Flowserve Limitorque L120-85 Manual de usuario
Experience In Motion
USER INSTRUCTIONS
Installation
Operation
Maintenance
Limitorque
®L120-85 Actuator
FCD LMENIM1202-03-A4 – 06/15
Limitorque L120-85 Installation, Operation and Maintenance FCD LMENIM1202-03-A4 – 06/15
2
1 Introduction 4
1.1 Purpose 4
1.2 User Safety 4
2 Initial Inspection and Storage Instructions 5
2.1 Inspection and Recording 5
2.2 Short-Term Storage 5
2.3 Product Identification 6
2.4 Product Description 7
2.5 Product Features 7
3 Actuator Weight 8
4 Installation Instructions 9
4.1 Actuator Mounting 9
4.1.1 Torque Only Applications (Drive 1) 10
4.1.2 Torque and Thrust Applications (Drive 2) 10
4.1.3 Mounting Bolts 11
4.1.4 Stem Cover for Rising Stem Applications 11
4.2 Verifying Motor Rotation Direction 13
4.2.1 Initial Electrical Connections 13
4.2.2 Motor rotation (phasing) and OPEN/CLOSE
pushbutton operation. 14
4.2.3 Three-Phase Motor 14
4.2.4 DC Motor 15
4.3 Limit Switch Settings 15
4.3.1 Basic Theory of Operation 16
4.3.2 Adjustment—General 17
4.3.3 Setting the OPEN Limit Switch 17
4.3.4 Setting the CLOSE Limit Switch 19
4.4 Torque Switch Setting and Wiring 20
4.4.1 Basic Theory of Operation 20
4.4.2 Setting the Torque Switch 20
4.4.3 Balancing the Torque Switch 21
4.4.4 Rewiring the Torque Switch
for Non-Standard Drive Sleeve Rotation 21
4.5 Position Indication 21
4.5.1 Local Position Indication 21
4.5.2 Remote Position Indication 23
4.5.3 Setting the Potentiometer 24
5 Operation 26
5.1 Description of Motor Operation 26
5.2 Description of Manual Operation 26
5.3 Electrical Start-up Procedure 27
6 Maintenance 28
6.1 Lubrication 28
6.1.1 Initial Inspection 28
6.1.2 Frequency 28
6.1.3 Routine Inspection 28
6.1.4 Factory Lubricants 29
6.1.5 Minimum Lubricant Qualities Required 29
7 Disassembly 30
7.1 Removal From Valve 30
7.2 Open Electrical Compartment and Disconnect Motor 30
7.3 Remove Control Wiring 31
7.4 Remove Limit and Torque Switch 31
7.5 Remove Motor Assembly 31
7.6 Remove Handwheel 31
7.7 Remove Handwheel Shaft Assembly 31
7.8 Remove Declutch Lever Assembly 32
7.9 Remove Clutch Assembly 32
7.10 Remove Clutch Pinion Assembly 32
7.11 Remove Worm Shaft Assembly 32
7.12 Remove and Disassemble Thrust Base 33
7.13 Remove Drive Sleeve 33
8 Assembly 34
8.1 Handwheel Shaft Assembly and Shimming 34
8.2 Verifying Handwheel Operation 38
8.3 Thrust Base Assembly and Shimming 38
9 Troubleshooting 39
9.1 Typical Wiring Diagram 41
Three-phase with Control Package 37
10 How to Order Parts 42
10.1 L120-85 Illustrated Parts Breakdown 43
10.2 L120-85 Parts List 48
11 Regulatory Information 50
Contents
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Limitorque L120-85 Installation, Operation and Maintenance FCD LMENIM1202-03-A4 – 06/15
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Figures
Figure 1: Limitorque L120-85 Actuator 7
Figure 2: L120-85 Torque Drive Nut and Retaining Ring Details 10
Figure 3: Thrust Base removal from an L120-85 10
Figure 4: L120-85 Torque Drive Nut orientation (Drive 1) 12
Figure 5: L120-85 Thrust Base Assembly orientation (Drive 2) 12
Figure 6: Electrical Compartment and Conduit Pipe Plug openings 14
Figure 7: Grounding Lug location 14
Figure 8: Limit Switch Rotor development 15
Figure 9: L120-85 Limit Switch Components 17
Figure 10: Limit Switch OPEN/CLOSED Rotor Cam orientation 18
Figure 11: Torque Switch Components 20
Figure 12: Reversing Torque Switch wiring 21
Figure 13: Aligning MDPI Pointer for Fully CLOSED Position 21
Figure 14: Remote Position Indicator Calibration Configuration 24
Figure 15: Potentiometer Calibration configuration 24
Figure 16: Loosening Potentiometer Assembly 25
Figure 17: Removing Clutch Pinion Assembly 32
Figure 18: Key components affected by Handwheel shimming 34
Figure 19: Cut-away view of L120-85 actuator
with Clutch Latch positioned on face of Clutch Bearing 35
Figure 20: Gap between Housing face and Handwheel Bushing
shown as dimension “A” 35
Figure 21: Shimming parts and their order of assembly 37
Figure 22: Shim location for gap “B” dimension/ 37
Figure 23 Three-phase with Control Package 41
Figure 24: Electrical Compartment 43
Figure 25: Motor and Motor Drive Components 44
Figure 26: Handwheel Shaft and Associated Components 45
Figure 27: Drive Sleeve Group 46
Figure 28: Thrust Base Group 47
Tables
Table 1: L120-85 Approximate Weight Chart 8
Table 2: Torque Drive Nut: Maximum Allowable
Bore and Key Sizes 10
Table 3: L120-85 Actuator/Mounting Base Tap Size 13
Table 4: Gap “A” shim thickness selection chart 36
Table 5: Gap “B” shim thickness selection chart 37
1 Introduction
1.1 Purpose
This Installation and Maintenance Manual explains how to install and maintain the L120-85 actuator.
