Installation Instructions

ManualsBrandsSiemens ManualsControl ValvesSKC Electronic Spring Return Valve Actuator w/ 1-1/2" Stroke (24 VAC)

Document No. 129-368

September 25, 2018

SKB/C62UA Series Electronic Valve Actuator

with Advanced Features

Item Number 129-368, Rev. CA Page 1 of 8

Product Description

The SKB/C62UA valve actuators require a 24 Vac

supply and receive a 0 to 10 Vdc or 4 to 20 mA control

signal to proportionally control a valve. These

actuators work with Flowrite™ 599 Series valves or

other manufacturer's valves with the appropriate

Universal Valve Linkage Kit.

Product Numbers

SKB62UA 3/4-inch (20 mm) stroke

SKC62UA 1-1/2-inch (40 mm) stroke

Warning/Caution Notations

WARNING:

Personal injury or loss of life

may occur if you do not

follow procedure as

specified.

CAUTION:

Equipment damage or loss

of data may occur if you do

not follow a procedure as

specified.

Required Tools

• 24 mm open-end wrench

• 3/8-inch open-end wrench

• No. 1 Phillips or flat-blade screwdriver

• Small adjustable wrench

Expected Installation Time

20 minutes for factory installed actuator

46 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.

CAUTION:

Do not damage or scratch the polished

surface of the valve stem.

Figure 1. Acceptable Mounting Positions.

The vertical position is recommended for mounting

and the only position for the NEMA Type 3R rating

with the Weather Shield.

Figure 2. SKB/C Weather Shield.

Using the Weather Shield

The SKB/C62UA actuator is UL listed to meet NEMA

Type 3R requirements (a degree of protection against

rain, sleet, and damage from external ice formation)

when installed with the Weather Shield, product

number 599-10065, and outdoor-rated conduit fittings.

The SKB/C62UA must be in the vertical position.

Complete instructions for the mounting of the Weather

Shield are included with that product. See Figure 28

for Weather Shield dimensions.

Summary of content (8 pages)

PAGE 1
Installation Instructions Document No. 129-368 September 25, 2018 SKB/C62UA Series Electronic Valve Actuator with Advanced Features Product Description The SKB/C62UA valve actuators require a 24 Vac supply and receive a 0 to 10 Vdc or 4 to 20 mA control signal to proportionally control a valve. These actuators work with Flowrite™ 599 Series valves or other manufacturer's valves with the appropriate Universal Valve Linkage Kit. CAUTION: Do not damage or scratch the polished surface of the valve stem.
PAGE 2
Document No.129-368 Installation Instructions September 25, 2018 Installation If you are mounting an actuator on a new valve, begin with the instructions in Figure 7. Removing the Actuator from the Valve Figure 6. Preparation for Mounting an Actuator on a Valve. Figure 3. Figure 7. Preparing a New Valve. NOTE: Install the stem heating element (P/N ASZ6.6), if used, before proceeding to Figure 9. Figure 4. Figure 8. Figure 5. Page 2 of 8 Siemens Industry, Inc.
PAGE 3
Document Number: 129-368 Installation Instructions September 25, 2018 Mounting an Actuator to a Valve Preparation for Mounting an Actuator on a Valve, Continued NOTE: Install the stem heating element, (P/N ASZ6.6), if used, before proceeding. Figure 9. NOTE: Place the narrow opening end of the nut over the valve stem first. Figure 12. 4 Figure 10. NOTE: Be careful not to break the washer. 5 Figure 13. 6 Figure 11. Siemens Industry, Inc. Figure 14.
PAGE 4
Document No.129-368 Installation Instructions September 25, 2018 Mounting an Actuator to a Valve, Continued Position the actuator to accommodate the wiring. Hold the actuator in place while tightening the retaining clamp. See Figure 15. Figure 18. Figure 15. Figure 19. Figure 16. 2 Figure 20. Figure 17. Figure 21. Page 4 of 8 Siemens Industry, Inc.
PAGE 5
Document Number: 129-368 Installation Instructions September 25, 2018 Wiring CAUTION: Use care when removing the knockout. Do not damage the circuit board. Use the top knockout position. Do not use autotransformers. Use earth ground isolating step-down Class 2 transformers. Determine supply transformer rating by summing the total VA of all actuators used. The maximum rating for a Class 2 step-down transformer is 100 VA.
PAGE 6
Document No.129-368 Installation Instructions September 25, 2018 Automatic calibration proceeds as follows: Wiring Figure 24. Wiring Diagram. Connecting Terminals 24 Vac System Potential (SP) System Neutral (SN) Control Input: 0 to 10 Vdc or 4 to 20 mA (DIP switch selectable) Override Input G G0 Y Z • Actuator runs to the 0 stroke position (1) the green LED flashes . • Actuator then runs to the 100% stroke position (2) the green LED flashes. • Measured values are stored in the EPROM.
PAGE 7
Document Number: 129-368 Installation Instructions September 25, 2018 Stroke Calibration, continued Manual Operation Normally Closed Valve Actuator pressure cylinder moves: • Outward (0 to 1): Valve opens. • Inward (1 to 0): Valve closes. Normally Open Valve Actuator pressure cylinder moves: • Outward (0 to 1): Valve closes. • Inward (1 to 0): Valve opens. Three Way Valve Actuator pressure cylinder moves: • Outward: Valve opens between port NC and C.
PAGE 8
Document No.129-368 Installation Instructions September 25, 2018 Dimensions Figure 28. SKB/C Weather Shield, 599-10065 Dimensions in Inches (Millimeters). CAUTION: Be careful when removing the knockout. Do not damage the circuit board. Use the top knockout position. Figure 29. SKB/C62UA Dimensions in Inches (Millimeters). Information in this publication is based on current specifications.