Nautel NV15, Руководство по эксплуатации и обслуживанию

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NV15/NV20 Operations and Maintenance Manual Routine maintenance
Issue 3.2 2013-10-01 Page 3-7
Replacing the NVE exciter PWB battery
Replace the battery on the applicable exciter’s NVE exciter PWB (A3A1 or A4A1) once a year, or
whenever the
Exciter A/B- Low Backup Battery
alarm appears (on the AUI or via remote digital
output). Chemical leakage from an old battery can cause damage. Also, the NVE exciter PWB’s
microcontroller may not retain its settings if ac power is turned off while the backup battery power is
low. The battery should be replaced while ac power is applied to the transmitter.
Interval
Every 12 months.
Parts and tools
Replacement battery: 3 V lithium coin cell, 20 mm (Nautel Part # BBLT01, Panasonic # CR2032).
Procedure
Perform the following steps to replace the battery:
1. Ensure ac power is being applied to the transmitter.
2. Open the front door and - without disconnecting any interconnecting cables - slide the
associated exciter forward enough to remove the exciter’s cover. See Figures MD-1 in the
mechanical drawings section at the end of the
NV15/NV20 Troubleshooting Manual to locate
the exciters. See Figure MD-5 to locate the NVE exciter PWB (A1).
3. Gain access to the appropriate exciter’s NVE exciter PWB (A3A1 or A4A1) by removing the
cover.
4. Replace the battery in XBT1 on the NVE exciter PWB.
5. Close the front door.
6. Check for any alarms on the AUI. Battery related alarms should clear. (See “Viewing
transmitter status” on page 2-59 .)