Anatel A643a - Anatel A643a Maintenance 157 of 220
RPS - June 2007 - Edition 12
Anatel Operator Manual
13.3 Preparatory Maintenance Procedures
Certain maintenance procedures require the removal of either of the Anatel A643a’s covers to
access the instrument’s internal components. These procedures are common to both Analyzer
models in order to service the following components:
•UV Lamp
• Air Filters
• 15 Micron Filter
• Lithium Battery
• (Optional) Printer
The following tools are required:
• 7/16" Open-End Wrench
• 9/16" Open-End Wrench
• 5/64" Allen Wrench
To access the Analyzer’s internal components:
1) Close the upstream isolation valve to stop water flow to the instrument.
Unplug the Analyzer’s power cord and exercise extreme CAUTION as there are HIGH
VOLTAGES present inside the instrument’s Power Supply. It is also recommended that you
electrically ground yourself before opening the Analyzer to avoid potential electrostatic
damage to any of its internal components.
2) Turn the Anatel A643a Analyzer OFF and disconnect the power cord from its AC
source.
3) To disconnect the inlet tubing, loosen its compression fitting with a 9/16" wrench. The
outlet fitting is loosened using a 7/16" wrench.
4) If necessary, remove the I/O Connector Block by loosening the four screws that secure
it to the bottom of the instrument.
5) Loosen the four 5/64" hex bolts at each corner of the Analyzer cover to remove it.
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