Leslie Controls 135R User Manual

Installation, Operating and

Maintenance Instructions

12501 Telecom Drive, Tampa Florida 33637

Supplement

DIAPHRAGM ACTUATOR

35(R), 55(R), 85(R), 135(R)

TABLE OF CONTENTS

10/0.5.1

Rev. 1

SCOPE...............................................................................................................................................................................................2

INSTALLATION..............................................................................................................................................................................2

SSEMBLE DIRECT (SPRING TO RETRACT) ACTUATOR TO EQUIPMENT

SSEMBLE REVERSE (SPRING TO EXTEND) ACTUATOR TO EQUIPMENT

ETTING ACTUATOR STROKE

ETTING THE ACTUATOR SPRING LOAD

OPERATION....................................................................................................................................................................................3

MAINTENANCE..............................................................................................................................................................................3

ENERAL

IRECT ACTUATOR DISASSEMBLY

IRECT ACTUATOR REASSEMBLY

IRECT ACTUATOR

EVERSE ACTUATOR DISASSEMBLY

EVERSE ACTUATOR REASSEMBLY

EVERSE ACTUATOR

TROUBLESHOOTING .................................................................................................................................................................16

.........................................................................................................................................................................................3

HOD D HOD R

..........................................................................................................................................................2

..........................................................................................................................................2

..................................................................................................................................................3

...................................................................................................................................................3

ISASSEMBLY

EASSEMBLY

ISASSEMBLY

EASSEMBLY

.........................................................................................................................................4

..........................................................................................................................................4

.............................................................................................................................................10

...............................................................................................................................................10

....................................................................................................................................10

.....................................................................................................................................11

...........................................................................................2

ILLUSTRATION INDEX

IGURE 1 - DIRECT DIAPHRAGM ACTUATOR/

IGURE 2 - EXTERNAL VIEW OF DIRECT ACTING DIAPHRAGM ACTUATOR

IGURE 3 - REVERSE DIAPHRAGM ACTUATOR/

IGURE 4 - DISENGAGING HANDSCREW DISC FROM NUT

IGURE 5 - EXTERNAL VIEW OF REVERSE ACTING DIAPHRAGM ACTUATOR

HOD.............................................................................................................................6

.........................................................................................8

HOD........................................................................................................................12

..................................................................................................................13

.....................................................................................13

SCOPE

All warnings and instructions from equipment IOM

that Actuator is mounted to must be followed.

The following instructions cover installation, operation and maintenance of Leslie's diaphragm actuators.

CAUTION!

INSTALLATION

Keep all body parts away from any moving parts of

actuator to prevent injury/death. Since air is being

used to move actuator proper safety equipment (i.e.

safety glasses) must be worn. Actuator contains a

very powerful spring, extreme caution must be used

when operating actuator. When supplying air to

Before starting installation of the actuator assembly, units should be unpacked and checked against packing list and/or the approved customer drawing.

1. Actuator is designed to be mounted in the vertical

position. For other than vertical installations piping supports may be required. Consult factory.

Assemble Direct (Spring to

retract) Actuator to Equipment

1. Ensure that there is no spring tension on actuator by

"unscrewing" spring adjusting nut (35). (see Fig 1)

2. Connect air supply to the top of the actuator until the

stem is fully extended.

3. Ensuring that the thread size of the actuator and the

control valve stem (refer to Fig 2 dimension x) is the same, and after lifting valve plug screw the actuator onto the stem about 1 diameter of thread.

4. Remove air supply and secure actuator to equipment.

(NEED TO PUT BOLT TORQUE VALUES FOR STUDS TO HOLD ACTUATOR DOWN)

CAUTION!

actuator do not exceed 60 psig.

5. See Stroke adjustments section for final setting of

actuator.

Assemble Reverse (Spring to

extend) Actuator to Equipment

1. Ensure that there is no spring tension on actuator by

"unscrewing" spring adjusting nut (40). (See Fig 3)

2. Ensuring that thread size of actuator and control valve

stem (refer to Fig 4 dimension x) is the same, and after lifting valve plug screw actuator onto equipment about 1 diameter of thread.

3. Connect air supply to bottom of actuator and allow

actuator to come to rest on valve stem. Secure actuator to stem.

4. See stroke adjustments section for final setting of

actuator.

Setting Actuator Stroke

1. Apply air to either bottom (Reverse) or top (Direct) of

actuator and note the total travel distance of actuator.

2. To adjust stroke of actuator, retract actuator stem by

removing air from actuator (Direct) or applying air to actuator (Reverse). Screw equipment stem further into actuator and then stroke actuator again.

3. Repeat step 2 until desired stroke is reached.

4. Secure Travel indicator (42) to actuator yoke (4) by

fastening screw (43) as shown. (See Fig 3)

Setting the Actuator Spring

Load

1. To adjust load given by failure mode

(Direct/Reverse) of actuator, first remove all air pressure from actuator.

2. Hold actuator stem in place with a wrench.

3. Using a steel bar (see Table 1), turn spring

adjusting nut (40) one half turn. (See Fig 3)

4. Measure force output of spring to see if at desired

load. (This can be done by slowly applying air to actuator and recording at what air pressure actuator

starts to move. Take that air pressure and multiply it by area of actuator (see Table 1) in order to obtain the force output of spring.

