Emerson 350 series Instruction Manual

January 2006 350 Series Electrohydraulic Actuators

350 Series Electrohydraulic Actuators

(Obsolete Product)

Obsolete products may not be manufactured again in any Fisher location under any conditions. Recommended spare parts availability is guaranteed for 10 years after the last production on manufactured trim replacement parts and 5 years of best effort on die cast parts, elastomers, buyout

components, and electronic components. Postsale documents (such as instruction manuals) will be available on CD Rom and the Fishweb. Pre-sale documents (such as bulletins) for obsolete are not included on the Fishweb or CDROM.

Fisher is a mark owned by Fisher Controls International LLC, a member of the Emerson Process Management business division of Emerson Electric Co. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their respective owners.

The contents of this publication are presented for informational 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. We reserve the right to modify or improve the designs or specifications of such products at any time without notice.

Fisher does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Fisher product remains solely with the purchaser and end-user.

Emerson Process Management Fisher

Marshalltown, Iowa 50158 USA Cernay 68700 France Sao Paulo 05424 Brazil Singapore 128461

www.Fisher.com



Instruction Manual

Form 1387 June 2002

350 Series Electrohydraulic Actuators

Contents

Introduction 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Scope of Manual 2. . . . . . . . . . . . . . . . . . . . . . . . . . .

Description 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Type Number Description 2. . . . . . . . . . . . . . . . . . .

Specifications 2. . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Valve Body and Actuator 6. . . . . . . . . . . . . . . . . . . .

Hydraulic Fluid 6. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Connections 7. . . . . . . . . . . . . . . . . . . . . .

Power 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input Signal 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seal Drain-Off Connection 7. . . . . . . . . . . . . . . . . .

Startup 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Adjustments 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Zero/Span Calibration 7. . . . . . . . . . . . . . . . . . . . . .

Bypass Valve and Handwheel Operation

Bypass Valve 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bolt-On Handwheels 8. . . . . . . . . . . . . . . . . . . . . . .

Integrally Mounted Gear-Type Handwheels 9. . .

Speed Control Valve 9. . . . . . . . . . . . . . . . . . . .

Changing Actuator Action 10. . . . . . . . . . . .

Split-Range Operation 11. . . . . . . . . . . . . . . . .

Principle of Operation 11. . . . . . . . . . . . . . . . .

Lock in Last Position 11. . . . . . . . . . . . . . . . . . . . . .

Fault-Correction Guide 11. . . . . . . . . . . . . . . .

Maintenance 13. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removing Casing Plate Assembly 13. . . . . . . . . .

Cleaning Force Motor 14. . . . . . . . . . . . . . . . . . . . .

Cleaning Primary Restrictions 14. . . . . . . . . . . . . .

Checking and Adjusting Pump Pressure 14. . . . .

Adjusting Nozzles 15. . . . . . . . . . . . . . . . . . . . . . . . .

Low-Pressure Nozzles 15. . . . . . . . . . . . . . . . . . .

High-Pressure Nozzles 16. . . . . . . . . . . . . . . . . . .

Replacing Oil Seals 16. . . . . . . . . . . . . . . . . . . . . . .

Adaptor Plug O-Rings 16. . . . . . . . . . . . . . . . . . . .

Upper Piston Rod Seal and Piston Seals 16. . .

Lower Piston Rod Seal 17. . . . . . . . . . . . . . . . . . .

Handwheel Maintenance 17. . . . . . . . . . . . . . . . . . .

Bolt-On Handwheels 17. . . . . . . . . . . . . . . . . . . . .

Integrally Mounted Gear-Type Handwheels 18.

8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

W2286/IL

Figure 1. Type 350 Electrohydraulic Actuator with

Bolt-on Handwheel on Design ED Valve

Mounting Actuator and Adjusting Stem Connection

Type 350 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Type 354 Actuator Mounting 19. . . . . . . . . . . . . . .

Type 354 Valve Travel Adjustment 20. . . . . . . . . .

Changing Type 354 Actuator Mounting 21. . . . . .

Parts Ordering 21. . . . . . . . . . . . . . . . . . . . . . . . . .

Parts Kits 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts List 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Actuator 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

72 mm (2-13/16 Inch) Yoke Boss

Bolt-On Handwheel 26. . . . . . . . . . . . . . . . . . . . .

90 mm (3-9/16 Inch) Yoke Boss

Bolt-On Handwheel 30. . . . . . . . . . . . . . . . . . . . .

127 mm (5 Inch) Yoke Boss

Integral Handwheel 30. . . . . . . . . . . . . . . . . . . . .

90 mm (3-9/16 Inch) Yoke Boss

Integral Handwheel 30. . . . . . . . . . . . . . . . . . . . .

350 Actuator

18. . . . . . . . . . . . . . . . . . . . . .

www.Fisher.com

D100286X012

350 Actuator

Instruction Manual

Form 1387

June 2002

Introduction

Scope of Manual

This instruction manual includes installation, operation, maintenance, and parts ordering information for Type 350 (figure 1) and 354 electrohydraulic actuators with and without optional cylinder bypass valve and speed control valve. Coverage of handwheels for Type 350 actuators is also included. Refer to separate manuals for instructions covering the control valve and accessories.

No person may install, operate, or maintain a 350 Series actuator without first (1) being fully trained and qualified in valve, actuator, and accessory installation, operation, and maintenance, and (2) carefully reading and understanding the contents of this manual. If you have any questions about these instructions, contact your Fisher sales office before proceeding.

Description

The 350 Series electrohydraulic actuators are designed to operate sliding-stem and rotary-shaft control valves from standard electronic input signals and electric power supplies. These actuators contain

Table 1. Specifications

all the elements necessary for control valve operation in electronic control systems. The motor, pump, transducer, and positioner are included in the actuator casing.

For hazardous area applications, the actuator must be equipped with an explosion-proof motor and an intrinsically safe control circuit. Separate use of either an explosion proof motor or an intrinsically safe control circuit results in an actuator with no hazardous area rating. Refer to the motor nameplate and actuator nameplate for additional information.

Type Number Description

Type 350—Electrohydraulic control valve actuator

with threaded stem connection for use with sliding-stem control valves.

Type 354—Electrohydraulic control valve actuator with splined valve shaft connection for use with rotary-shaft control valves.

Specifications

Specifications for 350 Series actuators are shown in table 1. Some specifications may also be found on the actuator nameplate.

Input Signals

See table 2

Internal Resistance of Transducer Force Motor

See table 2

Power Supply Required

See table 3

Actuator Sizes

Type 350: See table 4 Type 354:

J Size 60 for 25.4, 31.8, 38.1, 44.5 or 50.8 mm

(1, 1-1/4, 1-1/2, 1-3/4 or 2 inch) valve shaft spline

(1)

Action

Actuators with standard control circuits are fieldreversible between

J direct (increasing input signal extends actuator

piston rod) and

J reverse (increasing input signal retracts

actuator piston rod). Actuators with intrinsically safe control circuits are not field reversible; either a direct- or reverse-acting coil is required.

Maximum Usable Output Thrust and Torque

diameter or

J Size 80 for 63.5 mm (2-1/2 inch) valve shaft

spline diameter

1. This term is defined in ISA S51.1.

2. Stroking speed with actuator operating a valve under no load.

3. Do not exceed the thrust and torque limits in this manual.

4. The temperature limits in this manual and in any applicable standard or code limitation should not be exceeded.

Type 350: See table 5 Type 354: See table 6

(3)

Instruction Manual

Form 1387 June 2002

350 Actuator

Table 1. Specifications (continued)

Bench Stroking Speed

J 8.6 mm/second (0.37 inches/second) for 8900

N (2000 pounds) output thrust or 318 NSm (2812 lbfSin) output torque and

J 3.8 mm/second (0.15 inches/second) for 22200

N (5000 pounds) output thrust or 794 NSm (7031 lbfSin) output torque

Maximum Actuator Travel

Type 350: See table 4 Type 354: 90 degrees

Pump Type

Positive-displacement, gear-type pump with relief valves.

Hydraulic Fluid Requirements

10.4 liters (11 quarts) of Type A automotive automatic transmission fluid. If the actuator is used in ambient temperatures below –4°C (25°F), use an aircraft-type hydraulic fluid that conforms to MIL-H-5606A specifications.

Operative Temperature

Weather-Proof Motor: –40 to 40°C (–40 to

104°F) Explosion-Proof Motor: –25 to 40°C (–13 to 104°F)

Performance

Hysteresis

(1)

: 0.50 percent of span

Load Sensitivity: Stem position change 0.3 to

1.0 percent of total travel per 488 Newton (100 pound) change in load

Terminal-Based Linearity

travel

Dead Band

(1)

: Less than 0.5 percent of total

travel

Frequency Response

frequency response curves

1. This term is defined in ISA S51.1.

2. Stroking speed with actuator operating a valve under no load.

3. Do not exceed the thrust and torque limits in this manual.

4. The temperature limits in this manual and in any applicable standard or code limitation should not be exceeded.

(2)

(1, 4)

(1)

: ±2 percent of total

(1)

: See figure 3 for typical

Adjustments

Zero and span adjustments located under cover (figure 2)

Hazardous Area Classification

Actuators with intrinsically safe actuator control circuits are available. Intrinsically safe control circuits are indicated by the presence of a special actuator nameplate and require an explosion-proof motor. Refer to the special actuator nameplate for information concerning use of the actuator in hazardous locations. The motor nameplate must also specify an explosion-proof approval.

Motor Type

See table 3. Motor type designations refer to the motor only; not to the entire actuator.

