Emerson Bettis CBB Series Service Instructions Manual

Service Instructions

137465E Rev. F

May 2012

CBB-Series Spring Return Pneumatic Actuators

Service Instructions

137465E Rev. F

Table of Contents

Section 1: Introduction

1.1 General service information .......................................................................... 1

1.2 Denitions .................................................................................................... 2

1.3 General safety information ............................................................................ 2

1.4 Bettis reference materials .............................................................................. 3

1.5 Service support items ................................................................................... 3

1.6 Lubrication requirements .............................................................................. 3

1.7 General tool information ............................................................................... 3

1.8 Actuator weight ............................................................................................ 4

Section 2: Actuator disassembly

2.1 General disassembly ...................................................................................... 5

2.2 Spring cylinder disassembly ........................................................................... 6

2.3 Housing disassembly ..................................................................................... 8

Table of Contents

May 2012

Section 3: Actuator reassembly

3.1 General reassembly ....................................................................................... 9

3.2 Housing reassembly .................................................................................... 10

3.3 Spring cylinder reassembly .......................................................................... 12

Section 4: Actuator Testing

4.1 Actuator testing .......................................................................................... 15

4.2 Return to service ......................................................................................... 16

4.3 Pressure requirement & limitations for CBB-SR actuators ............................. 16

Section 5: Document Revision ��������������������������������������������17

Appendix A: List of Tables ���������������������������������������������������18

Appendix B: List of Drawings ����������������������������������������������19

B.1 Part No. 152230, CBBXXX-SRX Assembly Dwg ............................................ 19

B.2 Part No. 152608, CBBXXX-SRX-M3HW Assembly Dwg ................................ 20

Table of Contents

I

Section 1: Introduction

May 2012

Section 1: Introduction

1�1 General service information

1.1.1 This service procedure is offered as a guide to enable general maintenance to be
performed on Bettis CBB-SR double acting series actuators.
The following is a list of general CBB-SR models numbers.

Table 1� CBB-SR Model numbers

MODEL (1) MODEL (1) MODEL (1)

315 315-M3 315-M3HW
420 420-M3 420-M3HW
520 520-M3 520-M3HW
525 525-M3 525-M3HW
725 725-M3 725-M3HW

(1) Also includes actuator models with –10 and –11 as a sufx

Service Instructions

137465E Rev. F

NOTE:

When the actuator model number has “-S” as a sufx then the actuator is special and may

have some differences that may not be included in this procedure.

1.1.2 Normal recommended service interval for this actuator series is ve years.

NOTE:

Storage time is counted as part of the service interval.

1.1.3 This procedure is applicable with the understanding that all electrical power and
pneumatic pressure has been removed from the actuator.

1.1.4 Remove all piping and mounted accessories that will interfere with the module(s)
that are to be worked on.

1.1.5 This procedure should only be implemented by a technically competent technician
who should take care to observe good workmanship practices.

1.1.6 Numbers in parentheses, ( ) indicate the bubble number (reference number) used
on the Bettis Assembly Drawing and Actuator Parts List.

1.1.7 When removing seals from seal grooves, use a commercial seal removing tool or a
small screwdriver with sharp corners rounded off.

1.1.8 Use a non-hardening thread sealant on all pipe threads.

CAUTION: APPLICATION OF THREAD SEALANT

Apply the thread sealant per the manufacture’s instructions.

1

Introduction

Service Instructions

137465E Rev. F

1.1.9 Bettis recommends that disassembly of the actuator should be done in a clean
area on a workbench.

1�2 Definitions

WARNING:

If not observed, user incurs a high risk of severe damage to actuator and/or fatal injury to
personnel.

CAUTION:

If not observed, user may incur damage to actuator and/or injury to personnel.

NOTE:

Advisory and information comments provided to assist maintenance personnel to carry out
maintenance procedures.

Section 1: Introduction

May 2012

NOTE:

This product is only intended for use in large-scale xed installations excluded from the

scope of Directive 2011/65/EU on the restriction of the use of certain hazardous substances
in electrical and electronic equipment (RoHS 2).

M3: ES:

Jackscrew or jackscrew assembly. Extended Stop(s)

1�3 General safety information

1.3.1 Products supplied by Bettis, in its “as shipped” condition, are intrinsically safe if the
instructions contained within this Service Instruction are strictly adhered to and

executed by well trained, equipped, prepared and competent personnel.

WARNING:

For the protection of personnel working on Bettis actuators, this procedure should be
reviewed and implemented for safe disassembly and reassembly. Close attention should be
noted to the WARNINGS, CAUTIONS and NOTES contained in this procedure.

WARNING:

This procedure should not supersede or replace any customer’s plant safety or work

procedures. If a conict arises between this procedure and the customer’s procedures the

differences should be resolved in writing between an authorized customers representative
and an authorized Bettis representative.

