Metrohm 806 Exchange Unit - Manual (Page 36)

6.1 Problems
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28 ￭￭￭￭￭￭￭￭
806 Exchange Unit
Problem Cause Remedy
￭ If necessary contact the Metrohm Service
Dept.
LED "Status" is
flashing fast. The dosing drive is overloa-
ded because the stopcock
is blocked. Switch off the Touch Control or exit PC Con-
trol. Check wether the exchange unit can be
removed. If it cannot be removed, check
wether the flat stopcock still can be turned.
Switch it manually to the exchange position
turning it to the right. Remove the exchange
unit and proceed as described in the manual
for the exchange unit.
The dosing drive is overloa-
ded because the piston is
blocked.This error is dis-
played by the software
(Touch Control or PC Con-
trol / tiamo). Switch the control device off and then on
again. The dosing device is being initialized
during switching on. Remove the exchange
unit and clean it as described in the manual for
the exchange unit in chapter "Care and main-
tenance". Contact the Metrohm service if
removing the exchange unit is not possible.
The data of the exchange
unit cannot be read
because the data chip has
been damaged mechani-
cally or by chemicals. Have the data chip being replaced by the
Metrohm service.Until the data chip is being
replaced you can remove the data chip your-
self in order to be able to still use the
exchange unit. The cylinder volume is auto-
matically recognized nevertheless, but no data
can be read from the exchange unit or be
saved on it anymore.
LED "Status" is not
illuminated although
an exchange unit is
attached. The exchange unit has not
correctly been attached. Remove the exchange unit and attach it again
until it snaps in. The LED flashes during data is
read from an intelligent exchange unit and
lights up constantly if the exchange unit has
correctly been recognized.
No dosing takes
place at all Tubing connections are
blocked or dosing unit is
not assembled correctly. ￭ Check whether the dosing tip is blocked.
￭ Check whether the dosing tubing is con-
nected to the correct port.
￭ Check whether the dosing port is sealed off
with a stopper.
￭ Check whether the VENT port is sealed off
with a stopper (vacuum in the supply bot-
tle!). The VENT port must be open for pres-
sure compensation.