Mindray Datascope AS 3000, Service Manual

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AS3000™ Service Manual 0070-10-0683 1 - 7
Theory of Operation Components
1.3.3 Rear View
FIGURE 1-4 AS3000 Rear View
24. Top Shelf Assembly
The Top shelf Assembly includes the work light and its switch. It also serves as a storage
area.
25. Gas Input Assembly
The Gas Input Assembly allows gas in the pipeline and backup gas cylinder to enter the
AS3000 for regulation. The Pressure regulator reduces pressure to 36 psi (250 kPa). The
O
2
operated valve can open allowing N
2
O to enter the flowmeter only when O
2
pressure is
above 7.3 psi (50 kPa). Otherwise, N
2
O cannot enter the gas circuit. The pressure switch
generates a signal when the input pressure is below 29 psi (200 kPa), and the system will
provide an audible alarm.
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25
26
27
28
29
30
31
32
33