Cooler Master MasterLiquid 240L Core White AIO Liquid Cooler User Manual

1. Product Overview

The Cooler Master MasterLiquid 240L Core White ARGB is an advanced All-In-One (AIO) liquid cooler designed to provide efficient thermal management for your CPU. This model features a redesigned Gen S dual chamber pump, an enlarged radiator surface area, and optimized 120mm ARGB fans for superior cooling performance. It includes premium CryoFuze thermal paste for enhanced heat conductivity.

Cooler Master MasterLiquid 240L Core White AIO Liquid Cooler

Figure 1.1: MasterLiquid 240L Core White AIO Liquid Cooler with radiator and pump assembly.

Key Features:

Clean Classic Design: A minimalist pump design with enhanced ARGB lighting dispersion for customizable illumination.
Gen S Dual Chamber Pump: Features an improved copper base for precise heat spot targeting and increased water flow/pressure for enhanced cooling.
CryoFuze Thermal Paste: Includes premium thermal paste with 14W/mK conductivity, stable from -50°C to 250°C.
Optimized Fan Blades: Newly designed 120mm ARGB fans with optimized PWM curve blades for improved airflow, air pressure, and quieter operation.
Frosted Blade Design: Enhances ARGB lighting dispersion for a vibrant and customizable luminous effect.

2. Product Components

Before beginning installation, please verify that all components listed below are present in your package:

MasterLiquid 240L Core AIO Unit (Radiator, Pump, Tubing)
Two (2) 120mm ARGB Fans
CryoFuze Thermal Paste (Tube)
Installation Kits (Mounting brackets, screws, backplates for various CPU sockets)
User Manual (This document)

Cooler Master MasterLiquid 240L Core White AIO Liquid Cooler components

Figure 2.1: Included components of the MasterLiquid 240L Core White AIO Liquid Cooler.

3. Setup and Installation

This section provides general guidelines for installing your MasterLiquid 240L Core White AIO Liquid Cooler. Refer to the detailed instruction booklet included in your package for specific, step-by-step diagrams tailored to your CPU socket type.

3.1 Socket Compatibility

The cooler supports a wide range of CPU sockets, including:

AMD: Ryzen AM5, AM4
Intel: LGA1700, LGA1200

Cooler Master AIO Liquid Cooler socket compatibility brackets for AMD and Intel

Figure 3.1: Mounting brackets for various AMD and Intel CPU sockets.

3.2 General Installation Steps (Consult included manual for details)

Prepare Motherboard: Install the appropriate backplate for your CPU socket type on the rear of the motherboard.
Apply Thermal Paste: Apply the included CryoFuze thermal paste to the center of your CPU's Integrated Heat Spreader (IHS). A pea-sized amount is generally sufficient.

Application of CryoFuze thermal paste on CPU

Figure 3.2: Applying CryoFuze thermal paste to the CPU.

Mount Pump/Coldplate: Secure the pump/coldplate assembly onto the CPU, aligning it with the mounting screws. Tighten screws evenly in a cross pattern until snug.
Install Radiator and Fans: Mount the radiator to an available fan mount location in your PC case (e.g., top, front, or rear). Attach the two 120mm ARGB fans to the radiator, ensuring proper airflow direction (typically pushing air through the radiator).

Figure 3.3: The slim radiator design for efficient heat dissipation.

Connect Cables:
- Connect the pump power cable to the designated AIO_PUMP or CPU_FAN header on your motherboard.
- Connect the fan PWM cables to CPU_FAN or other available fan headers on your motherboard.
- Connect the ARGB cables from the fans and pump to a compatible 3-pin ARGB header on your motherboard or an ARGB controller.

Note: Some users have found the included instructions to be concise. If you encounter difficulties, refer to the detailed diagrams in the physical manual or search for installation guides specific to your motherboard and case.

4. Operating Instructions

4.1 Fan Speed Control (PWM)

The 120mm fans utilize Pulse Width Modulation (PWM) technology, allowing for dynamic fan speed adjustment based on CPU temperature. This balances cooling performance with noise levels. Fan speeds can range from 650 to 1,750 RPM (±10%).

