What Is Coolant Quality Verification?_
This verification confirms that the coolant’s electrical resistivity, particle count, pH, and corrosion inhibitors are within acceptable ranges to prevent galvanic corrosion, clogging, or electrical shorts in cold plates and manifolds. It is typically performed using portable test kits or lab analysis on samples drawn from the loop after filling and before final commissioning. Any deviation requires flushing or replacing the coolant to protect the high-value GPU hardware.
Technical Details
For dielectric coolants, resistivity must be above a threshold (commonly >1 MΩ·cm) to avoid leakage currents through the fluid; particle counts are checked against ISO cleanliness codes (e.g., ISO 4406) to prevent microchannel blockages. Water-glycol mixtures are tested for glycol concentration (via refractometer), pH (typically 8.0–9.5), and inhibitor levels (e.g., molybdate or tolyltriazole) per the OEM spec. Sampling points are usually at the reservoir or a dedicated test port on the CDU (Coolant Distribution Unit) return line. Results are logged in the commissioning report and compared against the system’s acceptance criteria.
How Leviathan Systems Works with Coolant Quality Verification
During Leviathan Systems field commissioning, the crew draws coolant samples from each CDU after filling and before powering GPUs, using handheld meters or sending vials to a lab. A failed verification stops the rack turn-up until the coolant is corrected, as it directly impacts warranty and reliability.
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