Diaphragm pump N87TTE Ex
Servicing
Translation of Original Operating- and Installation Instructions, english, KNF N87TTE Ex 01/13
19
8.3. Replacing structured diaphragm and valve
plates/sealings
Motor disconnected from mains and de-energized
Pump free of dangerous substances
Spare part*
Position
Quantity
Structured diaphragm
(7) in Fig. 5
1
Valve plate/sealing
(7) in Fig. 7
2
Tab. 12
* According to Spare parts list, chapter 10
Quantity Tools/Material
1
Phillips screwdriver No. 1
1
Phillips screwdriver No. 2
1 Felt-tip
pen
Tab. 13
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Always replace the valve plates/sealings and structured dia-
phragms together to maintain the pump performance.
WARNING
Danger of explosion from generation of
explosive atmosphere!
Leaky connections can lead to dangerous explosive
atmospheres.
Î
Make sure that structured diaphragm and valve
plates/sealings are not damaged, clean and
properly installed.
Î
Check pneumatic pump connections for leaks.
Î
Work carefully when performing servicing.
Î
Replace defective parts immediately.
WARNING
Health hazard due to dangerous substances
in the pump!
Depending on the substance transferred, caustic
burns or poisoning are possible.
Î
Wear protective clothing if necessary, e.g.
protective gloves.
Î
Clean pump with suitable measures.
Conditions
Spare parts
Tools and material
Information on procedure