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1. First establish whether instructions exist as to
which side should be stopped first.
2. Slowly close the valve controlling the flow-rate of
the pump you are about to stop.
3. When the valve is closed, stop the pump.
4. Repeat the procedure for the other side.
5. If for any reason the heat exchanger is shut down
for a long periods (more than a number of days), it
should be drained, and depending on the media
processed, it is recommendable to flush and dry it.
