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Summary of Contents for DeZurik MO
- Page 1 DeZURIK MO MANUAL OVERRIDE FOR ROTARY DIAPHRAGM ACTUATORS D10114 Instruction August 2012...
- Page 2 MO Manual Override for Rotary Diaphragm Actuators Instructions These instructions provide information about the MO manual override used with the DR40, DR55 and DR85 Rotary Diaphragm actuators. They are for use by personnel who are responsible for installation, operation and maintenance of Rotary Diaphragm actuators.
- Page 3 DeZURIK MO Manual Override for Rotary Diaphragm Actuators Table of Contents Description - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
- Page 4 DeZURIK MO Manual Override for Rotary Diaphragm Actuators Description This manual override is designed specifically to manually operate the valve if the air supply to the actuator is interrupted. This manual override contains no customer serviceable components and should not be disassembled.
- Page 5 DeZURIK MO Manual Override for Rotary Diaphragm Actuators Removing the Manual Override 1. Shut down the flow in the pipeline. Flow in the pipeline with the actuator removed can slam the valve closed causing personal injury and damaging the flow system. Shut down the flow in the pipeline before removing the actuator from the valve.
- Page 6 DeZURIK MO Manual Override for Rotary Diaphragm Actuators Installing the Manual Override 1. If the manual override was removed from the diaphragm cover, apply a bead of non-hardening sealant such as Loctite Permatex Form-A-Gasket #2 to the mating surfaces of the manual override housing and diaphragm cover, then fasten the manual override to the diaphragm cover.
- Page 7 DeZURIK MO Manual Override for Rotary Diaphragm Actuators Figure 1—Stud Requirements For DR40 Diaphragm Cover Removal Figure 2—Stud Requirements For DR55 and DR85 Diaphragm Cover Removal August 2012 Page 7 D10114...
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