Installation Instructions

ManualsBrandsSiemens ManualsLarge Stroke (BC1)Servomoteur de vanne électronique SKD…U Notice d’installation

Document No. 129-217

September 24, 2018

SKD…U Electronic Valve Actuator

Item Number: 129-217-04, Rev. DA Page 1 of 6

Product Description

The SKD…U actuator requires a 24 Vac supply signal

to control a Flowrite™ 599 Series valve with a 3/4-inch

(20 mm) stroke.

Product Numbers

Non-Spring Return Spring Return

SKD60U SKD62U

SKD82.50U SKD82.51U

Warning/Caution Notations

WARNING:

Personal injury or loss of life

may occur if you do not follow a

procedure as specified.

CAUTION:

Equipment damage or loss of

data may occur if you do not

follow a procedure as specified.

Required Tools

• 5 mm Allen wrench

• Small and medium flat-blade screwdrivers

Expected Installation Time

20 minutes for factory-installed actuator

45 minutes for field replacement of actuator

Prerequisites

WARNING:

If mounting the actuator to a valve

already in line, either close the shut-off

valves in the piping (upstream first,

then downstream) or switch off the

pump to allow the differential and static

pressure in the valve to drop.

Mounting Positions

Figure 1. Acceptable Mounting Positions.

Using the Weather Shield

The SKD must be in the vertical position. Complete

instructions for the mounting of the Weather Shield are

included with that product.

NOTE: Use the top knockout position when installing

the Weather Shield. See Figure 17.

Figure 2. Weather Shield Installation Position.

Installation

If you are mounting an actuator on a new valve, begin

with the instructions in Figure 3.

Summary of content (6 pages)

PAGE 1
Installation Instructions Document No. 129-217 September 24, 2018 SKD…U Electronic Valve Actuator Product Description Mounting Positions The SKD…U actuator requires a 24 Vac supply signal to control a Flowrite™ 599 Series valve with a 3/4-inch (20 mm) stroke. Product Numbers Non-Spring Return SKD60U SKD82.50U Spring Return SKD62U SKD82.51U Warning/Caution Notations Personal injury or loss of life may occur if you do not follow a procedure as specified.
PAGE 2
Document No. 129-217 Installation Instructions September 24, 2018 Removing the Actuator from the Valve 1. Remove the actuator cover. 2. Disconnect the wires and conduit, if installed. 3. Loosen the valve stem retainer using a 5 mm Allen wrench and lower the valve stem into the valve. 4. Loosen the yoke nuts using a 5 mm Allen wrench in the actuator yoke. 5. Remove the actuator from the valve, being careful not to damage the valve stem. Continue with Mounting an Actuator to a Valve. 5 Figure 6.
PAGE 3
Document Number: 129-217 Installation Instructions September 24, 2018 Wiring CAUTION: Use care when removing the knockout. Do not damage the circuit board. Do not use autotransformers. Use earth ground isolating step-down Class 2 transformers. Determine supply transformer rating by summing total VA of all actuators used. The maximum rating for a Class 2 power supply circuit is 100 VA. Actuator Power Consumption SKD6…U SKD82.50U SKD82.
PAGE 4
Document No. 129-217 Installation Instructions September 24, 2018 Wiring for SKD82…U, Continued Figure 13. Spring Return SKD82.51U. Connecting Terminals Figure 12. Non-Spring Return SKD82.50U. Connecting Terminals G Y1 Y2 Cm1 c1 c2 1000  System Potential 24 Vac (+) Outward movement of coupling piece (0 to 1) Inward movement of coupling piece (1 to 0) Limit switch for 100% stroke ASC9.3DU double auxiliary switch ASC9.3DU double auxiliary switch ASZ7.
PAGE 5
Document Number: 129-217 Installation Instructions September 24, 2018 Three-Way Valve Actuator pressure cylinder moves: • Outward: Valve opens between port NC and C. • Dimensions Inward: Valve opens between ports NO and C. NOTE: The valve body assembly determines the complete assembly action.
PAGE 6
Document No. 129-217 Installation Instructions September 24, 2018 Dimensions, Continued CAUTION: Be careful when removing the knockout. Do not damage the circuit board. NOTE: Use the top knockout position when installing the Weather Shield. SERVICE ENVELOPE MINIMUM ACCESS SPACE RECOMMENDED 4 inches (100 mm) 8 inches (200 mm) Figure 17. SKD…U Dimensions in Inches (Millimeters). Information in this publication is based on current specifications.