2009 by ELTRA GmbH Germany – July 2009 – Service Manual Thermostep
Page 38
c.)
Remove the gas tubes from their connectors and note their orientation by their
numbers.
d.)
Unfasten the 2 x 4 mm allen screws at the valveblock of the purging gases that is fitted
to the backside of the instrument (RHS). Hinge the valve block out of the instrument.
e.)
The cylinder of the cover is fixed with snap rings to its fittings at the front- and
rearside of the instrument. Remove this snap rings.
f.)
Push the bolts out of the fittings. Note that at the fitting at the frontside there is an
additional nut, that can be removed with the bolt. The cylinder is now removeable.
g.)
Remove the connectors from the cylinder and fix them at the new cylinder.
h.)
Insert the new cylinder to its fittings.
i.)
Fix it with the bolts and the snap rings. (Remember the additional nut at the frontside.)
j.)
Insert the tubes at the connectors.
k.)
Fix the fittings and the sensors at the cylinder.
l.)
Adjust correct sensor position (see
1.15
).
m.)
Fix the valve block again.
3.5
Change of board
Requried tools:
3 mm allen key
7 mm socket wrench
Screw driver
a.)
Unfasten the 5,5 mm hexagonal screw at the upper left edge of the board and hinge it
down carefully.
Fig. 3.5.1: RHS – Unfasten of the board to hinge it out
