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DIAPHRAGM ACTUATOR

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

TABLE OF CONTENTS

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

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

ASSEMBLE DIRECT (SPRING TO RETRACT) ACTUATOR TO EQUIPMENT ...........................................................................................2

ASSEMBLE REVERSE (SPRING TO EXTEND) ACTUATOR TO EQUIPMENT........................................................................................... 2

SETTING ACTUATOR STROKE .......................................................................................................................................................... 2

SETTING THE ACTUATOR SPRING LOAD .......................................................................................................................................... 2

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

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

GENERAL.........................................................................................................................................................................................3

DIRECT ACTUATOR DISASSEMBLY .................................................................................................................................................. 3

DIRECT ACTUATOR REASSEMBLY ................................................................................................................................................... 3

DIRECT ACTUATOR HOD DISASSEMBLY.........................................................................................................................................4

DIRECT ACTUATOR HOD REASSEMBLY.......................................................................................................................................... 4

REVERSE ACTUATOR DISASSEMBLY .............................................................................................................................................10

REVERSE ACTUATOR REASSEMBLY............................................................................................................................................... 10

REVERSE ACTUATOR HOD DISASSEMBLY .................................................................................................................................... 10

REVERSE ACTUATOR HOD REASSEMBLY .....................................................................................................................................11

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

ILLUSTRATION INDEX

FIGURE 1 - DIRECT DIAPHRAGM ACTUATOR/ HOD.............................................................................................................................6

FIGURE 2 - EXTERNAL VIEW OF DIRECT ACTING DIAPHRAGM ACTUATOR .........................................................................................8

FIGURE 3 - REVERSE DIAPHRAGM ACTUATOR/ HOD ........................................................................................................................ 12

FIGURE 4 - DISENGAGING HANDSCREW DISC FROM NUT ..................................................................................................................13

FIGURE 5 - EXTERNAL VIEW OF REVERSE ACTING DIAPHRAGM ACTUATOR..................................................................................... 13

12501 Telecom Drive, Tampa Florida 33637

Installation, Operating and

Maintenance Instructions

Supplement

10/0.5.1

Rev. 1

Summary of content (17 pages)

PAGE 1
2501 Telecom Drive, Tampa Florida 33637 Installation, Operating and Maintenance Instructions Supplement 10/0.5.1 Rev. 1 DIAPHRAGM ACTUATOR 35(R), 55(R), 85(R), 135(R) TABLE OF CONTENTS SCOPE...............................................................................................................................................................................................2 INSTALLATION.................................................................................................................
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SCOPE 5. CAUTION! Assemble Reverse (Spring to extend) Actuator to Equipment 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. 1. Ensure that there is no spring tension on actuator by "unscrewing" spring adjusting nut (40). (See Fig 3) 2.
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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!) 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.
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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) (see Fig 1) 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. 8.
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from turning due to vibration, etc. install bonnet (9) on upper diaphragm case. 4. 5. Place handwheel (3) over stem. Install lock washer (2) and tighten nut (1). 5 Reinstall HOD assembly on actuator.
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Figure 1 - Direct Diaphragm Actuator/ HOD 6
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DIRECT ACTING PARTS LIST 7
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Figure 2 - External View of Direct Acting Diaphragm Actuator 8
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DIAPHRAGM ACTUATORS – DIRECT ACTING DIMENSIONS IN INCHES AND MILLIMETERS SIZE DIAPHRAGM ACTUATOR 35 in mm in 55 mm in 55A mm in 85 mm in 85A mm in 85* mm in 135 mm 135(1-1/4) in Dia. Stem mm MAX TRAV EL ¾ 19.0 1-1/2 38.1 1-1/2 38.1 2-1/8 54.0 2-1/8 54.0 2-1/8 54.0 3 76.2 3 76.2 J J-J L M N-1 N-2 N-3 P R S T U V W 9-1/4 235.0 12 304.8 12 304.8 14-3/4 374.7 14-3/4 374.7 14-3/4 374.7 18 457.2 18 457.2 3-15/16 100.0 5-1/16 128.6 5-1/16 128.6 6-1/4 158.8 6-1/4 158.8 6-1/4 158.8 9 228.6 9 228.
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2. Reverse Actuator Disassembly (see Fig 3) 3. CAUTION! Spring load must be completely removed before proceeding or injury/death can occur. 1. Remove nuts/bolts (18,19), upper diaphragm case (15) and diaphragm (20). 2. Insert (3/4, 7/8, 0.745, 0.995) in diameter rod through the hole in Yoke (34) and actuator stem (35) to prevent stem from rotating. NOTE: If this step is not done then permanent damage will occur to lower stem boot.
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2. Screw handscrew (4) into the bonnet as far as it will go. 3. Remove nuts and bolts (18,19 see Fig 3) from upper diaphragm case (14). 3. 4. 4. 5. 5. Lift diaphragm case (14) while moving the case to one side so that handscrew disc assembly can be disengaged from diaphragm nut (8) by passing it through the slot in the diaphragm nut. (see Fig 4) NOTE: Clean all parts and replace any that are worn or damaged.
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Figure 3 - Reverse Diaphragm Actuator/ HOD 12
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Figure 4 - Disengaging Handscrew Disc from Nut Figure 5 - External View of Reverse Acting Diaphragm Actuator 13
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DIAPHRAGM ACTUATORS – REVERSE ACTING ACTUATOR SIZE in 35R mm in 55R mm in 55AR mm in 85R mm in 85R* mm 85AR in mm in 135R mm 135R in (1-1/4) mm MAX TRAVEL ¾ 19.0 1-1/2 38.1 1-1/2 38.1 2-1/8 54.0 2-1/8 54.3 2-1/8 54.0 3 76.2 3 76.2 DIMENSIONS IN INCHES AND MILLIMETERS N-2 N-3 P R S J L M J-J N 9-1/4 235.0 12 304.8 12 304.8 14-3/4 374.7 14-3/4 374.7 14-3/4 374.7 18 457.2 18 457.2 12-3/8 314.3 18 457.2 18 457.2 23-1/4 590.6 23-7/8 606.4 25-7/8 657.2 32-1/4 819.2 32-1/4 819.2 9-7/8 250.8 14-1/4 362.
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REVERSE ACTING PARTS LIST 15
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TROUBLESHOOTING Problem Possible Cause Equipment not shutting off or it does not appear to be enough force when air is removed from the actuator. When air is supplied to the actuator the actuator is not fully stroking or giving enough load. Not enough spring load. Check the spring load by following section on "Setting the Actuator Spring Load". When air is removed from the actuator the actuator does not return to either the open or closed position.
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It is solely responsibility of system designer and user to select products and materials suitable for their specific application requirements and to ensure proper installation, operation and maintenance of these products. Assistance shall be afforded with selection of materials based on technical information supplied to Leslie Controls Inc.; however, system designer and user retain final responsibility.