KERN FTB Service Manual page 47

Assembly
• Replace the bottom plate and the adjustable feet.
• Scales without IP65 protection: Turn the scale the right way up, replace the pan support plate and secure it with the
screws. Before finally tightening the screws, make sure that the pan support plate is aligned squarely with the scale
housing. Caution: screw torque 10 Nm!
• Scales with IP65 protection (see exploded view drawings in Chapters 2 and 3 ):
• Mount the rubber seal and the cover plate and insert the 2 M3 x 8 fastening screws (but do not tighten them yet).
• Lay the large flange on the cover plate, then lay the membrane in position and align the 3 fastening holes. Next, lay the
small flange in position and align it exactly. Insert the 3 M3 x 10 screws and tighten them evenly together with the two
M3 x 8 screws of the cover plate.
• Align the large flange exactly on the 4 fastening holes of the membrane.
• Lay the load plate support in position, and then insert the two M6 x 30 fastening screws and slightly tighten them. Before
finally tightening the screws, make sure that the pan support plate is aligned squarely with the scale housing.
Caution: screw torque 10 Nm!
• To be able to screw the large flange and the membrane to the load plate support, the flange and the membrane must be
lifted slightly, because the fastening screws are too short to reach to the threaded holes in the flange. To do this, proceed
as follows:
Carefully insert a fine screwdriver under the side of the large flange and lift the flange slightly together with the membrane.
Insert one of the 4 M3 x 8 fastening screws in the corresponding drilled hole in the load plate support and screw it in only
slightly. Insert the remaining 3 M3 x 8 fastening screws into the membrane and then tighten all 4 screws evenly.
Note: Instead of using a screwdriver to lift the flange and membrane, this can also be done by temporarily inserting two
M3 screws at least 15 mm long into two opposite holes in the load plate support and slightly tightening them. (These
temporary screws are long enough to reach the threaded holes in the flange and to lift the flange together with the
membrane). Insert two of the 4 M3 x 8 fastening screws into the free drilled holes in the load plate support and screw
them in slightly. Undo the two temporary screws and insert the two remaining M3 x 8 screws in their place. Tighten all
4 screws evenly.
• Replace the weighing pan.
• Calibrate the scale in technician mode and linearize it (Chapter 7). If a weighing cell with another capacity has been
installed, the new weighing range ("Range") and the resolution ("Resol.") must also be selected.
Note: Scales with strain gauge weighing cells have fixed cornerload stops that do not need to be readjusted.
48 FTx/ITx-SH-e-0720