Guildline Autosal 8400B - 11. SERVICING AND CALIBRATION; 11.1. GENERAL; 11.2. MAINTENANCE SCHEDULE; 11.3. SERVICE NOTES

Section 11
TM8400B-L-00
1 November 2004
11-1
11. SERVICING AND CALIBRATION
11.1. GENERAL
This section supplements Section 10. The frequent user checks and maintenance procedures are
listed in that section. This section contains further maintenance and servicing details, and a
complete calibration procedure should tests indicate that recalibration is necessary.
11.2. MAINTENANCE SCHEDULE
Table 11.1 contains a recommended maintenance schedule. This schedule is provided as a guide
only, and individual users will find that the need for various checks will change depending on
use and location of the instrument.
Table 11.2 shows how often the various operational checks as outlined in the operating manual
should be made.
11.3. SERVICE NOTES
The following procedures may be referred to in the troubleshooting section, which may be
necessary for servicing.
11.3.1. CLEANING FLUSHING MANIFOLD/TUBES
If the small air flushing tubes on the conductivity cell become blocked with salt deposit,
remove the cell as outlined in Section 10.8 including disconnecting the short large
diameter tube attached to the cell support arm from the long smaller diameter tubing
from the air pump. Force warm soapy water down the large tube into the small flushing
tubes to clean them. Then rinse the tubing and blow dry. Reassemble the cell as in
Section 10.8.