Emerson Biffi Morin Series User manual

Installation, Operation and Maintenance Manual
MAN-03-04-103-0738-EN Rev. 1
May 2020
Bif Morin Series A, B, C, and S
Scotch Yoke Actuators
Copyright © Bif. The information in this document is subject to change without notice. Updated data sheets can be obtained from our website www.bif.it or from your nearest Bif Center:
Bif Italia s.r.l. - Strada Bif 165, 29017 Fiorenzuola d'Arda (PC) – Italy PH: [phone] – bif_italia@bif.it

Installation, Operation and Maintenance Manual
MAN-03-04-103-0738-EN Rev. 1
Notes
May 2020
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Installation, Operation and Maintenance Manual
MAN-03-04-103-0738-EN Rev. 1
Table of Contents
Table of Contents
May 2020
Table of Contents
Section 1: Introduction
1.1 General Application..................................................................................... 1
1.2 Technical Data............................................................................................. 1
1.3 Installation.................................................................................................. 1
Section 2: Maintenance
Maintenance......................................................................................................... 2
Section 3: Jackscrew Override
3.1 Jackscrew Operating Instructions................................................................ 3
3.2 Actuator Stroke Adjustment........................................................................ 3
3.3 Models 006 through 270 ............................................................................ 3
3.4 Models 370, 575 and 740............................................................................ 4
Section 4: Actuator Construction
Actuator Construction .......................................................................................... 5
Section 5: Manual Handpump Hydraulic Override
5.1 Hydraulic Fluid Level ................................................................................. 13
5.2 Remote Mounting the Handpump............................................................. 13
Section 6: Integral Proximity Switch Mounting
Integral Proximity Switch Mounting.................................................................... 14
Section 7: Spring Conversion to change Operating Pressure
Spring Conversion to change Operating Pressure................................................ 15
Section 8: Failure Mode Change - Spring-Return
Failure Mode Change - Spring-Return.................................................................. 16

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Installation, Operation and Maintenance Manual
MAN-03-04-103-0738-EN Rev. 1
Table of Contents
Table of Contents
May 2020
Section 9: Removal of Actuator from Valve
Removal of Actuator from Valve.......................................................................... 17
Section 10: Disassembly
10.1 Disassembly of Symmetric Yoke Actuators ................................................ 18
10.2 Disassembly of Canted Yoke Actuators...................................................... 20
Section 11: Assembly
11.1 Assembly of Symmetric Yoke Actuators .................................................... 21
11.2 Spring-Return Only ................................................................................... 26
11.3 Assembly of Canted Yoke Actuators .......................................................... 27
Section 12: Operating Instructions
Operating Instructions........................................................................................ 28
Section 13: Important Safeguards
Important Safeguards......................................................................................... 29
Section 14: Additional Safety Instructions for Actuators
used in a Potentially Explosive Atmosphere
under ATEX 2014/34/EU
14.1 Marking .................................................................................................... 30
14.2 Selection................................................................................................... 30
14.3 Installation................................................................................................ 30
14.4 Maintenance............................................................................................. 30
Section 15: Additional Safety Instructions for Actuators
used in Emergency Shut-down Service
or IEC 61508 safety integrity level (SIL)
Compliant Installations
Additional Safety Instructions for Actuators used in Emergency
Shut-down Service or IEC 61508 safety integrity level (SIL)
Compliant Installations....................................................................................... 31

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Installation, Operation and Maintenance Manual
MAN-03-04-103-0738-EN Rev. 1 May 2020
Introduction
Section 1: Introduction
1.1 General Application
Actuators are designed for "ON-OFF" or modulating control of any quarter-turn ball,
buttery, rotary plug or damper style valve application.
1.2 Technical Data
1.3 Installation
The actuator can be mounted parallel or perpendicular to pipeline. The actuator can
be installed in any convenient position including vertical, horizontal or upside down.
A. Bolt mounting bracket to actuator hand tight. Do not tighten yet.
B. Install coupling on valve. Be sure rotary stops on valve are removed or adjusted
to allow actuator stops to do the stopping.
C. Install actuator and bracket to valve being sure to leave all fastener connections
hand tight. If possible, stroke valve and actuator to a half open position 45° and
physically shift actuator back and forth until coupling and all fasteners are relaxed
then tighten all bolts and nuts. This procedure will accurately align valve stem to
actuator output shaft and prolong valve stem seal life. Lift the actuator at a balance
point near the center housing. Do not lift the weight of the valve, see Figure 1.
D. Cycle valve / actuator assembly and observe for smooth operation.
E. Adjust travel stops for perfect alignment in both open and closed positions.
NOTICE
If jackscrew override is installed, please refer to Section 3 for stroke adjustment.
F. Tubing connections - some models utilize two pistons for added power.
Spring-return (single acting) dual cylinders designs require one "jumper" to make
the supply port common on both pistons. Double-acting (air to air) dual cylinder
designs require two "jumpers". See Figure 2 for typical arrangement.
! CAUTION
Use correct length mounting bolts! Mounting bolts used in actuator mounting pad may
interfere with the actuator rotary mechanism. Select bolts that will not extend more than
two threads above the back of the mounting pad.
Supply Pressure 40 - 160 psig (2.75 - 11 barg), see product nameplate
Supply Medium any pneumatic uid compatible with materials of construction
Temperature Rating Standard Range: -20 °F to +210 °F (-28 °C to +99 °C)
Optional Range: -65 °F to +300 °F (-54 °C to +149 °C)
Angular Rotation 90 degrees ± 8 degrees
Section 1: Introduction

