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.
8-1
8
B14703 BATTERY PACK REPLACEMENT
INSTRUCTIONS
The B14703 Battery Pack is a UL approved replacement for use in the Avtron T477W Bonding Meter. The use of other Battery Packs
voids UL certification and may impair intrinsic safety for meter use in hazardous locations.
Battery Packs are shipped in a discharged condition. Therefore, newly installed batteries must be recharged overnight before use. See
T477W manual for recharging instructions.
8.1
Battery Replacement Instructions
1.
Remove two screws located on the bottom side of the T477W meter case and remove the case.
2.
Remove the two screws retaining the supports attached to the spacers located in each corner of the Printed Circuit Board;
then remove supports.
3.
Marker, unsolder, and disconnect the four wires connected to battery terminals 1, 2, 3, and 4.
4.
Remove the four ¼ inch hexagonal spacers located in each corner of the printed circuit board.
5.
Carefully spread the P.C. Boards apart by pivoting the rear board at the end having interboard connections.
6.
Remove two screws and washers located on the underside of the printed circuit board which are used to retain the
Battery Pack.
7.
Remove the Battery Pack. Install the replacement Battery Pack. The Battery Pack must be located within the P.C. Board
outline. If not, it may be upside down. If a keying block is not installed, it is recommended that one be installed using
epoxy cement as shown below (Figure 8-1).
