EK-Pro CPU Water Block LGA-4189
User Guide
Compatible with Intel Socket LGA-4189
Available Variants: N-ILM NI + POM-C | N-ILM AL + POM-C | N-ILM RACK NI + POM-C | N-ILM RACK AL + POM-C
Important Information and Guidelines
This product is intended for installation only by expert users. Consult with a qualified technician for installation. Improper installation may result in damage to your equipment. EK Water Blocks assumes no liability whatsoever, expressed or implied, for the use of these products nor their installation. Instructions are subject to change without notice. Visit www.ekwb.com for updates. Before installing, read the important notice, disclosure, and warranty conditions.
Before starting:
- Read this manual carefully before starting the installation process.
- Remove your graphics card from the computer to ensure the safest mounting process and prevent damage to your GPU and/or graphics card circuit board (PCB).
- EK-HFB and EK-ACF type fittings require minimal force to screw firmly in place due to rubber O-ring gaskets ensuring the liquid seal.
- The use of corrosion inhibiting coolants is always recommended for any liquid cooling system.
- Do not use pure distilled water. For best results, EK recommends the use of EK-CryoFuel coolants.
- Thoroughly bleed air from your water block for optimal performance.
General Information on Water Block Compatibility
This CPU liquid cooling unit is pre-assembled for use with modern Intel server socket-type motherboards. By default, this water block supports the following CPU sockets:
- Intel® Socket LGA-4189
Box Contents
Technical Specifications and Product Parts
The following items are enclosed with each EK-Pro LGA-4189 water block, depending on the version:
3831109844724 Ni + POM-C:
| Position | EAN | Description | Quantity |
|---|---|---|---|
| 1 | 103677 | TOP - Cover Annihilator LGA4189 | 1 |
| 2 | 103759 | M3x18 ISO 14583 Screw | 8 |
| 3 | 103116 | Plug G1/4 | 1 |
| 4 | 103675 | TOP - PA66 EK Annihilator Pro | 1 |
| 5 | 100442 | O-ring 66 x 2 mm EPDM70 | 1 |
| 6 | 103089 | M3 x 5 ISO 14581 Screw | 4 |
| 7 | 103679 | Annihilator Pro Jet | 1 |
| 8 | 3831109848715 | EK - Mounting Plate Pro CPU WB LGA4189 | 1 |
| 9 | 103674 | Coldplate Ni | 1 |
3831109844700 Ni rack + POM-C:
| Position | EAN | Description | Quantity |
|---|---|---|---|
| 1 | 103717 | TOP - Cover Annihilator LGA4189 Rack | 1 |
| 2 | 103759 | M3 x 18 ISO 14583 Screw | 8 |
| 3 | 3830046996435 | Plug G1/8 | 2 |
| 4 | 103676 | TOP - PA66 EK Annihilator Pro Rack | 1 |
| 5 | 100442 | O-ring 66 x 2 mm EPDM70 | 1 |
| 6 | 103089 | M3x5 ISO 14581 Screw | 4 |
| 7 | 103679 | Annihilator Pro Jet | 1 |
| 8 | 3831109848715 | EK - Mounting Plate Pro CPU WB LGA4189 | 1 |
| 9 | 103674 | Coldplate Ni | 1 |
3831109844731 Al + POM-C:
| Position | EAN | Description | Quantity |
|---|---|---|---|
| 1 | 103677 | TOP - Cover Annihilator LGA4189 Rack | 1 |
| 2 | 103759 | M3 x 18 ISO 14583 Screw | 8 |
| 3 | 3831109890639 | Plug G1/4 | 1 |
| 4 | 103675 | TOP - PA66 EK Annihilator Pro Rack | 1 |
| 5 | 100442 | O-ring 66 x 2 mm EPDM70 | 1 |
| 6 | 103089 | M3 x 5 ISO 14581 Screw | 4 |
| 7 | 103679 | Annihilator Pro Jet | 1 |
| 8 | 3831109848715 | EK - Mounting Plate Pro CPU WB LGA4189 | 1 |
| 9 | 103672 | Coldplate Al | 1 |
3831109844717 Al rack + POM-C:
| Position | EAN | Description | Quantity |
|---|---|---|---|
| 1 | 103717 | TOP - Cover Annihilator LGA4189 Rack | 1 |
| 2 | 103759 | M3 x 18 ISO 14583 Screw | 8 |
| 3 | 3831109810040 | Plug G1/8 | 2 |
| 4 | 103676 | TOP - PA66 EK Annihilator Pro Rack | 1 |