Connections

Power: 1/2-inch NPT female conduit connection

on motor Input Signal: 1/2-inch NPT female conduit connection on side of casing Seal Drain Off: 1/4-inch NPT female connection with vent assembly on top of yoke. This connection is furnished only on 72 mm (2-13/16 inch) and 90 mm (3-9/16 inch) yoke boss sizes of the Type 350 actuators

Approximate Weight

Type 350 without Handwheels

72 mm (2-13/16 inch) Yoke Boss: 49 kg (110 pounds) 90 mm (3-9/16 inch) Yoke Boss: 64 kg (142 pounds) 127 mm (5-inch) Yoke Boss: 91 kg (200 pounds)

Type 354

Size 60: 86 kg (194 pounds) Size 80: 123 kg (275 pounds)

350 Actuator

TRAVEL ADJUSTMENT SCALE

BIAS SPRING

ZERO ADJUSTMENT

SPAN ADJUSTMENT

W5568-1/IL

CASING PLATE ASSEMBLY

FEEDBACK SPRING

Figure 2. Adjustments (Actuator is Shown with Cover Removed)

Instruction Manual

Form 1387

June 2002

Table 2. Input Signals, Internal Resistance, and Coil Part Numbers

CONTROL

CIRCUIT

ACTION

TYPE

Standard

Intrinsically safe

1. Action must not be reserved. See the changing action section of this manual.

Either Field Reversible

Reversible

Direct Reverse

INPUT

SIGNAL,

mA dc

1-5 2200 2H2936000A2 1H309037022 1H308937022 1H681124092 1H681424092 1F546828992 4-20,

4-12, or 12-20

10-50 380 2H2935000A2 1H440337022 1H440237022 1H681124092 1H681324092 1F546828992

(1)

4-20 160 23A1732X012 1H309037022 1H308937022 1H681124092 1H681324092 1F546828992

(1)

4-20 160 23A1733X012 1H309037022 1H308937022 1H681124092 1H681324092 1F546828992

INTERNAL

RESISTANCE,

OHMS

260 2J5228000A2 1H309037022 1H308937022 1H681124092 1H681224092 1P4252X0012

Key 37*

Coil

Assembly

Table 3. Motor Types and Corresponding Power Supplies Required

Weather-Proof Motor Explosion-Proof Motor

Electrical Classification of Motor

Type Horsepower Power

Supply Starting Cur-

rent (Amps) Running Cur-

rent (Amps) Speed

1. Explosion-proof classification pertains to the motor only, not the entire actuator.

Totally Enclosed; Continuous Service—Intrinsically safe control circuit not available with this motor

Capacitor Start, Induction Run Capacitor or Repulsion Start, Induction Run, Fan Cooled 1/3 1/3 115/230 ±10% Vac, Single

Phase, 60 Hz 31 Max @ 115 Vac

15.5 Max @ 230 Vac

7.2 @ 115 Vac

3.6 @ 230 Vac 1725 RPM 1425/1725 RPM 1725 RPM 1425/1725 rpm

220/440 ±10% Vac, Three Phase, 50/60 Hz

8 Max @ 220 Vac 4 Max @ 440 Vac

1.8 @ 220 Vac

0.9 @ 440 Vac

PART NUMBERS

Key 81, Stainless Steel Key 124, Steel

Bias

Spring

Feedback

Spring

Explosion-proof (see motor nameplate for specific rating). Also check for special actuator nameplate to determine if actuator has intrinsically safe control circuit. Unless the control circuit is intrinsically safe and the motor is explosion proof, actuator cannot be used in hazardous atmospheres.

115/230 ±10% Vac, Single Phase, 60 Hz

31 Max @ 115 Vac

15.5 Max @ 230 Vac

7.2 @ 115 Vac

3.6 @ 230 Vac

Weight Weight

220/440 ±10% Vac, Three Phase, 50/60 Hz

8 Max @ 220 Vac 4 Max @ 440 Vac

1.8 @ 220 Vac

0.9 @ 440 Vac

Key 166

Machine

Screw, Steel

(1)

*Recommended spare parts

Instruction Manual

Form 1387 June 2002

13 mm (1/2 INCH) TRAVEL

29 mm (1-1/8 IN)

TRAVEL 76 mm (3- INCH) TRAVEL

13 mm

(1/2 INCH)

TRAVEL

29 mm

(1-1/8 IN)

TRAVEL

76 mm

(3- INCH)

TRAVEL

350 Actuator

mm (INCH)

13A6501-A A1617-2/IL

NOTE: FOR 71mm (2-13/16 INCH) YOKE BOSS SIZE TYPE 350 ACTUATOR WITH 1 TO 5 mA DC INPUT SIGNAL (5% INPUT AMPLITUDE) AND 8896 N (2000 POUNDS) OUTPUT THRUST

Figure 3. Typical Frequency Response Curves

Table 4. Maximum Actuator Travel for Type 350

Types

350 without handwheel

350 with handwheel

1. An actuator with this yoke boss size uses a 19.1 mm (3/4-inch) stem. When this size actuator stem is used, the valve stem must be less than the standard length.

Table 5. Usable Thrust Output of Type 350 Actuators at Maximum Travel

Actuator Type

Yoke Boss Size, mm (Inch)

Travel, mm (Inch) Gross Cylinder

Output Thrust, N (Lb) Usable Output

Thrust, N (Lb)

1. Thrusts given are the thrusts available for operation of control valves. Under some conditions, such as with the valve plug stalled, higher thrusts can be developed. The control valve stem must be capable of withstanding this higher thrust.

YOKE BOSS SIZE TRAVEL

mm Inch mm Inch

72 90 or 127

72 90 127

2-13/16 3-9/16

2-13/16 3-9/16 5

(1)

or 5

(1)

38 76

38 64 76

(1)

350

(w/ or w/o handwheel)

(2-13/16)

(1-1/2)

8896

(2000)

8896

(2000)

90 or 127

(3-9/16 or 5)

64 or 76

(2-1/2 or 3)

8896 or 22240 (2000 or 5000)

8996 or 22240 (2000 or 5000)

1-1/2 3

1-1/2 2-1/2 3

350 Actuator

Table 6. Usable Torque Output of Type 354

Size 60 and 80 Actuators at Maximum Travel

Gross Cylinder

Output Thrust, N (Lb)

Valve Disk or Ball Rotation, Degrees

Usable Torque Output, NSm (LbfSin)

1. Do not exceed torque capabilities of the valve shaft.

Table 7. Side-Mounted Handwheels for Type 350 Actuators

YOKE BOSS

SIZE, mm (INCHES)

(2-13/16)

(3-9/16)

127

(5)

1. Can also open or close valve in emergency without inserting engaging pin.

HANDWHEEL TYPE

Non-Declutchable Open or Close Up or Down Neutral Position

Bolt-on

Integrally Mounted Open, Close, or Throttle

Declutchable Open, Close, or Throttle ––– Non-Declutchable Open or Close Up or Down Neutral Position 51 (2) Declutchable Open, Close, or Throttle –––

Positioning of Valve

OPERATION

Use As

Travel

(1)

Up or Down

8800

(2000)

0-90 0-90

318

(2812)

Action Required

Stop

Unrestricted Travel

Neutral Position & Disengage Pin

22000 (5000)

794

(7031)

for

Instruction Manual

Form 1387

June 2002

(1)

MAXIMUM ACTUATOR

TRAVEL WITH

HANDWHEEL, mm (INCHES)

38 (1-1/2)

64 (2-1/2)

76 (3)

Installation

WARNING

Always wear protective gloves, clothing, and eyewear when performing any installation operations to avoid personal injury.

Check with your process or safety engineer for any additional measures that must be taken to protect against process media.

Key numbers referenced in the following procedures are shown in figure 7 except where indicated.

These actuators are normally shipped as part of a control valve assembly. That is, the actuator will be mounted on a control valve body and the connection between the actuator piston rod and valve will be assembled when the unit is received. Complete instructions for the valve body are provided in a separate manual.

sections, and then complete the Actuator Mounting and Adjusting Stem Connection procedures.

Valve Body and Actuator

Install the valve body in the pipeline by following instructions in the appropriate valve body instruction manual. (Some rotary valves must be out of the pipeline in order to determine the closed position for actuator adjustment. These valves should remain out of the line until the actuator has been mounted and adjusted.)

For proper operation, the actuator must be installed in a vertical position above the control valve body.

Hydraulic Fluid

Clean the casing plate (key 19) to be certain no dust or other foreign material enters the casing (key 5). Unscrew the vent assembly (key 92). When filling the reservoir, use a funnel having a fine-screen strainer to prevent solid impurities from entering the casing.

If the actuator has been shipped separately for mounting on a control valve body or if the control valve body and actuator have been separated for maintenance, attach the actuator to the valve by following the appropriate steps in the mounting actuator section. Complete the remaining installation

Use approximately 10.4 liters (11 quarts) of type A automotive-type automatic transmission fluid. If the motor and pump are to be started at ambient temperatures below –4°C (25°F), use an aircraft-type hydraulic fluid (conforming to MIL-H-5606A specifications).

Instruction Manual

Form 1387 June 2002

350 Actuator

Fill the reservoir to the centerline of the sight gauge (key 112). Replace the vent assembly after filling.

Electrical Connections

Power

Make power connections through the conduit connection on the motor. Refer to the wiring tag attached to the motor for instructions.

CAUTION

Reversed motor rotation may damage the pump. Correct rotation is counterclockwise when viewed from the motor output shaft (clockwise when viewed from the fan end of the motor). Motor rotation is also indicated by an arrow on the motor mounting bracket.

Input Signal

Note

For intrinsically safe installations, refer to the special nameplate and the instructions provided by the barrier manufacturer for proper wiring and instructions. Do not attempt to reverse the action of an actuator with an intrinsically safe control circuit—refer to the warning in the Changing Actuator Action section.

Remove machine screws and junction box cover (keys 86 and 85) from the bottom of the actuator casing.

Insert the signal wires through the 1/2-inch NPT female connection in the side of the actuator. Provide a suitable conduit connector.

For direct-acting actuators (increasing input signal extends actuator piston rod), connect the positive input signal wire to the positive (+) terminal and the negative wire to the negative (–) terminal. For reverse-acting actuators (increasing input signal retracts actuator piston rod) with standard control circuits, reverse the input wires on the terminals.

Seal Drain-Off Connection

Some variations of these actuators are equipped with a double piston rod seal. If so equipped, the actuator is furnished with a vent (key 113, figure 8) installed in the yoke. This vent allows draining of oil that leaks past the high-pressure piston rod seal (key 12). If the drained oil will create a fire hazard, remove the vent and install a remote drain pipe to carry leakage to a safe location.

Startup

Key numbers referenced in this procedure are shown in figure 7. Follow this procedure to ensure that the actuator is operational before putting it into service. Remove cover screws and cover (keys 88 and 87) from the top of the actuator.

Note

The machine screw (key 123) and two locknuts are installed in the force motor to protect the force motor during shipping. The force motor will not function until this screw is removed. Do not replace the screw unless the actuator is to be moved.

