Installation Guide

5
FIG 18
PIEZOELECTRICITY SENSOR INSTALLATION AND CABLE
Sometimes, inaccurate balance or incorrect position is caused by the breakage of the press sensor. The changing
method of the sensor is as following:
(1)Remove the upper cover and the right side panel of the balancer.
(2)Detach the nut1 and 2, elastic washer, plain washer and large flat washer.
(3)Loose the back nut3.4.5 to detach every parts.
(4)Change the new sensors and tight the dual-head screw and then tight nut 5. The installation
of the negative and positive pole of the piezoelectric ceramics disk of the sensor must follow the picture.
(5)Use the spanner to tight the nut4 and then nut 3. At this moment, you should pay attention
to the horizontal and vertical sensor screws should be vertical. And the end of the screws should be just fallen into
the 2 holes. Mount the nut1 and 2, elastic washer, plain washer and large flat washer and completely tight them.
Usually, lock nut 1 and then nut 2. We require to flat the elastic washer and then return the nut 1/41/2turn. Use this
way to get the normal pre-pressure of the press sensoruse torque wrench to lock and the torque is 40NMThere
are glass glue coat on the surface of the press sensor and the normal installation result of the piezoelectric ceramics
disk of the sensor is the IR should be larger than 50MΩ.
(6) Discharge the output line of the shortcuts press sensorinsert into the computer board after discharge to avoid
the breakage of the computer board.
(7) Insert the vertical& horizontal(∥)sensor plugs according to the original position.
(8) Calibrate the balancer again and install the upper cover and the side panel after check result is normal.
(9)After change the computer board, phase sensor or the pressure sensor , it must self-calibrate.