| 5 | 100442 | O-ring 66 x 2 mm EPDM70 | 1 |
| 6 | 103089 | M3x5 ISO 14581 Screw | 4 |
| 7 | 103679 | Annihilator Pro Jet | 1 |
| 8 | 3831109848715 | EK - Mounting Plate Pro CPU WB LGA4189 | 1 |
| 9 | 103672 | Coldplate Al | 1 |
Installing the Water Block
Step 1: Cleaning the CPU
Wipe the CPU's contact surface using a non-abrasive cloth or Q-tip. Apply thermal compound to a clean IHS (Integrated Heat Spreader) in a line and spread it over the entire CPU heat spreader using a credit card or equivalent. The layer of thermal compound must be thin and even. A too-thick application can lead to poor performance.
Step 2: Attaching the Processor Carrier to the Water Block
Important: Before proceeding, remove the protective foil from the backside of the water block. The CPU should be attached to the processor carrier before this step. The carrier typically comes with the server system or motherboard.
Align the water block with the processor carrier. Gently press the water block down onto the processor carrier. Ensure that all the locking tabs in all four corners lock into place before continuing.
Step 3: Installing the Water Block Assembly
Align the water block with the processor carrier, which is attached over the mounting screws on the LGA-4189 motherboard. Ensure the processor is oriented correctly, aligning the PIN 1 corners on the processor carrier and the socket.
Lower the water block onto the LGA-4189 socket integrated latch mechanism (ILM). Press the latches into the locked position to level the water block and ensure even contact across the whole CPU.
Next, use a T30 TORX screwdriver and tighten the corner nuts with 0.6 Nm of torque. EK recommends the use of an EK-Loop Torque Screwdriver - 0.6Nm or equivalent.
Recommendation: It is recommended to remove the motherboard from the PC chassis before proceeding with the installation of the processor and water block assembly due to space constraints in different computer cases.
The installation of the CPU water block is now complete.
Step 4: Installing the Fittings
Carefully identify the direction of flow in your circuit.
- For the non-rack version, EK recommends EK-HFB 10 mm barb fittings and EK-Tube ZMT 10/16 mm Matte Black tubing.
- For the rack version, EK-HFB Fitting 6 mm G1/8 and EK-Tube ZMT 6/9mm Matte Black tubing is recommended.
Important Note: With EK-Pro CPU non-rack water blocks, the port in the center of the water block must be used as the inlet port. For the rack version, the inlet port is on the right on both sides. Mixing the ports may result in reduced thermal performance.
Testing the Loop
To ensure the successful installation of EK components, EK recommends performing a 24-hour leak test.
When your loop is complete and filled with coolant, connect the pump to a PSU outside your system. Do not connect power to any other components. Turn on the PSU and let the pump run continuously.
Inspect all parts of the loop. If coolant leaks are found, fix the issue and repeat the testing process. To prevent possible damage, ensure that all hardware is dry before powering on the system.
Support and Service
For assistance or to order spare parts or a new mounting mechanism, please contact EK Water Blocks at: https://www.ekwb.com/customer-support/
For spare parts orders, refer to the "TECHNICAL SPECIFICATIONS AND PRODUCT PARTS" section to find the EAN number of each part. Include the EAN number and quantity in your request. Mounting Mechanism EAN can be found under "BOX CONTENTS".
Thermal pads are readily available in the EK shop.
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