Introduction

2

Section 1: Introduction

May 2012

1�4 Bettis reference materials

1.4.1 CBBXXX Assembly Drawing use part number 152230.

1.4.2 CBBXXX-M3HW Assembly Drawing use part number 152608.

1�5 Service support items

1.5.1 Bettis Service Kit.

1.5.2 Commercial leak testing solution.

1.5.3 Non-hardening thread sealant.

1�6 Lubrication requirements

1.6.1 The actuator should be re-lubricated at the beginning of each service interval
using the following recommended lubricants.

Service Instructions

137465E Rev. F

NOTE:

Lubricants other than those listed in steps 1.6.2 should not be used without prior written ap­proval of Bettis Product Engineering. The lubricant item number on some assembly drawings is
item (5) while the Bettis service kits lubricant item number is item number (500).

1.6.2 All temperature services (-50°F to +350°F)/(-45.5°C to 176.6°C) use Bettis ESL-5
lubricant. ESL-5 lubricant is contained in the Bettis Module Service Kit in tubes and
the tubes are marked ESL-4,5 & 10 lubricant.

1�7 General tool information

1.7.1 All threads on CBB series actuators are Inch Unied and NPT.

1.7.2 All tools/Hexagons are American Standard inch. Two adjustable wrenches, Allen
wrench set, small standard screwdriver with sharp edges rounded off, medium size

standard screwdriver, diagonal cutting pliers, external snap ring pliers, at le, drive

ratchet / deepwell socket set and torque wrench (up to 2,000 inch pounds / 226 N-m).

3

Introduction

Service Instructions

137465E Rev. F

1�8 Actuator weight

Table 2� Actuator weight

Section 1: Introduction

May 2012

Actuator
Model

Approximate weight (3)

Actuator
Model

Approximate weight (3)

CBB LB KG CBB LB KG

315-SR40 (1) 22 10.0 520-SR40 (1) 45 20.4
315-SR60 (1) 23 10.4 520-SR60 (1) 48 21.8
315-SR80 (1) 26 11.8 520-SR80 (1) 49 22.2
315-SR100 (1) 25 11.4 520-SR100 (1) 53 24.0
415-SR40 (1) 27 12.2 525-SR40 (2) 62 28.1
415-SR60 (1) 29 13.2 525-SR60 (2) 65 29.5
415-SR80 (1) 30 13.6 525-SR80 (2) 65 29.5
415-SR100 (1) 31 14.1 525-SR100 (2) 67 30.4
420-SR40 (1) 37 16.8 725-SR40 (2) 97 44.0
420-SR60 (1) 39 17.7 725-SR60 (2) 98 44.5
420-SR80 (1) 40 18.1 725-SR80 (2) 104 47.2
420-SR100 (1) 41 18.6 725-SR100 (2) 107 48.5

(1) When model has -M3HW add 2.0 pounds / 0.9 kilograms.
(2) When model has -M3HW add 4.0 pounds / 1.8 kilograms.
(3) Weight is for bare actuator without accessories or valve adaptation.

Introduction

4

Section 2: Actuator Disassembly

May 2012

Section 2: Actuator disassembly

2�1 General disassembly

WARNING: DANGEROUS GAS AND/OR LIQUIDS

It is possible, that the actuator may contain a dangerous gas and/or liquids. Ensure that all
proper measures have been taken to prevent exposure or release of these types of contami­nants before commencing any work.

CAUTION: PRESSURE

Pressure applied to the actuator is not to exceed the maximum operating pressure rating

listed on the actuator name tag.

Service Instructions

137465E Rev. F

NOTE:

Before starting the general disassembly of the actuator it is a good practice to operate
actuator with the pressure used by the customer to operate the actuator during normal
operation. Notate and record any abnormal symptoms such as jerky or erratic operation.

2.1.1 Remove all operating pressure from actuator, allowing the spring to stroke. The
spring will rotate the yoke to its fail position.

2.1.2 Record the settings of stop screw / ES / M3 jackscrews (1-70) and stop screw / ES
(4-30) before they are loosened or removed.

NOTE:

In place of stop screws the actuator may be equipped with one or two ES (ES = Extended

Stops) or one M3/M3HW (1-70) located on outboard end of housing (1-10).

5

Actuator Disassembly

Service Instructions

137465E Rev. F

Section 2: Actuator Disassembly

2�2 Spring cylinder disassembly

NOTE:

Review Section 2 steps 2.1.1 through 2.1.2 before proceeding with cylinder disassembly.

CAUTION: SPRINGS ARE PRELOADED

The spring in CBB Series Spring Return Actuators are preloaded.

WARNING: POTENTIALLY DANGEROUS DISASSEMBLY

Actuator must be disassembled in the following manner.

