Woodward L-Series Installation And Operation Manual
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Summary of Contents for Woodward L-Series
- Page 1 Released Product Manual 35144 (Revision -, 07/2019) Original Instructions L-Series ITB / LC-50 RoHS Compliant Installation and Operation Manual...
- Page 2 Revisions— A bold, black line alongside the text identifies changes in this publication since the last revision. Woodward reserves the right to update any portion of this publication at any time. Information provided by Woodward is believed to be correct and reliable. However, no responsibility is assumed by Woodward unless otherwise expressly undertaken.
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Page 3: Table Of Contents
Released Manual 35144 L-Series ITB / LC-50 RoHS Compliant Contents ................3 ARNINGS AND OTICES ..........4 LECTROSTATIC ISCHARGE WARENESS ............... 5 EGULATORY OMPLIANCE 1. G ............7 HAPTER ENERAL NFORMATION Purpose and Scope ....................7 Intended Applications ..................... 7 L-Series Description .................... - Page 4 L-Series ITB / LC-50 RoHS Compliant Illustrations and Tables Figure 1-1. Cv vs Angle for L-Series ITBs .............. 9 Figure 1-2. Cv vs Angle for L-Series Trim Valves ..........10 Figure 2-1. Application Matrix ................11 Figure 3-1. Spring-Loaded Throttle Plate ............. 15 Figure 3-2.
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Page 5: Warnings And Notices
Released Manual 35144 L-Series ITB / LC-50 RoHS Compliant Warnings and Notices Important Definitions This is the safety alert symbol used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death. -
Page 6: Electrostatic Discharge Awareness
Do not touch the components or conductors on a printed circuit board with your hands or with conductive devices. To prevent damage to electronic components caused by improper handling, read and observe the precautions in Woodward manual 82715 , Guide for Handling and Protection of Electronic Controls, Printed Circuit Boards, and Modules. -
Page 7: Regulatory Compliance
Council of 26 February 2014 on the harmonization of the laws of the Member States relating to electromagnetic compatibility (EMC). These listings are limited only to those L-Series ITB Control units (not mixers) bearing the ATEX markings as well as the CE Mark (8404-7226, 8404-7227 only):... - Page 8 Released Manual 35144 L-Series ITB / LC-50 RoHS Compliant Connect ground terminal to earth ground. The actuator should be protected from exposure to sunlight and rain. EXPLOSION HAZARD—Do not connect or disconnect while circuit is live unless area is known to be non-hazardous.
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Page 9: Chapter 1. General Information
The L-Series ITB incorporates the Woodward L-Series control with a throttle plate. The LC-50 adds a venturi-style annular ring mixer to the L-Series ITB. -
Page 10: Determining Proper Valve Size
Released Manual 35144 L-Series ITB / LC-50 RoHS Compliant Determining Proper Valve Size The proper valve size can be determined using the equation below. The required Cv (Flow Coefficient) should be calculated for both the minimum and maximum flows expected on the application. This design allows for 80 degrees of throttle plate rotation. -
Page 11: Figure 1-1. Cv Vs Angle For L-Series Itbs
Manual 35144 L-Series ITB / LC-50 RoHS Compliant Figure 1-1. Cv vs Angle for L-Series ITBs The proper valve size can be determined using the equation below. The required Cv (Flow Coefficient) should be calculated for both the minimum and maximum flows expected on the application. This design allows for 60 degrees of throttle plate rotation. -
Page 12: Figure 1-2. Cv Vs Angle For L-Series Trim Valves
Released Manual 35144 L-Series ITB / LC-50 RoHS Compliant Figure 1-2. Cv vs Angle for L-Series Trim Valves Woodward... -
Page 13: Chapter 2. Application Overview
ITB, a mixer, and a version of the actuator must be selected. The ITBs and mixers come in five different sizes. For both the L-Series ITB and LC-50, the user must choose the appropriately sized ITB for the application. The chart below illustrates how to choose the proper size. The intersection of the operating rpm and the engine displacement will fall within a specific ITB band. - Page 14 A/F ratio control, an L-Series O sensing A/F ratio trim valve is available separately as a replacement for the MAS. The LC-50 Mixer fuel inlet connection is designed to match the L-Series trim valve bolt pattern. For more information, refer to product specification 03255.
