Masoneilan 51/52/53 Series Cylinder Actuator | 11
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Operation
Actuator
Increasing air pressure into the Top Plate moves the Piston Plate subassembly (15) down, while increasing
pressure into the Yoke moves the Piston Plate subassembly up towards the Top Plate. The spring-return
versions provide mechanical fail-safe operation in the desired direction in case air supply pressure is lost.
Handwheel Manual Override (Optional)
There are two handwheel designs (CM and DM) available depending on actuator size. A handwheel
provides manual control of the valve position in case of air supply failure. Operation of the CM and DM
handwheels are the same.
Do not exceed supply pressure indicated on identification plate.
For pneumatic operation, the handwheel must be placed in the Auto Position. Travel is locked if
the handwheel is not in the Auto Position.
