Error Messages And Malfunctions - Mettler Toledo DO307 Mode D'emploi

Error messages
7.

Error messages and malfunctions

Coded error messages can appear on the temperature display; these and other malfunctions are listed in
the following table:
Error messages
E1
E2
E3
E4...En
Malfunctions
No gas flow in titration
cell at 200 mL/min
Drift too high
Moisture content found
less than expected
No temperature display
Oven does not heat up
Subsequent consump-
tion of titrant too high
14
Cause
Internal Pt1000 sensor faulty
Board: Hardware fault
Overtemperature protection
has responded
Possible cause
Gas inlet/gas outlet
connections not tight
Screw cap not tight
Titration cell not tight
Gas inlet/gas outlet
connections not tight
Drying agent for purge gas
exhausted
No purge gas
Discharge tip of the gas
outlet tubing blocked
LED display or board faulty
Cable not plugged in
Fuse blown
Temperature set too low
Heating faulty
Titration finished too early
Temperature too low
Corrective action
Call METTLER TOLEDO service
Call METTLER TOLEDO service
Switch apparatus off and then on again; if the
error is again displayed, call METTLER
TOLEDO service
Call METTLER TOLEDO service
Corrective action
Check connections
Tighten screw cap, check sealing
See Operating Instructions of the titrator
Check connections
Replace drying agent in gas drying unit
Check purge gas supply
Clean discharge tip with solvent
Check line voltage and fuses, replace if
need be, otherwise call METTLER TOLEDO
service
Plug into cable socket
Change fuses (see Section 8.1)
Set temperature higher
Call METTLER TOLEDO service
Increase stirring time
Set higher temperature
DO307
METTLER TOLEDO