Flowserve L120-190 through L120-2000 - Manual (Page 21)

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Limitorque ® L120-190 through L120-2000 FCD LMENIM1203-00 – 10/11
flowserve.com
6
Operation
c WARNING: See Sections 5.1 and 5.2 Safety Precautions and Safety Practices.
c WARNING: Do not manually operate the actuator with devices other than the installed
Handwheel and Declutch Lever. Using force beyond the ratings of the actuator 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 and motor direction. If the valve closes when the open button is pushed, the motor may
need to be electrically reversed.
• Do not force the declutch lever into hand operation. If the clutch does not easily engage, rotate
handwheel slowly while operating the declutch lever.
• Do not force the declutch lever into motor operation position. Lever returns to this position automati-
cally when motor is energized.
• Do not run “plug” type valve against stop.
• Do not alternately start/stop the motor to open or close a valve that is too tight for normal operation.
6.1 Electrical Start-Up
1. Verify that the actuator has been correctly lubricated. This is particularly important if the actuator
has been in long-term storage.
2. Verify that the geared limit switch has been correctly set per Section 5.5.1, Setting Limit Switch.
3. If the valve stem is not visible, remove the stem cover or handwheel cover plate to observe the
output direction of the drive sleeve.
4. Engage manual operation and hand crank the valve well away from end-of-travel positions.
5. Turn on power supply and push the “open” button on the pushbutton station.