Related Manuals for Flowserve Limitorque L120 Series
Summary of Contents for Flowserve Limitorque L120 Series
- Page 1 USER INSTRUCTIONS Limitorque Actuation Systems L120 Series Installation ® Operation For L120-10 through L120-40 Maintenance FCD LMENIM1201-05-A4 – 03/18 Experience In Motion...
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Page 2: Table Of Contents
Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 Contents Introduction Purpose User Safety Product Inspection - Storage - Identification Inspection and Recording Short-Term Storage (less than 1 year) Product Identification Actuator Weights Installation Instructions Safety Precautions Safety Practices Initial Actuator Preparation 4.3.1 Mounting Base 4.3.2... - Page 3 Declutch Assembly (L120-10) 6.9.2 Declutch Assembly (L120-20/40) (Refer to Figure 6.3) 6.9.3 Install the Motor (Refer to Figure 5.2) 6.9.4 Lubrication Procedure 6.9.5 Install Geared Limit Switch, Torque Switch and Finish Assembly How to Order Parts EC Declaration of Conformity flowserve.com...
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Page 4: Introduction
Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 Introduction Flowserve Limitorque actuators are available with a wide range of standard and optional features. Be aware of these features and their role in the setup and operation of the actuator. -
Page 5: Product Inspection - Storage - Identification
3. Replace all plastic caps or plugs with pipe plugs and ensure that all covers are tight. 4. If the actuator is mounted on a valve and the stem protrudes from the unit, a suitable stem cover must be provided. flowserve.com... - Page 6 Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 Figure 2.1 – L120-10 through 40 Handwheel Motor Actuator Nameplate (hidden) Declutch Lever Limit Switch/ Housing Controls Compartment...
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Page 7: Product Identification
• Run Torque • Enclosure Type • RPM • Volts • Full Load Amps • Locked Rotor Amps • Insulation Class • Duty • Horsepower • Service Factor • Phase • Cycles • Motor Code • Ambient Temperature • Connection Diagram flowserve.com... -
Page 8: Actuator Weights
Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 Actuator Weights The approximate L120 actuator weights are provided below: Table 3.1 – Actuator weights Drive 1 Weight (lb./kg) Drive 2 Weight (lb./kg) Actuator Control Types Top HW Side HW Top HW Side HW Size L120-10... -
Page 9: Installation Instructions
CAUTION: Do not depress the declutch lever during motor operation to stop valve travel. a CAUTION: Do not use replacement parts that are not genuine Flowserve Limitorque parts, as serious personal injury and/or damage to the actuator and valve may result. -
Page 10: Safety Practices
Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 4.2 Safety Practices The following checks should be performed to maintain safe operation of the L120 actuator. • Mount motors on a horizontal plane, if possible. • Keep the controls compartment clean and dry. •... -
Page 11: Torque Switch
Figure 4.1 – Microswitch-Style Torque Switch and 300 Volt Torque Switch Maximum Stop Maximum Stop Setting Plate Setting Plate Balancing Balancing Screws Screws Mounting Mounting Index Marks Index Marks Screw Screw Microswitch-Style Torque Switch 300 Volt Torque Switch flowserve.com... -
Page 12: Balancing Torque Switch
Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 4.4.2 Balancing Torque Switch Item letters correspond to Figure 4.1. 1. Place the actuator in manual mode. 2. Remove the load from the wormshaft spring pack. 3. Note the open and close torque switch settings prior to reinstalling the torque switch. 4. -
Page 13: Setting Procedure (Refer To Figure 4.2)
7. Operate the valve by handwheel to fully “close” position; reverse direction by one turn of the hand- wheel to allow for coast of moving parts or refer to the valve manufacturer setting requirements. 8. Set the other rotors by following Steps 4 through 6. flowserve.com... -
Page 14: Combination Of Contacts (Refer To Figure 4.2)
Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 Figure 4.3 – Setting the open and closed contacts Closed Open position position 4.5.3 Combination of Contacts (Refer to Figure 4.2) The rotor segments can be separated and rotated through 90 degrees to give various combinations of normally open or normally closed contacts to each rotor. -
Page 15: Remote Position Indication
8. Calibrate SPAN position by adjusting the span potentiometer until a 20 mA output signal is read at terminals +VE and -VE. 9. Repeat steps 5 to 8 and fine-tune as necessary. Figure 4.4 – 1000 ohm Potentiometer 1000 ohms Gearing Receiver DC Power Supply Customer Equipment Typical Connection for a 1000 ohm Potentiometer flowserve.com... -
Page 16: Optional Side-Mounted Handwheel
Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 4.7 Optional Side-Mounted Handwheel For actuator sizes L120-10, 20, and 40, the handwheel can be mounted on the side as shown in the following figures. Figure 4.5 – L120-10 parts list, attachment ratio 4.2:1 178 &... - Page 17 Grease Fitting Handwheel Hex Head Cap Screw Lockwasher Note: Apply Loctite 601/609 158-1 to ID of Bearing Cap Retaining Washer 158-2 182-1 Handwheel Spinner 158-3 158-4 182-2 Socket Head Cap Screw 182-3 Hex Jam Nut 6 42-11 150 151 flowserve.com...
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Page 18: Limitorque Actuation Systems L120 Series Fcd Lmenim1201-05-A4
Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 Figure 4.7 – L120-40 with side-mounted handwheel and parts list, attachment ratio 12:1 182-2 & 178 181 180 182-1 Piece Quantity Description 182-3 Housing Cover Shim 42-11 O-ring / Handwheel Mounting Quad Ring 157-3 Pipe Plug... -
Page 19: Operation
5. Turn on power supply and push button to “open.” 6. Check output rotation: • If phase rotation is correct, the valve should begin to open. • If valve begins to CLOSE, STOP immediately. Incorrect phase rotation will lead to serious damage if the valve seats. flowserve.com... -
Page 20: Manual Operation
Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 7. Correct the phase rotation one of two ways: • Switch any two of the three power leads for three-phase power, or • Reverse the armature leads for single-phase or DC power. The actuator should operate correctly and will be stopped at the end of travel positions by torque or limit switch functions. - Page 21 POSITION FULL OPEN, FULL CLOSED OR ANY SPARE CERTIFICATION SHEET IF SUPPLIED) POSITION IN BETWEEN AS INDICATED BY SPARE RES-LAMP RESISTORS˛ POINTS A AND B. INT.2 SPARE 5. ADD JUMPER ON LS#8 BETWEEN TERMINALS (8 ) SPARE & (8C) FOR TORQUE-SEATING VALVES. flowserve.com...
- Page 22 Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 Figure 5.1 (two of two) – L120-10 through 40 typical wiring diagram MOTOR REVERSING STARTER TH.OL GRN/WHT MTR HTR (NOTE#3) PRIMARY ELEC YEL/WHT SECONDAR Y BLU/WHT MOTOR GROUND LUG FUSE SW323 PUSHBUTTON STATION OPEN BLU/RED FOR SIGNAL...
- Page 23 Worm Gear Spirolox Retainer 42/11 Declutch Spring Drive Sleeve Handwheel Adapter Piece Quantity Description Housing Cover Retaining Ring Handwheel Handwheel Cover Plate Handwheel Cover Plate Gasket 42/11 O-ring / Handwheel Mounting Quad Ring Quad Ring Hardware * Not shown flowserve.com...
- Page 24 Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 Figure 5.2 (two of two) – L120-10 through 40 parts breakdown 42/7* 42/11 42/3 42/6 42/5 42/9 Piece Quantity Description Piece Quantity Description Housing Motor Pinion Motor Adapter Electrical Compartment Stop Nut Seal Retainer Washer Worm Shaft End Cap...
