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6-3
Maintenance 6
Cleaning
1) Pull the axle away from the valve main body.
2) Remove the ceramic stator from the valve axle.
3) Tap the valve inner body against a clean, solid
surface to remove the spring and PTFE spring cover.
4) Do not remove the inner ceramic surface from
the valve main body.
5) The parts can be cleaned with a non-abrasive cloth
dampened with alcohol, or by autoclaving them.
6) Dry the components using a lint-free cloth.
7) Check that the ceramic parts are dry and wait
for them to cool to room temperature before
reassembling the valve.
PTEF seal
Ceramic
stator
Valve axle
Spring
Ceramic and
PEEK rotor
PTFE-end piece
Valve axle guide
Cleaning the Tee Junction
The Tee junction is a single piece. Apart from dis-
mounting it from the 402, there is no disassembly
procedure. The Tee junction can be cleaned or
autoclaved.
1) Disconnect the inlet and outlet tubing from the
Tee junction.
2) Dismount the Tee junction and syringe assembly
and separate the syringe from the Tee junction.
3) Undo the two screws securing the Tee junction
to the 402 front plate and remove the Tee junc-
tion.
4) Autoclave the Tee junction.
5) Reinstall the Tee junction by following the
instructions given in Chapter 3.