Teledyne BDS-3960 - Oxygen analyzer - Manual (Page 60)

Maintenance BDS 3960
Teledyne Analytical Instruments 60
Figure 5-2: Removing Fuse Block from Housing
5.4 Battery Backup Replacement
The software application running on the PPC is mantained when
power is removed from the analyzer by a single 3 volt lithium battery. If
the unit is powered down and the battery power is low, you run the risk
of losing the program. To prevent this from happening, replace the
backup battery as often as six months. Use a CR2032 or DL2032 for
replacement.
Note: Make sure that the main battery of the PPC is charged
when you change the backup battery or you will the
software application. If the software application is lost for
any reason, use the installation floppy disk as instructed in
section 5.5.
1. Power Analyzer down.
2. Loosen the thumb screws of the front panel and slide the drawer
assembly out.
3. Remove the two screws on the back of the front panel that hold
the PPC in place, then remove the PPC.
4. Slide the switch on the back of the PPC to Backup. Open the
battery compartment and remove the old battery.
5. Install a new battery. Make sure that the ‘+’ side is on top facing
out.
6. Replace the battery cover and move the switch to lock position.