Replacement of high flow NEXT / 2 / LT sensors with excessive operating noise

Stephan

Administrator

Tuesday, January 19th 2021, 5:56pm

1

Today in an intensive quality control we found a problem in the production at a small number of high flow NEXT / 2 / LT sensors. When the magnets were pressed into the turbine, an incorrect pressing tool was used on some turbines. This leads to incorrect centering of the shaft and can cause noise due to tumbling of the rotor.

If you notice disturbing noises from your sensor at a flow rate of less than 200l/h (0.9 gal/min), please contact our Support.

Write an e-mail with the subject line "Replacement high flow sensor" to info@aqua-computer.de and include the following data:

Complete postal address incl. phone number
Invoice copy of the sensor
Serial number* in case of a high flow NEXT sensor

(*The serial number can be found within the aquasuite software in the system tab of the sensor)

We will replace the affected sensors afterwards.

The error affects only a few of the sensors produced from November. Noises at higher flow rates are normal and no reason for replacement. Also, an audible noise is basically normal in close proximity to the sensor.

The noise of the high flow NEXT / 2 / LT series is quieter than the known high flow sensors. Should the noise be higher in your case, please also arrange for a replacement.

We want to ensure total customer satisfaction with this product and apologize to affected customers for the inconvenience.

Due to a generally high workload and a high volume of requests to our support, processing will take longer than normal. Also the exchange will not be possible immediately. Therefore, the exchange may take a few weeks. The old sensor has to be returned only after receiving the new one. More information on how to return the sensor will be sent to you by email. The shipping costs will be covered by us. We allow 3 months time to return the faulty sensor.

ATTENTION: The offer to exchange affected sensors in advance ends on April 15th 2021. After this date, a regular complaint is required, which usually involves a direct return to your dealer or us.

InfoSeeker

Senior Member

Tuesday, January 19th 2021, 7:50pm

2

Is there a way to determine (physical inspection) if there is an issue with a flow next that has not been installed yet?

Hopper64

Full Member

Wednesday, January 20th 2021, 3:33am

3

Is there a specific series of serial numbers that we need to look for?

Asus Maximus Z790 Apex, Intel 13900KS, Asus 4090 Strix, Phanteks Enthoo Elite, GSkill F5-8000J3848H16GX2-TZRK, Asus ROG XG349C, EKWB Quantum Kinetic TBE 300 D5 and VTX 160, Corsair AX1600i, Asus Claymore 2, Asus ROG Gladius III, Samsung 990

Stephan

Administrator

Wednesday, January 20th 2021, 9:50am

4

Quoted from "InfoSeeker"

Is there a way to determine (physical inspection) if there is an issue with a flow next that has not been installed yet?

You need to disassemble the sensor and check the bearing pin on top of the turbine. If it is crushed your sensor is affected.

InfoSeeker

Senior Member

Wednesday, January 20th 2021, 1:57pm

5

Quoted from "Stephan"

You need to disassemble the sensor and check the bearing pin on top of the turbine. If it is crushed your sensor is affected.

That looks like Torx screws... 1.5mm? I need to buy.
Any hints in disassembly/reassembly that will decrease the chance of failure?

Stephan

Administrator

Wednesday, January 20th 2021, 2:43pm

6

We can send you a video - please send us a mail.

InfoSeeker

Senior Member

Wednesday, January 20th 2021, 10:56pm

7

What size are the Torx screws, T3, T4, T5?

EDIT 2021.01.26: I purchased a Torx set from T3 to T10... the Torx screws on the High Flow NEXT fit T7 in my set.

This post has been edited 1 times, last edit by "InfoSeeker" (Jan 26th 2021, 5:41pm)

Hopper64

Full Member

Thursday, January 21st 2021, 1:53am

8

Is there a particular serial number that is affected?

Asus Maximus Z790 Apex, Intel 13900KS, Asus 4090 Strix, Phanteks Enthoo Elite, GSkill F5-8000J3848H16GX2-TZRK, Asus ROG XG349C, EKWB Quantum Kinetic TBE 300 D5 and VTX 160, Corsair AX1600i, Asus Claymore 2, Asus ROG Gladius III, Samsung 990

torexko

Junior Member

Tuesday, January 26th 2021, 4:22pm

9

Quoted from "Hopper64"

Is there a particular serial number that is affected?

That is a very good question, I would like to know that as well.

Quoted from "InfoSeeker"

What size are the Torx screws, T3, T4, T5?

The 4 Torx screws on the bottom are T7.

This post has been edited 1 times, last edit by "torexko" (Jan 26th 2021, 5:29pm)

soulskill

Newbie

Wednesday, January 27th 2021, 10:56am

10

Quoted from "torexko"

Quoted from "Hopper64"

Is there a particular serial number that is affected?

That is a very good question, I would like to know that as well.

Quoted from "InfoSeeker"

What size are the Torx screws, T3, T4, T5?

The 4 Torx screws on the bottom are T7.

Yes, this exact question needs to be answered for us customers to be aware of.

@Stephan
Could you kindly share per individual (i.e. for High Flow NEXT, High Flow 2 & High Flow LT units) product / SKU the range of Serial or batch numbers which we as customers can identify without opening/dismantling our units?

I am worried that if the damage has already been done by both a manufacturing defect to my new High Flow LT unit and the recent X.35 aquasuite update and accompanying Quadro firmware update.

I am still waiting for more parts by end of this week (hopefully) to fill up my custom loop - so that there is no question of “less coolant flow” or “less powerful pump” etc. excuses.

Stephan

Administrator

Wednesday, January 27th 2021, 1:42pm

11

This issue happend really rare. We can not match it with serial numbers. But we can say that it happend at much less than at 5% of the high flow NEXT sensors.

molesm

Newbie

Sunday, February 7th 2021, 7:48pm

12

Just added a Next Flow sensor into my loop and is does have an annoying clicking noise over about 120 litres an hour. Is this the excessive noise and I should seek a replacement?

bojer

Junior Member

Monday, February 8th 2021, 8:29pm

13

same here.

High speed sound
https://www.youtube.com/watch?v=T0osYYKcLYs

Low speed sound
https://www.youtube.com/watch?v=E7u4pm5FgTM

On low speed is still louder like all other stuff in case :thumbdown:

that click noise is annoying.

This post has been edited 1 times, last edit by "bojer" (Feb 8th 2021, 8:36pm)

Kuminauha

Junior Member

Tuesday, February 9th 2021, 7:17am

14

I just installed a Highflow flow sensor ( 53068 ) ( https://www.aquatuning.fi/vesijaeaehdyty…and-poweradjust). And this too makes a clicking sound.

This post has been edited 3 times, last edit by "Kuminauha" (Feb 9th 2021, 7:22am)

bojer

Junior Member

Tuesday, February 9th 2021, 7:34am

15

Quoted from "Kuminauha"

I just installed a Highflow flow sensor ( 53068 ) ( https://www.aquatuning.fi/vesijaeaehdyty…and-poweradjust). And this too makes a clicking sound.

This is problem if you install FLOW SENSOR verticaly. If don't want any nosie from this sensor you must install him horizontaly.