Start motor and allow pressure lines to fill. Loosen, but do not remove, the pipe plug (key 114) on top of the piston rod. Allow air bubbles to bleed through the pipe plug connection until the bubbles cease to appear. Tighten pipe plug. Adjust per the following section.

Adjustments

Before adjusting the zero and span, adjust the travel adjustment scale (see figure 2) to the travel required. Be certain the stem connector has been properly installed and adjusted per the Mounting Actuator and Adjusting Stem Connection section. If the actuator is equipped with an optional handwheel, be certain the handwheel engaging pin has been pulled out (if the handwheel is equipped with an engaging pin) and that the handwheel pointer is at the neutral position before proceeding.

Zero/Span Calibration (see figure 2)

With power connected to the motor, adjust the input signal to the signal (direct or reverse acting) which should correspond to the full up position of the piston

350 Actuator

Instruction Manual

Form 1387

June 2002

rod assembly. Rotate the zero (bias spring) adjustment screw until the piston rod just begins to move down. Change the input signal to the opposite end of the input signal range and check the position of the piston rod assembly. If the rod has moved less than full travel, it indicates that the feedback spring has too much tension and that the span (feedback spring) adjustment screw is screwed into the spring too far. If the rod has moved full travel, start moving the input signal in the opposite direction to see where the piston rod assembly starts to move. This indicates if there is enough spring screwed onto the span adjustment. After each adjustment of the span (feedback spring) adjustment screw, the zero (bias spring) adjustment screw must be adjusted for the starting point (full up).

Bypass Valve and Handwheel Operation

Bypass Valve

Before using a handwheel, open the bypass valve (key 76, figure 7) so that fluid pressure will be equalized on either side of the actuator piston. Failure to equalize the pressures may make handwheel operation difficult or impossible.

Note

If the actuator is equipped with optional lock valves, the bypass must be opened to allow handwheel operation even if the motor has been turned off.

To open the bypass valve, rotate the bypass valve stem (key 77, figure 10), located on the side of the actuator, counterclockwise. This rotation direction is indicated by an arrow on the bypass plate (key 79, figure 10). Rotate the stem only enough to open the valve (2 to 4 turns). Further rotation might damage the bypass plate (key 79, figure 10).

Bolt-On Handwheels

Bolt-on handwheels (see figure 13) are available in either of two types, non-declutchable and declutchable. The non-declutchable type is shown in figure 13. With this type, there is no declutching mechanism, but the design of the handwheel nut allows unrestricted actuator travel when the handwheel is positioned so that the pointer (key 160, figure 13) is at the neutral position. The handwheel can be used to open or close the valve if used with a Type 350 actuator (see table 7).

To operate the non-declutchable handwheel,

open the bypass valve and rotate the handwheel clockwise to close or counterclockwise to open the valve. The non-declutchable handwheel can also be used as a travel stop to limit either full opening or closing of the valve. With the handwheel pointer at the neutral position, travel is not restricted. As the pointer is moved from the neutral position, the handwheel mechanism will restrict travel in an increasing amount. Moving the pointer from the neutral position with clockwise handwheel rotation will restrict opening of the valve (counterclockwise rotation will restrict closing of the valve). The handwheel cannot be used to restrict opening and closing at the same time.

The declutchable bolt-on handwheel is similar to the handwheel shown in figure 13 except that the lever pin (key 153, figure 13) is replaced by a removable engaging pin (not shown). Unrestricted actuator travel is possible when the engaging pin is pulled out (engaging pin is retained by a cotter pin) and the handwheel is positioned so that the pointer (key 160, figure 13) is at the neutral position. The declutchable handwheel can be used to open, close, or throttle the valve regardless of the actuator type.

To operate the declutchable handwheel, open the bypass valve. Rotate the handwheel to align the engaging pin holes in the levers (key 146, figure 13) with the hole in the handwheel body (key 142, figure

13). Insert the engaging pin. Rotate the handwheel clockwise to close or counterclockwise to open the valve. Install the cotter pin to retain the engaging pin. The declutchable handwheel cannot be used as a travel stop.

Handwheels for use with the Type 354 actuator are covered in separate manuals. Refer to the Type 1076 handwheel or other handwheel instruction manual as appropriate.

If the actuator is moved from a valve having push-down-to-close action to one having push-down-to-open action or vice versa, a new handwheel nut and screw must be installed to retain counterclockwise-to-open handwheel action. Follow

Instruction Manual

Form 1387 June 2002

350 Actuator

the handwheel disassembly instructions in the Maintenance section to change the nut and screw.

Integrally Mounted Gear-Type Handwheels

Handwheels furnished on the 127 mm (5-inch) yoke boss size Type 350 are integrally mounted types as shown in figure 14. For the 127 mm (5-inch) yoke boss size Type 350 actuator, unrestricted actuator travel is possible when the engaging pin (key 159, figure 14) is pulled out and the handwheel is positioned so that the pointer (key 158, figure 14) is at the neutral position. The handwheels can be used to open, close, or throttle the valve.

To operate the handwheel on 127 mm (5-inch) yoke boss size Type 350 actuators, open the bypass valve. Rotate the handwheel to align the engaging pin holes in the sleeve (key 170A, figure 14) with the hole in the piston rod (key 170B, figure 14). Insert the engaging pin. Rotate the handwheel clockwise to close or counterclockwise to open the valve.

With the integrally mounted handwheel on Type 350 actuators, the valve can be opened or closed in an emergency without inserting the engaging pin. Rotate the handwheel until the sleeve (key 170A, figure 14) contacts either the stem connector or travel stop nut (keys 2 and 178, figure 14). Once the sleeve contacts the connector or travel stop nut, further movement of the sleeve will move the piston rod to open or close the valve.

Either integrally mounted handwheel type can be used as a travel stop to limit either full opening or closing of the valve. With the handwheel pointer at the neutral position (and the engaging pin pulled out for Type 350 actuators), travel is not restricted. As the pointer is moved from the neutral position, full travel will be restricted in one direction when the travel stop nut or stem connector (keys 178 and 2, figure 14) contacts the sleeve (key 170A, figure 14). Moving the pointer from the neutral position with clockwise handwheel rotation will restrict opening of the valve (counterclockwise rotation will restrict closing of the valve). The handwheel cannot be used to restrict opening and closing at the same time.

If the actuator is moved from a valve having push-down-to-close action to one having push-down-to-open action or vice versa, reassemble internal parts as follows to retain counterclockwise-to-open handwheel action. Remove the retainers, handwheel, bearings, and

worm (keys 180, 182, 190, and 181; figure 14). Re-install these parts in the gear case opening opposite the opening from which the parts were removed. Refer to the disassembly instructions in the Maintenance section for assistance.

Table 8. 350 Series Feedback Spring Cutting Details

Coil MA Signal

2J5228000A2 2J5228000A2 2J5228000A2

2H2935000A2

2H2936000A2 23A1732X012 23A1733X012

1H3089-C A3925/IL

4-20

4-12 12-20 10-50

1-5 4-20 4-20

Use

Feedback Spring

1H308937022 1H308937022 1H308937022 1H440237022

1H308937022 1H308937022 1H308937022

Cut Feedback

Spring to:

22-1/2 coils

Do not cut Do not cut

26-1/2-30-1/2

coils

30-1/2 coils 22-1/2 coils 22-1/2 coils

Speed Control Valve

The optional speed control valve (see figure 12) can be used to restrict stroking speed in either direction of piston rod travel and can be reversed in the field to reverse the direction in which stroking speed is restricted. The speed control valve is located under the cover (key 87, figure 7) and is installed in the cylinder pressure line connected to the bottom of the cylinder. When the valve is installed with the arrow (see figure 12) pointing away from the cylinder, fluid flows freely to the bottom of the cylinder. Stroking speed to retract the piston rod is not restricted. However, when the piston rod is being extended, return fluid flow from the bottom of the cylinder is restricted by the speed control valve. This restricts stroking speed to extend the piston rod.

The amount of restriction can be adjusted by rotating the control valve (key 220, figure 12) stem. Clockwise rotation increases the amount of restriction. If it is desired to restrict stroking speed in the opposite direction, unscrew machine screws (key 222, figure 12) and remove the straps (key 221, figure 12). Remove the speed control valve and reverse it in the cylinder pressure line. Re-install straps and machine screws. The arrow on the speed control valve body indicates the direction of adjustable fluid flow through the valve.

350 Actuator

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BN2617-B B0872-2/IL

Figure 4. Operational Schematic of Type 350 Actuator

Changing Actuator Action

WARNING

The action of a 350 Series actuator with an intrinsically safe control circuit must not be reversed in the field. The reversed input signal may create a spark capable of igniting a hazardous atmosphere, resulting in personal injury or property damage. (The reversed input signal will not operate the actuator.) A reverse-acting coil is required for reverse action with an intrinsically safe control circuit.

For actuators with standard control circuits, action can be changed from direct to reverse or vice versa, by reversing the positions of the input signal wires on the terminal strip (key 90, figure 7).

For direct-acting actuators (increasing input signal extends actuator piston rod), the positive input signal wire is to be connected to the positive (+) terminal, and the negative wire to the negative (–) terminal. For reverse-acting actuators (increasing input signal retracts actuator piston rod), the position of the input wires are reversed on the terminals.

Readjust zero and span after changing action.

Instruction Manual

Form 1387 June 2002

350 Actuator

Split-Range Operation

The coil used for the standard 4 to 20 milliamp input signal can also be used for an equal 4 to 12 and 12 to 20 milliamp split. (Intrinsically safe control circuits cannot be used for split ranges.). For split-range operation with 1 to 5 milliamp input signal, coils specifically designed for split-range operation must be used.

If an input signal change requiring a new coil is being made in the field, new bias spring, feedback spring, and weights (key 81, figure 7; key 124, figure

11) may be required. Check table 2 to determine which parts are required.

For some coils and ranges, replacement feedback springs must be cut to length in the field. When measuring and cutting a spring, count the number of coils from the end of the spring that has the long, straight end. Leave enough extra spring wire to form the bend in the end of the spring. See table 8.

Zero and span adjustments are made in the same sequence for both full-range and split-range operation except that only a portion of the full input signal is used for split-range operation. For example, with an equal two-way split using the 4 to 20 milliamp input signal, one actuator will be adjusted to begin travel at 4 milliamps and to reach full travel at 12 milliamps. The other actuator will be adjusted to begin travel at 12 milliamps and to reach full travel at 20 milliamps.

