ANSUL 423541 Checkfire Release Circuit Tester

ANSUL 423541 Checkfire Release Circuit Tester, also cataloged as WL38-1, is a dedicated diagnostic tool for the CheckFire release circuit in ANSUL fire protection systems. Technicians use this tester during installation, commissioning, maintenance, and periodic inspections to verify the integrity of the release circuit wiring and the basic electrical function that controls the system's release sequence. By providing a means to confirm that the release circuit path is correctly connected and capable of signaling the control unit, the tester supports safe, code-compliant servicing of the CheckFire components. The part number 423541 uniquely identifies this tool in ANSUL’s catalog, with WL38-1 listed as an alternate designation. This tool is intended for professional use by fire protection technicians, installers, and maintenance personnel who work with ANSUL CheckFire systems and require a reliable way to validate release-circuit readiness before functional testing.