Johnson Controls Y20EBD Series Technical Bulletin

Technical Bulletin Issue Date 0493 © 1993 Johnson Controls, Inc. 1 Part No. 34-420-6, Rev. A Code No. LIT-121775 lntroduction 3 • Application Details 3 • Glossary 4 Installation Procedures 5 • Tools Needed 5 • Kit Includes 5 • Installation Overview 6 • Configuration and Mounting 7 • Actuator and Linkage 13 • Travel Limits 16 Ch ...

lntroduction The Y20EBD Valve Linkage converts the rotary motion of an M100 Series Motor Actuator to a linear movement in order to operate several types of valves. A rack and pinion drive mechanism provides the linear movement. The rack assembly contains a spring that, when compressed ...

The following terminology is used in these instructions: CW--Clockwise refers to the direction of rotation of the actuator shaft as seen from the load end. Zero Position--The fully counterclockwise position of the actuator shaft--the de-energized position of a spring return actuator. Ste ...

Installation Procedures • screwdriver, small blade • screwdriver, medium blade • pliers • wrench, adjustable, medium • socket wrench, 3/8 inch drive 4 12 2/3 8 13 10 9 7 1 11 5/6 14 Y20D1-01 Item Description Quantity Item Description Quantity 1 Mounting Bracket Assembly 1 8 Wa ...

Upright mounting of the motor actuator is recommended. When valve mounting, do not mount below the horizontal plane of the valve piping to prevent damage to the motor actuator if the valve leaks or develops condensation. Do not install the motor actuator in atmospheres with explosive vap ...

The information obtained in the following steps will be used for the travel adjustments later. The reason that these measurements are here is that it is easier to take the measurements prior to installing the linkage and actuator than after. For valves with various lift requirements, t ...

When configuring the yoke, two areas have to be considered: • the distance the actuator will be from the valve (height) • the direction of drive the actuator is going to provide to the valve To determine the height: Yoke Mounting Surface Valve Stem Full Up Valve Stem Full Up Figure 3 ...

• High position for stem lengths from 4 inches to 5-7/8 inches (101.6 to 147.2 mm) in full up position. V90CA valves from 4 inch through 6 inch (101.6 through 152.4 mm) pipe sizes. LOAD END LOAD END Y20A1-05 Figure 5: Long and Short Stem Valve Bodies The left side of Figure 5 sh ...

1. With the motor actuator next to the valve, view the motor actuator from the load end. 2. Determine the type of valve being used and the direction that will be required to drive the stem from its initial position. • Stem Up Two Way Valve--Drive Down to Close • Stem Up Two Way Valv ...