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Summary of Contents for Limitorque WTR Series
- Page 1 WTR Series Installation & Maintenance for 330-15000 Revision A WTR-3 through WTR-575 October 2002...
- Page 3 WTR Series Installation & Maintenance for WTR-3 through WTR-575...
- Page 4 If there is any doubt as to exact installation, configuration, and/or use, call Limitorque Corporation‚ at (804) 528-4400.
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Page 5: Table Of Contents
WTR Series Table of Contents Table of Contents 1 Introduction 1.1 Purpose 1.2 User Safety 2 Product Capabilities and Features 2.1 Initial Inspection and Storage Instructions 2.2 Product Identification 2.3 Inspection and Recording 2.4 Storage Procedure 3 Unit Weights 4 Installation Instructions 4.1 Safety Precautions... - Page 6 Figures / Tables Figures Figure 2.1 – WTR gearbox Figure 2.2 – WTR nameplates Figure 4.1 – WTR Splined Adapter removal Figure 4.2 – Worm gear quadrant adjusted to contact with mechanical stops to set mechanical stop screw position Figure 6.1 – WTR with SGA parts breakdown (3 through 150) 6-1, 6-2 Figure 6.2 –...
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Page 7: Introduction
WTR Series Introduction Introduction Purpose This Installation and Maintenance Manual explains how to install and maintain the WTR actuator. Information on installation, disassembly, lubrication, and spare parts is provided. User Safety Safety notices in this manual detail precautions the user must take to reduce the risk of personal injury and damage to the equipment. - Page 8 This page is intentionally blank. WTR Installation & Maintenance Manual 330-15000 • Revision A • August...
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Page 9: Product Capabilities And Features
WTR Series Product Capabilities and Features Product Capabilities and Features WTR series worm gear actuators are designed to operate Designed to operate 90° applications valves or other applications that require 90° operation such as butterfly, ball, and plug valves. with a handwheel or 2" nut, or electrically operated with an added Can be hand-operated motorized actuator. -
Page 10: Product Identification
2. A nameplate is attached to each actuator with the following information: • Unit Size • Limitorque Order Number • Customer Tagging • Unit Ratio (includes WTR SGA if attached to unit - does not include motorized actuator ratios) Record this information for future reference, i.e., ordering parts, obtaining further... -
Page 11: Storage Procedure
WTR Series Product Capabilities and Features Storage Procedure NOTE: The following is our recommended storage procedure to retain maximum product integrity during storage. Failure to comply with recommended procedure will void the warranty. Storage (less than 1 year) Store actuators on wooden skids to protect the machined mounting flange. Place the wooden skids containing the actuators in a clean, dry, protected warehouse. - Page 12 This page is intentionally blank. WTR Installation & Maintenance Manual 330-15000 • Revision A • August...
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Page 13: Unit Weights
WTR Series Unit Weights Unit Weights The approximate weights of the WTR actuators, with and without Spur Gear Attachments (SGA), are provided below. Table 3.1 – Unit weights Commercial Unit Size/SGA AWWA Unit Size/SGA WTRC-3 WTRC-5 WTRC-10 WTRA-12 WTRC-15 WTRA-21 WTRC-15/S1.7... - Page 14 This page is intentionally blank. WTR Installation & Maintenance Manual 330-15000 • Revision A • August...
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Page 15: Installation Instructions
Safety Precautions a WARNING: Read this Installation and Maintenance Manual carefully and completely before attempting to install, operate, or troubleshoot the Limitorque WTR actuator. Be aware of electrical hazards if an electric actuator is attached to the WTR manual actuator. Be aware of high-pressure hazards associated with the attached valve or other actuated device when installing or performing maintenance on your WTR actuator. -
Page 16: Prepare Actuator
Installation Instructions Prepare Actuator 1. Remove the Splined Adapter from the bottom of the actuator. (See Figure 4.1 below.) NOTE: The valve manufacturer is responsible for assuring that the Splined Adapter is retained within the WTR actuator. Retaining the Splined Adapter is accomplished by ensuring the Valve/Actuator Mounting Flange is sized to retain the Splined Adapter or by using the Setscrew that is threaded through the Splined Adapter. -
Page 17: Table 4.1 - Splined Adapter Custom Bore And Keyway Sizes
3. If the Splined Adapter has not been bored and keyed by Limitorque, it is provided solid or with a minimum pilot bore. Custom bore and key to the maximum permissible sizes as listed in Table 4.1. -
Page 18: Installing Wtr-3 Through 150
Installation Instructions Installing WTR-3 through 150 CAUTION: If your actuator is already mounted to a valve from the manufacturer, verify that the actuator is mounted according to the following instructions. Failure to follow the installation procedures could result in personal injury or improper operation and could damage the equipment. -
Page 19: Installing Wtr-430 Through 575
WTR Series Installation Instructions Installing WTR-430 through 575 CAUTION: If the actuator is already mounted to a valve from the manufacturer, verify that the actuator is mounted according to the following instructions. Failure to follow the installation procedures could result in personal injury or improper operation and could damage the equipment. -
Page 20: Setting The Mechanical Stops On The Wtr
WTR Series Installation Instructions Setting the Mechanical Stops on the WTR • If the WTR is shipped already installed on the valve, the Mechanical Stops should be set. • If the WTR is not installed on the valve, the Mechanical Stops must be set after mounting. - Page 21 Installation Instructions 4. Re-tighten Locking Nut (piece #14/#23) to secure the Mechanical Stop Screw. Set OPEN Mechanical Stop: 1. Setscrew (piece #13/#22): loosen the Locking Nut (piece #14/#22, 23); back off the Mechanical Stop Setscrew (piece #13/#22) to allow the valve to travel to the fully OPEN position.
