Uwatec A700 Maintenance Manual page 5

1 - Expel
1
2
Lever – need not be removed! Visually
inspect the lever to be sure an
inexperienced technician hasn‟t bent it
previously. The lever should "parallel" the
inlet tube from end-to-end.
A700 Step-by-step maintenance procedures.
22. Expel o-rings
out of the
grooves (slightly)
with one set of
figures and shove
off with other.
Avoid use of
2
tools, they may
cause damage.
S
h
23. Usage of
o
small profile brass
v
o-ring picks is
e
also handy – just
be careful not to
score the o-ring
lands.
24. Pinch and
separate the low
pressure seat.
Note: The LP seat
is a press fit.
Press in / pull
out.
25. Using a
magnifying glass –
inspect the poppet
"shoulders",
marked in red -
for any signs of
due to
wear,
cam action
.
Though rare,
replace as needed.
5
"Flow deflector"
(aspirator) need not be
removed!
If you must – it is a snap
fit. Flow deflector is
orientation specific!
26. Look inside the inlet
tube, with proper
lighting – to be sure
both lever tabs (deep
inside the inlet tube) are
present and imperfection
free.
27. Fully engage function
#7 into the back slots of
the adjustable orifice.
Unscrew
counterclockwise,
until threads have
disengaged, (approx. 4
rotations).
28. Expel the adjustable
orifice with care, by
pushing slowly from the
"knob" side of the inlet
tube. Your tool of choice
must clear the lever tabs
and orifice knife-edge.
29. Remove o-ring, with
soft brass pick.
30. Now thoroughly
inspect the knife-edge
surface using your
finger-nail to detect any
nicks or imperfections,
by rotating the orifice
back and forth.