Schlumberger CAMERON LEDEEN VA Series User manual

CAMERON
®
LEDEEN
Quarter Turn Actuator
VA Series – Pneumatic
Installation, O eration and Maintenance Manual
05/02/2018 Initial release Garberi M. Cerati S.
DATE ISSUE PREPARED BY APPROVED BY

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All the information contained in this manual is the exclusive ro erty of Cameron. Any re roduction or use of
the calculations, drawings, hotogra hs, rocedures or instructions, either ex ressed or im lied, is forbidden
without the written ermission of Cameron or its authorized agent.
Release – March 2018
© 2018 Cameron, a Schlumberger Com any

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PREFACE
The rocedures included in this book are to be erformed in conjunction with the requirements and
recommendations outlined in API S ecifications. Any re airs to the equi ment covered by this book should be
done by an authorized Cameron service re resentative. Cameron will not be res onsible for loss or ex ense
resulting from any failure of equi ment or any damage to any ro erty or death or injury to any erson resulting
in whole or in art from re airs erformed by anyone other than authorized Cameron ersonnel. Such
unauthorized re airs shall also serve to terminate any contractual or other warranty, if any, on the equi ment
and may also result in equi ment no longer meeting a licable requirements.
File co ies of this manual are maintained. Revisions and/or additions will be made as deemed necessary by
Cameron. The drawings in this book are not drawn to scale, but the dimensions shown are accurate.
This book covers Cameron roducts.
Cameron, a Schlumberger Com any
Ledeen Facility
Via L. Gandini 4
27058 Voghera (PV) – Italy
cameron.slb.com

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NOTES:

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CONTENTS
I. GENERAL .......................................................................................................................................................................................5
A. Legend for Safety Symbols .......................................................................................................................................................5
B. Original S are Parts ..................................................................................................................................................................6
C. O erative Staff ..........................................................................................................................................................................6
D. Damages Derived From Use .....................................................................................................................................................6
E. Interru tions and sus ending ....................................................................................................................................................6
F. Modification of The Actuator .....................................................................................................................................................6
G. Actuator Dis osal ......................................................................................................................................................................6
H. Safety of the Power Su ly Connection (If A licable) .............................................................................................................7
I. Safety Recommendations .........................................................................................................................................................7
J. Electrostatic Discharges Prevention .........................................................................................................................................7
K. Actuator Marking (According to 2014/34/EU Directive) .............................................................................................................8
L. Actuator Name late descri tion ...............................................................................................................................................9
II. RECEIVING,STORAGE AND HANDLING ..............................................................................................................................10
A. Preliminary Verification U on Recei t of Material ...................................................................................................................10
B. Storage and Preservation .......................................................................................................................................................10
C. Handling ..................................................................................................................................................................................12
III. OPERATION ...........................................................................................................................................................................17
IV. COMMISSIONING ..................................................................................................................................................................17
A. Mounting to Valve (With Ada tor Piece) .................................................................................................................................17
B. Adjustment ..............................................................................................................................................................................18
C. Actuator Start u .....................................................................................................................................................................22
V. MAINTENANCE ......................................................................................................................................................................24
A. Routine Maintenance ..............................................................................................................................................................24
B. Extraordinary Maintenance .....................................................................................................................................................24
C. Instruction for re lacement of Dynamic seals .........................................................................................................................25
VI. TROUBLE SHOOTING & REMEDIES ....................................................................................................................................28
VII. DISASSEMBLY AND REASSEMBLY .....................................................................................................................................29
A. Disassembly: ...........................................................................................................................................................................33
B. Reassembly: ...........................................................................................................................................................................37
C. Adjustment after assembly: .....................................................................................................................................................40
VIII. SPARE PARTS .......................................................................................................................................................................41

