MIL-HDBK-1164
Table 42
Troubleshooting Checklist for Solution-Feed, Vacuum-Operated Gas Chlorinators
Symptom
Possible Cause
pressure for existing back pressure conditions.
Drain valve leaking air.
Insufficient booster pump discharge pressure.
Table 42 (Continued)
Symptom
Possible Cause
Gas flow rate cannot be controlled.
Condensed gas vapor (liquid chlorine) in
chlorinator.
Dirty vacuum regulator valve.
Air leakage in regulator stack.
Insufficient ejector vacuum.
Maximum gas flow rate produces
Chlorinator capacity too low.
too low a residual in the treated
Air leakage caused by dirty sealing surfaces.
process liquid.
Minimum gas flow rate produces too
Chlorinator capacity range too high.
high a residual in the treated
process liquid.
Flowmeter continues to indicate flow Condensed gas vapors (liquid chemicals) in
when ejector water supply valve is
chlorinator.
closed.
Vacuum regulator valve stuck in the open
position.
Solution line draining due to a back pressure
of zero or less.
Ball stuck in flowmeter.
Water leaks from ejector into
Diaphragm backflow check valve not seating
gas line.
properly.
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