OHAUS TROOPER, Руководство по обслуживанию

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3-4
CHAPTER 3 REPAIR PROCEDURES
3.3 REPLACING THE TROOPER SCALE LOAD CELL ASSEMBLY
The Load Cell Assembly is centrally located inside the scale. See Figure 3-3. The load cell is factory
assembled and the down stops are preadjusted. There are no adjustments to be made on this assembly
after installation.
1. Perform steps 1 through 4 of paragraph 3.1.
2. Carefully remove the load cell wires from connector J4. See Figure 3-2 for wire color and
locations.
3. Remove the four screws holding the Load Cell Assembly to the bottom housing.
4. Lift the Load Cell Assembly out of the bottom housing and replace with a new one.
5. Connect the color coded wiring from the load cell to connector J4. Check that color coded
wiring is correctly installed. See Figure 3-2.
6. Put the jumper across both pins of W1
7. Position the upper housing in place over the scale and connect the flexible cable from the
membrane switch to connector J5A on the Main PC board.
8. Check the LFT lock switch. Make sure it is in the ON position.
9. Turn on the scale. When self testing is completed, the display may indicate an error code. This
is normal.
10.Do not turn off the power. Switch LFT lock switch to its OFF position.
11.Calibrate the scale according to the instructions in Appendix A.
12.After finishing all of the necessary configuration, remove the jumper from W1 and keep the
LFT lock switch in its OFF position.
13.Turn the scale off then on. It will go through all the self testing.
14.If the scale locks up, with software revision showing, this means that W1 is in the closed
position and the LFT lock switch is in the ON position. Change them to the correct position,
W1=Open and LFT lock switch=OFF.
15.Reassemble the scale.
16.Replace the platform on top of the scale.
17. After installation, check all operations, if possible, set the original customer settings back
into the scale and calibrate the scale.