Question 3015 of 223 · California Water Treatment Operator Exam
A diaphragm metering pump is feeding too little chemical. A likely cause is
Exactly one answer is correct.
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Correct answer to question 3015
- A: air in the pump head or a clogged check valve
Explanation
Air binding and fouled check valves reduce the displaced volume. Stroke length and speed adjustments change the output set point.
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