Metrohm 774 Oven Sample Processor - Manual (Page 144)

6 Appendix
774 Oven Sample Processor, Instructions for use 138
∗ gas flow too high The gas flow rate is higher than the set max. limit. Regulate
the gas flow.
∗ gas flow too low The gas flow rate is lower than the set min. limit. Regulate
the gas flow.
∗ gas flow sensor defect The flowmeter is defective. Call your Metrohm servicing tech-
nician.
∗ invalid position The selected sample position does not exist or is defined as
a special beaker or the selected special beaker is not de-
fined.
∗ invalid rack code The rack code read in by the changer has not been found in
the internal table.
∗ manual stop The previous determination has been stopped manually.
∗ max. temp. reached The current oven temperature is higher than the set safety
limit in the configuration.
∗ meas.pt list overflow The measuring point list of the oven temperature values
already contains 400 data items and is unable to accommo-
date further measured values. Choose a longer measuring
interval for the next determination (under , >re-
port).
∗ missing beaker No vessel was found at the selected position after a MOVE
command.
∗ rack data missing No sample rack fitted or no rack data can be found for the
fitted sample rack.
∗ raise lift first Unable to execute a rotary movement of the rack since the
lift is located beneath the defined rotary position.
∗ RS232 error xx A data transfer error has occurred. It may be the case that
the transfer parameters of the RS232 interface do not corre-
spond to those of the receiving device.
∗ SCAN timeout The connected device has not sent the expected signal
within the defined timeout time. It may be the case that the
sample determination was not performed regularly or there
may be a discontinuity. Check the connected device.
∗ system error #3 The adjustment data for temperature measurement or for the
flowmeter is missing. Call out your Metrohm servicing tech-
nician for readjustment.
∗ system error #12 Incorrect 'External Bus' address. Switch off, set the address
to 0 (rotary switch on the rear side of the unit) and switch the
unit back on.
∗ Temp. not reachedyet The oven heater has been unable to reach the set oven tem-
perature in the preset time. Choose a longer heating interval.
∗ temp. sensor defect The temperature sensor is defective or not connected. Call
your Metrohm servicing technician.
∗ user memory full The memory for the user-defined methods is full. Methods
not used or methods used only rarely must be deleted be-
fore saving new methods.
∗ wrong rack The fitted rack does not correspond to that assigned to the
method under 'Parameters'.