Metrohm 835 Titrando - Manual (Page 39)

3 Troubleshooting
Titrando Installation Instructions
33
3 Troubleshooting
3.1 Problems
Problem Possible cause Measures
"On" LED does not
light up although the
Titrando is con-
nected to the mains
supply.
Either the Touch Control or
the computer is not switched
on, or the plugs are not
plugged in correctly.
Check the plug connections and
switch on the Touch Control or the
computer.
Titrando with internal
dosing drive only:
"Status" LED does
not light up although
an exchange unit is
in place.
The exchange unit has not
been attached correctly.
Remove the exchange unit and
push it on again until it clicks into
position. The LED blinks while the
data is being read out from an intel-
ligent exchange unit (806) and is on
continuously when the exchange
unit has been recognized correctly.
The exchange unit flat cock
is not in the change position.
Move the flat cock manually to the
change position (switch lever point-
ing to the right).
Titrando with internal
dosing drive only:
The exchange unit
cannot be pushed
into position. The piston rod in the ex-
change unit is not in the cor-
rect position.
Move the piston rod to the correct
position (see exchange unit Instruc-
tions for Use, Section "Attaching
the exchange unit").
Titrando with internal
dosing drive only:
The exchange unit
cannot be removed
and the "Status" LED
blinks slowly.
Dosing or filling is currently
taking place and / or the Ti-
trando is not in the change
position.
Stop the run or carry out a "Fill"
step.