Aquaristic_RT / Remo


Zur Berichtigung, es sollte keine Vaseline verwendet werden!

Vaseline ist nicht geeignet für die Dosierpumpen.

Ich habe einen Silikonspray der Lebensmittel Industrie verwendet! Nicht Vaseline!

Besten Dank.

Gruss

Nature_Aquaristic_RT / Remo

Maybe Eheim aquarium maintenance spray can also been used since it is silicon-based.

Danke für all das Feedback!
Prima, dass jetzt alles läuft!

I am having this issue as well. I've started a ticket. I'll also add that one of my maxi 2.1 SA shows the exact behavior during a water change interval so I've disconnected it. It however is not on the new firmware. Should I run the update on it?

Update on mine sticking. I cleaned out and used a silicone lubricant I had and it worked better but still had instances where it would get stuck. Matthias provided me with 1.45 which increased the torque which helped but I still had a few occasions where it still would stick. So I purchased a different brand of lubricant and applied that after fully removing the other one and so far it is working well.

One thing to also check is that the rollers are freely rolling and no foreign objects within the roller area.

Matthias, Vielen Dank für Ihre Hilfe