Kromschroder Air pressure switch DL10E-1 84444270

The Kromschroder DL10E-1 is a mechanical diaphragm pressure switch designed for air or flue gas pressure monitoring in boilers and industrial equipment. It has an adjusting range of 1–10 mbar and features a tempered LSR diaphragm system. The housing is made of glass fibre reinforced PBT plastic with low gas release, and the electrical connection uses AMP plugs. The microswitch complies with EN 61058-1, and the device meets safety class II and standards EN 13611 and EN 1854. It weighs 150 g and has a designed lifetime of 10 years.

When selecting a replacement pressure switch of this type, verify the required pressure range, electrical ratings, and connection type. Ensure the medium (air or flue gas) is compatible and that the switch's safety class and standards meet the application's requirements. Mounting involves connecting the pressure ports and securing the cover screw to the specified torque of 65 Ncm. The electrical connection via AMP plugs must match the existing wiring.

Common failure modes include diaphragm rupture or leakage, leading to loss of pressure sensing or false switching. This may cause the burner to shut down or fail to start. Check for visible damage to the diaphragm, loose electrical connections, or incorrect pressure settings. If the switch fails to operate within its set range, it may need replacement.