Metrohm 750 Autosampler - Manual (Page 49)

4 Notes – Maintenance – Faults
750 Autosampler
46
"Cannot execute! Autosampler is currently running."
An attempt was made to begin an operation while the Autosam-
pler is currently running an operation. For example, if a manual
injection is running and an attempt was made to run a method.
"Final vial # must be greater than or equal to start vial."
An attempt was made to program the final vial in a program step
to a value less than the start vial. The final vial must always be ≥
the start vial.
"Maximum number of Steps for Method is 50"
All 50 program steps in a method have been programmed and an
attempt was made to add or insert a program step.
"Method Number does NOT exist!"
An attempt was made to run, delete, or copy a method that is un-
programmed.
"Needle at lowest position. Select different vial."
An attempt was made to run a manual injection from a vial when
the transfer needle was currently in the selected vial at the lowest
needle position.
"Needle Stalled! Manual Injection not completed."
A needle stall occurred while running a manual injection. A nee-
dle stall generally occurs if the transfer needle hits an obstruction
when attempting to enter the vial. An obstruction may be from the
tray or sample vial being seated incorrectly or the vial cap getting
stuck in the vial.
"Needle Stalled! Needle & Loop Rinse not completed."
This error is identical to the aforementioned error except that it
occurs while running a manual rinse.
"No Steps programmed!"
An attempt was made to delete a program step in an unpro-
grammed method, i.e. the method contains no steps.
"No vials available! All vials have been used in other Steps."
An attempt was made to append or insert a program step but
there are no unprogrammed vials available. All of the vials have
been programmed in previous steps.
"Only ONE injection per vial allowed for a Quick Rinse."
More than 1 injection per vial was entered for a program step with
quick rinses. Only one injection per vial is allowed for vials with a
quick rinse because the transfer needle must leave the vial to in-
dex to the rinse vial immediately after injecting the sample and a
vial cannot be reentered after puncturing the vial cap.
"Priority Sample currently running."
An attempt was made to begin a priority sample while a priority
was already running.