Precision Medical Air-Oxygen Blender - Manual (Page 20)

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Air-Oxygen Blender
HIGH FLOW
Figure F
16. Remove each diaphragm housing assembly [20]
from the manifold by removing the two hex socket
head screws [21] on the top of each diaphragm
housing with 5/32 hex key.
NOTE: If you have received engineered composite
blocks, keep the four (4) Hex Socket head
screws [21] and discard the aluminum
blocks you have removed.
[20]
QUANTITY - 2
[21]
QUANTITY - 4
Figure G
17. Using 5/32 in. long hex wrench, unscrew and
remove plug [22] from the side of the manifold
block. (For High Flow models with a manifold outlet
assembly remove plug from left side of manifold
block instead of from the bottom of the manifold
block.)
18. Remove rear plug [22] from the back of the manifold
block. Insert a long 5/32 hex key through rear plug
opening, unscrew and remove the alarm bypass
body [23], ball [24] and spring [25].
QUANTITY - 2
[23]
[25]
[24] [22]
[22]
[22]
NOTE: For Engineered Composite Diaphragm Blocks disregard Figure “H” and proceed to Figure “I”
in the Blender maintenance process. Diaphragm blocks shall be installed in pairs and aluminum
blocks shall not be mixed with engineered composite blocks.
Figure H
19. Remove and discard the two O-rings [26] from the
bottom of each of the diaphragm housings [27].
20. Remove the four hex socket head screws [28] holding
diaphragm housings together.
21. Remove and discard the diaphragm [29].
22. Using Retaining Ring Pliers, remove and discard check
valves [30]. Ensure inner O-ring [36] is removed from
diaphragm housing.
NOTE: If check valve [30] comes apart when removing
it from diaphragm housing, a ¼ in. hex wrench
or (#3 Phillips Screwdriver) will be needed to
complete removal of the check valve from the
diaphragm housing.
23. Repeat steps 19-22 for the remaining diaphragm
housing assembly.
24. Make sure all O-rings have been removed from
diaphragm housings and check valves.
25. Disassembly is complete.
26. Manifold block may be ultrasonically cleaned.
Aluminum Blocks
[27]
[26]
QUANTITY - 2
QUANTITY - 4
[28]
QUANTITY -4
[29]
[30]
QUANTITY- 2
[36]
QUANTITY -2