Noctua NF-A4x20 Manual

Noctua Hardwarekoeling NF-A4x20

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Side 1/2

Dear customer,

Congratulations on choosing the Noctua NF-A4x20 FLX.

We from Noctua always strive to achieve superior quiet cooling performance

regardless of whether it’s a big 140mm fan or a small 40mm one.

That’s why the NF-A4x20 FLX sports many of the features and advanced

aerodynamic design measures of our award-winning larger models, making it

perhaps the most thoroughly optimised 40mm fan on the market.

Each Noctua fan is double checked for flawless operation by our quality control

team before it leaves the factory and I’m confident that you will be able to sense

some of the research, attention and care we’ve put into making this product.

Enjoy your NF-A4x20 FLX!

Yours sincerely,

Roland Mossig, Noctua CEO

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This document includes some instructions for

installing, running and cleaning your NF-A4x20 FLX.

Should you have any further questions, our support

team (support@noctua.at) will be glad to assist you

at any time.

Please also have a look at the regularly updated FAQs

on our website: http://www.noctua.at/faqs

This document is also available in other languages at

the following URL: http://www.noctua.at/manuals

Designed in Austria, Noctua’s premium cooling

components are internationally renowned for

their superb quietness, exceptional performance

and thoroughgoing quality.

Having received more than 6000 awards and

recommendations from leading hardware

websites and magazines, Noctua’s fans and

heatsinks are chosen by more than a hundred

th o usan d sa t i sf ied cus tom e r s aro u n d th e glob e.

sales@noctua.at

www.noctua.at

Fans inside computer cases tend to accumulate dust over longer

periods of usage. In order to maintain maximum performance, please

clean your fans regularly using a duster, slightly moist tissue or canned

air. Please be careful not to use too much force in order to prevent any

damage to the fan. Please don’t use a vacuum cleaner as this may apply

excessive force to the fan.

In order to ensure flawless operation over many years of usage, the

NF-A4x20 FLX’s premium grade SSO2 bearing is fully sealed to prevent

the entering of fine dust particles. Please note that the fan is not designed

to be taken apart by the user. Removing the impeller from the frame will

break the sealing of the bearing and results in a loss of warranty.

Cleaning and Maintenance

If you replace an existing 40mm fan with the NF-A4x20 FLX in devices such as storage or network solutions, it is usually best to use the screws (or other

mounting mechanism) used for the original fan.

When installing the NF-A4x20 FLX as a case fan, you can either use the supplied mounting screws or NA-AV3 silicone anti-vibration mounts. For installing the

fan using the NA-AV3 mounts, please first pull the F side through the fan’s mounting holes until pawl 4 is all the way through the hole.

Installation Connection

OmniJoin adaptor

3M Skotchlok

connectors

Connector of the original fan

+12V

GND

Make sure to correctly

identify the GND and

+12V leads of the

original fan!

After you’ve identified the individual leads, please proceed with

the following steps to install the OmniJoin adaptor:

Step 1

Cut off the connector of the fan that was originally used in the device.

Make sure not to cut the cable directly at the connector, there should be

least a 2-3 cm of cable left:

2-3cm minimum!

Step 3

Then use flat nose pliers to push down the white button of the

Skotchlok™ connector. Make sure that the button is not jammed and

pushed all the way down. If the button is jammed, push it down from

both sides of the Skotchlok™ connector using the flat nose pliers.

After you’ve fixed the original fan’s cable to the OmniJoin adaptor using

the Skotchlok™ connectors, simply connect the NF-A4x20 FLX to the

adaptor in order to use it in your device.

Repeat Step 2 and 3 for the +12V lead.

Step 2

Then take one of the supplied 3M Skotchlok™ connectors and insert

the GND lead of the original cable and the black lead of the OminJoin

adaptor into the two holes of the Skotchlok™ connector. Make sure that

both leads are fully inserted and pushed all the way back.

The black lead of the adaptor has to be matched with the original GND

lead and the red adaptor cable with the original +12V lead. Many fan

cables use the same colours as the OmniJoin adaptor, but please note

that there is no guarantee for this, so make sure to correctly identify the

GND and +12V leads of the original fan. Please refer to the manual

that came with the device or contact the device manufacturer if in doubt.

The NF-A4x20 FLX features a standard 3-pin fan connector. However,

please note that the fan can also be connected to standard 4-pin fan

headers. If you would like to connect the fan to other fan headers, please

use the supplied OmniJoin adaptor set as described below.

The NF-A4x20 FLX features a short 20cm primary cable in order to help

you minimise cable clutter in typical applications. If you need a longer

cable, please add the supplied 30cm extension (NA-EC2).

The NF-A4x20 FLX comes with Low-Noise (NA-RC10) and Ultra-Noise

Adaptors (NA-RC12) that allow you to reduce the fan speed from 5000

to 4400rpm (NA-RC10) and 3700rpm (NA-RC12) in order to achieve

even quieter operation.

Using the OmniJoin adaptor set

The supplied OmniJoin adaptor set allows you to easily connect the

NF-A4x20 FLX to proprietary fan headers if you want to replace a 40mm

fan in devices such as network or storage solutions.

Please first identify the individual leads of the OmniJoin adaptor and

the original fan. The OmniJoin adaptor uses black for ground (GND) and

red for +12V.

Then pull the C side through the mounting holes of the case. If the long ends of the mounts are in the way, you can use scissors to cut them after installation.

Note that this will then make them difficult to reinstall in the future.

Warranty and Support

Even with high-grade products and strict quality control, the possibility of

defects cannot be eliminated entirely. Therefore, we aim at providing the

highest possible level of reliability and convenience by offering a warranty

period of 6 years and direct, fast and straightforward RMA service.

Should you encounter any problems with your NF-A4x20 FLX, please

don’t hesitate to contact our support team (support@noctua.at).

Caution: Only pull pawl 4 through the first hole.

Don’t overstretch the mounts by pulling further pawls through!

www.noctua.at

NF-A4x20 FLX