5 Maintenance
Study the instructions carefully. The items refer to the Parts list and service kits section. Handle scrap correctly.
Man = Manually activated
NC = Normally closed.
A/A = Air/air activated.
Diaphragm marking
Fig. A
Size 12.7 / ½ inch and 25 / 1 inch is “a snap connection”. The diaphragm must be all the way on, or it will be over-stretched and
damaged in the closed position. Some force may be needed to push the diaphragm over the “snap connection”.
The diaphragm is mounted onto the actuator rod (which must be in the close position) = diaphragm is uncompressed.
Fig. B
Size 38 (1½) is a screwed connection.
NOTE! The manually actuator must be locked by using small screwdriver into the ø4 hole in the rod (ø4 hole is only in the
manually rod and not the pneumatic version).
The diaphragm is mounted onto the actuator rod (which must be in the close position) = diaphragm is uncompressed.
2508-0075
2508-0076
Figure A
Figure B
ø4 hole
2508-0074
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