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I. GENERAL
•Kee this manual for future reference.
•Please kee this manual near the actuator so that it is available for consultation.
•For questions or clarifications lease contact cameron.slb.com
•To get / request new co ies of the manual lease contact cameron.slb.com
•The manufacturer reserves the right to modify , without rior notice, the characteristics of the equi ment
described in this ublication and is not obligated to u date any roducts and manuals reviously issued.
A. Legend f r Safety Symb ls
Ex lanation of Warning Symbols (Where A licable)
Before carrying out any o eration on the actuator, the electric ower
su ly (if resent) must be shut-off.
Risk of ex losion: before carrying out any o eration on the actuator, the
actuator must be isolated from the neumatic su ly source.
Before carrying out any o eration on the actuator, the control grou (if
resent) must be discharged from the ressure therein tra ed, articular
care shall be taken on storage tanks and ressure filters.
Every o eration on the actuator must be erformed by qualified ersonnel,
equi ed with safety clothes and devices (gloves, helmet, glasses, etc.).
During the o eration on the actuator, the o erator must ay attention to
the resence of liquids otentially noxious for the health and the
environment.

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B. Original Spare Parts
The use of any non-genuine Cameron s are arts by customer exem ts Cameron from any res onsibility
for indemnity on claims.
C. Operative Staff
The maintenance-staff assigned to Cameron's Ledeen roducts must have the qualified technical
re aration to erform the function. The lack of the above-mentioned re aration, included therein the
unavailability to attend adequate training courses by s ecialized Cameron technicians at its worksho ,
cannot be charged to the com any Cameron, who will be considered exem t from any res onsibility on
claims. Also the lack of knowledge, by the o erative ersonnel, of the manuals and instruction books
su lied by Cameron in the languages indicated in the su ly contract, cannot be im uted to Cameron.
D. Damages Derived Fr m Use
Any damage derived from corrosion, fouling, ollution, oxidation, wear, or gradual deterioration of the
materials, for which the customer did not s ecify the ada tability limits, will be at the Customer’s own loss.
E. Interrupti ns and suspending
Damages derived from a eriod of instrument use failure, during which the instrument wasn’t in
maintenance condition to assure a erfect reservation, will be at the customer’s own loss.
F. M dificati n f The Actuat r
Damages derived from any modification made by the customer without rior authorization from Cameron,
es ecially if not in accordance to the initial conditions established in the buying order, will be at the
customer’s own loss.
G. Actuat r Disp sal
To finally dis ose the actuator at the end of its o erating life, lease carry out the following o erations:
•O en the frame enclosure.
•Remove the lubricants taking care not to ollute the environment.
•Clean the frame internally using a mixture of water and degreasing soa .
•Dis ose of the cleaning fluid and lubricants extracted from the actuator according to
the local laws regarding the dis osal of waste material.
•After the actuator’s dis osal, all casings must be sent to the scra ing service.
•In case of re lacement of any art, it must be handled and dis osed of as listed in
the owner's manual.

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H. Safety f the P wer Supply C nnecti n (If Applicable)
Before carrying out any o eration on the actuator, check that the ower su ly is off.
Before connecting the actuator:
•Verify the absence of the ower su ly and always connect the ground cable to the actuator first.
•Check that the ower su ly line characteristics are in accordance with the name late and
installation manual data.
I. Safety Rec mmendati ns
Check that the ground resistance com lies with the limits allowed by the National Laws relevant to the
country where the actuator is installed.
If the actuator is stored/installed in a hazardous area, do not use o en flames and/or devices that could
cause s arks.
At the end of any intervention on the actuator lease check that all the boxes and covers are ro erly
closed.
The o erators assigned to the actuator's maintenance must be authorized ersonnel or otherwise must
have attended a training course dedicated to the use and maintenance of the actuator.
J. Electr static Discharges Preventi n
The actuator handling must be carried out using the handling ring su lied with the actuator. In order to
revent the electro-static charges storage, attention must be aid during the cleaning of any external
com onent made from lastic material.
The lastic material must be cleaned only with a dam cloth or with antistatic roducts.

