Smith and Lochinvar appliances

a specific pressure switch conversion may also be required

replacing a damaged plate will restore quiet operation

the assembly likely has carbon buildup or a compromised orifice and should be replaced

and reduced heat transfer across the coil

Trane BRK2978 Plate R-407A Smith and Lochinvar appliancesThe Trane BRK2978 is a heavy duty, top mount HVAC motor mounting plate engineered for precise alignment and vibration damping in industrial and residential air handlers. Measuring exactly 11. 7" x 7. 8", this OEM Trane replacement part is fabricated from high gauge galvanized steel with a corrosion resistant zinc finish, ensuring a stable foundation for condenser or blower motors. As a standard furnace motor bracket in many TSC and YHC series package