Flowserve LY Series Limitorque - Manual (Page 36)

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11
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6.2.3 DC Motor
NOTE: Your application may vary from the standard wiring configuration for the DC motor. Refer to the
specific actuator wiring diagram for wiring configuration.
1. Using the Handwheel, move the valve to a midtravel position. Midtravel position allows electrical
operation in the valve “safe” area and keeps the OPEN and CLOSED limit switches from tripping
while testing motor direction.
2. Test motor direction by momentarily pressing the OPEN pushbutton:
a. If the actuator moves toward CLOSED, immediately turn all power OFF and reverse the motor
leads A1 and A2 on the terminal strip.
b. If the actuator moves toward OPEN, the motor is wired properly for the application.
6.3 Electrical Startup
1. Confirm that the actuator has been correctly lubricated. This is particularly important if the actuator
has been in long-term storage.
2. Ensure that the Torque Switch and Limit Switch have been properly set per Section 5.5, Torque
Switch Settings and Section 5.8, Setting the Limit Switches respectively.
3. Engage MANUAL operation and hand-crank valve well away from the OPEN or CLOSED
end-of-travel.
4. Turn power ON and push the OPEN button to electrically operate the actuator.
5. Verify output rotation:
• If Motor rotation (phase) is correct, the valve will begin to open.
• If the valve begins to CLOSE — STOP IMMEDIATELY.
Refer to Section 6.2, Verify Correct Motor Rotation (Phasing) and OPEN/CLOSE Pushbutton
Operation to correct the motor rotation, if necessary.
6. If the actuator configuration has a control package, see the specific control package Instruction and
Maintenance Manual for proper setup and calibration.
The actuator should operate correctly and will stop at the end-of-travel by the Torque and Limit
Switch functions.