Woodward 9904-257 Manuale utente

Product Manual 40134

(Revision A)

Original Instructions

Liquid Fuel Shutoff Valve

9904-257 and 9907-198

Installation and Operation Manual

General

Precautions

Read this entire manual and all other publications pertaining to the work to be

performed before installing, operating, or servicing this equipment.

Practice all plant and safety instructions and precautions.

Failure to follow instructions can cause personal injury and/or property damage.

Revisions

This publication may have been revised or updated since this copy was produced.

To verify that you have the latest revision, check manual 26311 , Revision Status &

Distribution Restrictions of Woodward Technical Publications, on the publications

page of the Woodward website:

www.woodward.com/publications

The latest version of most publications is available on the publications page. If

your publication is not there, please contact your customer service representative

to get the latest copy.

Proper Use

Any unauthorized modifications to or use of this equipment outside its specified

mechanical, electrical, or other operating limits may cause personal injury and/or

property damage, including damage to the equipment. Any such unauthorized

modifications: (i) constitute "misuse" and/or "negligence" within the meaning of

the product warranty thereby excluding warranty coverage for any resulting

damage, and (ii) invalidate product certifications or listings.

Translated

Publications

If the cover of this publication states "Translation of the Original Instructions"

please note:

The original source of this publication may have been updated since this

translation was made. Be sure to check manual 26311 , Revision Status &

Distribution Restrictions of Woodward Technical Publications, to verify whether

this translation is up to date. Out-of-date translations are marked with . Always

compare with the original for technical specifications and for proper and safe

installation and operation procedures.

Revisions—Changes in this publication since the last revision are indicated by a black line

alongside the text.

Woodward reserves the right to update any portion of this publication at any time. Information provided by Woodward is

believed to be correct and reliable. However, no responsibility is assumed by Woodward unless otherwise expressly

Manual 40134 Liquid Fuel Shutoff Valve

Woodward i

Contents

WARNINGS AND NOTICES............................................................................ II

ELECTROSTATIC DISCHARGE AWARENESS ..................................................III

CHAPTER 1. GENERAL INFORMATION...........................................................1

Safety Considerations ............................................................................................1

Shutoff Valve Description .......................................................................................1

CHAPTER 2. INSTALLATION..........................................................................3

Receiving................................................................................................................3

Mounting.................................................................................................................3

Electrical .................................................................................................................3

Maintenance ...........................................................................................................3

CHAPTER 3. PRINCIPLES OF OPERATION .....................................................5

CHAPTER 4. REPLACEMENT PARTS .............................................................8

CHAPTER 5. SERVICE OPTIONS .................................................................11

Product Service Options.......................................................................................11

Woodward Factory Servicing Options ..................................................................12

Returning Equipment for Repair...........................................................................12

Replacement Parts ...............................................................................................13

Engineering Services............................................................................................13

How to Contact Woodward...................................................................................14

Technical Assistance............................................................................................14

Illustrations and Tables

Figure 1-1. Liquid Fuel Shutoff Valve .................................................................... iv

Figure 2-1. Outline Drawing of Liquid Fuel Shutoff Valve ......................................4

Figure 3-1. Cross Section of Liquid Fuel Shutoff Valve .........................................6

Figure 3-2. Liquid Fuel Shutoff Valve Schematic ...................................................7

Figure 4-1. Liquid Fuel Shutoff Valve Exploded View ............................................9

Figure 4-2. Liquid Fuel Shutoff Valve Exploded View ..........................................10

Liquid Fuel Shutoff Valve Manual 40134

ii Woodward

Warnings and Notices

Important Definitions

This is the safety alert symbol. It is used to alert you to potential

personal injury hazards. Obey all safety messages that follow this

symbol to avoid possible injury or death.

DANGER—Indicates a hazardous situation which, if not avoided, will result

in death or serious injury.

WARNING—Indicates a hazardous situation which, if not avoided, could

result in death or serious injury.

CAUTION—Indicates a hazardous situation which, if not avoided, could

result in minor or moderate injury.

NOTICE—Indicates a hazard that could result in property damage only

(including damage to the control).

IMPORTANT—Designates an operating tip or maintenance suggestion.

Overspeed /

Overtemperature /

Overpressure

The engine, turbine, or other type of prime mover should be

equipped with an overspeed shutdown device to protect against

runaway or damage to the prime mover with possible personal injury,

loss of life, or property damage.