2.2.1 Remove hex nut (1-80) as follows: CBB315 through 725 standard housing stop

screw or extended stop (ES) use step 2.2.1.1. CBB315-SR-M3/M3HW through

CBB725-SR-M3/M3HW use step 2.2.1.2.

2.2.1.1 For CBB315 through 725 housing stop screw or extended stop screw

(ES):

2.2.1.1.1 Loosen and remove hex nut (1-80) and washer (1-90) from stop
screw (1-70) located in housing (1-10).

2.2.1.1.2 Remove stop screw (1-70) located in housing (1-10).

2.2.1.2 For CBB315/420/520/525/725-SR-M3 or M3HW:

2.2.1.2.1 Remove retainer ring (12-30) and groove pin (12-20) from

optional hex drive hub or from hand wheel (12-10).

2.2.1.2.2 Remove optional hex drive hub or handwheel (12-10) from M3
jackscrew (1-70).

2.2.1.2.3 Loosen and remove hex nut (1-80) from M3 jackscrew (1-70).

May 2012

NOTE:

CBB420,520,525,725-SR-M3 or M3HW models: the M3 jackscrew (1-70) can not be removed now.
The M3 jackscrew used in these models can be removed later in this procedure per step 2.3.7.

2.2.2 Loosen and remove hex nut (4-40) and washer (4-90) from end cap stop screw

(4-30) or from end cap extended stop (4-30).

NOTE:

Extended stop or end cap stop screw (4-30) does not require removal from end cap (4-20)
unless replacing with a new extended stop or stop screw.

2.2.3 Remove breather (30) from end cap (4-20).

2.2.4 Remove acorn nut (8-20) and gasket seal (5-50) from end cap (4-20).

2.2.5 Use a ratchet and socket on the welded nut, located on the housing end of center bar
assembly (8-10), rotate center bar assembly (8-10) counter-clockwise (CCW). This
will cause end cap (4-20) to gradually unscrew from center bar assembly (8-10).

Actuator Disassembly

6

Section 2: Actuator Disassembly

May 2012

NOTE:

The end cap (4-20) can be held in position by holding the end cap (4-20) with an adjustable
wrench.

2.2.6 Continue to rotate center bar assembly (8-10) counter-clockwise (CCW) until the
spring preload is eliminated. As preload is reduced it may be necessary to keep end
cap (4-20) from turning.

2.2.7 After the spring preload is eliminated, unscrew and remove end cap (4-20) from
center bar assembly (8-10).

2.2.8 Remove spring (4-70) from within spring cylinder (4-10).

2.2.9 Hold torque shaft (1-30) and pull spring cylinder (4-10) away from housing (1-10);
slide spring cylinder over piston (4-50) and remove.

2.2.10 Remove spacer (1-110) from center bar assembly (8-10).

2.2.11 Pull piston (4-50) out of housing (1-10) and carefully slide piston off of center bar
assembly (8-10).

NOTE:

Piston (4-50) is an assembly made up of one roll pin and one yoke pin; do not attempt to
disassemble the piston assembly.

Service Instructions

137465E Rev. F

2.2.12 On models CBB415-SR, CBB520-SR, and CBB725-SR remove cylinder adapter (4-15).

7

Actuator Disassembly

Service Instructions

137465E Rev. F

2�3 Housing disassembly

2.3.1 Remove center bar assembly (8-10) from housing (1-10).

2.3.2 Remove both retaining rings (1-60) from torque shaft (1-30). On the CBB, remove
washers (1-65) from housing.

2.3.3 The following steps may be required before disassembly can continue.

2.3.3.1 If torque shaft (1-30) has any raised burrs or sharp edges they should be

removed.

NOTE:

When removing burrs and sharp edges, remove as little metal as possible.

2.3.3.2 If there is excessive paint build-up on torque shaft (1-30) it should be removed.

2.3.4 Remove the torque shaft (1-30) by pushing it out one side of housing (1-10).

2.3.5 Remove yoke key (1-40) and yoke key spring (1-50) from torque shaft (1-30).

2.3.6 Remove yoke (1-20) from housing (1-10).

2.3.7 Actuator models CBB315-SR with a M3 or M3HW mounted in the outboard end of
housing (1-10) remove M3 jackscrew (1-70) from housing (1-10).

Section 2: Actuator Disassembly

May 2012

NOTE:

The M3 jackscrew (1-70) will be removed from the inside of housing (1-10).

2.3.8 Actuator models CBB420, 520, 525, 725 with a M3 or M3HW mounted in the
outboard end of housing (1-10) complete steps 2.3.8.1 and 2.3.8.2.

2.3.8.1 Remove retainer ring (2-40) from M3 adapter (1-90).

2.3.8.2 Remove M3 adapter (1-90) from housing (1-10).

NOTE:

The M3 adapter will be removed from the inside of housing (1-10) with the M3 jackscrew.

