Eagle Microsystems WT3600 - Manual (Page 7)

4.2 CHECKING FOR TRUNNION DAMAGE / INTERFERENCE.
1. Remove the ton container.
2. The 2 trunnions that support the ton container are hinged at the end where the pipe enters. Lift the
top casting at the opposite end to expose the load cell. The load cell has a small button that faces up.
This contacts a shock pad that is installed in the top casting directly above the load cell. This pad
consists of a metal plate attached to a rubber backing that is glued or taped in place. Check to be sure
that neither the plate nor the entire pad has fallen out on both trunnions. The pad and plate can be
glued back together and put in place with contact cement or double sided tape if they have come
apart.
3. Check for any objects that may have gotten stuck between the top and bottom castings.
4. Lower the top casting. It should not rub against the sides of the bottom casting or anything else as it is
lowered. If grouting was used when the scale was installed check that it is not under or against the top
casting.
CHECKING THE LOAD CELLS.
1. Disconnect the scale cable at the display instrument.
2. Measure the resistance between the green and white wires. This should be approximately 1502
ohms.
3. Measure the resistance between the black and red wires. This should be approximately 600 ohms.