Flowserve LY Series Limitorque - Manual (Page 50)

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11
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Install Top Plate
21. Install Top Plate (piece #2) and Hardware (pieces #65 and 66).
NOTE: If Top Plate will not fit properly, check Ball Bearing (piece #33) and Declutch Shaft (piece
#44) for proper alignment into Top Plate molding.
Install Torque Switch Assembly, Motor Assembly, and Limit Assembly
22. Install Torque Switch Assembly (piece #8) with Gasket and Hardware (piece #98 and 97).
23. Install Limit Switch Assembly (piece #7) and Heater Assembly (piece #120) with Hardware (piece
#77, 78, 79, and 80).
24. Reconnect Limit Switch, Torque Switch, and Terminal Strip. (See the wiring diagram included with
the actuator for proper wiring configuration.)
Install Control Cover
NOTE: Before installing the Control Cover, reset the Limit Switches and Mechanical Stops. Recheck
motor for proper rotation.
25. Install Cover Seal O-Ring (piece #130).
26. Install Control Cover (piece #3) with Hardware (piece #67 and 68).
7.3.3 LY 2001/3001 Disassembly
c WARNING: HAZARDOUS VOLTAGE. Turn off all power before disassembling your LY actuator.
c WARNING: POTENTIAL HIGH-PRESSURE VESSEL. Before disassembling your actuator, ensure
that the valve or other actuated device is isolated and is not under pressure.
Piece numbers refer to Figures 6.8, 6.9, 6.10, and 6.11.
Remove Cover and Top Plate
1. Shut off all power to the actuator.
2. Remove the Control Cover (piece #3).
3. Disconnect all electrical leads from the Torque Switch (piece #8) and Limit Switch (piece #7). Make
sure all wire leads are properly marked for reassembly.
4. Remove all external wires to the Terminal Strips (piece #9, 110, and 111).
5. If unit has an Integral Assembly, remove all wires from the Integral Assembly to the Terminal Strip
(piece #9, 110, and 111).
6. Remove Screws/Lockwashers (piece #79 and 80) that are holding the Limit Switch (piece #7).
Remove the Limit Switch.
7. Remove two Screws (piece #97) and two Lockwashers (piece #98) that are holding the Torque
Switch (piece #8). Remove the Torque Switch.
8. Remove two Screws (piece #88) and two Lockwashers (piece #89) to remove the Top Plate
(piece #2).