Metrohm 756 KF Coulometer User Manual
Page 115
5.2 Error and special messages
756/831 KF Coulometer, Instructions of Use
107
pear each time the Coulometer is switched on.
Exit: New start.
silo empty
The silo memory is switched on but is empty and a titration
has been started.
Corrective action: Fill at least the first 1 silo line before starting
the first titration.
Exit:
silo full
The silo memory is full (255 lines).
Exit:
stop time reached
The titration has been stopped as the max.titration time has
been reached.
system error 3
The instrument adjustment data have been overwritten.
Exit:
message appears each time the instrument is switched on
until it has been readjusted (Metrohm service).
system error 14
No communication between the Coulometer and the con-
nected Remote Box.
Possible causes:
-
The Remote Box was connected when the Coulometer was
running
-
Coulometer has a fault.
-
Remote Box has a fault.
Remedy: Set under
>peripheral units
,
Remote
Box: OFF
, switch off Coulometer, take away Remote Box and
switch on Coulometer. Contact Metrohm service.
time-out PC keyboard
A connected PC keyboard has been used to call up an ad-
dress (e.g.
rupted.
Possible causes:
-
Remote Box has a fault.
-
PC keyboard has a fault.
Exit: Correct fault and switch Coulometer off/on.
transmission error
With a Remote Box connected characters are received which
cannot be interpreted.
Possible causes:
-
Wrong key combination has been pressed.
-
Wrong PC keyboard has been selected.
-
The barcode reader supplies garbled characters.
-
The Remote Box has a fault.
Exit: Rectify fault and switch Coulometer off/on.
validate instrument
Validation interval has elapsed.
Exit:
work.conditions not ok
During the titration there was too high a resistance at the
generator electrode. The result could be incorrect. Reasons:
- Not enough reagent in the titration vessel.
- Gas bubbles when working with the oven: Set smaller gas
flow at the oven.