Experience In MotionUSER INSTRUCTIONSLimitorque L120-190 through L120-2000FCD LMENIM1203-00 – 10/11Installation Operation Maintenance
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/1110The approximate L120 actuator weights are provided below:Table 4.1 – Actuator Weigh
11Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.com5.1 Safety Precautions c WARNING: Read this Installation and Maintenan
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/1112 c WARNING: Actuators equipped with electrical devices (motors, controls) requiring
13Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.com5.3.1 Mounting BaseThe mounting hole sizes and quantities are as detai
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/1114 a CAUTION: Disconnect all incoming power before opening limit switch compartment o
15Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.com5.4.2 Balancing Torque SwitchItem letters correspond to Figure 5.2.1.
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/1116Table 5.3 – Terminal Dimensions By Cable SizeAWG Screw Hole InsulationThomas &
17Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.comTable 5.4 – Maximum Drive Sleeve TurnsLimit Switch Gearing PIC GearingA
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/1118Figure 5.5 – Setting Geared Limit SwitchUnless otherwise noted part numbers refer t
19Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.com NOTE: The cross-slotted shafts A, B, C, and D have been designed for u
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/112
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/1120To set the local position indicator:1. Disconnect all incoming power and remove
21Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.com6 Operation c WARNING: See Sections 5.1 and 5.2 Safety Precautions and
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11226. Check output rotation:• If phase rotation is correct, the valve should begin
23Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.com6.3 Motor OperationThe actuator is always available for motor operatio
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11247.1 LubricationThe L120 series actuators have a totally sealed gear case, factory-
25Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.com• Consistency – Ensure the lubricant is fluid approximating a standard
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11268 Disassembly and Reassembly c WARNING: See sections 5.1 and 5.2 Safety Precautions
27Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.comPiece numbers refer to Figures 8.1, 8.2 and 8.3 for L120-190 and -420,
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/112812. Lift complete drive sleeve assembly from actuator housing. The drive sleeve as
29Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.com5. For worm, rotate Worm Shaft Clutch (piece #33) to engage splines on
3Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.comContents1 Introduction 51.1 Purpose 51.2 User Safety 52 Produc
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/1130Figure 8.1 – L120-190 and -420 Drive Sleeve Side View (Refer to Table 8.1 for parts
31Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.comFigure 8.2 – L120-190-and 420 Worm Shaft Side View (Refer to Table 8.1
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/1132Figure 8.3 – L120-190 and -420 Top View (Refer to Table 8.1 for parts list)12434-A
33Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.comFigure 8.4 – L120-800 Drive Sleeve Side View (Refer to Table 8.1 for pa
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/1134Figure 8.5 – L120-800 Worm Shaft Side View (Refer to Table 8.1 for parts list)56-9
35Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.comFigure 8.6 – L120-800 Top View (Refer to Table 8.1 for parts list)Drawi
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/1136Table 8.1 – L120-190, -420 and -800 typical parts listPiece No. Quantity Descriptio
37Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.comTable 8.1 Continued – L120-190, -420 and -800 typical parts listPiece N
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11388.2 L120-2000 c WARNING: See sections 5.1 and 5.2 Safety Precautions and Safety Pr
39Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.com8. Using lifting eyebolts, remove Housing Cover (piece #3), Drive Sle
4Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/119 Standard Wiring Diagrams 4910 Troubleshooting 5211 How to Order Parts 5312
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/114021. Remove bearing cartridge/worm assembly from actuator. To disassemble further:A
41Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.com13. Re-install declutch housing as follows:A. Install Spirolox Ring (
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/114228. Install Clutch Tripper (piece #34-A, 34-B) and Tripper Spring (piece #58).29.
43Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.comFigure 8.7 – L120-2000 Drive Sleeve Side View (Refer to Table 8.2 for p
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/1144Figure 8.8 -L120-2000 Top View (Refer to Table 8.2 for parts list)83861118254-14173
45Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.comFigure 8.9 – L120-2000 Side View (Refer to Table 8.2 for parts list)Dra
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/1146Figure 8.10 - L120-2000 Exploded ViewDrawing 08-408-0002-4
47Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.comTable 8.2 - L120-2000 typical parts listPiece No. Quantity Description
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/1148Table 8.2 Continued - L120-2000 typical parts listPiece No. Quantity Description Pi
49Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.comFigure 9.1 – Wiring Diagram – No ControlsMOTORCL1418 18C81717C(18)(18C
5Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.com1.1 Purpose This Installation and Maintenance Manual explains how to in
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/1150Figure 9.2 – Wiring Diagram – Integral Controls73(7) (7C)(3) (3C)TB2-2RG3-63-3(18)
51Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.comFigure 9.3 – Wiring Diagram – NCUWHTBLK00000 0 30 00ELECTRICAL COMPART
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/1152Problem CheckGeared limit switch fails to stop valve travel.A. Control wiring and m
53Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.comTo order parts or obtain further information about your Limitorque L120
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/115412 Regulatory InformationApplication of Council Directive(s)89/336/EC; EMC Directiv
55Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.comThis page intentionally left blank.
flowserve.comTo find your local Flowserve representative:For more information about Flowserve Corporation, visit www.flowserve.com or call USA 1 800 22
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/116L120 Series actuators operate without modification in any rising or non-rising stem a
7Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.com c WARNING: Read this Installation and Maintenance Manual carefully and
Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/118Figure 3.1 – L120-190 through 20003.2 Inspection and RecordingUpon receipt of the a
9Limitorque® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11flowserve.com1. Position the actuator in storage with motor and switch compartment h
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