Service manual
110
5.1.2.14. Changing the Z encoder photodetector
a) Remove the arm housing.
b) Remove the protective sheeting of the encoder photodetector.
c) Remove and unsolder the photodetector cable.
d) Solder the cables on a new photodetector and fit it on the unit.
e) Remount the protective sheeting and the arm housing.
5.1.3. Dispensing system
5.1.1.1. Removing the thermostated needle set
a) Remove the arm housing.
b) It is recommendable to remove the needle before handling the unit to prevent it from being damaged.
c) Disconnect the electrical connectors and the Teflon tube.
d) Remove the entire thermostated needle unit by removing the 4 screws that hold it in place. The fan is separated from
the rest of the unit.
5.1.3.2. Changing the needle fan
a) Remove the thermostated needle.
b) On removing it, taking out the 4 screws that hold it in place, the fan is left separate from the unit.
5.1.3.3. Changing the needle Peltier cell
a) Remove the arm housing
b) It is recommended to remove the needle before continuing to handle the unit to prevent it from being damaged.
c) Disconnect connectors and the Teflon tube.
d) Remove the entire needle thermostatation system (body, fan and electronics), held in place by the 4 screws (1).
e) Remove the electronics board.
f) Remove the radiator.
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