5. Repeat steps 1-4 until desired load is reached.

Spring loads will vary if the actuator is mounted on

equipment that does not fully utilize the entire stroke

Actuator Size Stroke

35 3/4 34

35R 3/4 31

55 1 57

55R 1 54

85 2 90

85R 2 87

135 3 135

135R 3 131

Table 1- Actuator Load Parameters

NOTE

length of the actuator.

(in)

Area

(in2)

Spring Adjustor Rod

Dia. (in)

3/4

7/8

0.745

0.995

OPERATION

Once actuator stroke and spring load have been adjusted, equipment can be placed into operation. Route air supply from control system to actuator. Ensure that instrument air is being used to operate actuator. See equipment instructions for proper operation of assembly.

MAINTENANCE

General

1. Remove all air and accessories from actuator prior

to removal from equipment.

2. Support actuator prior to removing mounting bolts.

For reverse acting actuators apply air to top of actuator before removing mounting bolts.

3. Remove actuator mounting bolts.

4. For direct acting actuators, air may need to be

applied to actuator before removing actuator from equipment shaft. For reverse acting actuators, air may need to be removed from actuator. Unscrew

actuator from equipment shaft by either spinning actuator or unscrewing the shaft. (NOTE: If

actuator is mounted to a valve the valve shaft must not be turned unless valve plug is lifted off valve seat!)

5. Remove all air pressure from actuator and unload

spring tension by grasping actuator stem with a wrench and unscrewing spring adjustment nut (40). (see Fig 3)

6. Actuator is now ready for disassembly.

Direct Actuator Disassembly

(see Fig 1)

Spring load must be completely removed before

proceeding or injury/death can occur.

1. Remove nuts/bolts (22/23), upper diaphragm case

(20) and diaphragm (21).

2. To remove the other components, lift out

diaphragm disc (24) and entire diaphragm disc and spring (28) assembly will lift out.

3. Unscrew diaphragm disc nut (16 only showing in

Fig 3) and remove springs (28,29) from the assembly.

4. Remove spring adjustment nut (35).

5. Remove lower diaphragm case screws (26).

CAUTION!

Direct Actuator Reassembly

(see Fig 1)

Ensure that all the components being installed are free from any nicks burrs or defects prior to assembly.

See Torque Values in Table 2

1. Install lower diaphragm case bolts (26) and torque

to the values given in Table 2.

NOTE

2. Install spring adjusting nut (35) and thread it all the

way down as shown.

3. Install springs (28,29).

4. Install diaphragm disc nut (16 only showing in Fig

3) and diaphragm disc (24). (See table 2)

5. Slide diaphragm plate/assembly into yoke (32) as

shown.

6. Install diaphragm (21) and align holes with those in

diaphragm case (For sizes 35, 55 and 85). For 135 actuators place the bead of diaphragm (21) in the recess of lower diaphragm case (25).

7. For 35 actuators and where flat stock diaphragm

material is used as an emergency measure see special "performing" instructions in step 8. Install upper diaphragm case (20) and install (4) nuts and bolts (22/23) (90o apart) and finger tighten. Install remaining bolts and nuts and torque to the values given in Table 2.

8. Special "Performing" Instructions - Flat stock

material is used for 35 diaphragms and emergency measure diaphragms. First finger tightens all diaphragm case bolts. Then compress actuator spring sufficiently to move diaphragm through its full travel. This performs diaphragm and permits full movement through rated travel without resistance from a taut diaphragm.

Act. Size (see Fig 1)

35 15-20 15-20 55 30-36 15-20 85 30-36 15-20 135 45-50 15-20

Table 2 - Torque Values (ft-lbs)

Size 1 5 17 35 15-20 2-5 50-80 55, 55A, 85, 85A 135 30-36 2-5 50-80

Table 3 – Torque Values Hand Operating Device (ft-lbs)

Lower Dia. Casing Bolts (26)

15-20 2-5 50-80

Upper Dia. Casing Bolts (22,23)

Direct Actuator HOD

Disassembly

(see Fig 1)

Spring load must be completely removed before proceeding or injury/death can occur.

1. Remove nut (1), lock washer (2), and handwheel

(3).

2. Remove packing gland (5), packing ring(s) (6),

washer (7), and O-Ring (8) from bonnet (9).

3. Screw handscrew (4) down into bonnet (9) until

stem bottoms on bonnet threads.

4. Remove handscrew disc (15) after removing

retaining ring and half rings above it.

5. Remove handscrew (4) through upper end of

bonnet (9).

CAUTION!

Direct Actuator HOD

Reassembly

(see Fig 1)

Ensure that all components being installed are free

from any nicks burrs or defects prior to assembly.

1. Insert handscrew (4) in top of bonnet (9) and screw

down through bonnet threads.

2. Place retaining ring over handscrew thread. Insert

half rings in the handscrew groove with wide face of rings upward toward bonnet (9). Install handscrew disc (15) over half rings and fit retainer ring into groove of disc making sure it enters groove.

3. Screw handscrew (4) up through bonnet (9). Place

O-Ring (8) over handscrew (4) stem and into bonnet (9) followed by washer (7) and packing ring(s) (6). Screw packing gland (5) into bonnet (9) and tighten sufficiently to prevent handwheel (3)

NOTE

from turning due to vibration, etc. install bonnet (9) on upper diaphragm case.

4. Place handwheel (3) over stem. Install lock washer

(2) and tighten nut (1).

5. Reinstall HOD assembly on actuator.

Figure 1 - Direct Diaphragm Actuator/ HOD

+ 11 hidden pages

Leslie Controls 135R User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual