Yes, the brine tank fills with water during a specific phase of the regeneration cycle known as the refill cycle. After the system completes the backwash, brine draw, and slow rinse phases, the control valve directs a metered stream of fresh water into the brine tank to dissolve salt and create the brine solution needed for the next regeneration. This refill phase typically adds just enough water to maintain a depth of 6 to 12 inches at the bottom of the tank beneath the salt stack. Verification: Inspect the brine well after a regeneration cycle completes to ensure water has refilled to its normal moderate depth.
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