Overland04
Wisher of the redo button
I have had a tds creep problem from day one with my RO/DI system. I have found that the DI resin was in need of replacement almost every month. I only burned around a gallon a day so around every 30 gallons a noticed a decline in DI quality.
So with ideas from multiple reefers I came up with this solution.
Some of the parts were old and I have made it a little nicer since these picture but if there are any questions feel free to ask!
When explained it makes sense. (at least in my eyes)
The concept is:
Solenoid #1 is on the input supply line before the RO/DI unit. Solenoid #2 is placed in between the output of the RO and the input of the DI canister on a "t". solenoid #3 is at the output of the DI canister.
At 7pm each night my Reef Keeper elite turns on solenoid #1. The water flows from my water supply through solenoid #1 (now open) into my RO unit. The power to solenoid #1 is split to a SPDT Relay. The relay controls solenoid #2 and #3 along with the delay box. the Normally closed side of the relay goes to solenoid #2 and the open side goes to solenoid #3
When the power signal is sent from the Reef Keeper to open solenoid #1 it also powers the relay and the delay timer. The timer is set for 6 minute delay.
The delay timer controls the actual switching of the coil in the relay. After the 6 minutes is up it sends a signal to to the relay to switch from solenoid #2 to #3.
What actually happens is the water goes into the RO unit and the output goes directly down the drain for 6 minutes. After the 6 minutes the relay closes Solenoid #2 and opens #3 allowing flow to go through the DI unit. When solenoid #2 is open an #3 is closed the water is forced to go into my waste tube.
A simple yet complex solution.
This is a quick sketch of the hardware and schematic, again any questions or clarity please feel free to ask. Its been up and running for about 4 months without a problem and I love how it does it all by itself.
So with ideas from multiple reefers I came up with this solution.
Some of the parts were old and I have made it a little nicer since these picture but if there are any questions feel free to ask!
When explained it makes sense. (at least in my eyes)
The concept is:
Solenoid #1 is on the input supply line before the RO/DI unit. Solenoid #2 is placed in between the output of the RO and the input of the DI canister on a "t". solenoid #3 is at the output of the DI canister.
At 7pm each night my Reef Keeper elite turns on solenoid #1. The water flows from my water supply through solenoid #1 (now open) into my RO unit. The power to solenoid #1 is split to a SPDT Relay. The relay controls solenoid #2 and #3 along with the delay box. the Normally closed side of the relay goes to solenoid #2 and the open side goes to solenoid #3
When the power signal is sent from the Reef Keeper to open solenoid #1 it also powers the relay and the delay timer. The timer is set for 6 minute delay.
The delay timer controls the actual switching of the coil in the relay. After the 6 minutes is up it sends a signal to to the relay to switch from solenoid #2 to #3.
What actually happens is the water goes into the RO unit and the output goes directly down the drain for 6 minutes. After the 6 minutes the relay closes Solenoid #2 and opens #3 allowing flow to go through the DI unit. When solenoid #2 is open an #3 is closed the water is forced to go into my waste tube.
A simple yet complex solution.
This is a quick sketch of the hardware and schematic, again any questions or clarity please feel free to ask. Its been up and running for about 4 months without a problem and I love how it does it all by itself.
