Install Instructions

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

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Installation Instructions

Document No. 129-185

October 16, 2002

SKB/C Electronic Valve Actuator

Item Number: 129-185-05, Rev. 011 Page 1 of 8

Product Description

The SKB/C actuators require a 24 Vac supply signal to

control either a 3/4-inch (20 mm) or 1-1/2-inch

(40 mm) stroke valve. These actuators work with

Flowrite™ 599 Series valves with a 3/4-inch (20 mm)

stroke or a 1-1/2-inch (40 mm) stroke.

Product Numbers

SKBx 3/4-inch (20 mm) stroke

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

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 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.

EA0133R2

Not allowed with the

Weather Shield

Not allowed in

any circumstance

Figure 1. Acceptable Mounting Positions.

The vertical position is required for mounting and is the

only position for the NEMA Type 3R rating with the

Weather Shield.

EA0739R1

KNOCKOUT

Figure 2. SKB\C Weather Shield.

Using the Weather Shield

The SKB/C 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/C must be in the vertical position. Complete

instructions for the mounting of the Weather Shield are

included with that product. See Figure 31 for Weather

Shield dimensions.

Summary of content (8 pages)

PAGE 1
Installation Instructions Document No. 129-185 October 16, 2002 SKB/C Electronic Valve Actuator Product Description The SKB/C actuators require a 24 Vac supply signal to control either a 3/4-inch (20 mm) or 1-1/2-inch (40 mm) stroke valve. These actuators work with Flowrite™ 599 Series valves with a 3/4-inch (20 mm) stroke or a 1-1/2-inch (40 mm) stroke.
PAGE 2
Document Number: 129-185 Installation Instructions September 30, 2002 Installation If you are mounting an actuator on a new valve, begin with the instructions in Figure 6. Preparation for Mounting an Actuator on a Valve. Removing the Actuator from the Valve N V1 V2 21 V1 V2 21 11 11 EA0134R1 N 2 3 1 0 1 EA0181R1 Figure 7. Preparing a New Valve. NOTE: Install the packing heating element, if used, before proceeding to Figure 8. EA0137R1 Figure 3.
PAGE 3
Document Number: 129-185 Installation Instructions September 30, 2002 EA0140R1 5 Figure 10. 0 1 4 EA0143R1 FINGER 5TIGHTEN Figure 14. EA0141R1 6 7 Figure 11. NOTE: Install the packing heating element, (P/N 599-00418), if used, before proceeding. EA0144R2 Mounting an Actuator to a Valve 0 1 6 6 3/8" (9.5 mm) MAX. TORQUE 40 lb-in (4.5 Nm) 7 Figure 15. Position the actuator to accommodate the wiring. Hold the actuator in place while tightening the retaining clamp. 0 1 2 EA0138R1 3/8" (9.
PAGE 4
Document Number: 129-185 Installation Instructions September 30, 2002 Wiring CAUTION: Use care when removing the knockout. Do not damage the circuit board. If possible, use the top knockout position. 3 4 EA0147R1 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 step-down transformer is 100 VA. Figure 18.
PAGE 5
Document Number: 129-185 Installation Instructions September 30, 2002 SKB/C62U Wiring for SKB/C82...U Non-Spring Return SKB82.50U, SKC82.60U Calib. Connection Terminals G0 G Y M U Z Status AC 24V 50/60Hz G 0 ... 10V G0 4 ... 20mA Chm Green Stroke Calibration Red Calib. Status OK CONTROLLER Calib.
PAGE 6
Document Number: 129-185 Installation Instructions September 30, 2002 Spring Return SKB82.51U and SKC82.61U continued 0 0 1 21 CONTROLLER Y2 Y1 Actuator pressure cylinder moves: • Outward (0 to 1): Valve closes. • Inward (1 to 0): Valve opens. Three-Way Valve 24 Vac Actuator pressure cylinder moves: • Outward: Valve opens between port NC and C. • Inward: Valve opens between ports NO and C. EA0745R1 EARTH GROUND ISOLATING CLASS 2 TRANSFORMER FOR 24 Vac POWER EA0225R3 N.O.
PAGE 7
Document Number: 129-185 Installation Instructions September 30, 2002 Manual Operation, continued SKB SKC 0 ACTUATOR PRESSURE CYLINDER 0 1 1 11/2" 40mm EA0155R1 3/4" 20mm Figure 30. Valve Stem Travel Indication. Dimensions 9" (228) 14" (335) 6" (152) 6" (152) 3-15/16" (99) 5" (127) 2-3/16" (55) EA0800R1 16-1/2" (420) Figure 31. SKB\C Weather Shield, 599-10065 in Inches (mm).
PAGE 8
Document Number: 129-185 Installation Instructions September 30, 2002 Dimensions, continued CAUTION: Be careful when removing the knockout. Do not damage the circuit board. Use the top knockout position. 1 0 5 (127) 51/2 (140) 31/2 (89) 31/2 (89) Ø7 (178) 513/32 (137) 91/4 (235) Ø EA0177R1 KNOCKOUTS FOR STANDARD 1/2" CONDUIT CONNECTOR 143/4 (375) 24mm Ø 10 or 14mm MINIMUM ACCESS SPACE REQUIRED SKB/SKC 4 (100) 8 (200) Ø 11/4 (44) 3 (76) Figure 32. SKB/SKC Dimensions in Inches (mm).