Flowserve L120-85 Actuator - Manual (Page 3)

1.1 Purpose 5
1.2 User Safety 5
2.1 Product Identification 7
2.2 Product Description 8
2.3 Product Features 8
4.1 Safety 11
4.2 Initial Actuator Preparation 11
4.2.1 Inspection and Recording 11
4.2.2 Short-Term Storage (less than one year) 11
4.3 Actuator Mounting 12
4.3.1 Torque Only Applications (Drive 1) 12
4.3.2 Torque and Thrust Applications (Drive 2) 12
4.3.3 Mounting Bolts 13
4.3.4 Stem Cover for Rising Stem Applications 13
4.4 Verifying Motor Rotation Direction 14
4.4.1 Initial Electrical Connections 14
4.4.2 Motor rotation (phasing)
and OPEN/CLOSE pushbutton operation. 15
4.4.3 Three-Phase Motor 15
4.4.4 DC Motor 15
4.5 Limit Switch Settings 15
4.5.1 Basic Theory of Operation 16
4.5.2 Adjustment—General 17
4.5.3 Setting the OPEN Limit Switch 17
4.5.4 Setting the CLOSE Limit Switch 18
4.6 Torque Switch Setting and Wiring 19
4.6.1 Basic Theory of Operation 19
4.6.2 Setting the Torque Switch 19
4.6.3 Balancing the Torque Switch 19
4.6.4 Rewiring the Torque Switch
for Non-Standard Drive Sleeve Rotation 20
4.7 Position Indication 20
4.7.1 Local Position Indication 20
4.7.2 Remote Position Indication 21
4.7.3 Setting the Potentiometer 22
5.1 Description of Motor Operation 23
5.2 Description of Manual Operation 23
6.1 Lubrication 25
6.1.1 Initial Inspection 25
6.1.2 Frequency 25
6.1.3 Routine Inspection 25
6.1.4 Factory Lubricants 25
6.1.5 Minimum Lubricant Qualities Required 26
8.1 Handwheel Shaft Assembly and Shimming 31
8.2 Verifying Handwheel Operation 33
8.3 Thrust Base Assembly and Shimming 33
9.1 Typical Wiring Diagram 37
Three-phase with Control Package 37
10.1 L120-85 Illustrated Parts Breakdown 40
10.2 L120-85 Parts List 45
Contents

Limitorque L120-85 Installation, Operation and Maintenance FCD LMENIM1202-00 – 11/05
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