ResMed VPAP III, VPAP III ST, VPAP III ST-A Service Manual page 68

Note: Ensure that each foam pad overlaps two ribs on both the upper and lower sections of
the volute as shown:
4 Add the remaining two R300-7017 foam pads to the outside of the top airpath. Position them
as shown:
1
5 Remove the two existing R300-733 foam pads from the airpath.
1
2
2
Appendix B: Noise reduction upgrade 67