User manual

Poseidon MKVI User Manual
Chapter 1
Page 33
Figure 1-56.
Loading the Cartridge End Cap into the
new replacement SofnoDive
®
797
cartridge.
Figure 1-57.
Loading the Poseidon MkVI Cartridge
Top Cap into the replacement Sofno-
Dive
®
797 cartridge
Inspect the two larger radial o-rings on the cartridge end cap (Figure 1-56), and if either is
damaged, cut, or gouged, replace it (the third o-ring that mates with the cartridge does not
form a seal). Ensure that each o-ring is lubricated and that there is no debris, dust, sand, etc.
on any of the o-rings. Insert a dry, clean, disinfected annular sponge into the receiver pocket
for the cartridge end cap water trap (this is the reverse of the procedure shown in Figures 1-52
and 1-53). Be sure the inner diameter of the sponge is locked under the retainer plate (see
Figure 1-52).
Insert the end cap into the bottom of the SofnoDive
®
797 cartridge. The “bottom” end is the one
with the smooth cylindrical outer face. Be sure when you insert the end cap into the cartridge
that the radial o-ring does not extrude from its circular groove. The top radial o-ring in the end
cap should insert smoothly into the CO
2
cartridge until it is no longer visible and the bottom of
the cartridge is ush with the ledge just above the two main radial o-rings.
Inspect the cartridge top plate (Figure 1-57) and its radial and axial o-ring seals. If any of the
o-rings are damaged, cut, or gouged, replace them. Ensure that each o-ring is lubricated and
that there is no debris, dust, sand etc. on any of the o-rings. Insert the cartridge top plate into
the top of the SofnoDive
®
797 cartridge. The “top” end is the one with the projecting ribs along
the circumference of the end of the cylinder. Be sure when you insert the cartridge top plate
into the cartridge that the radial o-ring does not extrude from its circular groove. The radial
o-ring in the cartridge top plate should insert smoothly into the CO
2
cartridge until it is no
longer visible and the top rim of the cartridge is ush with the ledge just above the radial o-ring.
Unlike the radial o-ring that seats in the bottom end of the cartridge, the top radial o-ring does
form an important seal, so take extra care to make sure the seal is snug and reliable.
(Figure 1-58; this is the reverse of the procedure shown in Figure 1-51 above). Inspect the
radial sealing surface at the bottom of the cartridge housing (Figure 1-59). This surface should
be free from scratches, gouges, and dings. Ensure that this surface has a smooth application
of lubricant and that no debris, dust or other foreign material is present.
Figure 1-58.
Insert cartridge top plate and inspect
the face-seal o-ring.
Figure 1-59.
Inspect and lubricate cartridge housing
end cap radial sealing surface.
”Top” end of cartridge
has projecting ribs.
Radial o-ring seal to top of
SofnoDive
®
797 cartridge
Twin radial o-ring
seals for cartridge
housing end cap
Radial o-ring seat to bottom
of SofnoDive
®
797 Cartridge