LMAIM1501
LY Installation and Maintenance for LY 1001, LY 2001 and LY 3001
6-7
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 5.4, Torque Switch
Settings and Section 5.7, 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.
6.4
Manual Operation
a
WARNING: Do not manually operate actuator with devices other than installed Handwheel and Declutch
Lever. Using additive force devices (cheater bars, wheel wrenches, pipe wrenches, or other devices of this
nature) on the actuator handwheel or declutch lever may cause serious personal injury and/or damage to the
actuator or valve.
Piece numbers refer to Figures 6.5, 6.6, and 6.7 for LY 1001 and Figure 6.8, 6.9, 6.10, and 6.11 for LY 2001/3001.
The LY actuator has a Handwheel for manual operation. The unit can be manually operated any time the motor is
not energized.
1.
To manually operate the actuator, push the Declutch Lever (piece #45) clockwise approximately 20° until it
latches.
2.
If the Declutch Lever will not turn 20° or it does not latch, DO NOT FORCE. Rotate the Handwheel (piece #41)
slightly (in either direction) while continuing to push the Declutch Lever in the clockwise direction; the
Declutch Lever will latch in place. When the Declutch Lever is latched in place, the Clutch (piece #13) is moved
until its lugs engage with the lugs on the Handwheel Clutch (piece #16). This position is maintained
indefinitely by the Declutch Fork Assembly (piece #46). When the motor is energized, a flat on the Input Worm
Gear (piece #18) releases the Declutch Fork Assembly, pushing the Clutch into motor operation by the
Declutch Return Spring (piece #47).
Flow Control Division
Limitorque Actuation Systems
