Here in Ontario, pools are drained to just below the lowest jet and/or vac line (which is aprox 3'-0" down)
1. Pools which have a main drain connection to the skimmer:
-blowing out here is impossible as the water level will level itself out to the same level of the partially drained pool.
-I usually just add a good amount of foam rope and cape the line in the skimmer.
Is this sufficient to protect this line?
2.
Pools which have a main drain line directly connected to the pump:
-I use 5HP shop vac blower to attempt to blow out the line, but not strong enough to push air bubbles out of the MD.
-my understanding here is that, the water in the line will level itself out to the same level of the partially drained pool, leaving air between that level and the pump.
-is this safe enough to protect the line from freezing?
-should I place foam rope down the line at the pump connection?
-I feel adding anti-free will just mix with the water in the line below and dilute itself rendering itself useless for freeze protection
-any tips here is welcomed.
3. Heater plugs - after blowing the heater out, is it best to leave the plug hole open, or place the plug back? (placing the plug back may give the interpretation to a client that the heater was not winterized proper, so I always leave them open, but I believe the owners manuals recommend closing back up. Any thoughts on this?
1. Pools which have a main drain connection to the skimmer:
-blowing out here is impossible as the water level will level itself out to the same level of the partially drained pool.
-I usually just add a good amount of foam rope and cape the line in the skimmer.
Is this sufficient to protect this line?
2.
Pools which have a main drain line directly connected to the pump:
-I use 5HP shop vac blower to attempt to blow out the line, but not strong enough to push air bubbles out of the MD.
-my understanding here is that, the water in the line will level itself out to the same level of the partially drained pool, leaving air between that level and the pump.
-is this safe enough to protect the line from freezing?
-should I place foam rope down the line at the pump connection?
-I feel adding anti-free will just mix with the water in the line below and dilute itself rendering itself useless for freeze protection
-any tips here is welcomed.
3. Heater plugs - after blowing the heater out, is it best to leave the plug hole open, or place the plug back? (placing the plug back may give the interpretation to a client that the heater was not winterized proper, so I always leave them open, but I believe the owners manuals recommend closing back up. Any thoughts on this?