Principle of Operation

This section describes operation of a direct-acting actuator (increasing input signal extends actuator piston rod.) The operation of a reverse-acting actuator is similar except that increasing input signal retracts the actuator piston rod. Refer to the operational schematic drawing in figure 4. An increase in the input signal applied to the coil causes the coil to move toward the force motor, pivoting a flapper closer to the nozzle at A and farther from the nozzle at B in figure 4. This increases the pressure

in the bellows connected to nozzle A and reduces the pressure in the bellows connected to nozzle B. The unbalanced pressures in the bellows pivot a flapper closer to nozzle D and farther from nozzle C. The capping effect on nozzle D causes the operating pressure piped to the cylinder top to build. The unbalanced pressures acting on the piston cause the piston and piston rod to move downward. Fluid below the piston is exhausted through nozzle C.

As the piston rod moves downward, the taper of the feedback cam allows the feedback lever to move to the left, decreasing tension in the feedback spring. Downward stem movement continues until tension in the feedback spring balances the force created by current in the force motor. When these forces are equal, the flappers are in a steady-state condition with the valve stem in the position dictated by the input signal.

A decreasing input signal moves the coil in the opposite direction, moving the piston rod upward.

Lock-in-Last Position

Optional shutoff valves lock the piston rod and valve stem in position if electrical power or hydraulic pressures fail. In operation, the valves are held open by the force of the pressure from the top pump section. If electrical power or hydraulic pressure fails, the shutoff valve springs close the shutoff valves, locking existing pressure on either side of the piston and locking the piston rod in position. The lock-in-last position option will limit stem movement to 0.41 to 0.46 mm (0.016 to 0.018 inches) per hour after system stabilization with a stem load of approximately 1780 Newtons (400 pounds).

Fault-Correction Guide

Table 9 is intended as a guide for isolating and correcting operating difficulties. Perform each check in order and check the operation of the actuator after each correction step. Key numbers referenced in this guide are shown in figure 7 except where indicated.

350 Actuator

Fault Possible Cause Check Correction

1. Sluggish piston rod movement or no piston rod movement

Table 9. Fault-Correction Guide

Electrical system

a. Machine screw (key 123) not removed

a. Remove cover (key 87) and check to be sure screw has been removed.

Instruction Manual

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a. Remove screw and two locknuts.

b. Reversed motor rotation

c. Input signal not reaching actuator

d. Input signal not reaching coil

e. Coil shorted or dirty and does not move with change in input signal

Hydraulic system

a. Bypass valve not full closed

b. Pump relief valves improperly adjusted

c. Nozzles improperly adjusted

d. Primary restrictions plugged

b. Check power connections on motor and motor rotation arrow on mounting bracket.

CAUTION

Improper rotation could result in pump damage.

c. Check input signal wires at terminal strip (key 90) to determine if input signal is reaching actuator.

d. Check wires (keys 133, 128, and 130) at terminal plug (key 102), terminal strip (key 89, figure 12), and at coil (key 37) to determine if input signal is reaching coil.

e. Check coil resistance with ohmmeter (see table 2 for approximate resistance of the coils); inspect coil and magnet for dirt.

a. Check bypass valve on side of actuator.

b. Check per Checking and Adjusting Pump Pressure section.

c. Check per Adjusting Nozzles section.

d. –––

b. Change motor power connections if necessary.

c. If instrument supplying input signal is functioning, correct the input signal wiring.

d. Replace wires or terminals if necessary.

e. Replace coil assembly if shorted; clean coil and magnet per Cleaning Force Motor section.

a. Close bypass valve by rotating bypass valve stem (key 77, figure 14).

b. Adjust per Checking and Adjusting Pump Pressure section.

c. Adjust per Adjusting Nozzles section.

d. Clean per Cleaning Primary Restrictions section.

e. Seals leaking

2. Unusual pump noises 2. Trapped air in suction side of pump

CAUTION

Trapped air could damage pump; shut off motor and correct immediately.

3. Cycling operation 3. If all other elements in the system are functionally correct, problem may be extreme pipeline vibration.

e. If pump is supplying fluid at appropriate pressure and nozzles are adjusted properly, seal may require replacement.

2. Be certain filter (key 117) is completely submerged in hydraulic fluid; check all fittings to be sure all are tight.

3. ––– 3. Re-position actuator at 90

e. Replace per Replacing Seals section.

2. Adjust position of filter by loosening connection on pipe nipple (key 283, not shown) at the pump, re-positioning filter, and tightening connection. Tighten all loose fittings.

degrees to direction of pipeline movement.

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350 Actuator

Maintenance

WARNING

Avoid personal injury or property damage from sudden release of process pressure or bursting of parts. Before performing any maintenance operations:

D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal injury.

D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the actuator cannot suddenly open or close the valve.

D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure from both sides of the valve. Drain the process media from both sides of the valve.

D Vent the pneumatic actuator loading pressure and relieve any actuator spring precompression.

D Use lock-out procedures to be sure that the above measures stay in effect while you work on the equipment.

D The valve packing box may contain process fluids that are pressurized, even when the valve has

been removed from the pipeline.

Process fluids may spray out under pressure when removing the packing hardware or packing rings, or when loosening the packing box pipe plug.

D Check with your process or safety engineer for any additional measures that must be taken to protect against process media.

Parts are subject to normal wear and must be periodically inspected and replaced as necessary. The frequency of inspection and replacement of parts depends upon the severity of service conditions. Establish a routine maintenance schedule after the severity of service conditions is known.

Hydraulic fluid must be checked periodically. Check fluid level through the sight gauge (key 112, figure 7) located on the side of the actuator. Fluid level should reach the centerline of the sight gauge. The level should be checked often when the actuator is first installed. Once the rate of fluid usage is known, establish a routine inspection schedule.

Before adding hydraulic fluid, clean the casing plate (key 19, figure 7) to prevent foreign material from entering the casing. Unscrew the vent assembly (key 92, figure 7) and add fluid through a funnel having a fine-screen strainer. Hydraulic fluid should be drained and replaced at least once a year. When changing the fluid, also change the filter (key 117, figure 7).

To change the filter, first remove the casing plate assembly in accordance with the following section. Then, unscrew the machine screw (key 120, figure

7), and remove the filter support and element (keys 119 and 117, figure 7). Install the new filter element and secure with the filter support and machine screw.

Removing Casing Plate Assembly

Internal parts, except the piston and cylinder, can be removed as an assembly. This assembly can be replaced with a stand-by assembly to allow normal operation during maintenance. To remove the casing plate assembly, proceed as follows. Key numbers referenced in this procedure are shown in figure 7 except where indicated.

1. Clean the top surface of the casing plate (key 19) to avoid getting dirt in the casing (key 5). Unscrew and remove ten cap screws (key 20) from the casing plate.

2. When lifting the casing plate assembly, rotate it slightly back and forth to loosen the O-rings (key 23) that are held in the adaptor plug (key 21). Use care to avoid damaging the O-rings when lifting.

3. If it is not necessary to move the casing plate assembly away from the actuator, cover the feedback cam (key 17) with a piece of cardboard and prop the casing plate assembly against the cam. Rest the motor end of the assembly on the casing.

4. If the casing plate is to be moved away from the actuator, disconnect the wire assembly (key 128) from the terminal strip (key 89, figure 11) located on the pilot block (key 57, figure 11).

5. Use reasonable care in handling the casing plate assembly. Flexures (keys 50, 53, and 54; figure 11) used to mount the flappers (keys 46, 48, and 67;

350 Actuator

Instruction Manual

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June 2002

figure 11) can be damaged if the assembly is handled roughly.

6. Inspect the three O-rings (key 23) in the adaptor plug (key 21); replace if necessary.

7. Before replacing the casing plate assembly, be certain the wire assembly (key 128) is connected to the terminal strip (key 89, figure 11). Carefully guide the adaptor plug over the feedback cam and onto the cylinder cap assembly (key 8).

Cleaning Force Motor

Key numbers referenced in this procedure are shown in figure 7.

The force motor coil assembly (key 37) must be free to move toward and away from the magnet (key 38) in response to changes in the input signal. Accumulation of dirt or other foreign material on the coil or magnet can hinder coil movement and cause faulty actuator operation. To clean the magnet and coil, proceed as follows.

1. Unscrew the cover screws (key 88) and remove the cover (key 87).

2. Disconnect wires (key 130) from the coil. Unscrew and remove the machine screw (key 121).

3. Loosen the machine screw (key 25). Remove the magnet and coil assemblies.

4. Remove dirt and other foreign material from the coil and magnet by picking it off with cellophane tape.

73, figure 11) may become partially clogged. This will result in sluggish actuator operation. To clean the restrictions, proceed as follows.

1. Remove the casing plate assembly and prop it against the feedback cam as described in the Removing Casing Plate Assembly section.

2. Unscrew the two restriction fittings (key 73, figure

11) from the amplifier base (key 72, figure 11).

3. Run a cleaning wire through the 0.64 mm (0.025-inch) orifices in the fittings; then wash out the openings.

4. If necessary, loosen the pipe nipple (key 283, not shown) at the pump (key 196). Rotate the filter (key

117) into the hydraulic fluid.

5. Disconnect the high-pressure tubes (keys 104 and 105) from the amplifier assembly. Loosen the high-pressure tube fittings at the pump. Rotate the high-pressure tubes until the tube ends are submerged in hydraulic fluid. Tighten the pump tube fittings.

6. Be certain the casing plate assembly is solidly propped on the casing. Start the motor to flush the hydraulic amplifier. Let the motor run for approximately 5 minutes.

7. If necessary, install new O-rings (key 74, figure

11) on restriction assemblies.

8. Re-install restriction assemblies into the amplifier block. Tighten securely.

9. Re-connect and tighten high-pressure tube fittings. Re-position the filter and tighten the filter tube fitting.

CAUTION

Individual components of the coil and magnet assemblies are not field replaceable. Order a new coil or magnet assembly if repair is necessary.

5. After cleaning, reassemble in reverse order of the above steps. Be certain the wires (key 130) have enough slack to allow the coil to move in response to changes in input signal.

Cleaning Primary Restrictions

Key numbers referenced in this procedure are shown in figure 7 except where indicated.

Over a long period of time, especially under dirty operating conditions, the primary restrictions (key

Checking and Adjusting Pump Pressure

Key numbers referenced in this procedure are shown in figure 7 except where indicated.

