Technical information

Retighten the blue locking nut (7) and refit
back plate.
Note: The damper must not be applied
too tightly. This may cause movement
wear and affect the calibration of the
pointer.
Calibration
If the calibration is found to be inaccurate,
the pointer should be adjusted against a
master gauge (9). Test calibration of
gauge by placing two loadcells into a
press, one loadcell being connected to a
master gauge (9), the other to the gauge
to be calibrated (1).
For identification purposes, the only parts
requiring adjustment are painted red and
green.
First slightly unscrew link screw (10),
painted green, then adjust knurled toggle
screw (11), painted red, by hand. Turn
clockwise to accelerate the reading and
anti-clockwise to decrease reading.
This should be done on a gauge test rig or
equivalent.
After correct adjustment has been made,
retighten link screw (10). Other screws
must not be interfered with.
Loadcell repair
The loadcell itself can be made
inoperative if a loaded hopper is dropped
by accident onto it, or if aggregate were
tipped from a dumper directly into the
hopper.
Both could cause the top half to turn over
at an angle.
This means that at least one '0' ring has
been damaged. When this happens, the
loadcell must be disconnected from the
gauge and removed from the machine
and the damaged rings replaced.
There are two methods used for opening
the loadcell, as follows:
SERVICING 3.9