The overspeed shutdown device must be totally independent of the

prime mover control system. An overtemperature or overpressure

shutdown device may also be needed for safety, as appropriate.

Personal Protective

Equipment

The products described in this publication may present risks that

could lead to personal injury, loss of life, or property damage. Always

wear the appropriate personal protective equipment (PPE) for the job

at hand. Equipment that should be considered includes but is not

limited to:

Eye Protection

Hearing Protection

Hard Hat

Gloves

Safety Boots

Respirator

Always read the proper Material Safety Data Sheet (MSDS) for any

working fluid(s) and comply with recommended safety equipment.

Start-up

Be prepared to make an emergency shutdown when starting the

engine, turbine, or other type of prime mover, to protect against

runaway or overspeed with possible personal injury, loss of life, or

property damage.

Automotive

Applications

On- and off-highway Mobile Applications: Unless Woodward's control

functions as the supervisory control, customer should install a

system totally independent of the prime mover control system that

monitors for supervisory control of engine (and takes appropriate

action if supervisory control is lost) to protect against loss of engine

control with possible personal injury, loss of life, or property damage.

Manual 40134 Liquid Fuel Shutoff Valve

Woodward iii

Battery Charging

Device

To prevent damage to a control system that uses an alternator or

battery-charging device, make sure the charging device is turned off

before disconnecting the battery from the system.

Electrostatic Discharge Awareness

Electrostatic

Precautions

Electronic controls contain static-sensitive parts. Observe the

following precautions to prevent damage to these parts:

Discharge body static before handling the control (with power to

the control turned off, contact a grounded surface and maintain

contact while handling the control).

Avoid all plastic, vinyl, and Styrofoam (except antistatic versions)

around printed circuit boards.

Do not touch the components or conductors on a printed circuit

board with your hands or with conductive devices.

To prevent damage to electronic components caused by improper

handling, read and observe the precautions in Woodward manual

82715, Guide for Handling and Protection of Electronic Controls,

Printed Circuit Boards, and Modules.

Follow these precautions when working with or near the control.

1. Avoid the build-up of static electricity on your body by not wearing clothing

made of synthetic materials. Wear cotton or cotton-blend materials as much

as possible because these do not store static electric charges as much as

synthetics.

2. Do not remove the printed circuit board (PCB) from the control cabinet

unless absolutely necessary. If you must remove the PCB from the control

cabinet, follow these precautions:

Do not touch any part of the PCB except the edges.

Do not touch the electrical conductors, the connectors, or the

components with conductive devices or with your hands.

When replacing a PCB, keep the new PCB in the plastic antistatic

protective bag it comes in until you are ready to install it. Immediately

after removing the old PCB from the control cabinet, place it in the

antistatic protective bag.

Liquid Fuel Shutoff Valve Manual 40134

iv Woodward

Figure 1-1. Liquid Fuel Shutoff Valve

Manual 40134 Liquid Fuel Shutoff Valve

Woodward 1

Chapter 1.

General Information

Safety Considerations

The shutoff valve is a critical component for protection against

equipment failure and turbine overspeed. Routine inspection is

necessary for the protection of the turbine and/or the turbine

operators.

The shutoff valve is designed to protect the turbine should the

normal fuel control become inoperative for any reason. Critical

overspeed may occur should the valve fail to shut off fuel to the

turbine. Engine overspeed can cause serious mechanical damage as

well as personal injury or death.

Always use the shutoff valve to stop the turbine. This exercise provides proof of

the proper operation of the safety equipment.

Because of the critical function of the valve, it is mandatory that the operator

regularly monitor the valve whenever the turbine is shut down, as well as during

normal operation.

While the valve is closed, check for excessive leakage, either through the valve

or through the vent. Any leakage through the valve to the turbine should be

considered proof of wear and/or possible malfunction. The valve should be

immediately replaced and returned for factory service.

A minimal amount of leakage can be expected through the bypass connection of

the valve. Should the volume of leakage change appreciably, the valve should be

replaced and returned to a service facility.

Woodward recommends the installation of two shutoff valves per API-616.

Shutoff Valve Description

The Woodward High Speed Liquid Fuel Shutoff Valve is a three-way, two-stage

valve, designed to provide fuel bypass in 0.090 seconds or less after termination

of the solenoid current. Loss or termination of the electrical signal will result in all

fuel delivery to the valve being bypassed to the return system.

