Dislodging A Stick Valve Ball; Replacing The Batteries - BRAND Titrette Instrucciones De Manejo

d.
e.

12.3 Dislodging a stick valve ball

12.4 Replacing the batteries

If the battery symbol in the display is blinking, the battery capacity is depleted. The batteries must
then be replaced.
Use only the specified battery type: 1.5 V (AAA/UM4/LR03) micro-batteries. The batteries are not
rechargeable!
a.
9974 69
d.
If the sealing ring is contaminated or damaged, care-
fully remove it using a pair of angled tweezers.
e.
Clean the filling valve and sealing ring (ultrasonic bath)
or replace them.
f.
Insert the cleaned or new sealing ring, if necessary.
g.
Screw in the filling valve first by hand and then tighten
it with the assembly tool (1/4 turn is sufficient!).
If the instrument does not fill up, and if some elastic resis-
tance is evident when the piston is pulled upward, then it is
possible that the valve ball is stuck.
In this case, dislodge the valve ball using light pressure; for
example, with a 200 µl plastic pipette tip (see the figure at
the side).
If the instrument does not fill up, and if some elastic resis-
tance is evident when the piston is pulled upward, then it is
possible that the valve ball is stuck.
In this case, dislodge the valve ball using light pressure; for
example, with a 200 µl plastic pipette tip.
a.
Unscrew the air vent cap by hand or use a coin.
b.
Remove the rear housing shell.
c.
Remove the battery compartment covers
d.
Remove the dead batteries using a screwdriver.
e.
Insert the new batteries and press them firmly into the
sockets. Ensure that the polarity of the batteries corre-
sponds to the symbols on the battery compartment.
f.
Tightly re-seal the battery compartments with the cov-
ers. Carefully press the edges so that each cover fits
snugly on all sides without any gaps between it and the
battery compartment.
g.
Hang the rear housing shell from the top and then snap
it shut.
12 Cleaning
81
Operating manual