Technical Instructions Document No. 155-171P25 September 25, 2018 Flowrite™ 599 Series SKB/C Electronic Valve Actuator 24 Vac, 3-Position (Floating) Control 8Description The Flowrite 599 Series SKB/C electronic valve actuator requires a 24 Vac supply signal to provide three-position control. This actuator is designed to work with Flowrite 599 Series valves with 3/4-inch (20 mm) and 1-1/2-inch (40 mm) stroke.
Technical Instructions Document Number 155-171P25 September 25, 2018 Flowrite 599 Series SKB/C Electronic Valve Actuator 3-Position (Floating) Control Warning/Caution Notations WARNING: CAUTION: Specifications Power Supply Equipment rating Function Personal injury or loss of life may occur if you do not perform a procedure as specified. Equipment damage or loss of data may occur if you do not perform a procedure as specified. Operating voltage Frequency Power consumption SKB82.50U SKB82.51U SKC82.
Flowrite 599 Series SKB/C Electronic Valve Actuator 3-Position (Floating) Control Accessories Technical Instructions Document Number 155-171P25 September 25, 2018 NOTE: Installation instructions are included with each accessory. ASC9.3BCU The double auxiliary switch has adjustable cams that can be set to give a signal at a desired position of the stroke. Includes NEC Class I compliant wiring compartment cover. Switching capacity Figure 1. Double Auxiliary Switch. Figure 2. Stem Heating Element ASZ6.6.
Technical Instructions Document Number 155-171P25 September 25, 2018 Service Kits Flowrite 599 Series SKB/C Electronic Valve Actuator 3-Position (Floating) Control Manual override handle kit 4 268 5510 8 Plastic wiring compartment cover 4 104 5582 8 Stem retainer kit Contains one stem nut (Item 6, Figure 7) and one stem retainer clip. 2-1/2 and 3-inch valves 599-10048 4, 5, and 6-inch valves 599-10049 Retainer clamp kit 599-10200 Ultraviolet (UV) resistant cable ties (pkg.
Flowrite 599 Series SKB/C Electronic Valve Actuator 3-Position (Floating) Control Technical Instructions Document Number 155-171P25 September 25, 2018 Legend SKB/C Details 1. Pressure cylinder 2. Piston 3. Oscillating pump 4. Return spring 5. Bypass valve 6. Coupling piece (Stem nut) 7. Manual setting knob 8. Position indicator Figure 7. SKB/C Details. Mounting and Installation Figure 8. Mounting Positions.
Technical Instructions Document Number 155-171P25 September 25, 2018 Start-Up Flowrite 599 Series SKB/C Electronic Valve Actuator 3-Position (Floating) Control Check the wiring for proper connections. The valve body assembly determines the complete assembly action. Normally Closed Valve Actuator pressure cylinder moves outward (0 to 1): Valve opens. Actuator pressure cylinder moves inward (1 to 0): Valve closes. Normally Open Valve Actuator pressure cylinder moves outward (0 to 1): Valve closes.
Flowrite 599 Series SKB/C Electronic Valve Actuator 3-Position (Floating) Control Start-Up, Continued Technical Instructions Document Number 155-171P25 September 25, 2018 CAUTION: Do not attempt automatic operation of the actuator when the red scale is visible. Automatic Operation Figure 10. The Manual Setting Knob in Manual and Automatic Position. When returning to automatic control, you must turn the crank arm of the manual setting knob counterclockwise until the red numbers disappear.
Technical Instructions Document Number 155-171P25 September 25, 2018 Flowrite 599 Series SKB/C Electronic Valve Actuator 3-Position (Floating) Control Wiring Diagrams Non-spring Return SKB82.50U SKC82.60U Figure 11. Non-spring Return Wiring Diagrams. The diagram shows all possible connections. The application determines which connections are used.
Flowrite 599 Series SKB/C Electronic Valve Actuator 3-Position (Floating) Control Technical Instructions Document Number 155-171P25 September 25, 2018 Wiring Diagrams, Continued Spring Return SKB82.51U SKC82.61U Figure 12. Spring Return Wiring Diagrams. The diagram shows all possible connections. The application determines which connections are used.
Technical Instructions Document Number 155-171P25 September 25, 2018 Accessory Flowrite 599 Series SKB/C Electronic Valve Actuator 3-Position (Floating) Control System neutral (SN) red System potential (SP) black 24Vac/30W Figure 13. Stem Heating Element ASZ6.6. Troubleshooting • • • Check that the wires are connected correctly and attached securely. Check for adequate power supply. Check that the actuator is set for automatic operation. See the Start-Up section. Dimensions Figure 14.
Flowrite 599 Series SKB/C Electronic Valve Actuator 3-Position (Floating) Control Technical Instructions Document Number 155-171P25 September 25, 2018 Dimensions, Continued Figure 15. Dimensions of SKB/C in Inches (Millimeters). Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced. Flowrite is a registered trademark of Siemens Industry, Inc.