Information is provided for installation, disassembly, reassembly, lubrication, and parts selection.
c WARNING: Read this installation and maintenance manual carefully and completely before storing,
installing, operating or troubleshooting your Flowserve Limitorque actuator. Be aware of electrical
hazards within the actuator and high-pressure hazards at the attached valve or other device when
installing or performing maintenance on your L120-85 actuator.
1.2 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. The user must read and be familiar with these instructions before attempting
installation, operation, or maintenance. Work should be performed by a qualified tradesman who is familiar
with the operation and maintenance of electric actuators. Failure to observe these precautions could result in
serious bodily injury, damage to the equipment, voiding of the warranty, or operational difficulty.
Safety notices are presented in this manual in three forms:
c WARNING: Refers to personal safety. Alerts the user to potential danger. Failure to follow warning
notices could result in personal injury or death.
a CAUTION: Directs the user’s attention to general precautions that, if not followed, could result in
personal injury and/or equipment damage.
NOTE: Highlights information critical to the user’s understanding of the actuator’s installation and
operation.
Limitorque L120-85 Installation, Operation and Maintenance FCD LMENIM1202-03-A4 – 06/15
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2 Initial Inspection and
Storage Instructions
2.1 Inspection and Recording
Upon receipt of the actuator, several steps should be initially followed to ensure condition of equipment and
to establish proper record keeping.
1. Carefully remove the actuator from the shipping carton or skid. Thoroughly examine for any physical
damage which may have occurred during shipment. If you note any damage, immediately report the
damage to the transport company.
2. A nameplate with important information is attached to each actuator. Record this information
for future reference.
2.2 Short-Term Storage (less than one year)
Actuators are not weatherproof until properly installed on the valve or prepared for storage.
Store actuators in a clean, dry, protected warehouse away from excessive vibration and rapid temperature
changes. If the actuators must be stored outside, they must be stored off the ground, high enough to prevent
them from being immersed in water or buried by snow.
1. Position the actuator in storage with motor and switch compartment horizontal.
2. Connect the internal heaters (if supplied) or place desiccant in the switch compartment.
3. Replace all plastic caps or plugs with taped or doped pipe plugs and ensure that all covers are tight.
4. If the actuator is mounted on a valve and the stem protrudes from the actuator, a suitable stem cover
must be provided.
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Limitorque L120-85 Installation, Operation and Maintenance FCD LMENIM1202-03-A4 – 06/15
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2.3 Product Identification
The actuator nameplate is located on the back of the actuator, opposite the limit switch compartment.
The nameplate contains the following information:
• Product name
• Point of Manufacture
• Order Number
• Serial Number
• Customer Tagging
• Certification Information
The motor nameplate is located on the motor. The nameplate contains the following information:
• ID Number
• Run Torque
• RPM
• Full Load Amps
• Insulation Class
• Horsepower
• Number of Phases
• Motor Code
• Connection Diagram
• Start Torque
• Enclosure Type
• Volts
• Locked Rotor Amps
• Duty Rating
• Service Factor
• Frequency
• Ambient Temperature
Limitorque L120-85 Installation, Operation and Maintenance FCD LMENIM1202-03-A4 – 06/15
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Figure 1: Limitorque L120-85 Actuator
Thrust
Base
Handwheel
Electrical
Compartment
Cover
Conduit
Openings
(plugged; two additional openings
are supplied on the bottom of the
Electrical Compartment)
Housing
Declutch
Lever
Motor
Position
Indication
Window
2.4 Product Description
Your L120-85 actuator controls the opening and closing travel of valves or other actuated devices. OPEN and CLOSED limits of travel are
controlled by limit switches, and output torque is controlled by the Torque Switches. As a result, all valves and other actuated devices are
protected from potential damage from overload, improper seating and foreign obstructions.
