Culligan Premier Series, Installation, Operation And Service Instructions

Page: 57 / 102

Regeneration Flow Diagrams 53
Cat. No. 01024000
Acid Draw
Backwash Inlet (C1), Backwash Outlet (C4) valves and the Cation valve (C2) are now closed. Flow through the pressure
regulator directs water to the top of the tank. The acid chemical pump is activated and acid from the chemical container is
fed at connection CP. The mixture of acid and water (normally 6 percent) is directed to the top of the resin bed. The Acid
flows down through the bed removing the Cations collected during Service Cycle. The excess acid and the waste cations
exit the Cation Column and flow through to Drain (C3). This drain water is acidic (low pH) and must be neutralized prior to
sending it to the city sewage system
C1
C4 A5
C2 A3
A1
A2
A4
C3
A6 C5
CP AP
PR
2
ACID
PUMP
ON
ACID
SUPPLY
TO
NEUTRALIZATION
TANK
HYDROCHLORIC
ACID
Figure 17. Acid draw cycle.
The percentage of the acid can be adjusted with use of the adjustment knobs on the air regulating valve (see Figure 7 on
page 16 ). Samples of the diluted acid are taken at the test cock (2) near valve C3 20 minutes into the draw from the
bottom of the tank. The specific gravity of the solution is used to determine the percentage of acid. Refer to the specific
gravity chart contained in the "Appendix B Regeneration Specifications" on page 77 .