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Official guide · CoralPlast Support

CoralPlast automatic roller filters — installation, float switch and controller

Choose the video for your model, install the fleece correctly, adjust the float switch gradually and configure CP-Control PLUS.

Models
CP-4 · CP-10 · CP-10 MAX · CP-15 · CP-20 · CP-RS · CP-WB · CP-BM · CP-OFF
Controller Wi-Fi
CP-Controller-XXXX
Local interface
192.168.4.1

This guide covers the steps common to CoralPlast filters. Start by assembling the model you purchased, then adjust the float switch once the filter is installed in the sump.

Last revision: October 1, 2026
01

Before you start

A few checks prevent most operating issues.

!
Pay particular attention during the first few days.

Check fleece movement and float position, and unplug the filter during maintenance that causes an unusually high water level.

Recommended order: assembly → installation in the sump → controller test → gradual float adjustment.
02

Choose the assembly video

Each model has its own assembly details.

Assembly for Red Sea, Waterbox and Blue Marine.
Operation, assembly and installation.
Roller filter for tanks without a sump.
Assembly of standard CoralPlast models.
03

CP-Control PLUS — AP mode

Local setup through the controller Wi-Fi network.

1

Power on the controller

Wait 20 to 30 seconds for the Wi-Fi network to appear.

2

Temporarily disable mobile data

This prevents the phone from looking for Internet access instead of opening the local interface.

3

Connect to the network

Choose the SSID shown on the label, for example CP-Controller-XXXX. Password: 123456789.

4

Open the interface

In the browser, enter http://192.168.4.1 then select your language.

SSID depending on version: the network may appear as CP-Controller-XXXX on some versions, or CP-Control_XXXXXX after firmware 2.0 update. Check the label on your controller. For the firmware procedure, see the CP-Control PLUS guide.
04

Final installation and float adjustment

The float switch determines when the filter advances.

1

Install the filter in its position

Check that the fleece runs correctly over the rollers and that water flows through the filter as intended.

2

Start with the float high

Place the sensor as high as possible at first to avoid excessive fleece consumption.

3

Adjust after the filter loads

As the filter becomes loaded and the water starts to reach the overflow, slowly lower the sensor until it activates.

4

Monitor the first week

Regularly check fleece movement, float position and that nothing is jammed.

05

Quick troubleshooting

Simple checks before contacting support.

The filter advances too often

The float is probably too low or the fleece is incorrectly positioned. Raise the float and check water flow.

The motor does not stop during the test

Cut the power and check the float switch connection before returning the filter to service.

The 192.168.4.1 page does not open

Stay connected to the controller Wi-Fi even if the phone says “no Internet access”, then temporarily disable mobile data.

06

Checklist before use

One final quick check.

Check

  • Watched the video for your model.
  • Fleece correctly positioned on the rollers.
  • Controller tested manually.
  • Float switch adjusted gradually.
  • Filter monitored during the first week.

Avoid

  • Setting the float too low from the start.
  • Leaving the filter powered during maintenance that greatly raises the water level.
  • Running the motor dry for a long time.

Need personalised help?

Tell us the exact model, describe the behaviour you observe and, if possible, attach a photo or short video of the installation.

Contact CoralPlast