Actuator Disassembly

8

Section 3: Actuator Reassembly

May 2012

Section 3: Actuator reassembly

3�1 General reassembly

CAUTION: CHECK SHELF LIFE OF SEALS

Only new seals that are still within the seals expectant shelf life should be installed into the

actuator being refurbished.

3.1.1 Remove and discard all old seals and gaskets.

3.1.2 All parts should be cleaned to remove all dirt and other foreign material prior to
inspection.

3.1.3 All parts should be thoroughly inspected for excessive wear, stress cracking,
galling and pitting. Attention should be directed to threads, sealing surfaces
and areas that will be subjected to sliding or rotating motion. Sealing surfaces of
the cylinder, torque shaft and center bar must be free of deep scratches, pitting,

corrosion and blistering or aking coating. On the CBB models, there are two
O-Rings on the torque shaft and two extra O-Rings beneath the washers on the

housing. These items MUST be replaced upon re-assembly

Service Instructions

137465E Rev. F

NOTE:

Prior to installing new seals: Fit the torque shaft snap ring groove with installation rings
that come with the CBB service kits. These rings help guide the torque-shaft through the
housing and seals which will prevent seal damage. First, take out both old seals, then install
the rings onto the shaft, and then install seals in housing. Once this is done, remove install
rings and proceed. See LCD PAK installation instructions, Part Number 153955, for details.

Coat torque shaft LCD PAK seals (2-20) with lubricant and install in one of the grooves
located in the torque shaft bore of the housing (1-10).

The cup/lip of torque shaft seal will be installed facing inward into the housing. For the CBB,
coat the torque-shaft O-Ring (2-25) with grease upon installation.

The following steps used to reassemble the following models: CBB315, 420, 520, 525 and

725. Use assembly drawing part numbers 129738 and 152230 for this section.

CAUTION: REPLACE WITH NEW PARTS.

Actuator parts that reect any of the above listed characteristics may need replacement

with new parts.

3.1.4 INSTALLATION LUBRICATION INSTRUCTIONS: Use the correct lubrication as

dened in Section 1 step 1.6.

3.1.4.1 Before installation coat all moving parts with lubricant.

3.1.4.2 Coat all seals with lubricant, before installing into seal grooves.

9

Actuator Resassembly

Service Instructions

137465E Rev. F

3�2 Housing reassembly

NOTE:

In section 3.2 where the step indicates to "lubricate, coat or apply lubricant", use lubricant

as identied in Section 1 step 1.6 for lubricating the part being installed.

Review Section 3 steps 3.1.1 through 3.1.4 before proceeding with housing reassembly.

Housing M3 jackscrew (1-70) installation: Use steps 3.2.1 for CBB315/415-SR-M3 and steps

3.2.2 for CBB420/520/525/725-SR-M3 includes M3HW models.

3.2.1 M3 JACKSCREW INSTALLATION FOR CBB315/415-SR-M3.

3.2.1.1 Apply a light coating of lubricant to the threads of M3 jackscrew (1-70).

NOTE:

M3 jackscrew (1-70) will be installed from the inside of housing (1-10).

Section 3: Actuator Reassembly

May 2012

3.2.1.2 Insert and rotate M3 jackscrew (1-70) into housing (1-10). NOTE: Rotate

the M3 jackscrew into the housing until the inboard end of the M3
jackscrew is up against the inside of housing (1-10).

3.2.1.3 Install O-ring seal (2-30) onto M3 jackscrew (1-70) until it is ush with the

housing.

3.2.1.4 Install hex nut (1-80) onto M3 jackscrew (1-70) until hand tight.

3.2.2 M3 JACKSCREW INSTALLATION FOR CBB420/520/525/725-SR-M3.

3.2.2.1 Apply a coating of lubricant to outer diameter and inner diameter threads

of M3 adapter (1-90).

3.2.2.2 Coat O-ring seal (2-45) with lubricant and install into outer diameter seal

groove located in the M3 adapter (1-90).

3.2.2.3 Apply a light coating of lubricant to the threads of M3 jackscrew (1-70).

3.2.2.4 Install and rotate the M3 jackscrew (1-70) into M3 adapter (1-90).

NOTE:

Rotate the M3 jackscrew into the adapter until the inboard end of the jackscrew is up
against the adapter.

3.2.2.5 Install M3 adapter (1-90) into housing (1-10).

NOTE:

The M3 adapter will be installed from the inside of housing (1-10).

3.2.2.6 Install retainer ring (2-40) onto groove in M3 adapter (1-90).

3.2.2.7 Install o-ring seal (2-30) onto M3 jackscrew (1-70).

Actuator Resassembly

10

Section 3: Actuator Reassembly

May 2012

NOTE:

Move the o-ring seal (2-30) down the M3 jackscrew until it is next to the M3 adapter.

