Why a Separator Extends the Life of Your Boiler and Pump
Rust and micro-bubbles of air silently destroy your boiler and pumps from the inside. We break down the physics of the process and the maintenance intervals for the Termojet magnetic sludge separator.
The two most common causes of premature equipment failure are ferromagnetic sludge (magnetite, rust particles) and dissolved gases in the heat-transfer fluid. Both are eliminated by a separator.
How a magnetic sludge separator works
Inside the housing, the flow velocity drops sharply — heavy particles settle into the lower sludge chamber, while a powerful magnet captures ferromagnetic inclusions. At the same time, a cartridge collects micro-bubbles of air and vents them through an automatic air vent at the top. In the Termojet range, TJT6G/TJT7G handle dirt, TJV6G handles air, and the combined TJVT6G does both.
What this means in practice
- Reduced abrasive wear on pump impellers.
- Elimination of cavitation and the characteristic «gurgling» noise.
- Lower pump energy consumption.
- Slower corrosion of the boiler heat exchanger.
Particularly important for heat pumps
Systems with a heat pump have plate heat exchangers that are sensitive to contamination. The TJ7575 magnetic separator protects them and keeps the pump running efficiently for years.
Maintenance
Draining sludge from the lower chamber twice per season — at the start and midpoint of the heating period — is recommended. The procedure takes a minute and does not require shutting down the system. For boiler rooms above 50 kW, the separator pays for itself within one or two seasons.
