Bird Technologies 4304A - Manual (Page 31)

20
Line Section Replacement
1. Remove the element (See "Element Removal" on page 19).
2. Use a
5 ⁄
16
" hex wrench to loosen the nuts on the meter terminals. Remove
the wires from the terminals.
3. Use a
5 ⁄
16
" allen wrench to loosen the set screws on the range switch knob.
Remove the knob.
4. While supporting the line section, remove the screws on the front of the
housing, located on either side of the element socket.
5. Pull the line section and attached circuit board out the back.
6. Remove both screws securing the circuit board to the line section and
remove the circuit board.
7. Replace the line section and reassemble by reversing these steps.
Note: The circuit board cannot be replaced in the field. If the circuit
board is defective, return the unit to a Bird Service Center.
Meter Replacement
1. Use a
5 ⁄
16
" hex wrench to loosen the nuts on the meter terminals. Remove
the wires from the terminals.
2. Remove both screws on the sides of the housing, to either side of the meter.
3. Remove the meter assembly.
Note: Make sure that the shock ring, gasket, and mounting bracket
are in place on the new meter. The shock ring should be on the front face
of the meter, and the mounting ring and mounting bracket on the back.
4. Align the bracket so that the mounting holes are parallel to the meter lugs.
5. Place the housing face-down on a flat surface.
6. Insert the meter assembly, pressing until the side holes line up with the
holes in the housing.
7. Screw into place.
CAUTION
When handling the circuit board, use caution: Do not bend the DC contact
finger that extends into the line section. Do not lose the contact finger
insulator or the spacers on the mounting screws.
Do not disturb the potentiometer settings.