Fisher Emerson p539 User manual

Type P539A

Instruction Manual

MCK-2161

July 2014

D450215T012

www.fisherregulators.com

Type P539 Pneumatic Actuator with Type P539A

Hardware Retrot Kit

WARNING

Failure to follow these instructions or

to properly install and maintain this

equipment could result in an explosion

and/or re causing property damage and

personal injury or death.

Fisher®equipment must be installed,

operated and maintained in accordance

with federal, state and local codes and

Emerson Process Management Regulator

Technologies, Inc. instructions. The

installation in most states must also

comply with NFPA No. 58, ANSI K61.1 and

DOT standards.

Only personnel trained in the proper

procedures, codes, standards and

regulations of the LP-Gas or Anhydrous

Ammonia (NH3) industries should install

and service this equipment.

Introduction

This product kit manual provides instructions for

easy upgrade of Type P539 pneumatic actuator to a

Type P539A actuator with minimum parts and the

re-use of air chamber and clevis from the Type P539.

CAUTION

Only qualied service person should

attempt to repair these valves.

WARNING

To prevent personnel injury and or

property, before starting any type of repair,

close off the upstream valves and remove

all gas pressure from both the outlet

and inlet sides of the N550/N551 Series

Emergency Shut-off Valve (ESV).

Type P539 Removal

Refer to Figure 4. The following repair steps can be

completed with the N550/N551 Series (ESV) installed in

the line:

1. Follow Warning above and depressurize the

inlet and outlet side of the Emergency Shut-off

Valve (ESV).

2. Ensure there is no pressure on the pressure supply

line to the actuator.

P1187

Figure 1. Type P539A Installed on N550/N551 Series (ESV)

Type P539A

3. Remove cotter pin (key 8D) and clevis pin (key 8C)

from the clevis (key 8B) eye.

4. Remove the bolt (key 7) from the ESV input shaft.

5. Remove the lever (key 5) and the spacer

(not shown).

6. Remove the mounting cap screws (key 15) and the

spacer (not shown) which attach the Type P539

mounting bracket to the N550/N551 Series.

7. Remove both gland bolts of N550/N551 Series

ESV (Figure 2) in order to remove the Type P539

assembly from the valve.

Once the gland bolts are removed, the retainer plate,

see Figure 2, of N550/N551 Series ESV will rotate

1/2 turn counter clockwise. It is VERY IMPORTANT

that the retainer plate be turned 1/2 turn clockwise prior

to re-installing the gland bolts and installing the new

Type P539A hardware kit.

Installing Type P539A Replacement

Hardware Kit

Refer to Figure 4.

1. Remove the Brake Chamber Assembly (key 8)

from the Mounting Bracket (key 1) by removing

the two nuts/lockwashers (key 7). Keep the nuts

and lockwashers.

2. Using the nuts and lockwashers, assemble the Brake

Chamber assembly to the new bracket (key 1).

3. Mount the actuator bracket onto the ESV’s rear gland

bolt (Figure 2) and in the same direction as shown in

Figure 4. Rotate the retainer plate 1/2 turn clockwise

before reinstalling the rear gland bolt. Refer to

Figure 2. Tighten the gland bolts (Figure 2) evenly

with a minimum torque of 8 ft-pounds / 11 N•m.

Specications

The Specication section below shows specications for the Type P539A Pneumatic Actuator.

Pressure Source

Air or Nitrogen

System Pressure Limits(1)

Minimum: 20 psig / 1.4 bar

Maximum: 30 psig / 2.1 bar(2)

Recommended: 20 to 25 psig / 1.4 to 1.7 bar

Temperature Capabilities(2)

-40 to 150°F / -40 to 66°C

Return Mechanism

Internal spring, no air

Melt Point, Fuse Link

212°F / 100°C

1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.

2. Pressures in excess of 30 psig / 2.1 bar shorten the service life of the N550/N551 Series valve.

Note: Maximum pressure rating for the brake chamber is 125 psig / 8.6 bar.

DO NOT OVER TIGHEN THE GLAND BOLT as

overtightening the gland can cause the ESV shaft

to bind.

4. Install the cap screws (key 15) through hole in the

bracket and attach to the N550/N551 Series body.

Assembly to Type N550-10/N551-10

To install the Type P539A to the Type N550-10/N551-10,

NPS 1-1/4 / DN 32 size, you must utilize the adaptor

plate which was used to attach the latch block. Remove

the adaptor plate and attach to the actuator mounting

bracket as shown in Figure 3. Then mount the assembly

to the N550/N551 Series body.

5. Put the lever on the ESV shaft and then reinstall the

bolt (key 7) and the lockwasher (key 7).

6. Connect the actuating pressure line tubing to the air

port (key 10), quick connect tting.

Note

The clevis (key 8B) is factory installed

such that the clevis eye is at 3 in. / 76 mm

from the face of the brake chamber for

optimal installation on N550/N551 Series.

Some additional adjustments may need to

be made to get complete valve closure.

After installing the Type P539A Retrot Kit, operate the

actuator with pressure to see that it smoothly opens

and closes the N550/N551 Series without sticking or

jamming. Check to make sure the N550/N551 Series

shuts tightly.

If the actuator does not close the ESV pressure tight after

assembling the Type P539A Actuator then, adjust the

clevis’ position by loosening the clevis nut (key 8E) and

adjust the clevis’ (key 8B) position to t the lever (key 5)

on the ESV shaft, then tighten the clevis nut to hold the

clevis at this position.

Type P539A

Three-Way Valve Operation for

Type P5394A Actuator

If not already installed, a small three-way control

valve (sold separately, part number T1139599012) for

pneumatic ESV installations can be used as primary

control (used to open or close the ESV) or an auxiliary

remote release (close only).

Placing the valve’s button in the upward position

permits pressure to the actuator; pushing the button

down exhausts pressure to close all valves connected

to the system.

Maintenance

WARNING

Only qualified service person should

attempt to repair these valves. Before

starting any type of repair, close off

the upstream valve and remove all

pressure from both the inlet and outlet

of the N550/N551 Series Emergency

Shut-off Valve (ESV).

Because the actuator has a diaphragm seal and

no rod bearing, internal lubrication is not required.

Periodic lubrication of the operating lever/clevis pivot

is recommended.

At least once a month inspect and check the

following things:

1. Make that the actuator fully opens and closes the

ESV without sticking. Keep actuator’s rod free

of any build-up of mud and corrosive or other

foreign materials. Such build-up could prevent the

actuator from closing which could jam the internal

valve in the open position. Do not permit this

condition to occur.

2. Make sure that the lever and clevis are working

smoothly. The latch parts and lever are easily

accessible for replacement or repair by removing

the securing bolts (key 7).

3. Check for packing and joint leakage on the

N550/N551 Series valve.

Figure 3. NPS 1-1/4 Bracket Adaptor

Figure 2. Tighten Gland Bolts Evenly to Keep Retainer Plate

Parallel to the Valve Body

N550/N551 SERIES EMERGENCY SHUT-OFF VALVE GLAND BOLTS

RETAINER PLATE

REAR GLAND BOLT

ADAPTOR PLATE

MOUNTING

BRACKET

Type P539A

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a business of Emerson Process Management.

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 specications of such

products at any time without notice.

Emerson Process Management Regulator Technologies, Inc. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and