- Page 22 WTR Series This page is intentionally blank. WTR Installation & Maintenance Manual 330-15000 • Revision A • August...
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Page 23: Maintenance
Maintenance Lubrication The WTR series actuators have a totally sealed gear case, factory-lubricated with grease. No seal can remain absolutely tight at all times. Therefore, it is not unusual to find a very small amount of weeping around shaft seals—especially during long periods of idleness such as storage. -
Page 24: Minimum Lubricant Qualities Required
13.0 Minimum Lubricant Qualities Required The standard lubricants used by Limitorque have been proven to be extremely reliable over years of service. Limitorque does not recommend a particular lubricant substitute for the standard lubricants; however, Limitorque does require the following lubricant qualities as a minimum. -
Page 25: Disassemble Wtr-3 Through 150
WTR Series Maintenance 5.3.1 Disassemble WTR-3 through 150 Piece numbers refer to the Illustrated Parts Breakdown of Figure 6.1. Remove the Drive Sleeve 1. Remove Hex Head Cap Screws (piece #19) and Spring Washers (piece #20); lift Pointer Cap (piece #5) from Drive Sleeve (piece #4). -
Page 26: Disassemble Wtr-430 Through 575
WTR Series Maintenance 5.3.5 Disassemble WTR-430 through 575 5.3.5.1 Disassemble SGA Piece numbers refer to Figure 6.2. 1. Remove the Key (piece #11) from the Input Pinion (piece #23). 2. Remove the Housing Cover (piece #21) by removing the Cap Screws (piece #15). -
Page 27: Parts Breakdown
WTR Series Parts Breakdown Parts Breakdown Figure 6.1 (1 of 2) – WTR with SGA parts breakdown (3 through 150) Piece Description Quantity WTR Housing WTR Housing Base WTR Housing Cover Drive Sleeve Use only with Pointer Cap Bronze gear... - Page 28 WTR Series Parts Breakdown Figure 6.1 (2 of 2) – WTR with SGA parts breakdown (3 through 150) Piece Quantity Description Spur Gear Housing Housing Cover Input Shaft & Pinion Output Spur Gear Idler Gear Idler Bushing Cover Gasket Housing Gasket...
- Page 29 WTR Series Parts Breakdown Figure 6.2 (1 of 2) – WTR with SGA parts breakdown (430 through 575) WTR-575 Stop Arrangement Piece Quantity Description Piece Quantity Description Housing Housing Cover Stop Screw Wormshaft 23*** Hex Nut Drive Sleeve 23A** Pointer Cap...
- Page 30 WTR Series Parts Breakdown Figure 6.2 (2 of 2) – WTR with SGA parts breakdown (430 through 575) Piece Quantity Description Piece Quantity Description Piece Quantity Description Housing Output Gear Cover Lockwasher Input Pinion Wormshaft Lockwasher Output Gear Lockwasher Bushing...
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Page 31: How To Order Parts
WTR Series How to Order Parts How to Order Parts To order parts or obtain further information for your Limitorque WTR actuators, contact your local Limitorque distributor, sales office, or: Limitorque Corporation 5114 Woodall Road P.O. Box 11318 Lynchburg, VA 24506-1318... - Page 36 Australian Distributor for Limitorque Acrodyne Pty Ltd 14/11 Havelock Road Bayswater, Victoria 3153 Australia Phone 03-8727-7800 Fax 03-9729-8699...
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