2009 by ELTRA GmbH Germany – July 2009 – Service Manual Thermostep
Page 14
Fig. 1.9: LHS - Homesensor
a.)
Unfasten the nut in front and behind the fitting with the aid of the 8 mm open-end
wrenchs.
b.)
Position the encoding screw in front of the sensor.
c.)
Aim the sensor at the correct distance to the encoding screw.
d.)
Tighten the nut in front of the fitting to fix the distance of the sensor.
e.)
Aim the sensor to the correct vertical position (nearly centrally to the encoding screw).
f.)
Fasten the nur behind the fitting.
g.)
Controll right position of the sensor for a contactless passage with the encoding screw
by moving the encoding plate carefully by hand.
h.)
Check correct position and function of sensor by software.
The move sensor controls that an undisturbed rotation can take place, to avoid a damage of
the analyser due to collision.
The movesensor (vertical arrangement) is located to the frontside of the analyser at the guide
bar of the carousseladaptor. It is fixed with two nuts and should be close to the cogwheel
below the encoding plate. To assure an undisturbed revolution the sprockets are registered by
the sensor. It stops the motor if time of recognition is exceeded, to avoid a ripping of the gear
belt or overheating of the motor in case of jam.
The sensor has to be positioned under the spike of the sprockets, so that its possible to
recognize accurately the difference between sprocket and clearance. The distance between
cogwheel and sensor should be as low as possible. The adjusting of the move sensor uses
same procedures the adjusting of the homesensor. To avoid a damage of the sensor, but to
reach an optimal distance to the cogwheel, move the cogwheel after adjusting the sensor by
hand. A complete rotation should take place to be sure that every sprocket is able to pass the
sensor without touching.
