Baker Hughes Masoneilan 7700P Manual de usuario

Baker Hughes Data Classification: Public

Masoneilan™

Type7700PPneumatic Positioner

Instruction Manual (Rev.A)

THESE INSTRUCTIONS PROVIDE THE CUSTOMER/OPERATOR WITH IMPORTANT

PROJECT-SPECIFIC REFERENCE INFORMATION IN ADDITION TO THE CUSTOMER/

OPERATOR’S NORMAL OPERATION AND MAINTENANCE PROCEDURES. SINCE

OPERATION AND MAINTENANCE PHILOSOPHIES VARY, BAKER HUGHES COMPANY

(AND ITS SUBSIDIARIES AND AFFILIATES) DOES NOT ATTEMPT TO DICTATE SPECIFIC

PROCEDURES, BUT TO PROVIDE BASIC LIMITATIONS AND REQUIREMENTS CREATED

BY THE TYPE OF EQUIPMENT PROVIDED.

THESE INSTRUCTIONS ASSUME THAT OPERATORS ALREADY HAVE A GENERAL

UNDERSTANDING OF THE REQUIREMENTS FOR SAFE OPERATION OF MECHANICAL

AND ELECTRICAL EQUIPMENT IN POTENTIALLY HAZARDOUS ENVIRONMENTS.

THEREFORE, THESE INSTRUCTIONS SHOULD BE INTERPRETED AND APPLIED IN

CONJUNCTION WITH THE SAFETY RULES AND REGULATIONS APPLICABLE AT THE

SITE AND THE PARTICULAR REQUIREMENTS FOR OPERATION OF OTHER EQUIPMENT

AT THE SITE.

THESE INSTRUCTIONS DO NOT PURPORT TO COVER ALL DETAILS OR VARIATIONS IN

EQUIPMENT NOR TO PROVIDE FOR EVERY POSSIBLE CONTINGENCY TO BE MET IN

CONNECTION WITH INSTALLATION, OPERATION OR MAINTENANCE. SHOULD

FURTHER INFORMATION BE DESIRED OR SHOULD PARTICULAR PROBLEMS ARISE

WHICH ARE NOT COVERED SUFFICIENTLY FOR THE CUSTOMER/OPERATOR'S

PURPOSES THE MATTER SHOULD BE REFERRED TO BAKER HUGHES.

THE RIGHTS, OBLIGATIONS AND LIABILITIES OF BAKER HUGHES AND THE

CUSTOMER/OPERATOR ARE STRICTLY LIMITED TO THOSE EXPRESSLY PROVIDED IN

THE CONTRACT RELATING TO THE SUPPLY OF THE EQUIPMENT. NO ADDITIONAL

REPRESENTATIONS OR WARRANTIES BY BAKER HUGHES REGARDING THE

EQUIPMENT OR ITS USE ARE GIVEN OR IMPLIED BY THE ISSUE OF THESE

INSTRUCTIONS.

THESE INSTRUCTIONS ARE FURNISHED TO THE CUSTOMER/OPERATOR SOLELY TO

ASSIST IN THE INSTALLATION, TESTING, OPERATION, AND/OR MAINTENANCE OF THE

EQUIPMENT DESCRIBED. THIS DOCUMENT SHALL NOT BE REPRODUCED IN WHOLE

OR IN PART WITHOUT THE WRITTEN APPROVAL OF BAKER HUGHES.

Contents

Warning........................................................................................................................................................ 4

1. Instrument Operation................................................................................................................. 5

2. Numbering System .................................................................................................................... 5

3. Technical Data............................................................................................................................ 5

3.1. Performances .................................................................................................................... 5

3.2. Schematic........................................................................................................................... 5

4. Assembly of a 7700P Positioner on a Valve.......................................................................... 7

5. Pneumatic Connection of Positioner 7700P.......................................................................... 7

6. Calibration of the 7700P Positioner......................................................................................... 7

7. Maintenance of the Positioner ................................................................................................. 7

WARNING

BEFORE installing, using or carrying out any maintenance tasks associated with this instrument,

READ THE INSTRUCTIONS CAREFULLY.

It is the end user's responsibility to:

•Verify material compatibility with the application

•Ensure proper use of fall protection when working at heights, per Safe Site Work

Practices

•Ensure use of proper Personal Protective Equipment

•Take the appropriate actions to ensure that site personnel who are performing

installation, commissioning and maintenance have been trained in proper site

procedures for working with and around equipment, per Safe Site Work Practices

Baker Hughes reserves the right to discontinue manufacture of any product or change

product materials, design, or specifications without notice.

Under certain operating conditions, the use of damaged instruments could cause a degradation of

the performances of the system which may lead to personal injury or death.

Use only genuine replacement parts, which are provided by the manufacturer, to guarantee the

proper working of the product.

