AquaCal AutoPilot ST-220 Fan Assembly (630-ST) calvertengineering The 1 inch slip connections

The 1 inch slip connections help preserve the intended plumbing and assembly relationship

and surface-contact cleaning

Useful when the original pump is weak or nonfunctional

and control response

AquaCal AutoPilot ST-220 Fan Assembly (630-ST) calvertengineering The 1 inch slip connectionsThe AquaCal AutoPilot ST 220 fan assembly is designed for compatible chlorination system applications where internal cooling airflow is needed to support the electronics. A fan assembly is useful because it helps reduce heat buildup inside the unit, which can contribute to steadier operation and better long term component protection. This replacement is especially useful when the original fan has become noisy, weak, seized, or completely