We have a guy from The Pool Clinic knocking at our door at around 8 am this morning to replace the pump for the rain water tank. Very impressed, I thought everyone was on holiday??
The company looks after all the services for the Davey products, and this guy carried this little machine with him.
I took a closer picture of it and he explained that the water will be sucked into the pump through the bottom part (marked with red arrows), and then pumped through the hole marked with blue arrow, which would somehow connected to a pipe somewhere. The yellow coloured thing floats on the water surface for it to detect the water level. There's also a small sign behind the yellow thing which says "Made in Italy", wonder if that's for the whole machine or just that part.
If you are interested in getting more information about the pump, I did a search on their web site and further information about this "Submersible sump pumps with twin impeller" is available here.
We just released most of the water a few days ago while it was raining. It took more than an hour to release all 3000+ L of water and it's quite boring watching it. I thought we have to go through the long, boring water release process again. But he just put his hand into the tank, unscrew a pipe and pull out the whole thing in about 30 seconds time. Wow! So the pump actually stays inside the tank!
As shown below, the one on the left is the replacement, the one at the right with a long white pipe connected is the malfunctioned one.
The black machine in the control box at the background of photo above (shown below), which we always thought was the pump, is actually just the "RainBank water controller". It's interesting to learn all these new things everyday!
When viewed from above the tank, the pipe highlighted in red below, is where the long pipe connects to.
He then swap the pipe over and slowly drop the pump into the tank. It actually takes more time to run the extremely long power cable around the pipes than to replace the pump! When it's all done, I could see the pump with the yellow thing floating on the water surface inside the huge tank.
Have a quick look inside the tank and as below, can see some supporting structure inside the tank.
We did a few tests to prove it's working ok, and I asked him why the mains water meter was running when I turned on the garden hose (which connects to the rain water tank)? He said the system is designed to use the water pressure from the mains to start up the system, once it's started, it will still work even if you turn off the mains. Did a few more tests and it worked exactly as he described, very interesting!
One more problem solved, yeah!