1. Remove the casing plate assembly and prop it against the feedback cam as described in the Removing Casing Plate Assembly section.

2. Disconnect the high-pressure tubes (keys 104 and 105) from the amplifier assembly.

3. Connect two 50-bar (600 psig) pressure gauges to the ends of the high-pressure tubes.

4. If necessary, loosen the connection on the pump end of the pipe nipple (key 283, not shown) and rotate the filter (key 117) under the hydraulic fluid.

5. Be certain the casing plate assembly is solidly propped on the casing.

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350 Actuator

CAUTION

When checking pressure, allow the motor to run only an instant (just long enough to bring the pressure indication on the gauges to maximum), or overheating and damage to the motor may result.

Turn on the motor and read the pressure gauges.

6. Both gauges should indicate pressure between

34.5 and 36.2 bar (500 and 525 psig).

7. Each pump section has an adjustable relief valve located on the side of the pump opposite the output connections. Remove cap nuts covering the relief valve adjustments. Use a screwdriver to adjust the relief valves. Replace cap nuts immediately after adjusting to prevent air from entering the system.

8. After adjusting, run the motor for an instant to check output pressure. Re-adjust relief valves if necessary.

9. When adjustments are complete, remove the 50 bar (600 psig) pressure gauges. Loosen high pressure tube fittings at the pump and rotate the tubes until the ends are submerged in hydraulic fluid. Tighten high-pressure tube fittings at the pump.

10. Disconnect the low-pressure tube (key 103) from the block (key 57, figure 11), and attach a 10 bar (75 or 100-psig) pressure gauge to it.

11. Be certain the casing plate assembly is solidly propped on the casing.

CAUTION

When checking pressure, allow the motor to run only an instant (just long enough to bring the pressure indication on the gauges to a maximum), or overheating and damage to the motor may result.

Turn on the motor and read the pressure gauge.

12. The gauge should indicate pressure between

3.4 and 4.1 bar (50 and 60 psig).

13. The low-pressure pump section has an adjustable relief valve located on the side of the pump opposite the output connection. Remove the cap nut covering the relief valve adjustment. Use a screwdriver to adjust the relief valve. Replace the

cap nut immediately after adjusting to prevent air from entering the system.

14. After adjusting, run the motor for an instant to re-check output pressure.

15. Re-adjust the relief valve if necessary.

16. When adjustment is complete, remove the pressure gauge. Re-connect and tighten all tubing connections. Return the filter to the normal position.

17. If no further maintenance is necessary, replace the casing plate assembly on the casing.

Adjusting Nozzles

If the nozzles (keys 71 and 64, figure 11) require adjustment or if the amplifier has been disassembled, adjust as follows. Key numbers referenced in this procedure are shown in figure 11 where indicated.

Remove the casing plate assembly and prop it against the feedback cam as described in the Removing Casing Plate Assembly section.

Low-Pressure Nozzles

1. Remove two machine screws and spray shield (keys 122 and 127) from the amplifier base (key 72). To adjust nozzles, it is necessary to attach a 5 bar (60 psig) pressure gauge to each of the holes from which the machine screws were removed.

Note

The machine screw holes are tapped 1/4-inch (28 UNF) and will not accept pipe threads. Provide suitable adaptors to convert from the machine screw threads to the pressure gauge threads.

In the following steps, the directions right and left are given assuming that the amplifier is being viewed as shown in figure 11.

2. Loosen the locknut found on the right nozzle located on the amplifier base (key 72). Adjust the nozzle so that the right flapper (key 48) will act as a stop and result in approximately 1.6 to 2.4 mm (1/16 to 3/32-inch) clearance between the coil assembly (key 37, figure 7) and the outer pole piece (key 38B, figure 7). The flapper should rest firmly on the nozzle but should not bend.

3. Loosen the locknut (key 36) located on the left nozzle (key 71).

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CAUTION

To avoid damage to the flappers and flexures, move the beam (key 39) and coil (key 37, figure 7) carefully.

4. With the beam (key 39) moved to the right, rotate the left nozzle (key 71) until there is a clearance between the nozzle and left flapper (key 46) of approximately 0.10 mm (0.004 inches).

5. Disconnect the high-pressure tubes (keys 104 and 105, figure 7) from the amplifier assembly. Loosen the connections on the pump end of the tubes and rotate the tubes until the ends are submerged in hydraulic fluid. Retighten the pump connections. If necessary, loosen the pipe nipple (key 283, not shown) connection on the pump and rotate the filter (key 117, figure 7) until it is submerged in hydraulic fluid.

6. Start the motor and observe the pressure gauges in the amplifier. Each gauge should register approximately 1.9 to 2.2 bar (28 to 32 psig) when the beam (key 39) is moved to the center of beam travel.

7. If pressure is not 1.9 to 2.2 bar (28 to 32 psig) on each gauge, rotate the left nozzle (key 71) only up or down until the pressure is correct.

8. When the beam is moved manually through full travel, each gauge should vary from approximately

1.0 bar (15 psig) to the pump supply pressure of

3.4 to 4.1 bar (50 to 60 psig).

9. When the adjustment is correct, remove the pressure gauges and return the pressure lines and filter to operational position. Replace the spray shield and machine screws.

the terminal strip (key 89, figure 11). Completely remove the casing plate assembly from the actuator.

Adaptor Plug O-Rings

Remove the three O-rings (key 23) from the adaptor plug (key 21) and replace with new O-rings.

Upper Piston Rod Seal and Piston Seals

1. Remove the drain plug (key 111) and drain hydraulic fluid from the casing (key 5).

2. Disconnect all tubing connections from the cylinder cap assembly (key 8).

3. Using care to avoid scratching the cam surface, unscrew the feedback cam (key 17) from the feedback rod (key 16B). Install a new O-ring (key 18) on the feedback cam.

4. Unscrew and remove the tie rod nuts (key 10). Remove the cylinder cap (key 8D).

5. Remove the felt oil seal (key 8A) and install a new seal. Remove the O-ring and backup ring located between the guide bushing (key 8B) and cylinder cap. When installing the new O-ring and backup ring, be certain the backup ring is installed adjacent to the cap (on the side of the O-ring opposite the guide bushing). Be certain the O-ring is not twisted.

6. Install a new O-ring (key 192) on the cylinder cap.

7. To replace the piston seal parts (keys 15 and

136), remove the cylinder (key 6) from the cylinder base (key 7).

CAUTION

High-Pressure Nozzles

To adjust high-pressure nozzles (key 64), first be certain the bellows beam (key 67) is at rest. Use feeler gauges to measure the clearance between each ball (key 66) and bellows bolt (key 68). Using two 0.009 inch feeler gauges, loosen the locknut (key 65) and rotate the nozzle(s) up or down for a total of 4.6 mm (0.18 inch) clearance.

Replacing Oil Seals

Key numbers referenced in the following procedures are shown in figure 7 except where indicated.

Remove the casing plate assembly per instructions in the Removing Casing Plate Assembly section above. Disconnect the wire assembly (key 128) from

Do not attempt to disassemble the feedback rod (key 16B) or piston (key 16C) from the piston rod (key 16A). The reassembly of these parts involves special procedures and sealant and is extremely difficult to perform in the field. Order a new piston rod assembly if replacement is required.

8. Remove the O-ring and two backup rings (keys 15 and 136) from the piston. Replace with new parts, making certain the O-ring is installed between the two backup rings and is not twisted. Install the new O-ring on the cylinder base (key 7).

9. If it is not necessary to replace the lower piston rod seal (key 12), reassemble in the reverse order of the procedure used to disassemble. Tighten the tie

Instruction Manual

Form 1387 June 2002

350 Actuator

rod nuts (key 10) evenly to prevent binding the piston.

Lower Piston Rod Seal

1. Remove the drain plug (key 111) and drain hydraulic fluid from the casing (key 5) if this has not already been done. For 122 mm (5-inch) yoke boss size Type 350 actuators with handwheel, pull out the engaging pin (key 159, figure 14).

2. Follow the appropriate procedure below: a. For Type 350 actuators, remove the stem

connector assembly (key 2, figure 8) from piston rod (key 16, figure 8).

b. For Type 354 actuators (figure 9), remove the snap rings (key 202, 213, and 214). Loosen the clevis locknut (key 201). Disconnect the clevis (key 2) by first removing the snap ring and pin that are in the clevis. Unscrew the clevis and clevis locknut from the piston rod (key 16, figure

8). Remove the clevis boot (key 212).

3. Disconnect all wiring from casing (key 5).

4. Remove cap screws (key 4, figure 5). Remove

entire casing (key 5) from yoke (key 1, figure 8).

5. The hex portion of seal bushing (key 13) is now

exposed and can be used to unscrew the bushing from casing.

6. Remove old O-ring and backup ring (keys 12 and

137) from bushing. When installing new O-ring and

backup ring, be certain the backup ring is on the side of the O-ring facing the hex end of the bushing. Install new O-ring facing the hex end of the bushing. Install new O-ring (key 14) on threaded end of bushing.

7. If the cylinder has been disassembled per the

previous section and it is desired to replace the O-ring (key 11) between the cylinder base (key 7) and casing (key 5), disconnect tubing from cylinder base, remove base, and install new O-ring.

8. Reassemble in the reverse order of the

procedure used to disassemble. Tighten cylinder tie rod nuts (key 10) evenly to avoid binding the piston.

Handwheel Maintenance

Refer to the separate Type 1076 handwheel instruction manual for information of the Type 1076 handwheel for use with the Type 354 actuator.

Bolt-On Handwheels

Key numbers referenced in this procedure are shown in figure 13 except where indicated.

Non-declutchable handwheels include a grease fitting (key 169). Periodically, use this fitting to lubricate with a good-quality general-purpose grease. If it is necessary to disassemble the handwheel assembly, use the following procedure.

1. Disconnect levers (key 146) from the stem connector assembly.

2. To remove the handwheel assembly: a. For 90 mm (2-13/16 inch) yoke boss size,

remove the handwheel-mounting cap screws and U-bolt (key 166).

b. For 127 mm (3-9/16 inch) yoke boss size, unscrew the hex nuts (keys 144 and 170) from the U-bolts (keys 143 and 166).

3. Follow the appropriate procedure: a. For declutchable handwheels, remove the

cotter pin from the engaging pin, and pull out the engaging pin.

b. For non-declutchable handwheels, remove the snap ring (key 154), and drive out the lever pin (key 153).

