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Limitorque L120-85
Flowserve Limitorque L120-85 User Manual
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Experience In Motion
USER INSTRUCTIONS
Installation
Operation
Maintenance
Limitorque
®
L120-85 Actuator
FCD LMENIM1202-03-A4 – 06/15
2
Table of Contents
Table of Contents
2
Introduction
4
Purpose
4
User Safety
4
Initial Inspection and Storage Instructions
5
Inspection and Recording
5
Short-Term Storage
5
Product Identification
6
Product Description
7
Product Features
7
Figure 1: Limitorque L120-85 Actuator
7
Actuator Weight
8
Table 1: L120-85 Approximate Weight Chart
8
Installation Instructions
9
Actuator Mounting
9
Figure 2: L120-85 Torque Drive Nut and Retaining Ring Details
10
Figure 3: Thrust Base Removal from an L120-85
10
Table 2: Torque Drive Nut: Maximum Allowable
10
Torque Only Applications (Drive 1)
11
Mounting Bolts
11
Stem Cover for Rising Stem Applications
11
Table 3: L120-85 Actuator/Mounting Base Tap Size
11
Verifying Motor Rotation Direction
12
Initial Electrical Connections
12
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
13
Figure 7: Grounding Lug Location
13
Motor Rotation (Phasing) and OPEN/CLOSE Pushbutton Operation
14
Three-Phase Motor
14
DC Motor
14
Limit Switch Settings
15
Basic Theory of Operation
15
Figure 8: Limit Switch Rotor Development
15
Adjustment-General
16
Setting the OPEN Limit Switch
17
Figure 9: L120-85 Limit Switch Components
17
Setting the CLOSE Limit Switch
18
Figure 10: Limit Switch OPEN/CLOSED Rotor Cam Orientation
18
Torque Switch Setting and Wiring
19
Basic Theory of Operation
20
Setting the Torque Switch
20
Balancing the Torque Switch
20
Figure 11: Torque Switch Components
20
Rewiring the Torque Switch for Non-Standard Drive Sleeve Rotation
21
Figure 12: Reversing Torque Switch Wiring
21
Position Indication
22
Local Position Indication
22
Remote Position Indication
22
Figure 13: Aligning MDPI Pointer for Fully CLOSED Position
22
Figure 14: Remote Position Indicator Calibration Configuration
23
Setting the Potentiometer
24
Figure 15: Potentiometer Calibration Configuration
24
Figure 16: Loosening Potentiometer Assembly
25
Operation
26
Description of Motor Operation
26
Description of Manual Operation
26
Electrical Start-Up Procedure
27
Maintenance
28
Lubrication
28
Initial Inspection
28
Frequency
28
Routine Inspection
28
Factory Lubricants
29
Minimum Lubricant Qualities Required
29
Disassembly
30
Removal from Valve
30
Open Electrical Compartment and Disconnect Motor
31
Remove Control Wiring
31
Remove Limit and Torque Switch
31
Remove Motor Assembly
31
Remove Handwheel
31
Remove Handwheel Shaft Assembly
31
Remove Declutch Lever Assembly
32
Remove Clutch Assembly
32
Remove Clutch Pinion Assembly
32
Remove Worm Shaft Assembly
32
Figure 17: Removing Clutch Pinion Assembly
32
Remove and Disassemble Thrust Base
33
Remove Drive Sleeve
33
Assembly
34
Handwheel Shaft Assembly and Shimming
34
Figure 18: Key Components Affected by Handwheel Shimming
34
Figure 19: Cut-Away View of L120-85 Actuator
35
Figure 20: Gap between Housing Face and Handwheel Bushing
35
Table 4: Gap "A" Shim Thickness Selection Chart
36
Figure 21: Shimming Parts and Their Order of Assembly
37
Figure 22: Shim Location for Gap "B" Dimension
37
Table 5: Gap "B" Shim Thickness Selection Chart
37
Verifying Handwheel Operation
38
Thrust Base Assembly and Shimming
38
Troubleshooting
39
Typical Wiring Diagram
41
Three-Phase with Control Package
41
Figure 23 Three-Phase with Control Package
41
How to Order Parts
42
L120-85 Illustrated Parts Breakdown
43
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
L120-85 Parts List
48
4
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Flowserve Limitorque L120-85 Specifications
General
Brand
Flowserve
Model
Limitorque L120-85
Category
Controller
Language
English
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