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Ball valve assembly
After maintenance work
8.5 Maintenance of the diaphragms
Before maintenance work
Maintenance of the double diaphragm pump
37.
32.
Fig. 5: Maintenance of the ball valves
1.
Unscrew the screws (37) with which the connection fittings
are fastened to the pumping housings
2.
Check the surfaces of the valve balls (34) and valve seats
(33) for wear and damage
ð Replace worn or damaged parts.
3.
Push the two seals (32) into the grooves of the valve seat
(33) and insert the valve seat in the pumping housing
4.
Place the valve ball (34) on the valve seat and screw the pipe
elbows (39) to the pumping housing
1.
Attach the air supply line to the double diaphragm pump
2.
Open the compressed air supply
3.
Open the discharge line of the double diaphragm pump
4.
Open the suction line of the double diaphragm pump
ð Now the double diaphragm pump can pump again
Check all connectors for leak-tightness
1.
First close the suction line of the double diaphragm pump
2.
Close the discharge line of the double diaphragm pump
3.
Shut-off the compressed air supply
4.
Vent the double diaphragm pump
5.
Remove the air supply line from the double diaphragm pump
37.
39.
34.
33.
38.
A1138
25
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