Keofitt W9, User Manual, Page: 40 / 50

KEOFITT W9 USER MANUAL V.4 PAGE 40
13.5 Replacing a PTFE membrane
To remove an old membrane from the valve head:
1. OPEN the valve (lever position as in illustration A).
2. Unscrew the valve head from the valve body as described in chapter 13.2.
3. CLOSE valve head (illustration A).
4. Push the membrane and bushing apart (illustration B) until the tool for membrane fits under
it.
5. Insert tool for membrane, between the membrane and the bushing (illustration B).
6. OPEN valve head (illustration C).
7. Now the membrane is loosened from the valve head and can be replaced.
To attach a new membrane to the valve head:
8. Set the valve head to CLOSED position (lever position as in illustration B).
9. Place the new membrane on valve head.
10. Mount the membrane bushing with the new Teflon membrane by pressing the tip of the
membrane with your hand until it clicks.
11. Set the valve head in OPEN position (lever position as in illustration A).
12. Insert the valve head into the valve body ass described in chapter 13.3..
13. CLOSE valve head.
IMPORTANT
• Once the membrane has been removed from the valve head the click system in the membrane
might be damaged. Therefore the membrane might be unsafe for further use and it is
recommended not to use the membrane again.
• Do not use hammer or other tool that might scratch the surface of the membrane.
A. B. C.