The GRACO 563339 is a solid-state AC timer assembly designed for use with all tank types in GRACO equipment. It is constructed with electronic components for reliable timing control and is intended to automate and regulate the operation of pneumatic pumps and tank systems. Key Features: Solid State AC Timer Electronic (solid-state) All tanks; for use with Modu-Flo® Pneumatic Pumps Reliable solid-state electronics Automated timing for pump/tank operation Suitable for 50/60 Hz AC input Maximum on time: 13 minutes Applications:Automates and controls the timing of pneumatic pump and tank operations in industrial lubrication, maintenance, and fluid handling systems. Installation Notes: Ensures compatibility, reliability, and optimal performance with GRACO equipment. Verify electrical compatibility (110/220 VAC, 50/60 Hz) Follow GRACO installation guidelines for Modu-Flo® systems Ensure proper wiring and grounding for safety and functionality Regularly inspect for electrical integrity Keep connections clean and secure Refer to GRACO documentation for troubleshooting and replacement intervals