12-12
ALARMSUSER HANDBOOK
To clear the ow fault:
• Press the RH button .
or
• Press and hold FLOW ACK .
12.6.6 Calibration Required
During warm-up, if the
‘CALIBRATION REQUIRED’
flag is displayed and an
audible alarm and Red LED’s
are activated, the instrument
has detected a fault in the
calibration memory during
start-up and is unable to
continue without re-calibration.
The instrument must be switched off immediately. Follow appropriate
action required by your company for calibration.
An extended period is possible, allowing the user to continue to
use the instrument for a set amount of time after the calibration has
expired. When this extended period is over, the user will be forced
to switch off the instrument and return the instrument for calibration.
(in Conned Space Mode only)
Note: In Conned Space mode, the pump will not switch off if a
sample fault exists.
12.6.5 Calibration Expired
During the warm up of the instrument, a check is done to verify if
the calibration date has expired. If the instrument is congured to
pause if calibration is due, the user is asked to continue or not. If yes
is selected, the user can continue using the instrument as normal.
If no is selected, the user is forced to switch the instrument off and
return the instrument for calibration. The calibration due date is only
displayed during the warm up of the instrument and there will be no
indication during normal operation.
Fig. 12.12 Calibration Required
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