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K. Actuat r Marking (Acc rding t 2014/34/EU Directive)
Please refer to the following exam le of actuator marking:
II 2 G c Tx
Where:
= symbol of conformity to the EU a licable directives
= ATEX symbol
II = grou II (surface)
2 = a aratus of category 2
G = ex losive atmos here with resence of gas, va ours, fogs
c = ty e of rotection
Tx = tem erature class
Hazard us area Installati n categ ry acc rding t ATEX Directive N . 2014/34/EU
Gas, fog or va ours Zone 1 2 G
Gas, fog or va ours Zone 2 3 G
ε
X
ε
X

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L. Actuat r Name plate descripti n
The actuator name late shows the following data:
1. Contract No.
2. Purchase Order No.
3. Customer item
4. Valve and Actuator Tag Number
5. Actuator S/N
6. Actuator model
7. Valve size and rating
8. Actuator su ly ressure (*)
9. Action on air failure
10. Ambient tem erature range
11. Year of manufacturing
12. “CE” mark (*)
13. Ex losion- roof marking, followed by the a aratus grou and category
14. ATEX Technical File No. (*)
15. Name and com lete address of the manufacturer
(*) where applicable
See for reference the name late drawing below.

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II. RECEIVING,STORAGE AND HANDLING
A. Preliminary Verificati n Up n Receipt f Material
Warning:
At recei t of the material:
1. Check the com leteness of the su ly, by referring to the acking list;
2. Check the tag number, serial number and technical information in the name late with reference to the
order acknowledgement.
3. The actuators are delivered with lugged connections. Which must remain lugged if not utilized or must
be re- lugged with the relevant lug or reconnected after any testing o eration.
4. Carry out a reliminary verification in order to ensure:
• The integrity of the material and the absence of damages;
• The integrity of the ainting. If necessary, carry out the aint touch u , by following the instructions
of the ainting s ecification ( lease refer to the technical documentation);
• The resence of the lugs on all the neumatic and (where resent) electric connections.
B. St rage and Preservati n
Warning:
If the storage of the actuator is necessary, lease follow these instructions.
Storage conditions
The actuator must be stored in a warehouse adequately rotected against harmful environment.
The recommended ambient tem erature is : Minimum - 20°C / Maximum 70°C
Relative Humidity : Maximum + 90%
Indoor storage
• Restore the aintwork of the com onents that have been damaged during trans ort
• Place the actuators on a wood surface allet so as to revent direct contact with the
ground.
• Kee the electric com onents(where resent) erfectly dry.
Outdoor storage
• Restore the aintwork of the com onents that have been damaged during trans ort
• Place the actuators above the ground level.

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• To store the actuator at tem eratures below of –30°C and u to +70°C, it is necessary to carry out
additional checks and tests from time to time, de ending on the ambient conditions.
Preservation conditions
The rocedures that must be erformed to the equi ment during storage to assure ro er o eration of
the equi ment after installation are the following:
• Place the actuators on a wood surface allet so as to revent direct contact with the ground.
• Protect all un ainted arts with grease.
Note : Before installing the actuator, perform one complete operation (opening and closing) to
verify it strokes properly.

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C. Handling
Pr per Lifting, Weights and Dimensi ns, Fastener T rque Chart
Warning:
Important: These instructions refer to the lifting of the actuator only, not assembled on the valve.
Do not attempt to lift the actuator-valve assembly by using the lifting points of the actuator:
The lifting equi ment consists on commercial chains and slings of adequate dimensions, according to the weight
of the actuator.
Refer to the following sheets for standard commercial equi ment.

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LIFTING DEVICES MAXIMUM WORKLOAD
Chains

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LIFTING DEVICES MAXIMUM WORKLOAD
Slings

