M&C TechGroup MP47 Ex Operator's manual - Handbuch (Seite 46)

Diaphragm Pumps PJ19424-726 Servicing
Translation of Original Operating- and Installation Instructions, english, KNF PJ19424-726 01/13 18
8.3. Replacing molded diaphragm and valve plates
ƒ Motor disconnected from mains and de-energized
ƒ Pump free of dangerous substances
Spare part* Position** Quantity
Molded Diaphragm (K) 1
Valve plate (T) 2
Valve body (F;G) identically 2 pieces in total
Sleeve (U) 2
O-ring (S) 2
* According to Spare parts list, chapter 10
** According to Fig. 4.
Tab. 12
Quantity Tools/Material
1
Allen key 4 mm
1 Screwdriver blade width 5.5 mm
1 Socket wrench 27 mm
1 Felt-tip pen
Tab. 13
Î Always replace the molded diaphragm, valve plates, valve
bodies, sleeves and O-rings 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 molded diaphragm, valve plates,
valve bodies, sleeves and O-rings are not dam-
aged, 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