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Heat Exchanger Tips

1) What does a heat exchanger do?

The heat exchanger is the heart of the closed cooling system. It uses raw or ocean water to cool your antifreeze or coolant. The heat exchanger acts like a radiator does in an automobile, however rather than air, raw water is used for cooling the circulating water. As the raw water flows through the plates inside the heat exchanger, it will absorb and exchange the heat and will exit the heat exchanger through the exhaust overboard.

2) Why do heat exchangers need to be cleaned?

Over time the heat exchanger plates can become fouled with marine organisms, scale, seaweed, and sometimes sand. This will gradually cause your engine(s) to run hotter. Have you ever noticed one of your engines running hotter than the other?

If a plate heat exchanger is not serviced periodically, it can also develop leaks and become hard to disassemble. We all know how easy it is to snap off a bolt due to corrosion and salt. It is an easy task if done on schedule but can become much more difficult when bolts become corroded. When the heat exchanger is maintained it will assure a cool running engine and it will definitely extend engine life.

3) Replacing the gaskets

When a heat exchanger is disassembled, it is necessary to replace the gaskets. It is a fairly easy process, as most gaskets just clip or glue into place.
The gaskets in a heat exchanger can become brittle, dried out, or oil fouled over time.  Attempting to reuse the old gaskets is usually not a good idea, especially since we have made gaskets much more affordable than your local dealer.

Plate heat exchangers are usually disassembled and cleaned every 2 to 3 years. If a heat exchanger is reassembled using old gaskets and develops a leak, the entire plate heat exchanger assembly has to be removed again and meticulously cleaned.

We offer fast shipping and great pricing on all of our gaskets and seals. Email us at parts@heatexchangerseals.com
or call 772-777-0901 for pricing.

4) How do you clean a plate heat exchanger?

In most cases pressure cleaning/power washing will be sufficient to clean the plates. Chemical baths are sometimes necessary to remove heavy scale.

Older units should be dye tested and repaired as necessary. We can service your units if you ship them to us.



Contact Us:

Phone: 772-777-0901

Outside US call  00+1-772-777-0901

Email: Parts@heatexchangerseals.com

Hours: 8-5 pm EST

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