Limitorque LY Series

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Flow Control Division

Limitorque Actuation Systems

Australian Distributor for Limitorque

Acrodyne Pty Ltd

14/11 Havelock Road

Bayswater, Victoria 3153

Australia

Phone 03-8727-7800

Fax 03-9729-8699

Main Page

Table of Contents3
Introduction7
Purpose7
User Safety7
Product Capabilities and Features9
Figure 2.1 - LY Actuator9
Initial Inspection and Storage Instructions11
Product Identification11
Inspection and Recording11
Figure 3.1 - LY Nameplate11
Storage Procedures12
Short-Term Storage (Less than 1 Year)12
Long-Term Storage (1 to 5 Years)12
Unit Weights13
Table 4.1 - Unit Weights13
Installation Instructions15
Safety Precautions15
Initial Actuator Preparation15
Figure 5.1 - Torque Nut and Retaining Drive Ring Removal from an LY 100115
Installation Overview16
Figure 5.2 - LY Keyway Locations16
Table 5.1 - Torque Drive Nut Custom Bore and Keyway Sizes16
Figure 5.3 - LY 1001, 2001, and 3001 Torque Drive Nut Orientation17
Figure 5.4 - Removing Control Cover and Conduit Pipe Plugs18
Table 5.2 - LY Actuator/Mounting Base Tap Sizes18
Figure 5.5 - Grounding Lug Location19
Table 5.3 - Control Cover and Conduit Pipe Plug Hardware19
Table 5.4 - LY Control Cover and Integral Control Cover Bolt Sizes19
Torque Switch Settings20
Rewiring the Torque Switch for Non-Standard Drive Sleeve Rotation20
Figure 5.6 - Reversing Torque Switch Wiring20
Limit Switch and Mechanical Stop Settings21
Setting the Limit Switches21
Setting the CLOSED Limit Switch21
Figure 5.7 - Limit Switch Setting Nut22
Figure 5.8 - Setting CLOSE Limit Cam22
Setting the OPEN Limit Switch23
Figure 5.9 - Setting OPEN Limit Cam23
Mechanical Stops24
Setting the CLOSED Mechanical Stop on the LY 100124
Table 5.5 - Mechanical Stop Set Screws24
Setting the CLOSED Mechanical Stop on the LY 2001/300125
Table 5.6 - Mechanical Stop and Locknut Screw Sizes25
Setting the OPEN Mechanical Stop on the LY 100126
Setting the OPEN Mechanical Stop on the LY 2001/300126
Setting the MDPI (Mechanical Dial Position Indicator)26
Setting the Potentiometer27
Figure 5.13 - Potentiometer Calibration Components28
Operation29
Typical LY 1001 Operation29
Verify Correct Motor Rotation (Phasing) and OPEN/CLOSE Pushbutton Operation6-129
Three-Phase Motor29
Figure 6.1 - Standard Actuator/Three-Phase30
Figure 6.2 - Three-Phase with Control Package31
Single-Phase Motor32
Figure 6.3 - Standard Actuator/Single-Phase33
Figure 6.4 - Single-Phase with Control Package34
DC Motor35
Electrical Startup35
Manual Operation35
Motor Operation36
Figure 6.5 - LY 1001 Cover and Associated Parts36
Figure 6.6 - LY 1001 Top Plate and Associated Parts37
Figure 6.7 - LY 1001 Housing and Associated Parts38
Figure 6.8 - LY 2001/3001 Cover and Associated Parts39
Figure 6.9 - LY 2001/3001 Top Plate and Associated Parts40
Figure 6.10 - LY 2001/3001 Housing and Associated Parts41
Maintenance43
Lubrication43
Lubrication Inspection43
Factory Lubricant43
Minimum Lubricant Qualities Required43
Disassembly and Reassembly44
LY 1001 Disassembly44
LY 1001 Reassembly45
LY 2001/3001 Disassembly47
LY 2001/3001 Reassembly49
Troubleshooting51
Parts Lists55
Table 8.1 - LY 1001 Parts List55
Table 8.2 - LY 2001/3001 Parts List56
How to Order Parts59
Regulatory Information61

Limitorque LY Series - Page 63

Table of Contents