Figure 4.1: Illustration of dynamic PWM fan speed adjustment.

You can configure fan curves through your motherboard's BIOS/UEFI settings or using compatible motherboard software (e.g., ASUS AI Suite, MSI Dragon Center, Gigabyte SIV, ASRock A-Tuning).

4.2 ARGB Lighting Control

The MasterLiquid 240L Core White features Addressable RGB (ARGB) lighting on both the pump and fans. This allows for extensive customization of lighting effects and colors.

Frosted blade design enhancing ARGB lighting

Figure 4.2: Frosted fan blade design for enhanced ARGB light dispersion.

To control the ARGB lighting, connect the ARGB cables to a compatible 3-pin ARGB header on your motherboard. You can then use your motherboard's RGB software (e.g., ASUS Aura Sync, MSI Mystic Light Sync, Gigabyte RGB Fusion, ASRock Polychrome RGB) to synchronize and customize the lighting. If your motherboard lacks an ARGB header, an external ARGB controller (sold separately) may be required.

5. Maintenance

Regular maintenance helps ensure optimal performance and longevity of your AIO liquid cooler.

Dust Removal: Periodically clean dust from the radiator fins and fan blades using compressed air. Ensure the fans are not spinning rapidly during cleaning to prevent damage.
Inspect Tubing and Connections: Occasionally check the tubing for any signs of kinks, leaks, or damage. Ensure all connections to the pump and radiator are secure.
Monitor Performance: Use monitoring software to keep track of CPU temperatures and fan speeds. Significant deviations from normal operating temperatures may indicate an issue.
No Coolant Refill Needed: This is a closed-loop AIO system and does not require coolant refilling or maintenance.

6. Troubleshooting

This section addresses common issues you might encounter with your liquid cooler.

Problem	Possible Cause	Solution
High CPU Temperatures	Insufficient thermal paste application. Poor contact between coldplate and CPU. Fans not spinning or spinning too slowly. Radiator clogged with dust. Pump not functioning.	Reapply thermal paste, ensuring even coverage. Ensure mounting screws are tightened evenly. Check fan connections and BIOS settings for fan curves. Clean radiator fins with compressed air. Verify pump power connection and listen for pump operation.
Excessive Noise	Fans spinning at high RPM. Air bubbles in the pump (gurgling sound). Loose fan screws or vibrations.	Adjust fan curves in BIOS/software to lower RPM at idle. Orient radiator higher than the pump to allow air bubbles to collect in the radiator. Gently tilt the case to help move bubbles. Ensure all fan screws are securely fastened.
ARGB Lighting Not Working	Incorrect ARGB header connection (e.g., 4-pin RGB instead of 3-pin ARGB). Software conflict or incorrect settings. Loose cable connection.	Verify connection to a 3-pin 5V ARGB header. Ensure ARGB software is installed and configured correctly. Try reinstalling. Check all ARGB cable connections.

7. Technical Specifications

Feature	Specification
Product Dimensions	13 x 9.4 x 5.4 inches (330.2 x 238.8 x 137.2 mm)
Product Weight	4.2 Pounds (1.9 kg)
Item Model Number	MLW-D24M-A18PZ-RW
Power Connector Type	3-Pin (Pump), 4-Pin PWM (Fans)
Voltage	12 Volts
Wattage	3.96 watts (Pump)
Cooling Method	Water
Compatible Devices	Desktop PCs (AMD AM5/AM4, Intel LGA1700/1200)
Noise Level	27.2 dB (Fans, Max)
Material	Aluminum (Radiator), Copper (Coldplate), Plastic
Maximum Rotational Speed	1800 RPM (Fans)
Air Flow Capacity	71.93 Cubic Feet Per Minute (CFM)
Radiator Dimensions	277 x 119.6 x 27.2 mm (10.9 x 4.7 x 1.1 inches)

8. Warranty and Support

For detailed warranty information, technical support, and service inquiries, please visit the official Cooler Master website. The website provides resources such as FAQs, driver downloads, and contact information for customer service.

Official Cooler Master Website: www.coolermaster.com

Cooler Master MLW-D24M-A18PZ-RW