> For the complete documentation index, see [llms.txt](https://promega.printm3d.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://promega.printm3d.com/repair-and-maintenance/install-uninstall/filtration-system.md).

# Filtration System

## What is the Filtration System?

This is the filtration system.

![](/files/-LQ5iUZcKUp1UNgLA9SR)

A blower fan pulls air from the printer's inside.

The pulled air is blown into a HEPA filter.

The filtered air is ejected into the printer's inside.

## How To Install

Look at the two holes used for the filtration system. Face the backside of your printer.

![](/files/-LPboiiYmLymze0zmhSy)

Slide the HEPA filter into the printed duct.

![](/files/-LPc2HWdh3CC0bo8AANZ)

Make sure the carbon layer (black) is facing the clip side.

![](/files/-LPc4tAqwx0vTZ0BRwTB)

Install the printed part onto the left hole (as shown below). Use the short screws (M3 x 12 mm).

{% hint style="info" %}
Install loosely.
{% endhint %}

![](/files/-LPboktGyb-cqUnv0Sfv)

Clip the blower fan into the duct.

{% hint style="info" %}
Make sure you the label is pointing outward (as shown below).
{% endhint %}

![](/files/-LPbrLVLC0VgAPMZgqfM)

Install the blower fan onto the right hole (as shown below).

{% hint style="info" %}
Install loosely.
{% endhint %}

![](/files/-LPbomR7Ybg3540v5fKO)

Check to see the blower fan is clipped into the duct.

Tighten all screws down.

Plug the blower fan cable into :

**FAN0 (K'Tana or Compound)**

![](/files/-LPbtHUsYJD-Foz4FdxL)

**FAN2 (Promega-Quad ONLY)**

![](/files/-LbUQq_q2-bu2tdN-eEI)

***Make Sure*** the blower fan's **BLACK** wire (ground) is installed on the **LEFT** pin.

![](/files/-LPbubyEngNebg3WsOLD)

{% hint style="warning" %}
The blower fan will be damaged if installed backward. 
{% endhint %}

### Additional Software Changes

Open your web control browser

Go to the ***Settings*** tab.

Click the ***System Editor*** tab.

Look for the ***config.g*** file. Open it (double click).

![](/files/-LPbxNJKxMMsbBl4K6OS)

Look for the FANS header.

```
; --- SECTION: FANS ( ) ---
```

Search for this specific code.

```
M106 P0 S0 I0 F4 H-1 L0.3
```

{% hint style="info" %}
***(Promega-Quad ONLY)***

Search for this specific code INSTEAD:

`M106 P2 S0 I0 F4 H-1 L0.3`
{% endhint %}

Change S0 to S1.

```
M106 P0 S1 I0 F4 H-1 L0.3
```

{% hint style="info" %}
***(Promega-Quad ONLY)***

`M106 P2 S1 I0 F4 H-1 L0.3`
{% endhint %}

Click "Save Changes."

Done.