When PUMP ON is pressed the first time after power up, the AutoCAT®2 Series purges
the pneumatic system of ambient air for three cycles which consist of a purge beat
followed by 9 mixing beats. This results in optimal Helium concentration at start-up.
When the pump is ON, a pressure transducer in the internal helium line monitors the
action of the stepper motor and bellows. This transducer is the source of the balloon
pressure waveform displayed on the AutoCAT2 Series display. The system monitors the
BPW for speed of inflation and deflation and will re-purge as needed to maintain
optimal performance. If a small helium leak exists, the AutoCAT®2 Series will
automatically refill the IAB line without interrupting pumping. If larger leaks are
detected, the AutoCAT®2 Series alarm system will shut down the pump.
NOTE: The alarms must be ON for automatic condensate removal and IAB refills to occur.
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