Flowserve LY Series Limitorque - Manual (Page 27)

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Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11
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6
Operation
6.1 Typical LY 1001 Operation
LY actuators are always available for motor operation when the motor is energized.
NOTE: Applied voltage rating = voltage rating of actuator ±10%
c WARNING: Do not manually operate the actuator with devices other than installed Handwheel
and Declutch Lever. Using force beyond the ratings of the unit and/or using additive force
devices such as cheater bars, wheel wrenches, pipe wrenches, or other devices on the actuator
Handwheel or Declutch Lever may cause serious personal injury and/or damage to the actuator
or valve.
a CAUTION: Do not motor-operate the valve without first setting or checking the limit switch
setting, motor direction, and mechanical stops. Do not force the Declutch Lever into the motor
operation position. The Declutch Lever returns to motor-operation position automatically when
the motor is energized.
6.2 Verify Correct Motor Rotation (Phasing) and
OPEN/CLOSE Pushbutton Operation
Correct motor rotation must be verified to prevent serious damage to valve or other equipment. If the
actuator motor rotates in the wrong direction, damage could occur by over-torquing equipment into a
seated position.
Prior to being shipped from the factory, each actuator is inspected to verify proper operation of the
Torque and Position Limit Switches and to ensure that they function correctly, i.e., closes when the
CLOSE pushbutton is depressed, opens with the OPEN pushbutton, etc. These inspections are made
with a properly phased power source connected as described in the actuator manual.
a CAUTION: To ensure proper operation and to prevent your actuator or other actuated equipment
from damage, verify that your unit is properly connected to its power source.