KNF LABOPORT SC820G Manual De Instrucciones página 191

Vacuum system SC820G / SC840G
1 Head screw
2 Pressure
plate
3 Head plate
9 Gas ballast
10 Connection
tube
11 Hose
connection
AS
12 Hose
connection
HLK
13 Gas ballast
O-ring
14 Connection
tube O-ring
Translation of Originial Operating Instruction, KNF 339416-339418 02/23
Make sure that the shim rings located between the di-
aphragm and connecting rod do not fall into the pump
housing.
Remove any shim rings adhering to the diaphragms and
fit them on the associated connecting rod thread.
Prerequisite for ensuring the pneumatic performance of
the pump is that the same number of shim rings be
mounted as before.
3. Screw in the new diaphragm (7) by hand and tighten it by
hand.
Be careful not to press the diaphragm (7) downwards.
4. Perform steps 1 – 3 for the second pump head.
5. Dispose of the replaced diaphragms (7) properly.
Change O-rings
12
Fig.28: Changing O-rings
1. Pull the two pump heads apart.
2. Pull the connection tube (10/Fig. 28) out of the head plate
(3).
The two hose connections (11) and (12) remain mounted
in the head plates.
10
1
14
Servicing
11
13
2
3
DE
EN
FR
ES
IT
9
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