Metrohm 751 GPD Titrino - Manual (Page 190)

4.1 Error and special messages
751 GPD Titrino
187
4 Error messages, Troubleshooting
Data transfer inoperative See measures on page 185.
4.1 Error and special messages
XXX bytes missing
XXX bytes missing. For the storage of a method or a silo line
XXX bytes are missing or there is insufficient RAM for a TIP
sequence.
Remedy: <QUIT>. Delete methods no longer needed or use
fewer silo lines.
calibrate electrode
The calibration interval is expired.
Exit: Carry out a calibration with mode CAL or delete
calibration by entering data for pHas or slope in key
<CAL.DATA>.
card battery low
The battery tension is between 2.37...2.64 V.
Remedy: <CLEAR> and change battery as soon as possible.
card busy
The memory card is busy.
card not accessible
The card is not accessible because it is used by the RS
interface or a card report is prepared.
card read/write error
Working with the card a read/write error appeared.
Remedy: <CLEAR> or insert a different card.
card unformatted
Remedy: <CLEAR> and format the card.
card write-protected
Writing functions are not possible, if the card is write-
protected.
Remedy: <QUIT> and remove write protection, i.e. push write
protection to the left.
change card battery
The date for changing the battery is expired. Leave the card in
Titrino during battery change to ensure constant power supply.
Remedy: <CLEAR>, change the card battery and enter a new
battery change date.
check drive unit!
The buret is not connected (correctly) or defect.
Remedy: Rectify fault or <STOP>.
check electrode
With polarized electrodes. There is a break or short circuit.
Possible causes and rectification of the fault:
- the electrode is not plugged in ⇒ plug it in
- the electrode is not immersed in the solution ⇒ immerse it
- the electrode is defective ⇒ use new electrode.
- the electrode cable is defective ⇒ use new cable.
The electrode test can be switched off under the <PARAM>
key.
Exit: Rectify fault or <STOP>.
check exchange unit
The Exchange Unit is not mounted (properly).
Exit: Mount Exchange Unit (properly) so that the coupling
engages or <STOP>.
check remote box
The Remote Box is not (correctly) connected or the Remote
Box is connected but not activated under the <CONFIG> key.
Exit: Connect Remote Box (correctly) and set "Remote Box:
ON" under <CONFIG>, >peripheral units. Switch the Titrino
off/on.