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Page 25: Motor Operation
Each pack is precalibrated and hence a finite compression represents a finite torque output. Movement of the worm operates the torque switch, which interrupts the power to the motor. The torque switch is adjustable and can be set to operate at predetermined torque levels. flowserve.com... -
Page 26: Maintenance
Once the equipment is operating on a regular basis, the weeping should stop. 6.1.1 Lubrication Inspection Inspect Limitorque L120 series actuators for correct lubrication prior to operating - particularly following a long storage period. Each application has its own effect on the actuator and the frequency of these inspections should be based on the application and the operating experience. -
Page 27: Factory Lubricant
• not contain any grit, abrasive, or fillers. • comply with a slump-prefer NLGI-0 grade. • not be corrosive to steel gears, ball, or roller bearings. • have a dropping point above 316°F (158°C) for temperature ranges of -20°F (-29°C) to +250°F (+121°C). flowserve.com... -
Page 28: Disassembly And Reassembly
Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 6.3 Disassembly and Reassembly a CAUTION: Turn off all power services before attempting to perform service on the actuator. • Remove the actuator from the valve for complex work. Minor work, such as replacing geared limit switch, torque switch, or motor, may be readily performed while the actuator is still on the valve. -
Page 29: Drive Sleeve And Housing Cover Disassembly
Unless otherwise stated, piece numbers refer to Figure 6.1. Standard Drive Sleeve To remove the Torque Nut (piece 95), remove Retaining Ring (piece 183) and drop the torque nut out the bottom of the Drive Sleeve (piece 25 of Figure 5.2). flowserve.com... -
Page 30: Thrust Base Disassembly (Drive 2 Option)
Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 Optional Drive Sleeve 1. Remove the Handwheel (piece 29 of Figure 5.2), Handwheel Cover Plate (piece 33 of Figure 5.2) and Gasket (piece 34) to provide access to the Elastic Stop Nut (piece 99). 2. -
Page 31: Reassembly
6. Insert Wormshaft Assembly (piece 15) into the housing and locate the bearings in the housing journals. Replace the Wormshaft Cap (piece 5). 7. Install the Wormshaft Gear (piece 35) and Flex Loc Nut (piece 37). NOTE: It is recommended that a new flex loc nut be used during reassembly. flowserve.com... -
Page 32: Declutch Assembly (L120-10)
Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 Figure 6.3 – L120-10 through 40 declutch assembly parts breakdown Declutch Stop & 42/5 Declutch Stop 42/5 & L120-20/40 L120-10 Piece Quantity Description Declutch Shaft Assembly L120-20/40 Declutch Shaft Assembly Declutch Actuator Declutch Actuator 7-2 &... -
Page 33: Install The Motor (Refer To Figure 5.2)
NOTE: The limit switch must be reset before the actuator is placed back into service. The Torque Switch may need to be rebalanced. If required see Section 4.4.2, Balancing Torque Switch. 2. Connect all electrical leads in the switch compartment. 3. Replace the compartment cover, handwheel and thrust base, if applicable, to complete the assembly. flowserve.com... -
Page 34: How To Order Parts
Limitorque Actuation Systems L120 Series FCD LMENIM1201-05-A4 – 03/18 How to Order Parts To order parts or obtain further information about your Limitorque L120 valve actuators, contact your local Flowserve Limitorque distributor sales office, or: Flowserve Limitorque 5114 Woodall Road... -
Page 35: Ec Declaration Of Conformity
Limitorque Actuation Systems L120 Series FCD LMENIM1201-04-A4 – 03/18 EC Declaration of Conformity Application of Council Directives Importer’s Address 2004/108/EC; EMC Directive Flowserve Limitorque Euro House 2006/42/EC; Machinery Directive Abex Road Newbury 2003/10/EC; Airborne Noise Directive Berkshire, RG14 5EY Standards to which Conformity is Declared United Kingdom Machinery;... - Page 36 Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, this Flowserve product is designed to perform its intended function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used in numerous applications under a wide variety of industrial service conditions.
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