KNF LABOPORT SH820G Manual De Instrucciones página 144

Servicing
60
3. Carefully remove the pump heads to the side (see Fig.
14).
The pneumatic connections remain mounted in the pump
heads.
Fig.14: Remove pump heads
Replacing the diaphragm
On the pump, the diaphragms (7) are changed succes-
sively to ensure that the shim rings (8) are used in the
same quantity as previously.
1. Press down one diaphragm (7) so that the other di-
aphragm is in the upper change point.
2. Carefully turn the upper diaphragm (7) counterclockwise
by hand and remove it.
Translation of Originial Operating Instruction, KNF 325562-325564 02/23
Vacuum system SH820G / SR820G / SH840G / SR840G