4. To release the levers (key 146), unscrew and

remove two machine screws and nuts (keys 156 and

158).

5. Unscrew and remove the pointer screw (key 161)

and the pointer bolt that is located behind the pointer (key 160).

6. Unscrew the nut (key 54) and remove the

handwheel (key 51). Be careful to avoid losing the ball and spring (keys 55 and 56).

7. Loosen the set screw (key 168). Unscrew and

remove the bearing retainer (key 136). The bearing will be removed with the retainer.

8. Pull out the screw assembly (key 145). The

operating nut (key 132) will be removed with the screw assembly. Remove the bearing (key 152).

9. Before reassembling, pack the bearings with a

good-quality general-purpose grease. Apply Lubriplate No. 130AA lubricant or equivalent to the screw assembly threads, the ball, and the tips of the guide bolts (key 167).

10. Reassemble following steps 1 through 8 of this

procedure, but in reverse order.

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Integrally Mounted Gear-Type Handwheels

Lubricate the handwheel mechanism periodically with a good-quality general-purpose grease. On the 127 mm (5-inch) yoke boss size, a grease fitting (key 187, figure 14) is provided for this purpose. If you need to disassemble the handwheel mechanism, use the following procedure. Key numbers referenced in this procedure are shown in figure 14 except where indicated.

1. Remove the stem connector (key 2) and pointer (key 158) from the sleeve. For 127 mm (5-inch) yoke boss size, be certain the engaging pin (key 159, figure 14) is removed from the sleeve and piston rod.

2. Remove the drain plug (key 111, figure 7), and drain the casing.

3. Remove the cap screws (key 199, figure 14). Lift the entire casing and attached adaptor and piston rod off the yoke.

4. Rotate the handwheel until the sleeve (key 170A, figure 14), is free of the worm gear (key 174). Remove the sleeve.

5. Unscrew cap screws (key 176, figure 14). Remove the gear case and attached parts. Remove the retainer (key 175, figure 14). Remove the worm gear (key 174, figure 14) and two bearings (key 173, figure 14).

6. To remove the worm shaft (key 181) and bearings (key 190):

a. Loosen the set screws (key 186) in the gear case and, for 127 mm (5-inch) yoke boss size, in the handwheel cap (key 185).

b. Unscrew the handwheel cap or hex nut (key

185) and remove the handwheel. Be careful to avoid losing the ball and spring (keys 188 and

189). c. Unscrew the worm shaft retainers (keys 179

and 180). Remove the worm shaft (key 181) and bearings (key 190).

7. Before reassembling, pack all bearings with a good-quality, general-purpose grease. Apply Lubriplate No. 130A lubricant or equivalent to the surface of the sleeve, worm shaft, worm gear, and ball.

8. Reassemble following steps 1 through 7 of this procedure, but in reverse order. If the handwheel was disassembled to reverse the direction of rotation required to open the valve (this would be required if

the actuator were being taken off a valve with push-down-to-open action and re-installed on a valve with push-down-to-close action or vice versa), install the worm shaft (key 181) and retainers (keys 179 and 180) into the gear case hole opposite the hole from which these parts were removed. Also, for 127 mm (5-inch) yoke boss Type 350 actuators, install the gear case rotated 180 degrees from original position.

9. When reassembling, adjust the bearings as

follows. Tighten the set screws (key 171, figure 14) to eliminate free play in the bearings. Overtightening the set screws will make handwheel operation difficult. Lock the set screws in place with hex nuts (key 191, figure 14).

Mounting Actuator and Adjusting Stem Connection

Type 350

1. Mount the actuator on the valve; secure with the

valve yoke locknut [eight cap screws and nuts for 127 mm (5 inch) yoke boss size].

2. Remove the stem connector assembly (key 2,

figure 8). Thread the stem locknuts (key 198, figure 14) all the way onto the valve plug stem thread. If the actuator is equipped with a torque arm (key 100, figure 8), place it on the locknuts.

3. Position the valve plug as follows: a. For valves with push-down-to-close action,

position the valve plug on the seat. b. For valves with push-down-to-open action,

move the valve plug to the open position.

4. Start actuator and proceed as follows: a. For valves with push-down-to-close action,

adjust the input signal to retract the actuator piston rod fully. Then, vary the input signal to extend the piston rod an amount equal to the rated travel of the valve. Clamp the piston rod to the valve stem with the stem connector assembly.

b. For valves with push-down-to-open action, adjust the input signal to extend the actuator piston rod fully. Move the valve plug stem to the piston rod; clamp the valve stem and piston rod together with the stem connector assembly.

5. Attach the torque arm to the stem connector with

two cap screws (key 101, figure 8). Cycle the

Instruction Manual

Form 1387 June 2002

350 Actuator

actuator and check to be sure that full travel is being reached and that the valve plug seats.

CAUTION

Do not use wrenches or other tools directly on the valve plug stem, or damage to the stem surface and subsequent damage to the valve packing may result. Never rotate the valve plug stem while the valve plug is in contact with the valve seat ring, or damage to the valve seating surfaces may result. Be certain the plug is off the seat before rotating the stem.

Minor travel adjustments can be made by loosening the stem connector slightly, tightening the stem locknuts together, and screwing the stem into or out of the stem connector by using a wrench on the locknuts.

6. After adjustment is complete, tighten the stem connector securely, lock the stem locknuts against the stem connector, and adjust the travel indicator scale (key 97, figure 8) to show valve plug position.

7. Make final adjustments to establish the starting point of valve travel (zero) and to obtain full travel for the given input signal range (span) per the Adjustments section.

Type 354 Actuator Mounting

Use the following steps to connect a valve body and actuator that have been ordered separately. Key numbers used in this procedure are shown in figure 9.

1. Unscrew the cap screws and washers (keys 256 and 254), and remove the cover (key 273). If a Type 1076 handwheel is used with the actuator, it will be removed with the cover.

2. If the lever (key 262) is attached to the connecting rod (key 252), remove the cap screw and nut (keys 266 and 275).

3. Consult figure 5 for available mounting styles and positions. The actuator must be positioned vertically with the actuator casing above the valve (position 1 in figure 5). Positions 2 and 4 may be used only if the pipeline is vertical and the actuator casing is above the valve.

4. Mount the actuator to the valve body, and secure it with the valve mounting cap screws. When

mounting the actuator, make sure that the bushing (key 261) and valve shaft are in line so that the bushing will slide onto the valve shaft without getting damaged.

5. Apply lubricant (key 277 or equivalent) to the

valve shaft spline.

6. Consult the appropriate valve body instruction

manual for lever/shaft orientation marks, and slide the lever into place. Consult figure 6 for the appropriate lever operating clearance.

7. Tighten the cap screw (key 268) to a torque of

271 NSm (200 lbfSft).

8. Rotate the lever until the cap screw hole is

aligned with the rod end bearing on the connecting rod (key 252). If necessary, loosen the hex nuts (key

251) and rotate the connecting rod to align the rod

end bearing with the lever.

9. Apply locking compound (key 276 or equivalent)

to the thread of the cap screw (key 266).

10. Connect the lever to the rod end bearing with

the cap screw and washer (keys 266 and 284). Tighten the cap screw to a torque of 271 NSm (200 lbfSft).

11. Note the valve disk or ball position and direction

or rotation.

12. Position the travel indicator (key 153) according

to the valve disk or ball position just noted. Replace the cover (key 273), and secure it with the washers and cap screws (keys 254 and 256). If the holes in the cover and housing (key 269) do not align, temporarily loosen the cap screws (key 278), and shift the housing slightly. Do not stroke the actuator while the cover is off.

13. If the Type 354 actuator is equipped with an

auxiliary handwheel actuator, make certain that a cylinder bypass is also used to equalize cylinder pressure during handwheel operation. Operating the handwheel actuator against the force of the cylinder pressure will be difficult or impossible.

CAUTION

Attempting to operate the Type 354 actuator when an auxiliary manual actuator is engaged could damage the splined valve shaft. Be certain the manual actuator is disengaged before operating the Type 354 actuator.

350 Actuator

VALVE SERIES OR DESIGN

V150,

PDTC PDTO

(1)

V200,

V250, V300

A B

C D

MOUNTING ACTION

Right-hand

Left-hand

1. PDTC—Push-down-to-close; PDTO—Push-down-to-open.

8532, 8560

& 9500

B A

C D

Instruction Manual

Form 1387

June 2002

CV500

V500

A B

D C

43A6505-A C0683/IL

Figure 5. Mounting Styles and Positions for the Type 354 Actuator

14. Tighten the hex nuts (key 251) on the ends of the connecting rod (key 252).

15. If you want to adjust travel, refer to the next section.

Type 354 Valve Travel Adjustment

1. Loosen the hex nuts (key 251) on the ends of the connecting rod (key 252).

2. Consult the appropriate valve body instruction manual for determining the closed position of the valve. Then, perform one of the following:

For push-down-to-close valves (extending piston rod closes valve), rotate the connecting rod to adjust the connecting rod length so that the valve will be fully closed when the actuator piston rod is fully extended. Use care to avoid stroking the valve beyond the fully closed position. Tighten the hex nuts on the connecting rod when adjustment is complete.

For push-down-to-open valves (extending piston rod opens valve), rotate the connecting rod to adjust the connecting rod length so that the valve will be fully closed when the actuator piston rod is fully

Instruction Manual

Form 1387 June 2002

A3922/IL

Figure 6. Type 354 Lever Operating Clearance

retracted. Use care to avoid stroking the valve beyond the fully closed position. Tighten the hex nuts on the connecting rod when adjustment is complete.

3. Loosen the screws (key 255) and adjust the travel indicator (key 153). Retighten the screws.

350 Actuator

valve disk and bearings away from the centered position, resulting in subsequent damage to valve parts as the valve is operated.

If necessary, use a wheel puller to remove the lever. It is permissible to tap the wheel puller screw lightly to loosen the lever, but hitting the screw with excessive force could also damage valve parts or disrupt the centered position of the valve disk and bearings.

5. Remove the lever.

6. While supporting the actuator, unscrew the cap

screws that attach the actuator to the valve or unscrew the cap screws (key 278) that attach the housing (key 269) to the mounting yoke (key 260).

7. Remove the actuator.

8. Refer to the Type 354 actuator mounting section

to replace the actuator in the desired position.

