6 - 41
Periodic Maintenance
Preoperative Checklist
7. Check AIR cylinder supply:
a.
Disconnect line pressure hoses (if connected) and return the cylinder and line
pressure gauges to zero using the flow control knobs.
b.
Open the AIR cylinder, and check for pressure.
c.
Close the AIR cylinder and observe the pressure gauge for evidence of high-pressure
leaks.
d.
A typical full AIR cylinder’s pressure is 1900 psi. Replace the cylinder if its pressure
is less than 1000 psi.
e.
Reopen the cylinder.
8. Power up the system and follow the on-screen prompts to perform the
Leak and Compliance Tests.
9. Test Flowmeters:
a.
Check that all floats are at the bottom of the flow tubes with the flow control valves
closed.
b.
Adjust the flow of all gases through their full range and check the floats for erratic
movements.
10. Test Hypoxic-Guard System:
For -01 units:
a.
Attempt to create hypoxic O
2
/ N
2
O mixture by slowly opening the N
2
O Flow
Control Valve.
b.
Continue to increase the N
2
O flow and observe O
2
and N
2
O rise in proportion to
maintain a minimum concentration of 21% O
2
in fresh gas.
For -02 units:
a.
Attempt to create hypoxic O
2
/ N
2
O mixture by opening the N
2
O flow control valve
completely.
b.
Increase the O
2
flow and observe O
2
and N
2
O rise in proportion to maintain a
minimum concentration of 21% O
2
in fresh gas.
11. Test Line Pressure Gas Supplies:
a.
Inspect the supply hoses (should not be cracked or worn).
b.
Connect the supply hoses, verifying correct color coding.
c.
Adjust both the O
2
and N
2
O flows to at least mid-range.
d.
Verify that the O
2
and N
2
O supply pressures hold (45–55 psi).
e.
Shut off the O
2
and N
2
O flow control valves.
f.
Adjust the AIR flow to at least mid-range.
g.
Verify that the AIR supply pressure hold (45–55 psi).
h.
Shut off the AIR flow control valve.
12. Accessories Connection:
a.
Connect a breathing circuit to the Breathing System.
b.
Connect a breathing bag to the bag arm.
Summary of Contents for Datascope AS 3000
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