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Paratherm EC System Cleaner

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Large systems that are in continuous operation often rely on heat transfer fluids (HTFs) for processes like chemical processing, industrial drying, and the engineering of building materials and wood.

Unfortunately, sludge can accumulate in systems over time, limiting the flow of the HTF and compromising its ability to transfer heat. This is where the Paratherm EC continuous thermal cleaning fluid comes in, and it is especially useful because it cleans systems while they’re operating.

Paratherm EC is a REACH-compliant additive cleaner that has been designed to minimise downtime, and it does not require a system flush after use. During normal system operation, it works to dissolve and suspend sludge, thus restoring normal system operation while the machine is actually in use. It is compatible with all HTFs based on mineral oil, and it is suitable for applications with operating temperatures between 11°C and 288°C.

Before use, Paratherm recommends performing analysis on the existing fluid to ascertain the level of fouling, because this will influence the treatment rate for the additive, which can be between 3% and 12% of the volume in the system. After performing the necessary steps to add the product to the system and putting the machine back into operation, Paratherm EC’s unique formula gets to work on the sludge deposits that can coat the surfaces in the system, breaking them up and suspending them and restoring optimal heat-transfer performance. Note that this process relies on the HTF–additive solution actually coming into contact with the deposits. In cases where there is no such contact, you may need to consider cleaning the affected pipes mechanically or possibly even replacing them to get system performance back to normal.

The system should be run as normal with the additive mix for at least three weeks, but Paratherm claim it can be run for as long as a year. Once you’re happy with the cleaning cycle, the HTF–additive mixture should be drained from the system and disposed of in the usual safe manner. As there’s no flushing stage required, the system can then be immediately filled with a fresh Paratherm HTF or a compatible fluid from another brand before going back into normal operation. Paratherm recommends sending a sample of the new fluid to the supplier for analysis after a week of operation.

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