Jan 6, 2007, 6:40 PM
Post #11 of 13
The tank on the roof is a tinaco. The cistern in the ground is the aljibe.
In areas where the water supply is not reliable or where it is rationed and only supplied on certain days of the week, or where the water pressure is low, the house usually has both an aljibe and a tinaco. Water flows into the aljibe and then is pumped from the aljibe up to the tinaco since the water pressure is probably not sufficient to force the water up to that third floor tinaco. On other systems where the water supply is constant but the pressure is low you may not have the aljibe just the pump.
The expensive part of the system is where the float in the tinaco drops and switches on the electricity to the pump or rises and switches the electricity off. Those points of turn on and turn off can be adjusted. If they are not adjusted correctly you can have the pump motor starting and turning off almost constantly. And you are right the heaviest current draw is at start up. So you you should adjust the float so that it only starts the pump when the tinaco is nearly empty and turns off the motor when it is full. A 300 liter tinaco should run a household of twp for about a week before it needs refilling.
Those tinacos and aljibes need cleaning at least once a year and if the water supply is not chlorinated, you should add chlorine to the water as well.