Flowserve L120-190 through L120-2000 User Manual
Page 3
3
Limitorque
®
L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11
flowserve.com
Contents
1 Introduction
5
1.1 Purpose
5
1.2 User Safety
5
2 Product Capabilities and Features
6
3 Initial Inspection and Storage Instructions
7
3.1 Product Identification
7
3.2 Inspection and Recording
8
3.3 Storage Procedures
8
3.3.1 Short-Term Storage (less than 1 year)
8
4 Actuator Weights
10
5 Installation Instructions
11
5.1 Safety Precautions
11
5.2 Safety Practices
12
5.3 Actuator Preparation
12
5.3.1 Mounting Base
13
5.3.2 Stem Acceptance
13
5.4 Double Torque Switch
13
5.4.1 Setting Torque Switch
14
5.4.2 Balancing Torque Switch
15
5.4.3 Torque Switch Terminal Connections
15
5.5 Geared Limit Switch – Rotor Type
16
5.5.1 Setting Limit Switch
16
5.5.2 Combination of Contacts
19
5.6 Position Indication
19
5.6.1 Local Position Indication
19
5.6.2 Remote Position Indication
20
5.6.3 Calibrating Position Transmitter PT20SD
20
6 Operation
21
6.1 Electrical Start-Up
21
6.1.1 Typical Wiring Diagram
22
6.2 Manual Operation
22
6.3 Motor Operation
23
6.4 Torque and Travel Limiting
23
7 Maintenance
24
7.1 Lubrication
24
7.1.1 Lubrication Inspection
24
7.1.2 Factory Lubricant
25
8 Disassembly and Reassembly
26
8.1 L120-190, -420, and -800
26
8.1.1 To Replace Stem Nut Only
26
8.1.2 L120-190, 420, 800 Disassembly
27
8.1.3 Reassembling Actuator Sizes L120-190, -420 and -800
28
8.1.4 Gaskets
29
8.2 L120-2000
38
8.2.1 Drive 2 Disassembly (Thrust Housing Only)
38
8.2.2 Drive 1 Disassembly (Torque Housing)
38
8.2.3 Drive 1 (Torque Housing) Reassembly
40
8.2.4 Drive 2 (Thrust Housing Only) Reassembly
42