OHAUS EB SERIES, Service Manual

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CHAPTER 3 REPAIR PROCEDURES
EB Series Scales Service Manual 3-11 Ohaus Corporation www.ohaus.com
3.5 REPLACING THE LOAD CELL COMPONENT
This procedure is used when it is desired to keep the existing Load Cell Frame and replace only
the Load Cell. The Load Cell Assembly is centrally located inside the scale. When the new Load
Cell is mounted to the existing Frame, the Overload Protection Stops must be adjusted.
1. Refer to Section 3.1 and remove Top Housing.
2. Refer to Section 3.4 and perform steps 1 through 4. The Load Cell and Frame
can now be removed. Make sure the Load Cell Cable in the Bottom Housing can
be removed by cutting the tie wrap holding the battery wires together with the
Load Cell cable.
3. Remove the Load Cell, by unscrewing two bolts on the top of the Load Cell and
two bolts on the bottom of the Load Cell. See Figure 3-15.
Figure 3-15. Load Cell Mounting Bolt Locations.
4. Place the replacement Load Cell on the Bottom Load Cell Frame into position
and install the two bolts previously removed. DO NOT TIGHTEN.
5. Position the Top load Cell Frame on top of the Load Cell and install the two bolts
previously removed. DO NOT TIGHTEN.
TABLE 3-1. LOAD CELL SCREW TORQUE SETTINGS.
CAPACITY TORQUE
3 kg
6 kg
15 kg
30 kg
7 N.m / 62 in. lb
10 N.m / 88 in. lb
10 N.m / 88 in. lb
10 N.m / 88 in. lb
6. Align Top and Bottom Frames and tighten screws as indicated. Recheck
alignment.
Load Cell Wiring
Top of Load Cell
Bottom of Load Cell