Limitorque actuators may be mounted on any appropriately sized valve in almost any position or location.
Microprocessor-based controls and monitoring devices are also available for L120 actuators. Contact your local Limitorque distributor or
Limitorque sales office for further information.
2.5 Product Features
• Up to 850 ft-lb/1156 Nm torque capacity.
• Up to 45,000 lb./20250 kg thrust capacity.
• Up to 3.25"/76 mm threaded stem capacity.
• Up to 2.75"/70 mm bore capacity.
• Torque Only (Drive 1) or Torque and Thrust (Drive 2) actuators, with removable ductile iron thrust base assembly.
• Cast iron gear housing.
• All power gearing supported on anti-friction bearings.
• All gearing is alloy, heat-treated steel or bronze.
• Speed range of 24-192 RPM (60 Hz), 20-160 RPM (50 Hz).
• Declutch force independent of load on valve stem.
• Self-locking gearing available.
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Limitorque L120-85 Installation, Operation and Maintenance FCD LMENIM1202-03-A4 – 06/15
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3 Actuator Weight
The following table is an L120-85 representative weight chart. It provides the weight of several components
that may be incorporated into a typical package. Use the chart as a guideline to estimate the weight of your
particular actuator package.
Table 1: L120-85 Approximate Weight Chart
Components lb. kg
L120-85 with 40 ft-lb 1700 RPM Motor (Torque only) 275 125
With Minimum Integral Control
Package and Compartment 315 143
Thrust Base Assembly (Drive 2)170 32
1 Add to weights shown above for basic actuator or basic actuator with integral control package.
Limitorque L120-85 Installation, Operation and Maintenance FCD LMENIM1202-03-A4 – 06/15
8
4 Installation Instructions
c WARNING: Read this Installation and Maintenance Manual carefully and completely before
attempting to store, install, operate or troubleshoot your Limitorque valve actuator. Be aware of
electrical hazards within the actuator and high pressure hazards of the attached valve or other
actuated device when installing or performing maintenance on your L120-85 actuator.
NOTE: If your actuator incorporates a rising stem application, it may be shipped with a plastic cap over
the Drive Sleeve Housing. If so, in order to store without possible corrosion occurring, install a pipe plug
or protective stem cover to protect the Drive Sleeve Housing.
NOTE: Failure to comply with recommended storage procedures could cause the warranty to be voided.
For long-term storage procedures, consult the Limitorque Customer Service Department.
4.1 Actuator Mounting
Your L120-85 is designed to perform actuation for torque only applications (drive 1) or for torque and thrust
applications (drive 2). If you are using a torque only configuration, before installing on the valve or other actu-
ated device, you will need to verify that the Torque Drive Nut (piece 95) is properly bored and keyed to fit your
valve stem. If you are using a torque and thrust configuration, you will need to verify that the Thrust Base
Drive Sleeve (piece 101) is properly threaded to fit your threaded valve stem. Use the following procedures to
check for proper fit of the Torque Drive Nut or the Thrust Base Drive Sleeve.
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Limitorque L120-85 Installation, Operation and Maintenance FCD LMENIM1202-03-A4 – 06/15
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Limitorque L120-85 Installation, Operation and Maintenance FCD LMENIM1202-03-A4 – 06/15
10
4.1.1 Torque Only Applications (Drive 1) (Refer to Figure 27)
Remove the Torque Nut Retaining Ring (piece 98) and Torque Drive Nut (piece 95) from actuator.
Figure 2: L120-85 Torque Drive Nut and Retaining Ring Details
#95 Torque
Drive Nut
#98 Torque Nut
Retaining Ring
A) If Torque Drive Nut has been bored and keywayed by supplier, verify dimensions of keyway for proper compatibility with the valve stem.
B) If Torque Drive Nut has not been bored and keywayed by supplier, it is provided solid (blank) to allow customer to custom bore and key
up to the maximum permissible sizes as listed:
Table 2: Torque Drive Nut: Maximum Allowable Bore and Key Sizes
Key Type Maximum Bore in. (mm) Maximum Key in. (mm)
Rectangle 2.750 (69.85) .625 x .4375 (20 x 12)
Square 2.625 (66.67) .625 x .625 (20 x 20)
4.1.2 Torque and Thrust Applications (Drive 2) (Refer to Figure 28)
Remove Socket Head Cap Screw (piece 110) and Lockwasher (piece 111) that holds the Thrust Base Housing Assembly to the actuator
Housing (piece 1).
Figure 3: Thrust Base removal from an L120-85
#111 Lockwasher
#110 Socket Head
Cap Screw
#100 Thrust Base
Housing
#1 Housing
#101 Thrust Base
Drive Sleeve
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