Hach BioTector B3500s, User Manual

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Page 151
Section 10 Service and Maintenance
10.1 Weekly Maintenance
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Check the air supply pressure:
A) An existing instrument air supply line
B) BioTector Compressor
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Check and confirm that the air pressure is 1.5 bar on the filter pack pressure regulator.
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Check the Sulfuric Acid level in the acid reagent container. Check the Acid Pump and confirm that
there are no leaks.
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Check the Sodium Hydroxide (base) level in the base reagent container.
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If installed check the sampling system:
Option 1: Confirm that the BioTector Vacuum Sampler or BioTector Venturi Sampler is
operating
Option 2: Confirm that the Sample Catch-Pot has sufficient sample flow, which guarantees a
fresh sample for each analysis cycle.
Option 3: Confirm that the Sample Pipe has sufficient sample flow, which guarantees a fresh
sample for each analysis cycle.
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Check the Sample Pump and confirm that there are no leaks. Observe Sample Pump operation and
sample delivery from the sample point and confirm that there are no blockages inside sample lines.
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Check all valves inside the BioTector and confirm that there are no leaks.
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Check the filter mats in the Fan and Vent housings and confirm that they are not blocked.
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Check the Sample Out and Exhaust lines outside the BioTector and confirm that there are no
damages and blockages.