5-19
5.3.1.4 Precautions for Use of Negative Pressure Ball
The negative pressure ball has a sealing cover and a built-in one-way valve at its front end
and a gas outlet switch at its back end, as shown below. If the front sealing cover is
removed or loosened, the sealing performance of the negative pressure ball will
compromise. In this case, you need to tighten the sealing cover.
Remove the gas outlet switch to flatten the negative pressure ball. Re-install the gas outlet
switch properly when performing the test, as shown below.
Before using the negative pressure ball, make sure that it is not leaky. Check if the front
sealing cover is tightened. Then flatten the negative pressure ball to remove the gas inside.
Install the gas outlet switch properly. Block the front gas inlet with your hand to release the
negative pressure ball main unit. Visiblel expansion of the ball cannot be seen within 30
seconds. Otherwise, replace the ball.
Gas outlet switch
Sealing cover
Tighten the sealing cover
Содержание WATO EX-55
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Страница 133: ...5 13 Negative pressure ball Circuit adapter test fixture Flow sensor pressure sampling pipeline test fixture ...
Страница 134: ...5 14 Vaporizer manifold test fixture Anesthesia machine calibration device 1 MPa 10bar test pressure gauge ...
Страница 242: ...6 54 6 4 1 Electrical Connections Electrical Circuit Diagram ...
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