Operating instructions

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Operating instructions METTLER TOLEDO AT balances
- No reference weight has been
loaded.
-A wrong reference weight has been
loaded.
- The balance returns automatically to
the weighing mode.
The weight lies outside the tolerance
The following causes could be respon-
sible:
-a wrong external adjustment weight.
- the weighing pan is loaded during
the adjustment.
The adjustment procedure is aborted
automatically and the balance returns
to the weighing mode.
- You have started the adjustment
test. A weighing sample is still on
the weighing pan. Remove it.
no rEF
Err rEF
Err LOAd
bAd LOAd
7.4 What does this error
message mean?
- Error messages in the display draw
your attention to faulty operation,
namely that the balance was not
able to perform a procedure proper-
ly. Error messages are supported by
an audio signal (“twitter”).
Wrong or missing reference weight
- If one of the application units per-
cent ( % ) or piece ( Stk or PCS ) has
been selected as weight unit 2, the
balance must have a reference
weight available. The following
errors can appear: