User manual

SOP-RTS-002-0008-v01 Title: Operation and Maintenance of Bacharach CO2
Analyzer
Print ID Number:
Original Effective Date: 10/5/2011
Current Version Effective Date:
Page 2 of 4
Form rev. 2/18/2011
8.1.3. When first switched on, there is a warm-up period before the CO
2
level is
displayed (approximately 20 sec for the 2820 model; 60 sec for the
2810/15 analyzer).
8.1.4. Normal fresh-air background reading of CO
2
is approximately 340 ppm.
8.2. Pump Operation
8.2.1. Momentarily press the on/off button to switch on the pump; likewise,
pressing it again will turn the pump off.
8.2.2. Connect the sampling probe and hose assembly to the gas inlet
connector on the top of the analyzer.
8.2.3. Particulate filter P/N 54-0548 is placed on top of the gas inlet to prevent
dust or dirt from being drawn into the instrument.
8.2.4. Replace particulate filter once a month or when the filter is contaminated
as evidenced by a slower response time.
8.2.5. Run pump 30 minutes before zeroing.
8.3. Pump Contamination
8.3.1. To check for contamination, turn on the pump and hold your index finger
over the inlet fitting.
8.3.2. The pump should normally stall.
8.3.3. If the pump continues to run, then the pump is contaminated.
8.3.4. The analyzer needs to be sent to a vendor for repair and cleaning.
8.4. High humidity Gas Sampling
8.4.1. If used to draw in gas samples from areas with high levels of humidity
such as an incubator, first install the small round particulate filter that is
supplied with the instrument onto the analyzer’s outlet using a 1.5
section of Portex tubing.
8.4.2. Connect a lure fitting to the particulate filter.
8.4.3. Connect the Nafion tubing that is also supplied with the analyzer to the
luer fitting using a 2” section of Portex tubing.
8.4.4. On the other end of the Nafion tubing use a 6-12” section of Portex
tubing to connect to the incubator.
8.4.5. When testing water jacketed-incubators, the potential exists of drawing
water droplets that form inside the incubator’s internal sample line
through the Nafion tubing and into the analyzer.
8.4.5.1. A water trap is provided with the instrument and should be
installed between the incubator and the Nafion tubing.
8.5. After completing a test
8.5.1. Run the pump while sampling fresh air until the reading is below 0.1.
8.5.2. This purges the residual CO
2
and moisture before proceeding to the next
test.
8.6. Maintenance
8.6.1. Keep the analyzer clean by wiping with soft cloth dampened with a mild
detergent solution.
8.6.2. Do not leave the analyzer in direct sunlight or in areas where there is
excessive heat.
8.6.3. There are no user-serviceable parts inside the analyzer.