Whether you are performing a retro-fit or a necessary repair

first verify static pressure and temperature rise across the heat exchanger before replacing the switch

a fusible link rollout operates as a one-time safety device that must be replaced once the thermal link has reached its melting point

measure resistance across the coil

Functional Devices RIB RIBX24SBF Sensor Relay Els PW 17895 Whether you are performing aThe Functional Devices RIBX24SBF is a versatile enclosed current sensing relay designed for reliable load monitoring and control in commercial HVACR environments. This unit features a split core current sensor capable of detecting 0. 25 to 20 Amp ranges, paired with an SPDT relay rated for 10 Amps. The RIBX24SBF is engineered with a built in Hand Off Auto (HOA) override switch, allowing technicians to manually bypass the sensor for system testing or