Spacerunner
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- 68
The point is it's going to be the very small bits of trapped water that are most at risk of freezing. To this end after thoroughly draining the system I also remove the pump. I take it indoors give it a good shake to dislodge any small pockets of water and then stand the pump close to a heat source (radiator etc) for a couple of days to make sure it's really dry inside. It's then reinstalled in the van ready for the next outing.