Danfoss Oil pump BFP52E R5 071N2204

The Danfoss BFP52E R5 oil pump (SKU 071N2204) is designed for small and medium-sized two-stage household burners with fuel consumption up to 42 l/h. It operates within a viscosity range of 1.8-12.0 cst (mm2/s) and a pressure range of 7000-15000 mbar. The pump features a built-in filter with a cross-section of 11/200 cm2/microns and a shaft made of EN225 material. It supports shaft rotation speeds from 1400 to 3450 min and has a maximum starting torque of 0.12 nm. The pump is rated IP40 and can operate in ambient/transport temperatures from -20 to 70 °C and fuel temperatures from 0 to 70 °C.

When selecting a replacement oil pump of this type, ensure the shaft standard (e.g., EN225) matches the burner's coupling, and verify the shaft rotation speed range (typically 1400-3450 min) is compatible with the motor. Check the inlet pressure maximum (2000 mbar) and the pressure range (7000-15000 mbar) to match the system requirements. Also confirm the pump's mounting dimensions and the direction of rotation (clockwise or counterclockwise) as per the burner's design. For installation, follow the manufacturer's guidelines for one-pipe or two-pipe configurations, ensuring proper sealing and alignment.

Common failures of oil pumps include loss of pressure due to worn gears or a clogged filter, leading to burner ignition issues or unstable flame. A seized shaft or excessive starting torque can cause the motor to overheat or trip. Leaks may occur at the shaft seal or gaskets, resulting in fuel odor or visible drips. If the pump fails to maintain pressure, check the filter for debris, inspect the shaft for wear, and verify the pressure regulator settings.