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rail-price-top · floating island · grid + stamp
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Common Questions & Troubleshooting Will this fix a 3-flash or 2-flash "Pressure Switch Open" error
Simplified Diagnostics: Standardized resistance values allow for quick field verification using a multimeter
Replacing the relay along with the associated start capacitor is recommended to ensure the entire starting circuit is functioning correctly
the internal bourdon tube may be damaged due to a high-pressure spike or freezing
Designed for industrial and commercial hydronic systems
McDonnell & Miller 345700 Float and Gaskets R-410A Common Questions & Troubleshooting WillThe McDonnell & Miller 345700 (Model SA91 60) is a high precision replacement float and gasket kit engineered for heavy duty boiler water level control. As a critical component for Series 93, 193, 94, and 194 combination pump controllers and low water cut offs, this stainless steel float assembly ensures accurate buoyancy and reliable switch activation in high pressure steam environments. The SA91 60 replaces legacy models including the SA92 60 and