KNF LAB LABOPORT SH820G Manual Del Usuario página 122

Servicing
1 Cap screw
2 Pressure
plate
3 Head cover
4 Valve plates/
Seals
5 Locating pin
6 Intermediate
plate
7 Diaphragm
8 Shim rings
46
Removing pump head
1
2
3
4
5
6
7
8
Fig.12: Pump head (pump N820 shown)
The following item numbers refer to Fig. 12, unless speci-
fied otherwise.
1. Mark the pressure plate (2), head cover (3) and intermedi-
ate plate (6) with a continuous pencil stroke. This prevents
the parts from being incorrectly mounted later on.
2. Remove the external screws (4/Fig. 11) of the pump
heads.
Translation of Originial Operating Instruction, KNF 325562-325564 06/21
Vacuum system SH820G / SR820G SH840G / SR840G