Replace Diaphragm, Valve Plates/Seals And O-Rings - KNF LABOPORT N820.18 EX Traduction Du Mode D'emploi Original

Servicing
Requirements
Material and
tools
Information on
the procedure
40
Chemically-resistant Laboratory pump N820.18 EX / N840.18
11.3 Replace diaphragm, valve plates/seals and
O-rings
Pump
Tab.20:
Quan- Material
tity
1 TORX® screwdriver T20
1 TORX® T25 screwdriver (only for N840.3FT.29.18G)
1 Spare part set (see Chapter Spare parts)
1 Pencil
Tab.21:
à
Always replace diaphragms, valve plates/seals, and O-
rings together to maintain the performance of the pump.
à
Replace the diaphragms and valve plates/seals of the in-
dividual pump heads one after the other.
Translation of Original Operating Instruction, KNF 317428-317425 05/21
Necessary requirements
- Pump switched off and power cable pulled
out of socket
- Pump cleaned and free of hazardous mate-
rials
- Hoses removed from pneumatic inlet and
outlet
EX