HTC GL 40 D - Page 25

HTC GL 40 D Usage
2.0 19
1.
Move the slide gate up to its end position, see Figure4-6, page19. Then wait
approx. 3 seconds.
Figure 4-6. Push slide gate up
2. Press the valve handle in towards the upper cylinder section, so the valve cover
opens for about 1 second. Then release the handle, see Figure4-7, page19.
Figure 4-7. Filter cleaning
3. Wait a further 2-3 seconds, so a new negative pressure forms in the cylinder
section.