3.2.2.8 Install hex nut (1-80) onto M3 jackscrew (1-70).

NOTE:

Rotate the hex nut down the M3 jackscrew until it is next to the M3 adapter.

3.2.3 Apply a coating of lubricant to the torque shaft holes located on each side of
housing (1-10).

3.2.4 Coat torque shaft wiper seals (2-20) with lubricant and install in one of the grooves
located in the torque shaft bore of the housing (1-10).

NOTE:

The cup of torque shaft wiper seal will be installed facing down into the housing.

Service Instructions

137465E Rev. F

3.2.5 Coat yoke (1-20) with lubricant and install into housing (1-10). Apply a generous
amount of lubricant to the slots in the arms of yoke (1-20).

3.2.6 Insert the yoke key spring (1-50), with the ends pointing down, into the slot in the
torque shaft (1-30) and place the yoke key (1-40) on top of the spring with the
tapered side outward.

WARNING: YOKE KEY INSTALLATION

If the yoke key (1-40) is installed incorrectly the housing may be damaged when next disassembly

occurs. Refer to assembly drawing for correct yoke key spring and yoke key orientation.

3.2.7 Hold the yoke key (1-40) down with your thumb; insert the torque shaft (1-30) by
gently rotating it into the housing (1-10) and yoke (1-20) on the opposite side of
the installed torque shaft wiper seal (2-20)

NOTE:

Torque Shaft should be installed with key rotated 180 degrees opposite yoke key slot.

When the torque shaft (1-30) is ush with the housing (1-10) push the torque
shaft (1-30) through until the empty seal groove is exposed. Install the other

torque shaft wiper seal (2-20) into the groove

NOTE:

The cup of the torque shaft wiper seal again needs to be installed facing inward into the housing.

Two new retaining rings (1-60) are contained in the Bettis CBB Service Kits

11

Actuator Resassembly

Service Instructions

137465E Rev. F

3.2.8 Install one of the new retaining rings (1-60) onto the exposed end of the torque

CAUTION: TORQUE SHAFT INSTALLATION

Rotate the torque shaft until the yoke key snaps into the yoke keyway.

3.2.9 Rotate the torque shaft (1-30) so that the arms of yoke (1-20) point outward.

3.2.10 Coat O-ring seal (5-20) with lubricant and install into inner diameter seal groove

3.2.11 Coat entire length of center bar (8-10) with lubricant including the threads.

3.2.12 Insert center bar assembly (8-10) into the center hole of housing (1-10). Slide

Section 3: Actuator Reassembly

May 2012

shaft, making certain it is properly seated in the groove of the torque shaft (1-30).
Gently push and rotate the torque shaft (1-30) until the retaining ring (1-60) is
pressed against the housing (1-10). Install the other retaining ring (1-60) to the
other side of the torque shaft (1-30).

located in the center bar hole of housing (1-10).

center bar assembly through housing until center bar assembly nut is ush against

the housing (1-10).

WARNING: CENTER BAR ASSEMBLY INSTALLATION

Care should be taken during installation of center bar assembly so as to not scratch it.

3.2.13 Re-coat center bar assembly (8-10) with lubricant.

3.2.14 Coat one o-ring seal (5-10) with lubricant and install onto outer diameter ange
located on housing adapter end of housing (1-10).

3.2.15 Actuators equipped with cylinder adapter (4-15), models CBB415-SR, CBB520-SR
and CBB725-SR, do steps 3.2.15.1 and 3.2.15.2.

3.2.15.1 Install cylinder adapter (4-15) onto housing ange, with the stepped outer

diameter, of cylinder adapter (4-15), facing away from housing (1-10).

3.2.15.2 Install one o-seal (5-15) onto stepped diameter of cylinder adapter (4-15).

3�3 Spring cylinder reassembly

3.3.1 Coat piston (4-50) outer diameter seal groove, inner diameter seal groove, head of

piston and exposed ends of yoke pin with lubricant.

3.3.2 Coat o-ring seal (5-20) with lubricant and install in the internal seal groove in the
head of piston (4-50).

3.3.3 Coat seal (5-40) with lubricant and install into outer diameter seal groove of piston

(4-50). The piston seal will t very loosely in the outer diameter seal groove.

3.3.4 Install bushing (1-100) between the two arms of yoke (1-20).

3.3.5 With the piston head facing away from housing (1-10) and with yoke pin up, install
piston (4-50) onto center bar assembly (8-10).

3.3.6 Carefully slide piston (4-50) along center bar (8-10) until yoke pin engages the
yoke slots.

Actuator Resassembly

12

Section 3: Actuator Reassembly

May 2012

NOTE:

While holding the center bar assembly ush against the housing, push piston (4-50) into

housing (1-10) as far as the piston will go.

