Introduction
The ARCTIC Liquid Freezer II 280 A-RGB is a high-performance all-in-one CPU liquid cooler designed to provide efficient cooling for your processor. It features A-RGB lighting for customizable aesthetics, an efficient PWM-controlled pump, and fans optimized for static pressure. This manual provides essential information for the proper installation, operation, and maintenance of your Liquid Freezer II 280 A-RGB cooler.
Package Contents
Before beginning installation, please verify that all components are present in the package:
- ARCTIC Liquid Freezer II 280 A-RGB (Pre-assembled with radiator and fans)
- Backplate (for Intel sockets)
- Mounting Clips (for Intel and AMD sockets)
- Screws for Radiator
- Flat Washers for Radiator
- Thumb Nuts
- Standoffs (for Intel Socket 115X/1700)
- Screws for Mounting Clips
- Washers (for Backplate)
- ARCTIC MX-4 Thermal Compound (0.8g)

Image: All components included in the ARCTIC Liquid Freezer II 280 A-RGB package.
Setup and Installation
This section provides detailed instructions for installing the ARCTIC Liquid Freezer II 280 A-RGB cooler. Ensure your system is powered off and unplugged before proceeding.
1. CPU Preparation
Install your CPU into the motherboard socket and secure the retention arm. Clean the CPU's integrated heat spreader (IHS) surface thoroughly to remove any dust or residue. Apply the included ARCTIC MX-4 thermal compound to the center of the CPU's IHS. A small, pea-sized amount is generally sufficient.

Image: CPU installed in the motherboard socket, ready for thermal paste application.
2. Backplate and Standoffs Installation (Intel Sockets)
For Intel sockets (LGA1700, 1200, 115X, 2011-3, 2066), attach the appropriate backplate to the rear of your motherboard. Secure it using the provided washers and standoffs. Ensure the standoffs are firmly seated.

Image: The cooler supports various Intel and AMD sockets, including LGA1700 and AM5.
3. Mounting Clips and Pump Installation
Attach the correct mounting clips to the pump block. Carefully remove the protective film from the copper cold plate of the pump. Align the pump block with the standoffs on the motherboard and gently lower it onto the CPU. Secure the pump block by tightening the thumb nuts evenly in a diagonal pattern until snug.

Image: Internal view of the efficient, proprietary pump design.
4. Radiator Installation
Mount the radiator to an available fan mounting location in your PC case (e.g., top or front). Use the provided screws and flat washers to secure the radiator. Ensure proper airflow direction for optimal cooling performance.

Image: The cooler features high-quality tubing with integrated cable management for a clean build.
5. Cable Connections
Connect the 4-pin PWM connector from the pump to your motherboard's CPU_FAN or AIO_PUMP header. Connect the 3-pin 5V-DI-Gnd A-RGB connector from the fans to your motherboard's addressable RGB header. Refer to your motherboard manual for specific header locations.

Image: The fans feature 12 A-RGB LEDs for customizable illumination.
Installation Video Guide
For a visual guide on the installation process, please refer to the official video below:
Video: Installation guide for ARCTIC Liquid Freezer II 240/280 on Intel 115X sockets. This video demonstrates the steps for mounting the cooler, applying thermal paste, and connecting cables.
Operating Instructions
The ARCTIC Liquid Freezer II 280 A-RGB is designed for optimal performance with minimal user intervention after installation.
- PWM Control: The pump and fans are PWM-controlled, meaning their speed will automatically adjust based on CPU temperature to maintain optimal cooling and noise levels. This is managed by your motherboard's BIOS/UEFI settings.
- A-RGB Lighting: The 24 digital A-RGB LEDs on the fan hubs can be controlled via your motherboard's RGB software (e.g., ASRock Polychrome Sync, MSI Mystic Light Sync, Gigabyte RGB Fusion 2.0, ASUS Aura Sync, ARGB Gen2). Ensure your motherboard supports addressable RGB for full customization.
Maintenance
Regular maintenance helps ensure the longevity and performance of your liquid cooler.
- Dust Removal: Periodically clean the radiator fins and fan blades to prevent dust buildup, which can impede airflow and reduce cooling efficiency. Use compressed air or a soft brush.
- Hose Inspection: Visually inspect the hoses for any signs of kinks, leaks, or damage. While the system is sealed, regular checks are recommended.
- Thermal Paste: The pre-applied thermal paste is designed for long-term use. Reapplication is generally not necessary unless the cooler is removed from the CPU.
Troubleshooting
If you encounter issues with your ARCTIC Liquid Freezer II 280 A-RGB, consider the following common solutions:
- High CPU Temperatures:
- Ensure the pump block is securely mounted and making full contact with the CPU.
- Verify that thermal paste was applied correctly and evenly.
- Check if the fans are spinning and the radiator is free of dust.
- Confirm that the pump and fan cables are correctly connected to the motherboard headers.
- Unusual Noise:
- Check for any cables or objects obstructing the fan blades.
- Ensure the radiator and fans are securely mounted to the case.
- Verify that the pump is operating smoothly.
- A-RGB Lighting Not Working:
- Confirm the A-RGB cable is correctly connected to a 5V-DI-Gnd header on your motherboard.
- Check your motherboard's RGB software settings.
For further assistance, please contact ARCTIC customer support.
Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 9.45"L x 27.17"W x 0.98"H |
| Brand | ARCTIC |
| Power Connector Type | 4-Pin |
| Voltage | 12 Volts |
| Wattage | 2.04 watts |
| Cooling Method | Water |
| Compatible Devices | Intel: 1150, 1151, 1155, 1156, 1200, 1700; AMD: AM5, AM4, 2011(-3), 2066 |
| Noise Level | 0.3 Sones |
| Material | Aluminum, Copper, Polycarbonate, Rubber |
| Maximum Rotational Speed | 1900 RPM |
| Air Flow Capacity | 68.9 Cubic Feet Per Minute |
| Item Weight | 4.67 pounds |
| Color | Black |
Warranty Information
ARCTIC products undergo rigorous quality control. For detailed warranty terms and conditions, please refer to the official user manual provided with your product or visit the ARCTIC support website. The product is marked with a QC sticker indicating it has passed additional quality assurance tests.
Customer Support
For technical support, troubleshooting assistance, or any inquiries regarding your ARCTIC Liquid Freezer II 280 A-RGB, please visit the official ARCTIC support page or contact their customer service department. You can find more information and resources on the ARCTIC Store on Amazon.





