Siemens Building Technology 186-0013 Hygrostat 30067439-890 this model serves as a

this model serves as a direct replacement for the D-3073 series and a functional replacement for the older D-251 pneumatic actuators

a burning electrical smell (overheated windings)

Hot Surface Ignition (HSI)

The motor is electrically reversible

this updated part number ensures full compatibility and precise calibration for Lochinvar HVAC replacement parts

Siemens Building Technology 186-0013 Hygrostat 30067439-890 this model serves as aAs a seasoned technician, you know that maintaining precise humidity levels in critical environments like hospitals, labs, and data centers requires a pneumatic room hygrostat that doesn't drift. The Siemens 186 0013 is a direct acting (DA) instrument designed for high sensitivity relative humidity control within a standard range of 20% to 90% RH. This unit is the official replacement for 2230 018, ensuring full compatibility with existing field