1. Instrument Operation

The Model 7700P positioner operation principle is a force-balance mechanism:

•An entry force exerted by the double diaphragm under the effect of a pneumatic signal pressure

•An opposite force developed by a feedback spring. The tension of this spring varies with the

displacement of the actuator lever to which it is connected.

2. Numbering System

Unique positioner: 7700P

Different versions:

•Housing material:

oAluminum

oStainless steel

•Mounting:

oSingle lever: 28001

oAdjustable Cv: 28002

3. Technical Data

3.1. Performances

Performances

(% of the signal range)

Started point (closed valve)

2,0 %

Hysteresis (mid-stroke)

0,9 %

•Maximum service temperature range: -40°C to +85°C

•Storage temperature: -55°C to +90°C

3.2. Schematic

4. Assembly of a 7700P Positioner on a Valve

Note: Before installation, check that the device is undamaged. In the event of damage, replace the

defective parts with genuine manufacturer's replacement parts.

If the positioner is shipped alone, the user is responsible for its installation and pneumatic connections and its

calibration.

Please refer to 28000 Series Varipak instruction manual Ref. 30857 for more details.

5. Pneumatic Connection of Positioner 7700P

Make sure that the air supply pressure is suitable for the installation and for the instrument.

When using a positioner, make sure that the air supply pressure matches the one specified on the

serial plate without exceeding 275 kPa (40 psi).

Diameter of tubing required: 4 x 6 mm.

6. Calibration of the 7700P Positioner

•Comply with current national and local regulations for installation.

•Before carrying out any work on the device, power off the instrument.

The positioner assembled on valve is factory-calibrated, but if it is necessary to remake the calibration on

the site, it will be carried out by the customer according to the following general principles

•Make the pneumatic connections, see §5.

•The adjustment of the starting pressure is made by screw (K116). Calibrate the pneumatic signal

corresponding to the closing of the valve (3-15psi or 6-30psi). Turn the take-up screw (K116) until

the piston rod just begins to move (the plug leaves the contact with the seat ring).

•Tighten the locknut (K117).

7. Maintenance of the Positioner

•Comply with current national and local regulations for installation.

•Before carrying out any work on the device, power off the instrument.

•Make sure that the components of the instrument are not damaged. In the event of damage replace the

defective parts with genuine manufacturer's replacement parts.

•Pay particular attention of any defect of the housing.

•Avoid contact of the apparatus with aggressive substances which could damage the metallic or plastic

parts.

Direct Sales Office Locations

Australia

Brisbane

Phone: +61-7-3001-4319

Perth

Phone: +61-8-6595-7018

Melbourne

Phone: +61-3-8807-6002

Brazil

Phone: +55-19-2104-6900

China

Phone: +86-10-5738-8888

France

Courbevoie

Phone: +33-1-4904-9000

India

Mumbai

Phone: +91-22-8354790

New Delhi

Phone: +91-11-2-6164175

Italy

Phone: +39-081-7892-111

Japan

Tokyo

Phone: +81-03-6871-9008

Korea

Phone: +82-2-2274-0748

Malaysia

Phone: +60-3-2161-03228

Mexico

Phone: +52-55-3640-5060

Russia

Veliky Novgorod

Phone: +7-8162-55-7898

Moscow

Phone: +7-495-585-1276

Saudi Arabia

Phone: +966-3-341-0278

Singapore

Phone: +65-6861-6100

South Africa

Phone: +27-11-452-1550

South & Central America

and the Caribbean

Phone: +55-12-2134-1201

Spain

Phone: +34-935-877-605

United Arab Emirates

Phone: +971-4-8991-777

United Kingdom

Phone: +44-7919-382-156

United States

Houston, Texas

Phone: +1-713-966-3600

Find the nearest local Channel Partner in your area:

valves.bakerhughes.com/contact-us

Tech Field Support & Warranty:

Phone: +1-866-827-5378

valvesupport@bakerhughes.com

valves.bakerhughes.com

information on an “as is”basis for general information purposes. Baker Hughes does not make any

representation as to the accuracy or completeness of the information and makes no warranties of

any kind, specific, implied or oral, to the fullest extent permissible by law, including those of

merchantability and fitness for a particular purpose or use. Baker Hughes hereby disclaims any

and all liability for any direct, indirect, consequential or special damages, claims for lost profits, or

third party claims arising from the use of the information, whether a claim is asserted in contract,

tort, or otherwise. Baker Hughes reserves the right to make changes in specifications and features

shown herein, or discontinue the product described at any time without notice or obligation.

Contact your Baker Hughes representative for the most current information. The Baker Hughes

logo and Masoneilan are trademarks/is a trademark of Baker Hughes Company.

Other company names and product names used in this document are the registered trademarks or

trademarks of their respective owners.

BHMN-7700P-IOM-34602A-0221 02/2021

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