UCTION MANUAL
Page 7
6 MAINTENANCE
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Keep the unit clean and dry when not in use. Ensure that all equipment is drained when not
in use.
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Carry out routine visual checks only.
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The orifice in the flow controller attached to the 2L DAF Jar is very small. If any foreign
bodies have been introduced into the saturator during filling they may become lodged in the
flow controller. To clean the orifice, remove the elbow from the flow controller on the 2L
DAF Jar and flush with clean water using a syringe. Ensure the foreign body has been
removed prior to reassembly.
7 SUPPLEMENTARY JAR TESTING PARAMETERS
The operating parameters tested during a DAF Jar Tester should be recorded for future
comparison and to optimise full scale plant operating conditions. Below are some suggested
parameters to supplement existing jar testing records
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Saturator pressure
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Volume of air saturated water transferred
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Recycle rate %
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Qualitative assessment of dispersion in jar
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Qualitative assessment of floated floc particles
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Subnatant turbidity
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Subnatant pH
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Subnatant colour
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Subnatant aluminium residual
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Oxidation of soluble metals
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Algae removal effectiveness
