Swimming Pool Deep Freeze: How To Recover From Freezing Weather and a Frozen Pool & Frozen Equipment
Basically, if you had set your pool to run 24/7 and the power did not go off you are fine - even if the pool surface was frozen. But if the power goes off for any length of time it could spell total disaster for your pool equipment and plumbing.
If you have a deep freeze and the power goes off here are some of the side effects:
Damage to underground plumbing
Damage to equipment O-rings
Other equipment damage
Equipment unable to turn back on
Equipment turning back on when power is restored and becoming damaged
Before turning the pool back on check to make sure the return line is not obstructed by ice or that any check valves in front of the pump and after the filter are not frozen in the closed position.
This can cause the filter tank to explode as back pressure builds inside of the filter.
If the water got below the skimmer line - the actual plastic pool skimmer may have been cracked - as the plastic contracted and expands. Make sure the water does not get below the pool skimmer in freezing weather.
The pump may trying to turn on with frozen pipes and if it is starved for water it can burn out. So if you have a power failure turning off the breakers to the pool equipment would be wise.
Trying to crack the ice on the surface can cause more damage than good. Let it thaw naturally.
If the filter has been frozen the fiberglass may be compromised. Replacing your filter or pump that has been frozen may be a safe option for you - to prevent future issues.
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