Kromschroder Gas pressure switch DG6UG-6K2 84447263

The Kromschroder DG6UG-6K2 (SKU 84447263) is a gas pressure switch designed to regulate positive, negative, or differential air and flue gas pressures. It has an adjusting range of 0.4–6 mbar and switches with rising pressure. The switch operates at a supply voltage of 24 V and features a 4-pin plug with socket for electrical connection, including a green/red pilot lamp for 24 V AC/DC. It weighs 350 g and has a designed lifetime of 10 years. The product complies with EN 13611:2015+AC:2016 and EN 1854:2010 standards and holds approval CE-0085AP0466.

When selecting a pressure switch of this type, ensure the adjusting range and pressure range match the application requirements. The electrical connection must be compatible with the existing wiring, typically via a plug or terminals. Verify the supply voltage and pilot lamp voltage (if applicable) match the system. Mounting orientation and process connection size should be checked against the original part. Always compare the switch's switching function (e.g., rising or falling pressure) with the system's control logic.

Common failure modes for pressure switches include contact wear, diaphragm rupture, or loss of calibration. Symptoms may include the burner failing to start, intermittent shutdowns, or the system not responding to pressure changes. Check for visible damage, test the switch with a manometer, and verify electrical continuity across contacts. If the switch is part of a safety chain, replace it immediately upon any malfunction.