1. Switch off conductivity indicator
2. Close all valves and pinchcocks including raw water supply.
3. Raise regenerant bag, lock in position and the open the lid.
4. Preparation of Acid solution
Pour 6 litres of commercial grade Hydrochloric acid in anticorrosive container and 15 litres of D.M. water to dilute.
5. Acid Injection
a. With all valves closed, disconnect raw water inlet tube and lead it to a drain. Pour 7 litres of the prepared acid solution into regenrant bag. Open valve B and pinchcock P2.
b. Adjust flow of acid to drain by means of pinchcock P2 such that the flow is approximately 1 litre per minute. Repeat a) and b) till all the prepared solution is used.
6. Acid Downflow Rinse
Pour 20 litres of D.M. Water in the regenerant bag in three lots.
7. Preparation of Soda Solution
Dissolve 1.2 Kgs of caustic soda in 21 litres of D.M. water. After caustic soda is completely dissolved pour in the regenerant bag in three lots.
8. Soda Injection
a. Open pinchcock P3 and valve “A” fully. Open and adjust valve D such that regenerant bag emloties in 10 minutes, then close valve A and D.
b. Repeat the above operation till all the prepared solution of soda has been used up in lots taking precautions against air locks.
9. Soda Rinse
a. Take 15 litres of D.M. Water to be poured into the regenerant bag in two lots.
b. Open valve A and D to get flow one litre per minute, close valve when regenerant bag is almost empty.
c. Repeat the above operation till all the D.M. Water is used up.
10. Final Rinse
Open pinch cocks P1, P2 and P3, open valve C and raw water supply valve, regenerate these two valves to give flow of 3.5 litres per minute. Switch on the conductivity meter after some time and when conductivity reaches an acceptable level collect the water for Service.
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