Armstrong Fluid Technology 880202-677K Seal Kit 318973-401 or the compressor failing to

or the compressor failing to engage despite a call for cooling are common indicators that the pressure switch requires testing

the 7-BM is physically compatible but adds the required manual reset safety protocol often mandated by local boiler codes for larger steam plants

ensuring gas pressure remains within required safety parameters

Can I test the functionality of this switch with a multimeter

Armstrong Fluid Technology 880202-677K Seal Kit 318973-401 or the compressor failing toThe Armstrong Fluid Technology 880202 677K Seal Kit is a precision engineered mechanical seal replacement designed specifically for the E2 Series circulator pumps. This comprehensive kit ensures a leak free environment by utilizing high grade EPDM gaskets and a durable rotating seal assembly. As an essential HVAC pump repair kit, it addresses common points of failure in hydronic heating and cooling systems, restoring hydraulic integrity and preventing