3.3.7 Apply a coating of lubricant to entire bore of spring cylinder (4-10).

3.3.8 Spring cylinder installation:

3.3.8.1 For CBB415-SR, CBB520-SR and CBB725-SR models install the lubricated

spring cylinder (4-10) over the piston and up-against the o-ring seal on

the stepped diameter ange of cylinder adapter (4-15).

3.3.8.2 For CBB315-SR, CBB420-SR and CBB525-SR models install the lubricated

spring cylinder (4-10) over the piston and up-against the o-ring seal on

the ange of housing (1-10).

3.3.9 Install spacer (1-110) onto center bar assembly (8-10).

3.3.10 Apply a coat of lubricant to the spring (4-70). Install the spring into the spring
cylinder by carefully sliding the spring into the open spring cylinder end until the
spring contacts the head of piston (4-50).

3.3.11 End cap seal installation.

3.3.11.1 For CBB415-SR, CBB520-SR and CBB725-SR models install O-ring seal

(5-15) onto end cap (4-20).

3.3.11.2 For CBB315-SR, CBB420-SR and CBB525-SR models install O-ring seal

(5-10) onto end cap (4-20).

3.3.12 If removed install stop screw / ES (4-30) into end cap (4-20) and set stop screw to

the approximated setting recorded in Section 2 step 2.1.2.

Service Instructions

137465E Rev. F

NOTE:

Position spring cylinder (4-10) so that spring tag (4-60) will be adjacent to accessory
mounting pads located on the actuator housing.

3.3.13 Install end cap (4-20) onto center bar assembly (8-10) by rotating the end cap in a
clockwise direction.

3.3.14 Position the end cap (4-20) so that the breather port is at the bottom and the stop
screw / ES (4-30) is at the top.

WARNING: END CAP INSTALLATION

Do not allow end cap (4-20) to rotate during center bar assembly tightening. The end cap
must maintain the position as described in step 3.3.14.

3.3.15 Keep end cap (4-20) from turning by holding end cap with an adjustable wrench.

3.3.16 Using a ratchet and socket on the center bar assembly nut, rotate center bar
assembly clockwise (CW). This will cause end cap (4-20) to gradually screw further
onto center bar assembly (8-10).

13

Actuator Resassembly

Service Instructions

137465E Rev. F

3.3.17 Continue to rotate center bar assembly (8-10) clockwise until spring (4-70) is fully

3.3.18 Tighten center bar assembly (8-10) to the proper torque as specied in the

Table 3� Tightening torque center bar

Actuator Model Maximum Torque

CBB FT� LBS� N-m

315-SR and 415-SR 55 75
420-SR and 520-SR 100 136
525-SR and 725-SR 130 176

3.3.19 Place seal gasket (5-50) on the exposed end of the center bar assembly (8-10).

3.3.20 Place acorn nut (8-20) on the exposed outboard end of center bar assembly (8-10)

3.3.21 Install the stop screw / ES / M3 jackscrew (1-70) for CBB315/415-SR-M3 and non

3.3.22 Install o-ring seal (5-30) onto the stop screw / ES (4-30) until it is ush with the end

3.3.23 Install new washer (4-90) onto the stop screw / ES (4-30) until it is close to the end

3.3.24 Install hex nut (4-40) onto stop screw / ES (4-30) until hand tight.

3.3.25 Adjust stop screw / ES / M3 jackscrew (1-70) and stop screw / ES (4-30) back to

3.3.26 M3 hex drive hub or handwheel installation as follows:

Section 3: Actuator Reassembly

May 2012

compressed, the spring cylinder is seated against the ange of housing (1-10) or

adapter (4-15) and end cap (4-20) is properly seated in spring cylinder (4-10).

following chart.

and tighten securely.

M3 model actuators as follows:

3.3.21.1 Install stop screw / ES / M3 jackscrew (1-70) into housing (1-10) and

screw in until stop screw contacts the piston.

3.3.21.2 Install o-ring seal (2-30) onto stop screw / ES / M3 jackscrew (1-70) until

it is ush with the housing.

3.3.21.3 Install hex nut (1-80) onto stop screw (1-70) until hand tight.

cap.

cap

setting recorded in Section 2 step 2.1.2 under General Disassembly. Tighten both

stop screw hex nuts (4-40) and (1-80) securely, while holding stop screw (1-70)

and (4-30).

3.3.26.1 Install hex drive hub (12-10) or handwheel (12-10) onto M3 jackscrew

(1-70) and align the “hole” of the drive hub with the “hole” located in the
M3 jackscrew.

3.3.26.2 Install retainer ring (12-30) and groove pin (12-20) into the hex drive hub

(12-10) or handwheel (12-10).

