Wascomat EX-30 S and EX-50 S Operating & Maintenance Manual - Tensioning of Return Spring
of
88
55
Mechanical and electrical design
Pin of
return spring
Tongue of spring
Stop screw
4749
64
Tensioning of return spring
With the valve housing removed:
-
Turn the return spring so that the “tongue” of the spring is resting against
the stop screw.
-
Position the valve housing over the return spring so that the pin on the
spring will fit into the recess on the piston rod. (Note: the piston rod
should be installed so its recess is aligned along the housing.)
-
Then turn the housing one turn clockwise. (This will screw the pin of the
spring into the piston rod. The spring will be now tensioned approx. 1/4
of a turn on account of the lead in the piston rod.)