Flowserve Limitorque L120-190 - Initial Inspection and Storage Instructions

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Limitorque

L120-190 through L120-2000 FCD LMENIM1203-01-A4 – 05/15

L120 Series actuators operate without modiﬁcation in any rising or non-rising stem application for

linear-action valves.

The actuators meet rigid safety requirements and are available in weatherproof, explosionproof, and

submersible conﬁgurations.

The actuators are compatible with a wide range of control options from stand-alone actuators with local

control stations to open standards-based DDC-100 networks with up to 250 actuators.

The actuators are designed with integral control packages including plug-in interconnect boards that

increase control functionality for stand-alone or networked actuators.

Torque overload protection is provided in both directions of travel.

Initial Inspection and

Storage Instructions

Main Page

Table of Contents3
Introduction5
Purpose5
User Safety5
Initial Inspection and Storage Instructions6
Product Identification7
Inspection and Recording8
Short-Term Storage (Less than 1 Year)8
Figure 2.1 - L120-190 through 20008
Actuator Weights10
Table 3.1 - Actuator Weights10
Installation Instructions11
Safety Precautions11
Safety Practices12
Actuator Preparation12
Mounting Base13
Stem Acceptance13
Double Torque Switch13
Figure 4.1 - Double Torque Switch13
Table 4.1 - Mounting Base Dimensions13
Table 4.2 - Maximum Stem Acceptance13
Setting Torque Switch14
Figure 4.2 - Setting Torque Switch14
Balancing Torque Switch15
Torque Switch Terminal Connections15
Figure 4.3 - Ring Tongue Terminal15
Geared Limit Switch - Rotor Type16
Setting Limit Switch16
Table 4.3 - Terminal Dimensions by Cable Size16
Figure 4.4 - Geared Limit Switch17
Table 4.4 - Maximum Drive Sleeve Turns17
Figure 4.5 - Setting Geared Limit Switch18
Combination of Contacts19
Position Indication19
Local Position Indication19
Figure 4.6 - Position Indicators19
Remote Position Indication20
Calibrating Position Transmitter PT20SD20
Figure 4.7 - Typical Connection for a 1000 Ohm Potentiometer20
Operation21
Electrical Start-Up21
Typical Wiring Diagram22
Manual Operation22
Motor Operation23
Torque and Travel Limiting23
Maintenance24
Lubrication24
Lubrication Inspection24
Factory Lubricant25
Table 6.1 - Lubricant Weights25
Disassembly and Reassembly26
L120-190, -420, and -80026
To Replace Stem Nut Only26
L120-190, 420, 800 Disassembly27
Reassembling Actuator Sizes L120-190, -420 and -80028
Gaskets29
Figure 7.1 - L120-190 and -420 Drive Sleeve Side View (Refer to Table 8.1 for Parts List)30
Figure 7.2 - L120-190 and -420 Worm Shaft Side View (Refer to Table 8.1 for Parts List)31
Figure 7.3 - L120-190 and -420 Top View (Refer to Table 8.1 for Parts List)32
Figure 7.4 - L120-800 Drive Sleeve Side View (Refer to Table 8.1 for Parts List)33
Figure 7.5 - L120-800 Worm Shaft Side View (Refer to Table 8.1 for Parts List)34
Figure 7.6 - L120-800 Top View (Refer to Table 8.1 for Parts List)35
Table 7.1 - L120-190, -420 and -800 Typical Parts List36
L120-200038
Drive 2 Disassembly (Thrust Housing Only)38
Drive 1 (Torque Housing) Reassembly40
Drive 2 (Thrust Housing Only) Reassembly42
Figure 7.7 - L120-2000 Drive Sleeve Side View (Torque Base) (Refer to Table 8.2 for Parts List)43
Figure 7.8 -L120-2000 Top View (Refer to Table 8.2 for Parts List)44
Figure 7.9 - L120-2000 Side View (Refer to Table 8.2 for Parts List)45
Figure 7.10 - L120-2000 Exploded View46
Table 7.2 - L120-2000 Typical Parts List47
Standard Wiring Diagrams49
Figure 8.1 - Wiring Diagram - no Controls49
Figure 8.2 - Wiring Diagram - Integral Controls50
Figure 8.3 - Wiring Diagram - NCU51
Troubleshooting52
How to Order Parts53
EC Declaration of Conformity54

Flowserve Limitorque L120-190 - Initial Inspection and Storage Instructions

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