Note

Fisher does not assume responsibility for the selection, use, or maintenance of any product. Responsibility for proper selection, use, and maintenance of any Fisher product remains solely with the purchaser and end-user.

Changing Type 354 Actuator Mounting

1. If it is necessary to change the Type 354 actuator mounting position, isolate the valve from all pressure. Shut off power to the actuator.

2. Unscrew the cap screws and washers (keys 256 and 254), and remove the cover (key 273).

3. Remove the cap screw and washer (keys 266 and 284). Move the connecting rod (key 252) out of the lever (key 262).

4. Note the orientation of the lever (key 262) and valve shaft. Loosen the cap screw (key 268).

CAUTION

Do not use a hammer or similar tool to drive the lever (key 262) off the valve shaft. Driving the lever could damage internal valve parts. On some valve types, driving the lever could move the

Parts Ordering

When corresponding with your sales representative about this equipment, state the serial number of the unit. The serial number can be found on the nameplate and on the serial number plate (key 140, figure 7). If a new casing plate assembly has been installed in the actuator, the serial number on the nameplate may not be the same as the serial number on the serial number plate. State both numbers if they are different.

When ordering replacement parts, also specify the complete eleven-character part number of each part required as found in the following Parts List.

Components that are not manufactured by Fisher should not, under any circumstances, be used in any Fisher actuator. The use of parts not manufactured by Fisher may adversely affect the performance of the actuator as well as worker and workplace safety.

350 Actuator

Instruction Manual

Form 1387

June 2002

Parts Kits

Parts Kit (Includes keys 1B, 8A, 8F [O-ring],

11, 12, 14, 15, 18, 23, 63, 74, 78, 82, 83, 84, 117, 136, 137, 192, 194, & 196B [pump assembly gasket]) R350X000012

Pump Assembly Parts Kit (Includes keys 76,

109, 196, 282, & 283) 13B7149X062

Parts List

Note

Part numbers are shown for recommended spares only. For part numbers not shown, contact your Fisher sales office.

Key Description Part Number

Actuator

1 Yoke 1B* Oil Seal

Type 350

72 mm (2-13/16 in.) & 90 mm (3-9/16 in.)

yoke boss 1H286206992

127 mm (5 & 5H in.) yoke boss 10A3874X012 2 Stem Connector 2B Clevis Pin, SST 3 Cap Screw, pl steel 4 Cap Screw, steel 4 Hex Nut, pl steel 5 Case, aluminum 6 Cylinder, steel 7 Cylinder Base 8 Cylinder Cap Ass’y c/w oil seal 8A* Oil Seal 1H286206992 9 Tie Rod, steel 10 Hex Nut, cd pl steel 11* O-Ring, nitrile 1H291706562 12* O-Ring, nitrile (2 req’d) 1H849806992 13 Seal Bushing, brass 14* O-Ring, nitrile 1D2620X0012 15* O-Ring, nitrile

8900 N (2000 lb) thrust 1K117806992

22200 N (5000 lb) thrust 1D2658X0012 16 Piston Rod Ass’y, SST/brass 17 Feedback Cam, SST 18* O-Ring, nitrile 1C7822X0012 19 Casing Plate, aluminum 20 Cap Screw, pl steel 21 Adaptor Plug, steel 22 Machine Screw, pl steel 23* O-Ring, nitrile (3 req’d) 1H292106562 24 Follower Support, pl steel 25 Machine Screw, pl steel 26 Follower 27 Pivot Pin 28 Bearing Shaft 29 Ball Bearing 30 E-Ring 31 Travel Adjustment Knob

Key Description Part Number

32 Travel Adjustment Pointer 33 Travel Adjustment Scale, brass 34 Machine Screw, pl steel 35 Washer, pl steel 36 Hex Nut, pl steel 37* Coil Ass’y See table 2 38 Magnet Ass’y 39 Coil Beam, aluminum 40 Coil Beam Base, steel 41 Spring Beam, pl steel 42 Coil Beam Support, steel 43 Machine Screw, steel 44 Cap Screw, pl steel 45 Bias Spring Bracket, pl steel 46 Flapper, SST 47 Adjusting Screw, aluminum 48 Flapper Strip, SST 49 Adjusting Screw Nut, 416 SST 50 Flexure Strip, SST 51 Spring Clamp, 416 SST 52 Flexure Strip Block, steel 53 Flexure Strip, SST 54 Flexure Strip, SST 55 Machine Screw, pl steel 56 Machine Screw, pl steel 57 Pilot Mount, aluminum 58 Machine Screw, steel 59* Shut-off Valve Ass’y (2 req’d) 1V1076X0012 59A Shut-off Piston, 416 SST 59B* O-Ring, nitrile (2 req’d) 1E218106992 59C Spring Seat, 416 SST 59D Spring, pl steel 59E* O-Ring, nitrile (4 req’d) 1H292406992 59F O-Ring, nitrile 59G Spacer, 416 SST 59H Shut-off Plug Ass’y, brass 59J* Back-up Ring, PTFE (2 req’d) 1N659006242 59K Back-up Ring, PTFE 60 Bushing, 416 SST 61 Pilot Block, aluminum 62 Machine Screw, steel 63* O-Ring, nitrile (3 req’d) 1D6875X0022 64 Pilot Nozzle, 416 SST HT 65 Hex Nut, steel 66 Ball, 440C HT 67 Bellows Beam, steel 68 Bellows Bolt, 416 SST HT 69 Bellows Ass’y 70 Bellows Nut, SST 71 Amplifier Nozzle, 416 SST HT 72 Amplifier Base, Aluminum 73 Orifice Fitting Ass’y, SST/alum. 74* O-Ring, nitrile

w/ bypass valve ass’y (3 req’d) 1H291906992

w/o bypass valve ass’y (2 req’d) 1H291906992 75 Machine screw, steel 76 Bypass Valve Block 77 Bypass Valve Plug 78* O-Ring, nitrile 1D2375X0022

*Recommended spare parts

Instruction Manual

Form 1387 June 2002

350 Actuator

53A7989-E/DOC

Figure 7. Reservoir and Casing Assembly with Bypass Valve

(continued on next page)

350 Actuator

SECTION AĆA

APPLY LUBRIPLATE NO. 130AA ON SURFACES MARKED”A”

PILOT ASSEMBLY DWG NO. DL4135

Instruction Manual

Form 1387

June 2002

PARTS NOT SHOWN: 22, 28, 30, 35, 43, 106, 107, 116, 120, 134, 138, 147, 148, 149,150, 154A, 156, 282, & 283. KEY 8D IS ROTATED 90 DEGREES FOR CLARITY.

53A7989-E/DOC

Key Description Part Number

79 Bypass Plate 80 Machine Screw, steel 81 Bias & Feedback Springs, SST See table 2 82* Casing Gasket 1H281206992 83* Cover Gasket 1H282206992 84* Terminal Box Gasket, composition 1H281304012 85 Terminal Box Cover, pl steel 86 Machine Screw, steel 87 Cover, aluminum 88 Cover Holding Screw, 416 SST 89 Terminal Strip 90 Terminal Strip 91 Marker Strip, fiber 92 Vent Ass’y 93 Motor 94 Hi-Seal Fitting, pl steel 95 Hi-Seal Elbow, pl steel 96 Hi-Seal Fitting, pl steel 97 Travel Indicator Scale, SST 98 Screw 99 Twin Speed Nut, SST 100 Torque Arm 100A Groove Pin, 316 SST, 101 Cap Screw, steel 101 Hex Nut, cd pl steel 102 Terminal Plug 103 Pilot Amplifier Tubing, stainless steel 104 Pilot Supply Tubing, stainless steel 105 Pilot Supply Tubing, stainless steel 106 Adaptor Plug Tubing, stainless steel 107 Adaptor Plug Tubing, stainless steel 108 Bypass Tube, bottom, stainless steel

Figure 7. Reservoir and Casing Assembly with Bypass Valve (Continued)

Key Description Part Number

109 Bypass Tube, top, stainless steel 110 Cylinder Tubing, 304 stainless steel 111 Magnetic Pipe Plug 112 Oil Level Gauge 113 Vent Ass’y 114 Pipe Plug, steel 115 Nameplate, aluminum 116 Drive Screw, SST 117* Filter Element 1H286099012 118 Filter Plug, steel 119 Filter Support, brass 120 Machine Screw, steel 121 Machine Screw, brass 122 Machine Screw, steel 123 Machine Screw, steel 124 Weights, steel See table 2 125 Balance Beam, pl steel 126 Machine Screw, steel 127 Spray Shield, steel 128 Pilot Wire Ass’y 129 Lockwasher, steel 131 Lockwasher, steel 132 Terminal Wire Ass’y 133 Terminal Wire Ass’y 134 Cable Clamp, steel 135 Marker Strip 136* Backup Ring (2 req’d)

8900 N (2000 lb) thrust, PTFE 1J505206992

22200 N (5000 lb) thrust, leather 1H749206992 137* Backup Ring, TFE (2 req’d) 1J489106992 138 Lockwasher, steel

*Recommended spare parts

Instruction Manual

Form 1387 June 2002

350 Actuator

Key Description Part Number

198 Hex Jam Nut, pl steel 200* Piston Rod Boot, neoprene

Type 354 1H937906992 201 Boot Locknut, pl steel 202 Snap Ring, pl steel 203 Snap Ring, pl steel 211 Travel Stop, brass 212* Clevis Boot, neoprene

Type 354

Size 60 1H872106992

Size 80 19A9274X012 213 Snap Ring, pl steel 214 Snap Ring, steel 220 Control Valve 221 Control Valve Strap, aluminum 222 Machine Screw, steel 223 Fitting, pl steel 224 Tubing, stainless steel 226 Machine screw, pl steel 245 Nameplate, SST (for use with rotary valves) 248 Elbow, pl steel

Note

DL4130-F/DOC

Figure 8. Type 350 Actuator Yoke and Stem Connector

Key Description Part Number

139 Lockwasher, steel 141 Cap Screw, steel 145 Lockwasher, brass 146 Pipe Plug, steel 151 Groove Pin, steel 152 Lockwasher, steel 153 Indicator Disk, SST 154 Adjusting Screw Ass’y, 416 SST/steel 155 Hex Nut, pl steel 156 Pipe Nipple, zn pl steel 157 Junction Condulet 158 Pointer 164 Washer, steel 166 Machine Screw, steel See table 2 167 Adaptor Wiper, SST 169 Washer, steel 192* O-Ring, nitrile (2 req’d)

8900 N (2000 lb) thrust 1H291706562 22200 N (5000 lb) thrust 1H742206992

194* O-Ring, nitrile (4 req’d) (not shown)

22200 N (5000 lb) thrust only 1H292406992 195 Lockwasher, steel 196 Pump Ass’y & Mounting Parts

Key numbers 250 through 281 apply to Type 354 actuators only.

