CIRAS-3 Operation Manual V. 1.09  66  support@ppsystems.com 
 
Section 6.  Startup Routine and System Stability 
Checks 
Before You Power Up CIRAS-3 
The time required to be up and running from when you power on CIRAS-3 to when you make your first 
measurement is reasonably short.  Much of the pre-operation phase depends on the how well you 
maintain chemicals.  But there are a few other important considerations.  The most basic pre-operational 
checklist can be summarized by these items: 
•  Be sure that the chemicals are fresh and not exhausted. 
•  Check that the leaf chamber gaskets are in good condition and replace them if they are 
compressed, damaged, or dirty. 
•  Be sure there is sufficient battery power for field operation.  For optimal performance, we 
recommend charging the internal CIRAS-3 Li-ion battery(s) the night prior to field 
measurements using the power supply adapter provided.  The indicating LED on the 
CIRAS-3 console will be a steady green when connected to the charger/power supply.  
The actual state of the battery can be viewed in the lower right hand corner of the display 
when powered on. 
•  Make all necessary electrical connections of cuvettes, accessories and other components 
•  If working at high ambient temperatures (>35-40 
o
C), we recommend shading the console 
to prevent overheating. 
•  Keep the CIRAS-3 on its power supply adapter during warm up to preserve the battery. 
•  If using a CO
2
 cartridge, make sure that one is in place with enough capacity to get you 
through your measurements.  See CO2 Cartridge Status on page 68
.