Central Heating Products

X400 Sludge Remover

How does Sentinel X400 work?

Older, or poorly maintained systems can suffer from a build up of corrosion debris and other contaminants that settle in the system as a black sludge causing circulation problems resulting in cold spots in radiators or even blockage. Sentinel X400 works by lifting and dispersing the sludge into the circulating water so that it can be removed by draining and then flushing the system. After cleaning the system in this way, it should be filled with fresh water and protected from further corrosion using Sentinel X100 inhibitor.

How long can I leave Sentinel X400 in the system?

Sentinel X400 needs to be circulated in the system for a minimum of two hours at operating temperature, but can be left circulating for up to 4 weeks in heavily fouled systems.

My system is over 20 years of age - can I still use Sentinel X400?

Yes, Sentinel X400 is designed to help bring older or poorly maintained systems back to health. Sludge in the system leads to heating inefficiency and can damage pumps and valves. The older the system, the more likely it is to suffer from this problem.

I'm putting a new boiler (or new pump) onto my old system... Should I clean and flush the system before start-up?

Sentinel X400 is ideal for use where a new system component such as a pump or boiler is being replaced. This is an opportune time for cleaning the system with Sentinel X400 to remove sludge that could otherwise damage new parts... and of course, after cleaning, addition of inhibitor will protect the system and help prevent such problems occurring in the future.

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