250 Rod End Bearing, steel/PTFE 251 Hex Nut, pl steel 252 Connecting Rod 254 Washer, steel 255 Self-Tapping Screw, pl steel 256 Cap Screw, pl steel 257 Self-Tapping Screw, steel 258 Retaining Ring, pl steel 259 Hub (Material is aluminum for all manufact-

uring locations except 416 SST for Europe,

Middle East, and Africa) 260 Mounting yoke, cast iron 261* Bearing

Size 60

25.4 mm (1 inch) valve shaft 12A9775X012

31.8 mm (1-1/4 inch) valve shaft 12A9558X012

38.1 mm (1-1/2 inch) valve shaft 12A9559X012

44.5 mm (1-3/4 inch) valve shaft 12A3848X012

50.4 mm (2 inch) valve shaft 12A9715X012

Size 80

63.5 mm (2-1/2 inch) valve shaft 12A9598X012 262 Lever, ductile iron 263 Cap Screw, pl steel 264 Machine Screw (Size 80 only) 265 Access Plate, aluminum 266 Cap Screw, pl steel 267 Vent Screen (Size 80 only) 268 Cap Screw, pl steel 269 Housing, cast iron 270 Positioner Plate, steel 271 Cap Screw, pl steel 272 Washer, pl steel (Size 80 only) 273 Cover, aluminum 274* Bearing

Size 60 12A9374X012 Size 80 14A7815X012

276 Sealant, 50 cc Loctite 242

*Recommended spare parts

350 Actuator

Instruction Manual

Form 1387

June 2002

PARTS NOT SHOWN: 267

APPL Y LUB/SEALANT

59A5500-D/DOC

PARTS NOT SHOWN: 95 & 248

BL4137-B/DOC

BOTTOM VIEW

Figure 9. Type 354 Actuator Yoke and Housing parts

Figure 10. Optional Bypass Valve Assembly

Key Description Part Number

277 Lubricant, Dow Corning 33 278 Cap Screw, pl steel 279 Set Screw, steel (Size 80 only) 280 Locknut, steel (Size 80 only) 282 Elbow, brass 283 Pipe Nipple, brass 284 Washer, pl steel 285 Disk, stainless steel 286 Wire Retainer

– – – Instruction Tag, Reservoir Pressure (not shown) – – – Instruction Tag, Input Signal (not shown) – – – Instruction Tag (not shown)

51 Handwheel, cast iron 54 Hex Jam Nut, pl steel 55 Ball, alloy steel

Key Description Part Number

72 mm (2-13/16 Inch) Yoke Boss Bolt-On Handwheel

56 Spring, bronze 132 Operating Nut, steel 136 Bearing Retainer, brass 142 Handwheel Body Cast iron/bronze 145 Handwheel Screw, brass/416 SST 146 Lever & Pin Ass’y, steel/bronze 149 Washer, pl steel 150 Lockwasher, steel 151 Bushing, steel 152 Ball Bearing, steel 153 Lever Pivot Pin 416 SST 154 E-Ring, steel 155 Lever Spacer, steel 156 Cap Screw, steel 157 Lockwasher, SST 158 Hex Nut, pl steel 159 Pointer Mounting Bolt, 416 SST 160 Pointer, 302 SST 161 Machine Screw, steel 162 Indicator Plate Aluminum 163 Cap Screw, steel 166 U-Bolt, steel 167 Guide Bolt, 416 SST 168 Set Screw 169 Grease Fitting 170 Hex Nut, steel 241 Lubricant Lubriplate Mag 1

Instruction Manual

Form 1387 June 2002

350 Actuator

DH4709-G/DOC

Figure 11. Amplifier Assembly with Optional Lock Valves

(Lock Valves—Keys 59A through 60)

350 Actuator

VALVE B

RESTRICT STROKING TIME TO EXTEND PISTON ROD

Instruction Manual

Form 1387

June 2002

30A6482-B/DOC

SECTION A-A

VALVE B

RESTRICT STROKING TIME TO RETRACT PISTON ROD

SECTION A-A

WITHOUT LOCK VALVES WITH LOCK VALVES

Figure 12. Optional Speed Control Valve

NOTE:

LEVER PIN (KEY 153) REPLACED BY ENGAGING PIN ON DECLUTCHABLE HANDWHEELS

APPL Y LUB/SEALANT

40A8779-D/DOC

Figure 13. Typical Bolt-On Handwheel (Non-Declutchable Type is Shown)

Instruction Manual

Form 1387 June 2002

350 Actuator

50A6748-F/DOC

Figure 14. 127 mm (5-Inch) Yoke Boss Size Type 350 Actuator with Integral Handwheel

350 Actuator

Instruction Manual

Form 1387

June 2002

Key Description Part Number

90 mm (3-9/16 Inch) Yoke Boss Bolt-On Handwheel

51 Handwheel, cast iron 54 Hex Jam Nut, pl steel 55 Ball, alloy steel 56 Spring, bronze 132 Operating Nut, steel 136 Bearing Retainer, steel 142 Handwheel Body, cast iron/bronze 143 U-Bolt, steel 144 Hex Nut, pl steel 145 Handwheel Screw, bronze 146 Lever & Pin Ass’y, steel/bronze 148 Dowel Pin, steel 149 Washer, pl steel 150 Lockwasher, steel 152 Ball Bearing, steel 153 Lever Pin, 416 SST 154 Retaining Ring, steel 154 Cotter Pin, steel 155 Spacer, steel 156 Cap Screw, steel 158 Hex Nut, pl steel 159 Pointer Mtg Bolt, 416 SST 160 Pointer, 302 SST 161 Machine Screw, steel 162 Indicator, aluminum 163 Cap Screw, steel 166 U-Bolt, steel 167 Guide Bolt, 416 SST 168 Set Screw, steel 169 Grease Fitting Non-declutchable 170 Hex Nut, pl steel 172 Chain, SST 173 Drive Screw, steel 177 Spring Cap, steel 178 Machine Screw, steel 241 Lubricant, Lubriplate Mag 1

127 mm (5-Inch) Yoke Boss Integral Handwheel

159 Locking Pin, 416 SST HT 170 Sleeve Ass’y, 416 SST 171 Set Screw, alloy steel 172 Gear Case, cast iron 173 Thrust Bearing 174 Worm Gear, bronze 175 Retainer, steel

Key Description Part Number

176 Cap Screw, pl steel 177 Key, steel 178 Travel Stop Nut, steel 179 Front Worm Retainer Steel 180 Back Worm Retainer Steel 181 Worm Shaft, steel 182 Handwheel cast iron 183 Handgrip, steel 184 Handgrip Bolt, steel 185 Handwheel Cap, Cast iron 186 Set Screw, steel 187 Grease Fitting 188 Ball, alloy steel 189 Spring, bronze 190 Ball Bearing 191 Hex Nut, pl steel 193 Adaptor, cast iron 197 Pointer, SST 199 Cap Screw, steel 226 Machine Screw, steel

90 mm (3-9/16 Inch) Yoke Boss Integral Handwheel

171 Set Screw, steel 174 Worm Gear, bronze 177 Key, steel 179 Front Worm Retainer, steel 180 Back Worm Retainer, steel 181 Worm Shaft, steel 182 Handwheel, cast iron 183 Hand Grip, steel 184 Hand Grip Bolt, steel 185 Handwheel Cap 186 Set Screw, steel 187 Grease Fitting 188 Ball, alloy steel 189 Spring, bronze 190 Ball Bearing, steel 197 Handwheel Indicator SST 226 Machine Screw, pl steel 227 Actuator Stem 316 SST 228 Upper Sleeve, steel 229 Needle Bearing, steel 230 Needle Bearing Race, steel 231 Bearing Retainer Flange, Cast iron 232 Needle Bearing, steel 233 Needle Bearing Race, steel 234 Lower Sleeve, steel 235 Cover Band Ass’y, steel 236 Cap Screw, pl steel 237 Washer, brass 240 Plate, steel

Instruction Manual

Form 1387 June 2002

350 Actuator

Instruction Manual

Form 1387

June 2002

Fisher is a mark owned by Fisher Controls International, Inc., a business of Emerson Process Management. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their respective owners.

Emerson Process Management

Fisher

Marshalltown, Iowa 50158 USA Cernay 68700 France Sao Paulo 05424 Brazil Singapore 128461

www.Fisher.com

Emerson 350 series Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

350 Series Electrohydraulic Actuators

Introduction

Scope of Manual

Description

Type Number Description

Specifications

Installation

Valve Body and Actuator

Hydraulic Fluid

Electrical Connections

Power

Input Signal

Seal Drain-Off Connection

Startup

Adjustments

Bypass Valve and Handwheel Operation

Bypass Valve

Bolt-On Handwheels

Integrally Mounted Gear-Type Handwheels

Speed Control Valve

Changing Actuator Action

Split-Range Operation

Principle of Operation

Lock-in-Last Position

Fault-Correction Guide

Maintenance

Removing Casing Plate Assembly

Cleaning Force Motor

Cleaning Primary Restrictions

Checking and Adjusting Pump Pressure

Adjusting Nozzles

Low-Pressure Nozzles

Adaptor Plug O-Rings

Upper Piston Rod Seal and Piston Seals

High-Pressure Nozzles

Replacing Oil Seals

Lower Piston Rod Seal

Handwheel Maintenance

Bolt-On Handwheels

Integrally Mounted Gear-Type Handwheels

Mounting Actuator and Adjusting Stem Connection

Type 350

Type 354 Actuator Mounting

Type 354 Valve Travel Adjustment

Changing Type 354 Actuator Mounting

Parts Ordering

Parts Kits

Parts List

Actuator

72 mm (2-13/16 Inch) Yoke Boss Bolt-On Handwheel

90 mm (3-9/16 Inch) Yoke Boss Bolt-On Handwheel

90 mm (3-9/16 Inch) Yoke Boss Integral Handwheel