Tru-Test EC-20, Руководство пользователя

Страница: 11 / 12

7
Most problems are due to the plate meter being out of calibration (see
following points as to why). If in doubt it is worth Zero Calibrating just
to make sure it is correct.
This means that the plate meter does not know where the bottom is and therefore
does not record the reading.
Check Resolution
The cog has wound off.
Replace - Request a spare cog from
your service agent.
Potentiometer is damaged. The
Potentiometer is the shaft part that
drives the cog.
Note:
Under no
circumstances should you apply CRC or
a light oil to the potentiometer. It is a
dry bearing and any lubricant will
render the potentiometer useless.
Send the plate meter to your service
agent for repair.
Check that the metal shaft is coming
right back into the base of the tube.
Ensure that there is no grass or soil
build-up preventing it from doing so.
Also check the washer at the bottom of
the shaft is not catching on the bottom
of the plate. Clean the plate meter.
Metal shaft is bent. Straighten or request a replacement
part from your service agent.
Grass or soil build-up inside case. Clean the plate meter.
Flutes on steel shaft have become filled
with grass or soil. Clean the plate meter.