Teledyne 6712FR and, Installation And Operation Manual, Page: 166 / 244

6712FR Refrigerated Sampler
Section 8 Maintenance
8-14
Figure 8-4 Main Circuit Board Connections
8.8 Replacing the Internal
Battery
A lithium battery housed inside the controller maintains power
to the sampler’s memory when the controller is disconnected
from a power source. If it discharges completely, the sampler will
lose all program settings and all data stored in memory when the
external power source is disconnected.
The battery requires replacement every five years. The sampler
keeps track of the time that has passed since the battery was
installed. To view this information, select INTERNAL BATTERY
from the Maintenance screen (see example at left). After 5
seconds, the sampler asks if you have replaced the internal
battery (see example at left).
Select YES to reset the countdown to 59 months from the current
date.
While replacing the battery, it is likely that the stored readings
will be lost and your program will revert to the default program.
Before proceeding, retrieve the stored data and record your
program settings.
Note
Teledyne Isco recommends you replace the battery every five
years, as soon as the battery warning appears. To ensure that
the replacement meets Teledyne Isco’s specifications, use only
Isco replacement batteries. (See
Appendix D, Replacement
Parts .)
Keypad Connector
Module Connector
Liquid Detector
Connector
Pump Count
Connector
Connector Board
Connector
Battery
Battery Status Display
WARNING!
REPLACE INTERNAL
BATTERY BEFORE
17-OCT-06
DID YOU REPLACE THE
INTERNAL BATTERY?
YES NO