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12.1 Check procedure with test arm set to 20
Position 19.5
Turn the drum in the direction of the arrow until the LED
display reads 19.5.
Then continue to rotate the drum slowly until the
measurement arm moves forward. Check to ensure the
display reads between 19.5 and 20.5.
Position 20.5
Turn the drum in the direction of the arrow until the LED
display reads 20.5.
Then continue to rotate the drum slowly until the
measurement arm moves backwards. Check to ensure the
display reads between 19.5 and 20.5.
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12. Routine Instrument Maintenance
Continued
