Performing inspection / maintenance
Changing the filter elements on the CTU 1xx1
Tools needed:
Strap wrench (for opening the union nuts)
1. Remove the left side panel.
To do this, turn the locks 90° in a
counterclockwise direction using the
four-sided hollow socket key. Flip the
side paneling away from the CTU and up
out of the lower guide.
Remove the ground bond wire to the side
panel.
2. Drain the test liquid from the filter
housing.
To do that, carefully unscrew the drain
plug (2) at the bottom end of the filter
bowl in a clockwise direction using a 6
mm Allen wrench.
The filter bowl contains approx. 1.5
liters test liquid. Catch the test liquid that
drains out in a suitable container and put
it in the analysis chamber after changing
the element.
3. Loosen the coupling nut (1) by turning it
in a clockwise direction and then remove
the filter bowl (2).
Use a strap wrench to remove
the coupling nut.
CTU 1000 Series
en(us)
Page 65 / 92
BeWa CTU1000 3229578p en-us 2017-04-25.doc
2017-04-25
