Vitalograph Compact - Page 12

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DT_0006 Issue 17
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Carefully re-assemble the silicone one-way valve with the hard plastic housing,
taking care not to damage the silicone one-way valve.
Note: It is important that the one-way valve is tted to the cone in the correct
orientation for the different MIP and MEP owheads. Refer to the images below
for the correct orientations. The owhead version is marked on the end cap.
Ensure the one-way valve is fully seated and centered into the groove on the
cone.
Figure 5: Orientation of one-way valve
Screw the MIP/MEP end cap to the cone. Ensure it is fully screwed home and
handtightened.Attachthewhiteendoftheowheadconnectiontubetothe
pressuretappingontheMIP/MEPowhead.Theclearendoftheowhead
connection tube is connected to the push in connector adjacent to the
spirometry connector on the Compact base.
TochecktheMIP/MEPowheadhasbeencorrectlyre-assembledattachaBVF
to the MIP/MEP Flowhead and test as follows:
1. MEPFlowhead:fullyinspirethoughtheowhead.Theone-wayvalveshould
open, and no resistance should be felt. Then attempt to expire. The one-way
valveshouldclose,andasignicantresistanceshouldbefelt.Theonlyair
escapingshouldbethroughtheMIP/MEPPressureVentontheowhead.
2. MIPFlowhead:fullyexpirethroughtheowhead.Theone-wayvalveshould
open, and no resistance should be felt. Then attempt to inspire. The one-
wayvalveshouldclose,andasignicantresistanceshouldbefelt.Theonly
airenteringshouldbethroughtheMIP/MEPPressureVentontheowhead.