NIRE-170-1-6
8
Immediately stop the chemical cleaning operation if any of the
associated cleaning equipment appears to be malfunctioning.
Do not inject any chemical into the membrane directly from the
chemical pump discharge. Excessive membrane element internal
pressure will damage the element. Be sure to inject chemicals at a
pressure less than 10 kPa (100 mbar).
Before starting injecting chemical to elements, confirm that the
membrane tank liquid level is more than 500 mm above the top of
the module.
Store chemicals in a dark, cold place free from direct sunlight.
Use chemical storage tanks constructed of chemically compatible
materials to prevent corrosion.
Never mix sodium hypochlorite with heavy metals or acids. The
resulting chemical reaction will generate toxic chlorine gas.
To avoid scattering of chemical solution turn off the air scour during a
chemical cleaning.
CAUTION
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WARNING
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WARNING
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WARNING
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WARNING
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WARNING
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WARNING
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