Actuator Resassembly

14

Section 4: Actuator Testing

May 2012

Section 4: Actuator Testing

4�1 Actuator testing

4.1.1 Leak Test - General - A small amount of leakage may be tolerated. Generally, a
small bubble which breaks about three seconds after starting to form is considered
acceptable.

4.1.2 All areas, where leakage to atmosphere may occur, are to be checked using a
commercial leak testing solution.

WARNING: MAXIMUM OPERATING PRESSURE

Pressure is not to exceed the maximum operating pressure rating listed on the serial num­ber tag (20).

4.1.3 All leak testing will use the customer normal operating pressure or the actuator
name tag normal operating pressure (NOP).

Service Instructions

137465E Rev. F

NOTE:

When testing the actuator use a proper adjusted regulator to apply pressure to the actuator.

4.1.4 Before testing for leaks, apply and release the pressure listed in step 4.1.3 to the

housing side of the piston. Repeat this cycle approximately ve times. This will

allow the new seals to seek their service condition.

4.1.5 Apply the pressure listed in step 4.1.3 to the housing side of the piston and allow
the actuator to stabilize.

4.1.6 Apply a leak testing solution to the following areas:

4.1.6.1 Spring cylinder to housing joint on CBB315-SR, CBB420-SR, and CBB525-

SR or spring cylinder to cylinder adapter to housing joints on CBB415-SR,
CBB520-SR, and CBB725-SR actuators.

4.1.6.2 On the out board end of housing (1-10) at the center bar assembly nut.

Checks the center bar to housing o-ring seal (5-20).

4.1.6.3 Housing stop screw O-ring seal (2-30).

4.1.6.4 Torque shaft (1-30) to housing (1-10) interface. Check rod wiper seals (2-20).

4.1.6.5 End cap (4-20) port hole. Check the piston to cylinder seal (5-40) and

piston to center bar seal (5-20).

4.1.6.6 Remove pressure from pressure inlet port in the housing (1-10).

4.1.7 If an actuator was disassembled and repaired as a result of this procedure, the
above leakage test must be performed again.

4.1.8 Operational (Functional) Test: This test is used to verify proper function of the actuator.

15

Actuator Testing

Service Instructions

137465E Rev. F

NOTE:

This test is to be done off of the valve or when valve stem is not coupled to the actuator
torque shaft.

4.1.8.1 Adjust the pressure regulator to the pressure rating that the customer

uses to operate the actuator during normal service.

4.1.8.2 Apply the above pressure to the actuator and allow the actuator to

stabilize. The actuator should stroke a full 90° travel with the stops
properly set.

Section 4: Actuator Testing

4�2 Return to service

4.2.1 Install breather (30) into end cap (4-20).

4.2.2 After the actuator is installed back on the valve all accessories should be hooked
up and tested for proper operation and replaced, if found defective.

4�3 Pressure requirement & limitations for

May 2012

CBB-SR actuators

Table 4� Pressure requirement and limitations

Actuator
Model

CBB Psig Barg Psig Barg CBB Psig Barg Psig Barg

315-SR40 40 2.76 155 10.69 520-SR40 40 2.76 110 7.59
315-SR60 60 4.14 152 10.48 520-SR60 60 4.14 116 8.00
315-SR80 80 5.52 150 10.34 520-SR80 80 5.52 120 8.27
315-SR100 100 6.89 164 11.31 520-SR100 100 6.89 132 9.10
415-SR40 40 2.76 100 6.89 525-SR40 40 2.76 146 10.07
415-SR60 60 4.14 112 7.72 525-SR60 60 4.14 151 10.41
415-SR80 80 5.52 117 8.07 525-SR80 80 5.52 159 10.96
415-SR100 100 6.89 114 7.86 525-SR100 100 6.89 163 11.24
420-SR40 40 2.76 157 10.83 725-SR40 40 2.76 102 7.03
420-SR60 60 4.14 156 10.76 725-SR60 60 4.14 115 7.95
420-SR80 80 5.52 161 11.10 725-SR80 80 5.52 124 8.55
420-SR100 100 6.89 166 11.45 725-SR100 100 6.89 124 8.55

Nominal

Operating

Pressure

Maximum
Operating

Pressure

Actuator
Model

Nominal

Operating

Pressure

Maximum
Operating

Pressure

Actuator Testing

16

Section 5: Document Revision

May 2012

Section 5: Document Revision

Table 5� Revision overview

ECN DATE REV BY * DATE

19527 April 2007 C COMPILED D.Blahnik 6/30/09
40548 12 May 2009 D CHECKED B.Jumawan 6/30/09

40677 6/30/09 E APPROVED K.Chin 6/30/09

0526 001 5/08/2012 F COMPILED C. Rico 5/08/12

* Signatures on le Bettis Actuator & Controls, Waller, Texas

Service Instructions

137465E Rev. F

17

Document Revision

Service Instructions

137465E Rev. F

Appendix A: List of Tables

Table 1 CBB-SR Model numbers ......................................................................................... 1

