MO-RA IV 400 - Refroidisseur liquide Watercool - Free user manual and instructions
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| Product Type | External Radiator (Water Cooling) |
| Model | MO-RA IV 400 |
| Dimensions (W x H x D) | 400 x 400 x 65 mm |
| Weight | Approx. 8.5 kg (empty) |
| Material (Core) | Copper / Brass |
| Material (Housing) | Stainless Steel / ABS Plastic |
| Max Fan Support | 9x 120mm or 4x 200mm |
| Ports | 8x G1/4" threaded ports |
| Max Operating Pressure | 1.5 bar |
| Coolant Capacity | Approx. 1.2 L |
| Recommended Coolant | Distilled water with corrosion inhibitor |
| Motor / Pump Compatibility | External pump (e.g., D5 or DDC) recommended |
| Installation | Freestanding or wall mount via included bracket |
| Maintenance | Annual coolant replacement; clean fans and fins with compressed air |
| Cleaning | Use isopropyl alcohol for grease; avoid abrasive cleaners |
| Safety | Do not operate without coolant; avoid metal shavings in loop |
| Spare Parts | Fan grills, port plugs, mounting brackets available separately |
| Repairability | Modular design; core assembly can be replaced |
| Warranty | 2 years (subject to terms) |
| Manufacturer | Watercool |
Frequently Asked Questions - MO-RA IV 400 Watercool
What fans are compatible with the MO-RA IV 400?
The MO-RA IV 400 supports up to 9x 120mm or 4x 200mm fans. Use high-static pressure fans for best performance.
Can I use this radiator with a standard PC water cooling loop?
Yes, but you will need an external pump (e.g., D5 or DDC) and tubing adapters. The radiator has G1/4 ports standard in custom loops.
What is the recommended pump?
A high-flow pump like the Watercool D5 or Laing DDC is recommended due to the large volume and potential head loss.
How do I mount the MO-RA IV 400?
It can be placed freestanding on its feet or wall-mounted using the supplied bracket. Ensure it is stable and level.
What coolant should I use?
Use distilled water with a corrosion inhibitor (e.g., Watercool's own coolant). Avoid automotive antifreeze.
How often should I replace the coolant?
Annually or when discoloration occurs. Flush the system with distilled water before refilling.
What is the cooling capacity?
The MO-RA IV 400 can dissipate over 1000W with adequate fan speed, suitable for high-end CPUs and multiple GPUs.
Can I use this radiator without fans?
Passive operation is possible but not recommended; you will need at least low-speed fans to move air through the dense fin array.
Is the MO-RA IV 400 noisy?
Noise depends on fan choice and speed. With quality fans at low RPM, it can be nearly silent while still providing excellent cooling.
What is the warranty period?
Watercool offers a 2-year warranty covering manufacturing defects. Register your product on their website.
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USER MANUAL MO-RA IV 400 Watercool
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Product information
Brand : Watercool
Model : MO-RA IV 400
Category : Refroidisseur liquide