CHEMICAL FLOW PROBLEMS
1. Using poor quality chemicals will cause deposits and may lead to complete line
blockages.
2. Air leaks at any point through clear line from jug to pulse pump or within
flow meter.
3. Clogged filter in chemical jug.
4. Defective chemical adjust valve.
5. Blocked jet or defective check ball assembly at the wand.
6. Defective pulse pump:
a. Torn diaphragm
b. Broken chemical disk
c. Dirty inlet or output check valve or defective valve, seat or spring
7. If chemical flow continues when wand trigger is not depressed:
a. Check for unloader not going into bypass mode.
b. Defective diaphragm.
The chemical system and pump are very closely inter-related. What may seem to be solely a
chemical problem may indeed be a pump problem. It may be necessary to troubleshoot under
“water pressure problems” and “pulsation in pumping system.”
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