Table 2 Actuator weight .................................................................................................... 4

Table 3 Tightening torque center bar ............................................................................... 14

Table 4 Pressure requirement and limitations .................................................................. 16

Table 5 Revision overview ................................................................................................ 17

Appendix

May 2012

Appendix

18

Appendix

May 2012

Service Instructions

137465E Rev. F

Appendix B: List of Drawings

B�1 Part No� 152230, CBBXXX-SRX Assembly Dwg

19

Appendix

Service Instructions

137465E Rev. F

B�2 Part No� 152608, CBBXXX-SRX-M3HW

Assembly Dwg

Appendix

May 2012

Appendix

20

For complete list of sales and manufacturing sites, please visit

www.emerson.com/actuationtechnologieslocations or contact us at
[e-mail]

World Area Configuration Centers (WACC) offer sales support, service,
inventory and commissioning to our global customers.
Choose the WACC or sales office nearest you:

NORTH & SOUTH AMERICA

19200 Northwest Freeway
Houston TX 77065
USA
T [phone]
F [phone]

Av. Hollingsworth
325 Iporanga Sorocaba
SP 18087-105
Brazil
T [phone]
F [phone]

ASIA PACIFIC

No. 9 Gul Road
#01-02 Singapore 629361
T [phone]
F [phone]

No. 1 Lai Yuan Road
Wuqing Development Area
Tianjin 301700
P. R. China
T [phone]
F [phone]

MIDDLE EAST & AFRICA

P. O. Box 17033
Dubai
United Arab Emirates
T [phone]
F [phone]

P. O. Box 10305
Jubail 31961
Saudi Arabia
T [phone]
F [phone]

24 Angus Crescent
Longmeadow Business Estate East
P.O. Box 6908 Greenstone
1616 Modderfontein Extension 5
South Africa
T [phone]
F [phone]

EUROPE

Berenyi u. 72- 100
Videoton Industry Park
Building #230
Székesfehérvár 8000
Hungary
T [phone]
F [phone]

www.emerson.com/bettis

©2017 Emerson. All rights reserved.

The Emerson logo is a trademark and service mark of Emerson Electric Co.
Bettis

TM

is a mark of one of the Emerson family of companies.

All other marks are property of their respective owners.

The contents of this publication are presented for information purposes
only, and while every effort has been made to ensure their accuracy,
they are not to be construed as warranties or guarantees, express or
implied, regarding the products or services described herein or their use
or applicability. All sales are governed by our terms and conditions, which
are available on request. We reserve the right to modify or improve the
designs or specifications of our products at any time without notice.

World Area Configuration Centers (WACC) offer sales support, service,
inventory and commissioning to our global customers.
Choose the WACC or sales office nearest you:

NORTH & SOUTH AMERICA

19200 Northwest Freeway
Houston TX 77065
USA
T [phone]
F [phone]

Av. Hollingsworth
325 Iporanga Sorocaba
SP 18087-105
Brazil
T [phone]

MIDDLE EAST & AFRICA

P. O. Box 17033
Dubai
United Arab Emirates
T [phone]
F [phone]

P. O. Box 10305
Jubail 31961
Saudi Arabia
T [phone]
F [phone]

F [phone]

24 Angus Crescent

ASIA PACIFIC

Longmeadow Business Estate East

P.O. Box 6908 Greenstone
No. 9 Gul Road
#01-02 Singapore 629361
T [phone]
F [phone]

No. 1 Lai Yuan Road

1616 Modderfontein Extension 5

South Africa

T [phone]

F [phone]

EUROPE

Wuqing Development Area
Tianjin 301700
P. R. China
T [phone]
F [phone]

Berenyi u. 72- 100

Videoton Industry Park

Building #230

Székesfehérvár 8000

Hungary

T [phone]

F [phone]

For complete list of sales and manufacturing sites, please visit

www.emerson.com/actuationtechnologieslocations or contact us at
[e-mail]

www.emerson.com/bettis

©2017 Emerson. All rights reserved.

The Emerson logo is a trademark and service mark of Emerson Electric Co.

TM

is a mark of one of the Emerson family of companies.

Bettis
All other marks are property of their respective owners.

The contents of this publication are presented for information purposes
only, and while every effort has been made to ensure their accuracy,
they are not to be construed as warranties or guarantees, express or
implied, regarding the products or services described herein or their use
or applicability. All sales are governed by our terms and conditions, which
are available on request. We reserve the right to modify or improve the
designs or specifications of our products at any time without notice.