BRAND Titrette Instrucciones De Manejo página 57

Dismantling instrument · Component replacement
b) Use a soft cloth to clean the dispensing cylinder and
piston, or replace them.
c) To replace the piston, first slide the light grey safety
ring of the piston rod upwards (Fig. c), and then un-
screw the piston head (Fig. c').
d) Screw a new piston onto the piston rod, and tighten it
securely.
e) Line up the piston gears and those of the piston rod,
turning the piston back a maximum of half a gear tooth
to accomplish this.
f) Slide the safety ring of the piston rod downwards.
g) Orient the toothed rack (1) of the piston rod in the
direction of the air vent opening (2) of the valve block.
This is found opposite the titrating tube connection (3).
Carefully insert the piston vertically into the cleaned or
replaced dispensing cylinder and press it about half-way
in (Fig. g).
The sealing lip of the piston must not be dam-
Note:
aged. Contact with hard objects should be
avoided!
Structural change after January 2012
The connection between the titrating tube and the valve block was
changed as of January 2012.
Attention:
Therefore, when ordering these replacement parts note the distance
between the dosing tube and recirculation tube on the valve block.
If there is no visible gap between the two tubes, when replacing the
dispensing cylinder with valve block always also replace the titrating
tube at the same time (see 'Accessories' page 62).
Cleaning
c
c '
g 1
3
2
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