Environmental Engineering Reference
In-Depth Information
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symptom 7.
The chlorinator system is unable to maintain a suf-
ficient water bath temperature to keep the external pressure-reduc-
ing valve open.
Cause:
Heating element malfunction
Corrective action:
Remove and replace the heating element.
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symptom 8.
The maximum feed rate cannot be obtained from the
chlorinator.
Cause:
Inadequate chlorine gas pressure
Corrective action:
Increase pressure; replace empty or low
cylinders.
Cause:
Water pump injector clogged with deposits
Corrective action:
Clean injector parts using muriatic acid; rinse
parts with freshwater and place back in service.
Cause:
Leak in vacuum-relief valve
Corrective action:
Disassemble the vacuum-relief valve and
replace all springs.
Cause:
Vacuum leak in joints, gaskets, tubing, etc. in chlorinator
system
Corrective action:
Repair all vacuum leaks by tightening joints,
replacing gaskets, or replacing tubing or compression nuts.
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symptom 9.
An adequate chlorine feed rate cannot be maintained.
Cause:
Malfunction or deterioration of chlorine water supply
pump
Corrective action:
Overhaul the pump (if a turbine pump is
used, try closing the valve to maintain the proper discharge
pressure).
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The chlorine residual is too high in plant effluent to
meet requirements.
symptom 10.
Cause:
Chlorine residual too high
Corrective action:
Install dechlorination facilities.
•
symptom 11.
The chlorine residual produced in the effluent varies
widely.
Cause:
Inadequate chlorine flow proportioning meter capacity to
meet plant flow rates
Corrective action:
Replace with higher capacity chlorinator
meter.
Cause:
Malfunctioning controls
Corrective action:
Call manufacturer's technical representative.
Cause:
Solids settled in chlorine contact chamber
Corrective action:
Clean the chlorine contact tank.
