Hach BODTrak, Instrument Manual, Page: 15 / 63

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Customer Service Department in Loveland, Colorado. Do not
return the instrument without prior authorization. In the United
States, call 1-800-227-4224. Outside the United States, contact
your nearest Hach dealer.
1.3 Applying Power
A UL/CSA approved 115 Vac power cord with a NEMA 5-15P
style plug and a 230 Vac Harmonized power cord with a
Continental European plug are supplied with the BODTrak
Instrument. The plug supplies AC power to the Power Supply
IEC Universal Connector (see Figure 1). The Power Supply
switch, located on the bottom of the Power Supply, is set at 115V
when shipped. If 230 power is required, move the switch to the
230V position.
1.4 The BOD Test
Biochemical Oxygen Demand (BOD) is a test conducted at 20 °C
(68 °F) within a controlled environment. The test duration can be
five days, seven days, or up to 90 days, depending upon the
analysis or protocol. The test measures the amount of oxygen
consumed by bacteria oxidizing organic matter in a water sample.
The test is used to measure waste loadings at wastewater
treatment plants and to evaluate the efficiency of wastewater
treatment.
Figure 1 BODTrak Power Supply and Side Panel Controls
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