B&K Precision 1823A - Manual - Manual (Page 19)

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4. MAINTENANCE
CAUTION
IT IS ESSENTIAL FOR SAFETY TO PROPERLY MAINTAIN AND SERVICE
THIS INSTRUMENT
WARNING
VOLTAGES WITHIN THIS INSTRUMENT ARE SUFFICIENTLY HIGH TO
ENDANGER LIFE. COVERS MUST NOT BE REMOVED EXCEPT BY
PERSONS QUALIFIED AND AUTHORIZED TO DO SO AND THESE
PERSONS SHOULD ALWAYS TAKE EXTREME CARE ONCE THE COVERS
HAVE BEEN REMOVED.
4-1. Fuse Replacement
 Disconnect and remove all connections from any live power source.
 Unscrew fuse holder by screw driver.
 Locate the defective fuse and remove it by gently pulling-out.
 Install a new fuse of the SAME SIZE AND RATING.
 Screwing fuse holder.
CAUTION
MAKE SURE THAT THE RATED AND SPECIFIED FUSES ARE USED FOR
REPLACEMENT.
4-2. Adjustment And Calibration
It is recommendable to regularly adjust and calibrate this instrument. Qualified
and authorized personnel only should execute performance and procedures
4-3. Cleaning and decontamination
The instrument can be cleaned with a soft clean cloth to remove any oil, grease
or grime. Never use liquid solvents or detergents. If the instrument gets wet for
any reason, dry the instrument using low-pressure clean air at less than 25 PSI.
Use care and caution around the window cover areas where water or air could
enter into the instrument while drying.