Atec 8000, Operation And Maintenance Manual, Page: 12 / 80

6 Atmospheric Technology
exceeds 0.03 lpm (other values can be selected by the operator) at the end of the
30 second leak check.
3.1.2.5 Cartridge Connections
Inlet and outlet tubes are connected using male Luer fittings that have been swaged
on the end of the PFA Teflon flow lines attached to the solenoid valves. Some types
of cartridges have a male fitting on one end that requires a female connector to
adapt the sample lines. Excess tubing has been provided to accommodate different
length cartridges. Pushing or pulling the tubing at the point where it emerges from
the front panel can change the tubing length extending from the front panel. Make
sure that the tubing and not the Luer connection is pulled; excess force may
separate the fitting from the PFA Teflon tubing.
3.1.2.6 Mass Flow Controllers
Mass flow controllers with a range of 0-2 liters/min (other ranges available) are used
to control the sampling flowrate in each channel. Operation and maintenance
instructions are provided in Appendix A. Using the Setup option on the display sets
the flowrate.
3.1.2.7
Vacuum Pump
A diaphragm pump is used to draw air through the instrument. The pump is
mounted inside the sampler. It is rated for continuous duty and can maintain a
maximum vacuum level of 24 in Hg. using two MFCs flowing at 1 lpm.
3.1.2.8 Optional 8-Port or 16-Port Expansion Module
The Model 8000 can be expanded to a total of either 16 ports or 24 ports by the
addition of an expansion module. The Model 8008 adds an additional 8-ports while
the Model 8016 adds an additional 16-ports. The expansion module is electrically
connected to the Model 8000 by a single ribbon cable attached to the “EXP 1”
connector on the rear panel. Inlet and outlet pneumatic lines are connected by
attaching the “Flow 1” and “Flow 2” lines form the Model 8000 to the “Flow 1” and
“Flow 2” on the expansion module.
The Model 8000 looks for the expansion unit when power is turned on. If the
expansion module is not connected or there is a communication problem, the
software will not display the additional ports. If the connection between the