Avtron Model T477W Bonding Meter
with B14703 Battery Pack Replacement Instructions
Part Number T477WC15292
B14703 Battery Pack Replacement Instructions
Subject to the EAR, ECCN [9E610.a].
This information is subject to the export control laws of the United States, specifically including the Export Administration Regulations (EAR),
15 C.F.R. Part 730 et. seq. Transfer, retransfer, or disclosure of this data by any means to a non-U.S. person (individual or company), whether in the United States or abroad, without any
required export license or other approval from the U.S. Government is prohibited, including without limitation any diversion to a military end user or use in a military end use application.
8-2
Figure 8-1.
Battery Pack Location
8.
Check Battery Pack identification terminal numbers. They must be located adjacent to similar numbered connecting
wires; that is, 1 goes to 1, 2 goes to 2, 3 goes to 3, and 4 goes to 4.
9.
Install Battery Pack mounting screws and washers, previously removed.
10.
Reposition printed circuit boards together. Then reinstall ¼” hexagonal spacers in each corner of board.
11.
Connect and solder the four wires to their respective battery connections.
NOTE
The instructions in step 12 below may be possible if the replacement battery has sufficient charge.
12.
Measure Battery Pack terminal voltages:
Terminal 2 (Positive) to 1 (Negative)
Terminal 4 (Positive) to 3 (Negative)
If voltage is greater than 4.8 volts, the meter may be briefly tested for satisfactory operation. Then recharge overnight.
If Battery Pack voltage is less than 4.8 volts, do not test meter. Recharge Battery Pack overnight before testing.
13.
Following recharge, Battery Pack voltage must be approximately 5.5 ± 0.3 volts.
14.
Reinstall case supports and case using hardware previously removed. Do not install case until Battery Pack voltage
testing is completed.
