RackCDU is designed and built to prevent leaks. The stator and pump rotor are magnetically coupled, eliminating a shaft seal that could leak. Every joint is double sealed and every cooler is helium leak tested at the factory. Lastly, the server coolers operate at very low pressure (less than 0.5 PSI) so in the unlikely event that a leak does occur, it will drip, not spray. Server liquid and facilities liquid are separated at the RackCDU. As a result, the amount of liquid that could ever leak in the rack is limited to about 8.5 liters.
Leak detection is provided at the bottom of the RackCDU extension. The monitoring system is capable of notifying staff via e-mail or SNMP alerts.