MODEL 9-4
Technical Manual
Section 5
Ludlum Measurements, Inc.
Page 11
June 2018
Cleaning and Maintenance
Precautions
Instrument maintenance consists of keeping the instrument clean and
periodically checking the batteries, desiccants, and calibration. The Model 9-4
(excluding chamber window) may be cleaned externally with a damp cloth,
using only water as the wetting agent. Do not immerse the instrument in any
liquid. Observe the following precautions when cleaning or performing
maintenance on the instrument:
1.
Turn the instrument
OFF
and remove the batteries.
2.
Allow the instrument to sit for one minute before cleaning the
exterior or accessing any internal components for maintenance.
Accessing internal components for maintenance
increases the risk of electrical shock if these steps are
not followed.
Maintenance
RECALIBRATION
Recalibration should be accomplished after maintenance or adjustments have
been performed on the instrument. Recalibration is not normally required
following instrument cleaning, desiccant servicing, or battery replacement.
Ludlum Measurements, Inc. recommends recalibration at intervals
no greater than one year. Check the appropriate regulations to
determine required recalibration intervals.
Section
5
