The AquaCal AutoPilot DIG-220 Power Supply Fan Assembly is a replacement component used in compatible AutoPilot salt chlorination systems. The fan assembly helps support proper airflow inside the power supply area, assisting with temperature control and reliable operation of the electronic components. A failed or noisy fan can contribute to overheating or inconsistent system performance.This part is intended for service and repair of compatible DIG-220 power supply units. Replace the fan assembly when the existing fan is not running, making excessive noise, damaged, or no longer moving air properly through the enclosure. Replacement fan assembly for compatible AutoPilot systems Designed for DIG-220 power supply applications Helps maintain airflow around electronic components Useful when servicing noisy, failed, or damaged fans Confirm part number 630 before ordering