To Next PageTo Next PageWhat to do if air supply to Leslie Controller actuator is not fully stroking?
If the Leslie Controller actuator isn't fully stroking or providing enough load when air is supplied, verify the air supply pressure against the initial actuator sizing requirements. Also, inspect for seal leakage using a leak detection solution. For reverse-acting actuators, check the stem boot seal. Replace seals if needed.
How to fix Leslie 35 actuator that does not move smoothly?
If the Leslie Controller actuator does not move smoothly, ensure that the valve packing is not over-tightened and that the spring is not rubbing against the sides of the spring case.
What to do if Leslie 35 actuator does not fully stroke with air control signal?
If an air control signal is being sent to the Leslie Controller actuator but the actuator does not fully stroke, check the bench range of the actuator by reviewing the original specifications for the actuator.
What to do if Leslie 35 Controller actuator does not return to position after air removal?
If the Leslie Controller actuator does not return to either the open or closed position when air is removed, check the equipment for blockage and inspect for a broken spring.
Guides mounting a direct-acting actuator to equipment, ensuring proper stem connection and air supply.
Instructions for mounting a reverse-acting actuator, focusing on stem connection and air supply.
Procedure to adjust the actuator's travel distance by controlling air pressure and stem movement.
Steps for adjusting the spring load to achieve the desired force output based on failure mode.
Overview of general steps for actuator removal from equipment, including safety and air handling.
Covers disassembly and reassembly of direct-acting actuators, including HOD components.
Details disassembly and reassembly of reverse-acting actuators, including HOD components.
Guides mounting a direct-acting actuator to equipment, ensuring proper stem connection and air supply.
Instructions for mounting a reverse-acting actuator, focusing on stem connection and air supply.
Procedure to adjust the actuator's travel distance by controlling air pressure and stem movement.
Steps for adjusting the spring load to achieve the desired force output based on failure mode.
Overview of general steps for actuator removal from equipment, including safety and air handling.
Covers disassembly and reassembly of direct-acting actuators, including HOD components.
Details disassembly and reassembly of reverse-acting actuators, including HOD components.
This document describes the Leslie Controls, Inc. Diaphragm Actuator models 35(R), 55(R), 85(R), and 135(R), providing installation, operation, and maintenance instructions.
The Leslie Diaphragm Actuator is a device designed to control the movement of equipment, typically valves, by converting air pressure into mechanical force. It comes in two primary configurations:
The actuator can be equipped with a Hand Operating Device (HOD) for manual control, allowing for manual adjustment of the stem position.
The actuators are available in various sizes, each with specific stroke lengths, diaphragm areas, and spring adjustor rod diameters.
Actuator Load Parameters (Table 1):
Torque Values (ft-lbs) (Table 2 - Direct Actuator):
Torque Values (ft-lbs) (Table 3 - Hand Operating Device - Direct Actuator):
Torque Values (ft-lbs) (Table 4 - Reverse Actuator):
Torque Values (ft-lbs) (Table 5 - Hand Operating Device - Reverse Actuator):
Dimensional Information (Tables 4 & 5): Detailed dimensions (J, J-J, L, M, N-1, N-2, N-3, P, R, S, T, U, V, W, X, Z) are provided for both direct and reverse acting actuators across all sizes, in both inches and millimeters. These tables also include net weights for cast aluminum and cast iron versions, with and without the Hand Operating Device.
General| Brand | Leslie |
|---|---|
| Model | 35 |
| Category | Controller |
| Language | English |
