Mindray WATO EX-55, Service Manual

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3-6
Before the test, make sure that the vaporizers are correctly installed.
1. Connect the O2 pipeline supply or open the O2 cylinder valve.
2. Turn the O2 flow control and set the O2 flow to 6 L/min.
3. Make sure that the O2 flow stays constant.
4. Adjust the vaporizer concentration from 0 to 1%. Make sure that the O2 flow must not
decrease more than 1 L/min through the full range. Otherwise, install a different
vaporizer and try this step again. If the problem persists, the malfunction is in the
anesthesia system. Do not use this system.
5. Test each vaporizer as per the steps above.
NOTE
z
Do not perform test on the vaporizer when the concentration control is between
“OFF” and the first graduation above “0” (zero) as the amount of anesthetic drug
outputted is very small within this range.
3.6 O2 Flush Test
3.6.1 In Mechanical Ventilation Mode
1. Connect the O2 pipeline supply or cylinder.
2. Set the bag/mechanical ventilation switch to the mechanical ventilation position.
3. Set the system switch to the position or set the system to Standby.
4. Plug the patient connection using a test plug.
5. Turn off ACGO (if ACGO is configured).
6. Let the folding bag completely collapse.
7. Press and hold the O2 flush button . Measure the time required for fully inflating
the folding bag.
8. Repeat the operation (opening patient connection to collapse the folding bag) at least
twice.
9. Check that the folding bag is fully inflated within 1 to 3 seconds.