GE Carestation 620, User'S Reference Manual

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Low pressure leak test (with ACGO)
This is an alternate manual test for low pressure leaks on systems
with an ACGO.
Do not use a system with a low-pressure leak. If there is
a low-pressure leak anesthetic gas will go into the
atmosphere instead of the breathing system.
1. Check the leak test device.
• Put your hand on the inlet of the leak test device. Push hard
for a good seal.
• Squeeze the bulb to remove all air from the bulb.
• If the bulb completely inflates in less than 60 seconds,
replace the leak test device.
2. Turn off the system.
3. Set the ACGO switch to the ACGO position.
4. Turn off all vaporizers.
5. Test the anesthesia machine for low-pressure leaks:
• Turn all flow controls fully clockwise (closed). Do not
overtighten.
• Connect the leak test device to the ACGO outlet.
• Squeeze the bulb repeatedly until it is empty.
• If the bulb completely inflates in 30 seconds or less, there is
a leak in the low-pressure circuit.
6. Test each vaporizer for low-pressure leaks:
• If testing a Tec 7, Tec 820 or Tec 850 vaporizer set to 1%.
• If testing a Tec 6 Plus vaporizer set to 12%.
• Repeat step 5.
• If the bulb completely inflates in 30 seconds or less, there is
a leak in the vaporizer tested.
• Set the vaporizer to Off.
• Test the remaining vaporizers.
7. Remove the test device from the ACGO port.
Make sure all vaporizers are turned off at the end of the
low-pressure leak test.
Agent mixtures from the low-pressure leak test stay in
the system. Always flush the system with O2 after the
low pressure leak test (1 l/min for one minute).
8. Flush the system with O2.
WARNING
WARNING
•
5 Preoperative tests
2076152-001
5-13