BrandTech Scientific Titrette - Manual (Page 60)

b
d
c
e
g
60
a) Remove the rear housing and take out the mounting
tool.
b) Pull out the telescoping filling tube and the recirculation
tube (Fig. b).
c) Use the mounting tool to unscrew the filling valve
(Fig. c).
d) If the sealing ring is contaminated or damaged, carefully
remove it with a pair of curved forceps (Fig. d).
e) Clean the filling valve and sealing ring in an ultrasonic
bath, or replace them (Fig. e).
f) Insert the cleaned or new sealing ring, if necessary
(as in Fig. e).
g) Screw in the filling valve first by hand (Fig. g) and then
tighten it with the mounting tool (1/4 turn is sufficient).
6.
Cleaning / replacing the filling valve
Always perform a standard cleaning before dismantling the
instrument!
Cleaning Dismantling instrument · Component replacement
If the instrument does not fill up, and if some elastic resis-
tance is evident when the piston is rotated upward, then it
is possible that the ball valve is merely stuck.
In this case, loosen the ball valve using light pressure, for
example, with a 20 µl plastic pipette tip (see the figure at
the side).
Note: