Standby and On-Demand Modes
Section 10
2230 Silica Analyzer
Thermo Scientific Orion
77
During automatic analysis, if the system detects a SAMPLE LOSS for more than one hour, it
will switch to stand-by house-keeping. When the sample recovers, it will switch back to RUN
mode after waiting for 1 minute to allow for fresh sample to flush the sample chamber.
STAND-BY:
In stand-by the system will execute periodic house-keeping routines.
Every one hour, the fluids in reagents 1, 2, 3, standard and sample lines are moved back and
forth. Every 6 hours, the system primes all the reagents lines with 1 mL each and then flushes
the reaction cell with either 2.5 mL of standard or if sample is present, the system executes a
clean cycle.
Fluids consumption while unit is left in Stand-by:
4 mL of each reagent per day
10 mL of standard** per day (with no sample). If sample is present, the system will run four
clean cycles per day and will not consume any standard.
** Note that in stand-by mode, the standard is used only to flush the cell. Distilled water may be
substituted instead of silica standard, or a time to refill the standard bottle if unit is kept in stand-
by.
CAUTION
Make sure reagents and standard bottles have enough fluids to
maintain wet lines when the analyzer is kept in stand-by.
OPTIONAL MENU setting:
(Please consult factory before modifying default setup).
In Rev 3.46, an additional sub-menu selection for the Stand-by cleaner solution is provided. To
access, press:
MENU
➔
SETUP
➔
+ (pg 2)
➔
CLEANER PARAMETERS
➔
+ (pg 2)
STDBY CLEANER SOURCE : SMP/STD (default)
STDBY
CLEANER
SOURCE
SMP/STD:
(default) When selected, the system will use sample if present or
in case of sample loss will revert to standard for the periodic flushing of the
reaction cell.
SAMPLE:
The system will use sample only. In case of NO sample (sample
loss) or sensor not assigned the daily priming and flush of the cell is NOT
executed. The system will force a PRIME ALL sequence when analysis is
resumed.