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Page 15: Chapter 3. Installation
Field wiring must be suitable for at least 105 °C. Connect ground terminal to earth ground. The L-Series is used on prime movers that typically have a high noise level. Always use appropriate hearing protection while working around the L-Series. -
Page 16: Mechanical Installation
Zone 2. Mechanical Installation Locate the L-Series control a distance from sources of extreme radiant heat, such as exhaust manifolds or turbochargers. The operating temperature range of the control is –40 to +105 °C (–40 to +221 °F). In spark-ignited applications, make sure the control is located away from the ignition coil, and that harness wires are not routed next to the spark plug wires. -
Page 17: Figure 3-1. Spring-Loaded Throttle Plate
43 and 50 mm ITBs, order gasket part number 0108-00-021. The L-Series actuator has a rotation of 0–60 degrees. To get full blade rotation on the ITB, a mechanical linkage exists inside the ITB that converts 0 to 60 degrees actuator rotation to 3 to 85 degrees blade position. - Page 18 The LC-50 mixer can be mounted in any of three orientations of the ITB to allow convenient fuel system connections. The L-Series ITB and LC-50 are intended to be used with gaseous fuels from low quality pipeline natural gas to HD-5 LPG. The quality of this range of fuel varies from a lower heating value of 850 BTU/SCF (34.0 MJ/m³) to 2325 BTU/SCF (93.0 MJ/m³), and the specific gravity varies from 0.55 to...
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Page 19: Figure 3-2. L-Series Itb Outline Drawings
Released Manual 35144 L-Series ITB / LC-50 RoHS Compliant Figure 3-2. L-Series ITB Outline Drawings Woodward... -
Page 20: Figure 3-3A. Lc-50 Outline Drawing (Small Bore)
Released Manual 35144 L-Series ITB / LC-50 RoHS Compliant Figure 3-3a. LC-50 Outline Drawing (small bore) Woodward... -
Page 21: Figure 3-3B. Lc-50 Outline Drawing (Large Bore)
Released Manual 35144 L-Series ITB / LC-50 RoHS Compliant Figure 3-3b. LC-50 Outline Drawing (large bore) Woodward... -
Page 22: Applications (Mixer Applications)
Released Manual 35144 L-Series ITB / LC-50 RoHS Compliant On a turbo-charged engine, the mixer should be located before the turbo compressor. This will yield very high mixture homogeneity as well as allowing the use of a standard ZPR and the ability to use low-pressure gas. To increase safety, some engine manufacturers have mounted flame arrestors between the inlet manifold and the cylinder head, ensuring that a backfire does not lead to an explosion in the inlet manifold, aftercooler, etc., which... -
Page 23: Figure 3-4. Zirconia Oxygen Sensor Response
Released Manual 35144 L-Series ITB / LC-50 RoHS Compliant Air/Fuel Ratio Tuning 1. Insert an oxygen sensor or exhaust gas analyzer into the exhaust stream as directed by the manufacturer of the sensor or analyzer. 2. Start the engine and allow it to warm up for about 15 minutes. -
Page 24: Chapter 4. Troubleshooting
For more detailed information about governor system failure modes and effects, contact Woodward for a copy of the system DFMEA. The troubleshooting scenarios listed below assume that the application has been engineered and tested thoroughly. -
Page 25: Chapter 5 Product Support And Service Options
An Authorized Independent Service Facility (AISF) provides authorized service that includes repairs, repair parts, and warranty service on Woodward's behalf. Service (not new unit sales) is an AISF's primary mission. A Recognized Engine Retrofitter (RER) is an independent company that does retrofits and... -
Page 26: Returning Equipment For Repair
To prevent damage to electronic components caused by improper handling, read and observe the precautions in Woodward manual 82715, Guide for Handling and Protection of Electronic Controls, Printed Circuit Boards, and Modules. -
Page 27: Engineering Services
Field Service engineering on-site support is available, depending on the product and location, from one of our Full-Service Distributors. The field engineers are experienced both on Woodward products as well as on much of the non-Woodward equipment with which our products interface. -
Page 28: Technical Assistance
L-Series ITB / LC-50 RoHS Compliant Technical Assistance If you need to contact technical assistance, you will need to provide the following information. Please write it down here before contacting the Engine OEM, the Packager, a Woodward Business Partner, or the Woodward factory: General... -
Page 29: L-Series Itb Specifications
Reliability and Quality Goals The L-Series control system has a reliability target of 17 500 hours MTBF. It also has a quality goal of less than 25 PPM when measuring out-of-the-box defects. This quality goal is a target based on continuous improvement. -
Page 30: Appendix . Acronyms /Abbreviations
L-Series ITB / LC-50 RoHS Compliant Appendix. Acronyms/Abbreviations air/fuel ratio integrated throttle body LC-50 Woodward system that incorporates L-Series with an ITB and mixer manifold air pressure main adjustment screw original equipment manufacturer Stoichiometric chemically balanced air/fuel ratio zero pressure regulator... -
Page 31: Revision History
Released Manual 35144 L-Series ITB / LC-50 RoHS Compliant Revision History New Manual— Woodward... -
Page 32: Declarations
Released Manual 35144 L-Series ITB / LC-50 RoHS Compliant Declarations Woodward... - Page 33 Released Manual 35144 L-Series ITB / LC-50 RoHS Compliant Woodward...
- Page 34 Email and Website—www.woodward.com Woodward has company-owned plants, subsidiaries, and branches, as well as authorized distributors and other authorized service and sales facilities throughout the world. Complete address / phone / fax / email information for all locations is available on our website.
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