M&C TechGroup MP47-Z_Ex Operator's manual - Handbuch (Seite 48)

Diaphragm Pumps PJ19423-726 Servicing
Translation of Original Operating- and Installation Instructions, english, KNF PJ19423-726 02/13 20
2. Position the pump head on the housing A according to the felt-
tip pen marking.
3. Fit the 4 allen screws H and tighten them uniformly diagonally
until the disc springs R are flattened.
To prevent parts from warping, start by tightening each of the
screws half a turn alternately.
4. At the valve bodies F and G tighten each three allen screws D
carefully until resistance is noticeable.
5. Check the smooth movement of the pump by turning the
counterweight P.
6. Mount cover N with the four cheese head screws M.
7. Check and ensure the gas-tightness of the pump head and the
tubing:
WARNING
Hazard of explosion caused by leaks
Î Before putting the pump into operation again,
check and ensure the gas-tightness of the pump
head and the tubing. Leakages may lead to ex-
plosion hazard!