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Leslie 55R Installation, Operating And Maintenance Instructions

Diaphragm actuator
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12501 Telecom Drive, Tampa Florida 33637
DIAPHRAGM ACTUATOR
SCOPE...............................................................................................................................................................................................2
INSTALLATION..............................................................................................................................................................................2
OPERATION ....................................................................................................................................................................................3
MAINTENANCE..............................................................................................................................................................................3
.........................................................................................................................................................................................3
TROUBLESHOOTING .................................................................................................................................................................16
F
1 - D
D
IGURE
IRECT
IAPHRAGM
F
2 - E
V
IGURE
XTERNAL
IEW OF
F
3 - R
D
IGURE
EVERSE
IAPHRAGM
F
4 - D
H
IGURE
ISENGAGING
F
5 - E
V
IGURE
XTERNAL
IEW OF
Installation, Operating and
Maintenance Instructions
35(R), 55(R), 85(R), 135(R)

TABLE OF CONTENTS

..........................................................................................................................................................2
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..................................................................................................................................................3
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.........................................................................................................................................4
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.............................................................................................................................................10
...............................................................................................................................................10
....................................................................................................................................10
.....................................................................................................................................11
ILLUSTRATION INDEX
A
/ HOD.............................................................................................................................6
CTUATOR
D
A
D
IRECT
CTING
IAPHRAGM
A
/ HOD ........................................................................................................................12
CTUATOR
D
N
ANDSCREW
ISC FROM
UT
R
A
D
EVERSE
CTING
IAPHRAGM
Supplement
...........................................................................................2
...........................................................................................2
A
.........................................................................................8
CTUATOR
..................................................................................................................13
A
.....................................................................................13
CTUATOR
1
10/0.5.1
Rev. 1

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  • Page 1: Table Of Contents

    Installation, Operating and 10/0.5.1 Maintenance Instructions Rev. 1 Supplement 12501 Telecom Drive, Tampa Florida 33637 DIAPHRAGM ACTUATOR 35(R), 55(R), 85(R), 135(R) TABLE OF CONTENTS SCOPE.......................................2 INSTALLATION....................................2 ...................2 SSEMBLE IRECT PRING TO RETRACT CTUATOR TO QUIPMENT ...................2 SSEMBLE EVERSE PRING TO EXTEND...

  • Page 2: Scope

    (43) as shown. (See Fig 3) retract) Actuator to Equipment Setting the Actuator Spring Load Ensure that there is no spring tension on actuator by "unscrewing" spring adjusting nut (35). (see Fig 1) adjust load given failure mode...

  • Page 3: Operation

    Ensure that instrument air assembly. is being used to operate actuator. See equipment instructions for proper operation of assembly. Remove spring adjustment nut (35). MAINTENANCE Remove lower diaphragm case screws (26). Direct Actuator Reassembly General...

  • Page 4: Direct Actuator Hod Disassembly

    Install spring adjusting nut (35) and thread it all the Direct Actuator HOD way down as shown. Disassembly Install springs (28,29). (see Fig 1) Install diaphragm disc nut (16 only showing in Fig 3) and diaphragm disc (24). (See table 2)
  • Page 5 from turning due to vibration, etc. install bonnet (9) Reinstall HOD assembly on actuator. on upper diaphragm case. Place handwheel (3) over stem. Install lock washer (2) and tighten nut (1).
  • Page 6 Figure 1 - Direct Diaphragm Actuator/ HOD...
  • Page 7 DIRECT ACTING PARTS LIST...
  • Page 8 Figure 2 - External View of Direct Acting Diaphragm Actuator...
  • Page 9 IRON ¾ 9-1/4 3-15/16 12-3/8 12-3/8 6-1/4 2-1/2 2-1/2 5-1/2 1-3/8 3-13/16 9/16 4-13/16 2.687 11/16 ¼ 20 lb 35 lb 3/8-24 19.0 235.0 100.0 314.3 314.3 158.8 63.5 63.5 139.7 34.9 96.8 14.3 122.2 68.2 17.5 9.1 kg 15.9 kg...

  • Page 10: Reverse Actuator Disassembly

    (24) through holes in diaphragm occur to lower stem boot. For 35 actuator use a case (21) and stem seal (29) and tighten as wrench on wrench flats to prevent stem from described below.

  • Page 11: Reverse Actuator Hod Reassembly

    Screw handscrew (4) into the bonnet as far as it Tighten nuts and bolts (18,19 see Fig 3) into upper will go. diaphragm case (14). Screw handscrew (4) up through bonnet (7). Remove nuts and bolts (18,19 see Fig 3) from upper diaphragm case (14).
  • Page 12 Figure 3 - Reverse Diaphragm Actuator/ HOD...
  • Page 13 Figure 4 - Disengaging Handscrew Disc from Nut Figure 5 - External View of Reverse Acting Diaphragm Actuator...
  • Page 14 DIAPHRAGM ACTUATORS – REVERSE ACTING DIMENSIONS IN INCHES AND MILLIMETERS ACTUATOR NET WT** SIZE TRAVEL IRON ALUM. ¾ 9-1/4 12-3/8 9-7/8 3-15/16 6-1/4 2-1/2 2-1/2 1-3/4 3-13/16 9/16 4-13/16 2.687 11/16 ¼ 30 lb 20 lb 3/8-24 19.0 235.0 314.3 250.8 100.0 158.8...
  • Page 15 REVERSE ACTING PARTS LIST...

  • Page 16: Troubleshooting

    TROUBLESHOOTING Problem Possible Cause Equipment not shutting off or it does not appear Not enough spring load. Check the spring load by following section to be enough force when air is removed from the on "Setting the Actuator Spring Load". actuator.
  • Page 17 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. Designer should consider applicable Codes, material compatibility, product ratings and application details in selection and application.

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