Teledyne Everywhereyoulook BLZZRD, Installation And Operation Manual

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BLZZRD ™ Portable Refrigerated Sampler
Section 9 Maintenance
9-13
Figure 9-6 Removing the desiccant bag
9.7 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. You can check this replacement
date by viewing the sampler’s maintenance screens (see the
example Resetting the Internal Battery Countdown Timer ).
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. To ensure that the replacement meets Teledyne ISCO’s
specifications, use only Teledyne ISCO replacement batteries.
(See Appendix D,
Replacement Parts .)
To replace the internal battery:
1. Open the controller case by following the instructions in
Section 9.5. Separate the case bottom and top by discon-
necting the four connectors.
2. Lift the desiccant box from the case.
3. Remove the grounding strap by loosening the
1
/
4
-inch stop
nut (Figure 9-7).
4. Disconnect the remaining connectors from the main circuit
board (Figure 9-7).
Desiccant Bag