Table of Contents
Advertisement
MAINTAINING LMS1000
Observe the Following Admonishment
DANGER! AC and DC power may be present. This system operates from DC input power. Various AC
and/or DC voltages may be connected to the input/output circuit cards contained within the system.
Performing the following procedures may expose service personnel to hazards. These procedures
should be performed by qualified service personnel familiar with the hazards associated with this type of
equipment. These hazards may include shock, energy, and/or burns. To avoid these hazards:
a)
The tasks should be performed in the order indicated.
b)
Remove watches, rings, and other jewelry.
c)
Prior to contacting any uninsulated surface or termination, use a voltmeter to verify that no voltage
or the expected voltage is present.
d)
Wear eye protection, and use recommended tools.
WARNING! Before handling any circuit card, read and follow the instructions contained on the Static
Warning Page located at the beginning of this manual. DC input power should always be removed from
the shelf before inserting or removing a circuit card. To avoid possibility of circuit card damage from
static discharge, a static wrist strap grounded through a one megohm resistor should always be worn
when handling the circuit cards.
Replacing the CPU Memory Backup Battery (586505000/586505500 Main Cabinet or
582140000/582140001/582126100 Primary Bay Only)
CAUTION! Danger of explosion if battery is incorrectly replaced. Replace only with the same or
equivalent type recommended by the manufacturer. Dispose of used batteries according to the
manufacturer's instructions.
Vertiv Co. recommends that the memory backup battery be replaced once a year.
The CPU circuit card employs a 3 volt 170 mAH lithium battery (P/N 241163100) which has a shelf life of ten
years. Under typical discharge conditions (25 degrees C), the battery can power the memory for about 5000
hours. If the circuit card is removed from service for an extended period of time, the battery should be
insulated from the battery holding clamp using a piece of cardstock or similar material. However, this action will
destroy all contents of the memory and clock. If it is necessary to save the configuration of a system, download
the information to a floppy disk and then later upload the information back into the system. Refer to
"UPLOADING AND DOWNLOADING THE CONFIGURATION" in "Operating LMS1000".
When the lithium battery reaches approximately 2.5 volts, a local indicator illuminates. When this happens it
means the lithium battery, under typical conditions, will be able to power the memory for about another ten
days.
Procedure:
NOTE!
Figure 4:
Refer to
Only) (cont'd on next page) as this procedure is performed.
1.
Remove DC input power from the LMS1000 CPU circuit card.
Vertiv™
| NetSure™ LMS Data Processing Unit User Manual (Section 5847) | Rev. ZA
Replacing the CPU Memory Backup Battery (Main Cabinet or Primary Bay
515
Advertisement
Table of Contents