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16

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III. OPERATION
This series neumatic actuator is designed for on-off and control service and is a licable over a wide range of
ressure, tem erature and environments.
The scotch yoke mechanism converts the linear motion of neumatic iston into valve rotation by the actuator
shaft. The scotch yoke mechanism generates high torque at start (0° degree) and the end (90° degree) of the
valve stroke.
Pressure is a lied via su ly orts in either end of the cylinder assembly onto istons running within the
cylinder liner. This enables the scotch yoke mechanism of the actuator to drive in both directions.
IV. COMMISSIONING
A. M unting t Valve (With Adapt r Piece)
The actuator can be assembled on to of the valve flange either by using the actuator-housing flange with
threaded holes, or by the inter osition of a ro er mounting hardware.
Warning:
Note: No special tools are re uired for these operations, but only some Allen wrenches and hexagonal
wrenches of the re uired sizes.
Bef re the installati n, please check that the actuat r was n t damaged during the transp rtati n.
The actuator along with the ada ter assembly is shi ed to mount on the valve. In case it is necessary to
assemble the actuator onto the valve, roceed as follows:
The actuator drive sleeve is generally connected to the valve stem by an insert bush or a stem extension.
The assembly osition of the actuator, with reference to the valve, must com ly with the lant requirements
(cylinder axis arallel or er endicular to the i eline axis).
a. Check that the cou ling dimensions of the valve flange and those of the valve stem meet the cou ling
dimensions of the actuator.
b. Clean the flange of the valve and remove anything that may revent a erfect adherence to the actuator.
c. Lubricate the shaft of the valve with oil or grease.
d. Set the actuator osition same as that of the valve osition, either o en or close.

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e. Lift the actuator by means of adequate slings as er the weight of the actuator to render the erfect
horizontal (this is very im ortant for easy cou ling) utilizing the existing lifting oint on the actuator.( refer
to ages no. 12-15)
f. Clean the ada ter iece flange and remove anything that may revent a erfect adherence to the valve.
g. Lower the actuator onto the valve in such a way that the ada ter, assembled on the valve stem, enters
the actuator drive sleeve. This cou ling must take lace without forcing and only with the weight of the
actuator.
Note: Caution should be taken while connecting the adapter piece on to the valve stem.
h. Check if the holes of the valve flange and ada ter flange meets as well as any dowel ins (if rovided).
If yes secure the actuator to the valve using correctly sized fasteners.
i. Uniformly tighten the fasteners of the ada ter flange.(refer to age no. 16 for tightening torque of
fasteners).
B. Adjustment
Warning:
Note: No special tools are re uired for these operations, but only some hexagonal wrenches of the re uired
sizes.
Important: The actuator is shipped with a preliminary adjustment and not on the real valve stroke. If it is
necessary to change the adjustment, proceed as follows:
a) Adjustment f mechanical st ps f r SRC r DA m dels : (see figure 1)
After loosening relevant locking nut (item 2 for closing side or item 36 for o ening side) rotate the
hexagonal screw (item 1 for closing side or item 35 for o ening side) clockwise or counter-clockwise for
adjusting the angular stroke.
By rotating the Hexagonal screw clockwise, the angular stroke is reduced. Rotating counter-clockwise,
the angular stroke is increased.
For SRO models, the closing side adjusting screw will be on the cylinder or s ring end while the o ening
side adjusting screw will be on the rod cover
Note: Paying attention to not remove completely the end stroke.
Note: In case of S ring return actuators, before adjusting the mechanical sto s, it is necessary to ressurize
the neumatic cylinder with low ressure in order to reduce the ressure rovided by the s ring thrust against
the mechanical sto to be adjusted.

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Figure 1
When the end cap seal need to be replaced (DA & SR) follow the instructions below:(see fig. 2)
1. Place the actuator in fail safe osition.
2. Remove any electric ower and ressure su ly.
3. Unthread the lock nut (item 36) and the sto screw (item 35) aying attention to not remove com letely
the end stroke.
Warning: Remember that a preloaded spring is included in the cylinder. (If SR Actuator)
4. Unthread the screws (item 45) with washer (item 46) in the ro er sequence and remove the end flange
(item 32) along with end stroke assembly.
5. Remove the circli (item 33) which holds the end stroke screw (item 35).
6. Remove the end stroke screw (item 36) with locking nut (item 35) from end flange. Then remove the
locking nut from the end stroke screw.
7. Remove the existing O-ring (item 34) and clean the groove of the locking nut.
8. Clean the surface of the end flange (item 32) of the cylinder.
9. Install the new O-ring on locking nut and a ly a grease film.
(suggested grease: Parker su er-o-lube or equivalent)
10. Install the locking nut into the sto screw and thread the sto screw assembly into the end flange and lock
it with circli .