Table 3-2. Troubleshooting - Continued
TEST OR INSPECTION
WATER PURIFICATION UNIT-Cont
Limestone slurry feeder ejectors clogged. Remove the pipe plugs and insert a fine wire through each
Step 5. Slip clutch improperly adjusted. Adjust slip clutch (refer to para 3-60).
7. CHEMICAL SOLUTION FEEDER PUMPS INSUFFICIENT OR NO SOLUTION.
Solution supply exhausted. Recharge the solution tanks.
Ferric chloride solution.
Empty the contents of three plastic bags (1 pound each) of ferric chloride in a
Add 1 gallon of water and stir the contents with a wooden paddle or stick until the
ferric chloride is completely dissolved.
Fill the pail to the 3 gallon mark with raw water and pour it into the right hand or
ferric chloride solution tank (5, fig. 2-7).
Calcium hypochlorite solution.
Measure 3/4 pound of calcium hypochlorite into the calibrated plastic measuring
cup provided especially for this purpose. Pour the contents of the cup into another
Fill the pail to the 3 gallon mark with raw water. Stir the water with a wooden
paddle or stick until the hypochlorite is completely dissolved.
Pour the contents of the pail in the left-hand tank or calcium hypochlorite solution
tank (6, fig. 2-7).