Flowserve LY Series Limitorque - Manual (Page 12)

Limitorque LY Series: LY 1001, LY 2001 and LY 3001 FCD LMENIM1501-00 – 11/11
12
a CAUTION: Do not operate the valve under motor operation without first setting or checking the
limit switch setting and motor direction.
a CAUTION: Do not force the declutch lever into the motor operation position. The lever returns to
this position automatically when the motor is energized.
a CAUTION: Do not depress the declutch lever during motor operation to stop valve travel.
a CAUTION: Do not use replacement parts that are not genuine Flowserve Limitorque parts, as
serious personal injury and/or damage to the actuator and valve may result.
a CAUTION: Do not lift the actuator by handwheel.
5.2 Safety Practices
The following check points should be performed to maintain safe operation of the LY actuator:
• Keep the switch compartment clean and dry.
• Keep the valve stem clean and lubricated.
• Set up a periodic operating schedule for infrequently used valves.
• Verify all actuator wiring is in accordance with the applicable wiring diagram.
• Carefully check for correct motor rotation direction. If the valve closes when open button is pushed,
the motor leads may have to be reversed.
5.3 Initial Actuator Preparation
Piece numbers refer to Figure 5.1.
1. Remove the Retaining Drive Ring (piece #165 or #109) and Torque Nut (piece #32) from actuator.
Figure 5.1 – Torque Nut and Retaining Drive Ring Removal from an LY 1001
L i m
i t o
r q u
e
#32 Torque Nut
#165 (LY 1001)
#109 (LY 2001/3001)
Torque Nut Retaining Drive Ring