The valve is compatible with most liquid fuels, including diesel fuel, methanol,

ethanol, Jet "A", kerosene, #2 home heating oil, heated light crudes, and

residuals. The valve will accommodate contaminated fuels within prescribed

limits.

An inlet screen in the valve prevents contaminants in excess of 40 µm (nominal)

from damaging the pilot-valve section.

The shutoff valve housing is constructed of anodized aluminum. All moving

internal parts are hardened stainless steel.

Liquid Fuel Shutoff Valve Manual 40134

2 Woodward

Electrical Requirements

Voltage Nominal 24 Vdc, 125 Vdc,

115 Vac or 220 Vac

Power 15 W maximum

Resistance

to Ground 50 MΩminimum at 500 Vdc

General Specifications

Liquid Fuel Diesel fuel, methanol, ethanol,

Jet "A", kerosene, #2 home

heating oil, heated light crudes,

and residuals

Fuel

Temperature 0 to +250 °F (–18 to +121 °C)

Chemical All typical fuels. Call Woodward

Compatibility for special applications.

Rated Flow 30 000 lb/h (13 608 kg) of

MIL-C-7024 calibrating fluid at

70 °F (21 °C)

Cycle Life 10 000 cycles

Weight 21.5 lb (9.8 kg)

Construction Anodized aluminum housing;

hardened stainless steel

internal components

Fittings Fuel inlet, fuel outlet, and

bypass threaded for 1.625 (-20)

straight thread port

Electrical 0.500-14 NPTF conduit

connector with 10 ft (3 m) of

insulated conductor for field

wiring

Operating Specifications

Opening Time 0.4 seconds maximum after

admission of fuel and solenoid

current

Closing Time Within 0.09 seconds after the

solenoid is de-energized with

1200 psig (8274 kPa) fuel

applied to the inlet

Pressure Drop 53 psid (365 kPa) inlet to

discharge at 30 000 lb/h (13

608 kg)

90 psid (621 kPa) inlet to

bypass at 30 000 lb/h

(13 608 kg)

Internal Leakage:

Shutoff From inlet to discharge:

None

From inlet to bypass:

370 lb/h (168 kg) maximum at

800 psid (5516 kPa)

Reverse

Pressure

Condition 900 psig (6206 kPa)

Contaminants The shutoff valve will operate

satisfactorily when using fuel

contaminated with less than

0.01% by volume of salt-water

compound or 4% by weight of

NaCl and 96% water and solid

contamination of 10 grams per

1000 US gallons (2.6 g/1000 L)

composed of particle sizes up

to 40 µm.

Fluid Supply Normal: 1200 psig (8274 kPa)

Range Proof: 1800 psig (12 411 kPa)

Burst: 6000 psig (41 370 kPa)

Manual 40134 Liquid Fuel Shutoff Valve

Woodward 3

Chapter 2.

Installation

Receiving

The liquid fuel shutoff valve is tested with a non-corrosive liquid, drained and

packed in a foam-filled box for shipment. The unit may be stored for an extended

period in the original container.

Mounting

The valve is designed for installation in any attitude with two 3/8 inch or M10

bolts. (See the outline drawing, Figure 2-1, for location of the mounting holes and

of the valve.)

1.625 inch (-20) straight thread ports are provided for inlet, bypass and outlet

pipe connections. The bypass plumbing must be of equal size to the inlet and

unobstructed to assure positive shutoff by the valve.

Electrical

A 0.500 inch-14 NPTF conduit adapter and 10 ft (3 m) leads of shielded wire are

provided for the electrical connection. Connect the proper voltage to the two

wires extending from the conduit connector (see the outline drawing). Polarity is

not important.

Maintenance

Recommended: Disassembly for cleaning and inspection every 10 000 cycles or

3 years of operation, whichever occurs first. In case of contamination of the

interior passages, the valve may be disassembled and cleaned in the field by a

trained service technician.

Routinely check the shutdown switches or relays to be sure they are capable of

interrupting the electronic signal to the shutoff valve.

Always use the valve for routine shutdown as a check for continued

operation.

Liquid Fuel Shutoff Valve Manual 40134

4 Woodward

Figure 2-1. Outline Drawing of Liquid Fuel Shutoff Valve

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