Introduction
Thank you for choosing the SAMA L40 240mm AIO CPU Liquid Cooler. This all-in-one liquid cooling system is designed to provide efficient heat dissipation for high-performance computing, featuring vibrant ARGB lighting and quiet PWM fans. This manual provides detailed instructions for installation, operation, maintenance, and troubleshooting to ensure optimal performance and longevity of your cooler.
Safety Information
- Always disconnect power from your computer before installation or maintenance.
- Handle components with care to avoid damage.
- Ensure proper grounding to prevent electrostatic discharge.
- Keep out of reach of children.
- Do not attempt to open the pump or radiator, as this may void the warranty and cause leaks.
Package Contents
Verify that all components are present before beginning installation:
- SAMA L40 240mm AIO Liquid Cooler (Radiator, Pump, Tubing, Pre-installed Fans)
- Intel Mounting Hardware (Backplate, Standoffs, Thumb Nuts)
- AMD Mounting Hardware (Retention Brackets, Screws, Thumb Nuts)
- Thermal Paste
- User Manual

Figure 1: Included mounting hardware and accessories for the SAMA L40 AIO cooler.
Setup and Installation
This section guides you through the installation process for both Intel and AMD platforms. Please refer to the video for a visual demonstration.
Video 1: Installation guide for SAMA L60 water cooling system, applicable to L40 series for general steps.
1. Intel Platform Installation (LGA 1851/1700/1200/115X/20XX/1366)
- Prepare Motherboard: From the front of the motherboard, install the four Intel Socket standoffs into the appropriate holes around the CPU socket.
- Apply Thermal Paste: Apply a small, pea-sized amount of thermal paste to the center of your CPU's integrated heat spreader (IHS). Use the provided spatula to spread it evenly across the surface.
- Prepare Water Block: Remove the protective film from the copper base of the water block.
- Mount Water Block: Carefully place the water block onto the CPU, ensuring the standoffs go through the holes in the bracket.
- Secure Water Block: Install the thumb nuts onto the standoffs in a diagonal pattern (1-3-2-4) to ensure even pressure. Tighten them only after all four are in place.
2. AMD Platform Installation (AM5/AM4)
- Remove Stock Brackets: Replace the motherboard's pre-installed CPU retention brackets with those included in the component kit.
- Apply Thermal Paste: Apply a small, pea-sized amount of thermal paste to the center of your CPU's integrated heat spreader (IHS). Use the provided spatula to spread it evenly across the surface.
- Prepare Water Block: Remove the protective film from the copper base of the water block.
- Mount Water Block: Carefully place the water block onto the CPU, ensuring the standoffs go through the holes in the bracket.
- Secure Water Block: Install the thumb nuts onto the standoffs in a diagonal pattern (1-3-2-4) to ensure even pressure. Tighten them only after all four are in place.
3. Connecting Cables
- Pump Power: Connect the pump's 3-Pin connector to the AIO_PUMP or CPU_OPT header on your motherboard.
- Pump ARGB: Connect the pump's 5V 3-Pin ARGB connector to the corresponding addressable RGB header on your motherboard.
- Fan Power: Connect the fan's 4-Pin PWM connector to the CPU_FAN or a SYS_FAN header on your motherboard.
- Fan ARGB: Connect the fan's 5V 3-Pin ARGB connector to the corresponding addressable RGB header on your motherboard.

Figure 2: The SAMA L40 AIO cooler fully installed in a system, showcasing its ARGB lighting.
Operating Instructions
- ARGB Lighting Control: The ARGB lighting for the fans and pump can be controlled via your motherboard's RGB software (e.g., ASUS Aura Sync, MSI Mystic Light, Gigabyte RGB Fusion, ASRock Polychrome Sync) if connected to a compatible 5V 3-Pin ARGB header. Refer to your motherboard manual for specific software instructions.
- Fan Speed Control: The PWM fans' speed can be controlled through your motherboard's BIOS settings or fan control software. Adjust the fan curve to balance cooling performance and noise levels according to your preference and system load.
Maintenance
- Cleaning Fans and Radiator: Periodically (every 3-6 months, or more often in dusty environments) use compressed air to clean dust from the radiator fins and fan blades. Ensure the fans are not spinning during cleaning to prevent damage.
- Tubing and Connections: Inspect the tubing and connections for any signs of leaks or damage. While AIOs are sealed, regular visual checks are recommended.
- Thermal Paste: Reapplying thermal paste is generally not required unless the cooler is removed from the CPU. If reinstallation occurs, clean off old thermal paste and apply new paste.
Troubleshooting
- No Power/Lights: Check all power and ARGB connections to the motherboard. Ensure the pump and fans are connected to the correct headers. Verify motherboard BIOS settings for fan and RGB control.
- High CPU Temperatures: Ensure the water block is securely mounted to the CPU with even pressure. Verify thermal paste application. Check fan orientation for proper airflow (intake/exhaust). Ensure pump is running (listen for a faint hum or check motherboard monitoring software).
- Excessive Noise: Adjust fan curves in BIOS or software to reduce fan speed at lower temperatures. Check for any cables obstructing fan blades. Ensure pump is not vibrating against other components.
- ARGB Not Syncing: Confirm the 5V 3-Pin ARGB connector is correctly plugged into an addressable RGB header, not a 12V 4-Pin RGB header. Use your motherboard's RGB software to control lighting effects.
Specifications
| Feature | Specification |
|---|---|
| Model No. | L40 BK |
| CPU Socket Compatibility | Intel LGA 1851/1700/1200/115X/20XX/1366 & AMD AM5/AM4 |
| Radiator Dimensions (L x W x H) | 277mm x 120mm x 27mm |
| Radiator Material | Aluminum |
| Pump Dimensions (L x W x H) | 74mm x 89mm x 52mm |
| Pump Speed | 2500 RPM ±10% |
| Pump Connector | 12VDC 3-Pin |
| Pump Max Current | 0.3A |
| Pump Lighting Type | ARGB |
| Pump Lighting Connector | 5V 3-Pin |
| Pump Lighting Max Current | 0.29A |
| Fan Dimensions | 120mm x 120mm x 25mm |
| Fan Bearing Type | Hydraulic Bearing |
| Fan Speed | 800-2000 RPM ±10% |
| Airflow | 83 CFM |
| Static Pressure | 2.6 mmH2O |
| Max Noise Level | 29 dB-A |
| Fan Connector | 4-Pin PWM |
| Fan Rated Voltage | 12VDC |
| Fan Max Current | 0.35A |
| Fan Lighting Type | ARGB |
| Fan Lighting Connector | 5V 3-Pin |
| Fan Lighting Max Current | 0.28A |
Warranty
The SAMA L40 240mm AIO CPU Liquid Cooler comes with a 3-year warranty. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims. For detailed warranty terms and conditions, refer to the official SAMA website or contact customer support.
Support
For further information, technical assistance, or to register your product, please visit the official SAMA website:
You may also contact SAMA customer support directly:
- Manufacturer: Guangzhou Aojie Technology Co., Ltd
- Address: Room 901, building 1, No.30 Mingzhu avenue south, Mingzhu industrial, CongHua district, Guangzhou, China
- TEL: 020-36031688