4 Preoperative Tests
1009-0307-000
4-15
ISO 5358 or BSI
standard positive
low-pressure
leak test
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CAUTION
Do a positive pressure leak test at the ACGO port only.
1. Connect the leak test device to the
ACGO port with the positive pressure
leak test adapter.Push the adapter into
the ACGO port throughout the test to get
a good seal.
•
Test device ref:
1001-8976-000 (4 kPa);
1001-8975-000 (25 kPa);
1009-3119-000 (Adapter).
2. Turn on the auxiliary common gas outlet (switch in the ACGO position).
3. Turn all controls fully clockwise (minimum flow).
4. Fully open the needle valve on the test device.
•
Keep the test device flow tube vertical for accurate results.
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CAUTION
If the needle valve is not fully open, this test can damage the
pressure gauge on the test device.
5. Open the O
2
flow control and set a total flow of 0.4 L/min through the
flowmeter on the test device.
6. Make sure that the pressure gauge on the test device reads zero and that
all other flow controls are fully closed.
7. Close the needle valve on the test device until the test gauge reads:
•
BSI: 20 kPa (2.9 psi)
•
ISO 5358: 3 kPa (0.4 psi)
8. If the flow through the test device is less than 0.35 L/min (ISO) or 0.3 L/
min (BSI), there is a low pressure leak in the anesthesia machine. Refer to
Part 2 of this manual.
