Kromschroder Air pressure switch DL10K-3W 84444800

The Kromschroder DL10K-3W air pressure switch, SKU 84444800, is a mechanical pressure switch with a pressure range of 1–10 mbar. It features a glass fibre reinforced PBT plastic housing and a tempered LSR diaphragm system. The switch is designed for use with air or flue gas and includes a microswitch conforming to EN 61058-1. It has screw terminals for electrical connection and a safety class II to VDE 0106-1. The product is CE certified under ID CE-0085AP0466 and complies with EN 13611:2015+AC:2016 and EN 1854:2010.

When selecting a replacement pressure switch of this type, verify the pressure range, electrical connection type, and mounting configuration. Ensure the switch is suitable for the medium (air or flue gas) and that the electrical ratings match the control circuit. Check the physical dimensions and mounting bracket compatibility with the existing installation.

Common failure modes include diaphragm rupture or leakage, leading to loss of pressure sensing. This may cause the burner to fail to start or shut down unexpectedly. Electrical contact failure can result in intermittent operation or no signal. Inspect the diaphragm for damage and verify the switch operation with a manometer.