2
SINGLE ACTING ACTUATOR
TWO CYLINDERS WITH JUMPER
DOUBLE ACTING ACTUATOR
TWO CYLINDERS WITH JUMPER
SUPPLYSUPPLY
EXHAUS
TE
XHAUST
SOLENOID
OR
POSITIONER
SOLENOID
OR
POSITIONER
SINGLE ACTING ACTUATOR
ONE CYLINDER
DOUBLE ACTING ACTUATOR
ONE CYLINDER
SUPPLYSUPPLY
EXHAUSTEXHAUST
SOLENOID
OR
POSITIONER
SOLENOID
OR
POSITIONER
SHUT
SHUT
OPEN
OPEN
Installation, Operation and Maintenance Manual
MAN-03-04-103-0738-EN Rev. 1
Figure 2
Section 2: Maintenance
Actuators are factory lubricated and in general do not require periodic lubrication or
maintenance while in service. Actuators should be visually inspected periodically for
corrosion damage and promptly repaired. Actuators should be operated at least annually
to assure proper operation.
Figure 1
Maintenance
May 2020
DOUBLE-ACTING ACTUATOR
TWO CYLINDERS WITH JUMPER
EXHAUST
SOLENOID
OR
POSITIONER
SUPPLY
EXHAUST
SOLENOID
OR
POSITIONER
SUPPLY
SINGLE ACTING ACTUATOR
TWO CYLINDERS WITH JUMPER
Section 2: Maintenance

3
OPEN
SHUT
OPEN
SHUT
Installation, Operation and Maintenance Manual
MAN-03-04-103-0738-EN Rev. 1
Jackscrew Override
Section 3: Jackscrew Override
The jackscrew option is intended for infrequent or emergency on-site operation of the
automated valve.
3.1 Jackscrew Operating Instructions
1. Disengage power supply and vent air from actuator.
2. Operate the handwheel to drive the actuator into the desired position. Valve
position can be veried by checking the actuator position indicator. For models
006 through 270, the jackscrew must be returned to the fully retracted position
before actuator can resume normal operation. Back the jackscrew out until it
stops. Air will leak from the jackscrew unless it has been fully retracted against
its internal seal.
3.2 Actuator Stroke Adjustment
The jackscrew has a built-in actuator stroke adjustment, see Figure 3 and 4.
3.3 Models 006 through 270
See Figure 3:
1. Retract the jackscrew override completely by rotating counter clockwise.
2. Loosen the lock nut and turn the brass adjusting screw to the desired position.
The handwheel will rotate with the adjusting screw. Never make stroke
adjustments by turning the handwheel only.
3. Tighten lock nut.
Figure 3 Jackscrew Override - Models 006 through 270
May 2020
Section 3: Jackscrew Override
JACKSCREW FULLY RETRACTED JACKSCREW EXTENDED
Jackscrew seal
Seal
Lock nut
Jackscrew
Stroke adjusting screw
Note: Air escapes unless
jackscrew is fully retracted
Actuator stroke
adjusting screw

4
OPEN
SHUT
OPEN
SHUT
Installation, Operation and Maintenance Manual
MAN-03-04-103-0738-EN Rev. 1
Jackscrew Override
Lock nut
Lock nut
Handwheel
Stroke adjusting
screw
Sealed jackscrew
assembly
Stroke
adjusting screw
3.4 Models 370, 575 and 740
See Figure 4:
1. Retract the jackscrew override completely by rotating clockwise.
2. Loosen the stroke adjusting screw and lock nut.
3. Using the handwheel, turn the jackscrew to adjust the actuator to the
desired position.
4. Screw the adjusting screw until it stops and tighten lock nut.
Section 3: Jackscrew Override
May 2020
Figure 4 Jackscrew Override - Models 370, 575 and 740

5
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Installation, Operation and Maintenance Manual
MAN-03-04-103-0738-EN Rev. 1
Actuator Constructrion
Section 4: Actuator Construction
Single acting Spring-Return Two Pistons
Models: 012, 046, 058, 059, 072, 100, 270, 344, 345, 420, 740, 944, 945, 1150, 1480,
1929, 1930, 2380
Single acting Spring-Return One Piston
Models: 003, 006, 015, 023, 036, 050, 135, 210, 370 and 575
Double-Acting Air to Air Two Pistons
Models: 012, 059, 072, 100, 270, 345, 420, 740, 945, 1150, 1480, 1930, 2380
Section 4: Actuator Construction
May 2020

6
SECTION A-A, MODELS 003 - 1150
YOKE SHOWN AT MID-STROKE,
POINTER OMITTED FOR CLARITY
SECTION A-A, MODELS 135 - 1150
Installation, Operation and Maintenance Manual
MAN-03-04-103-0738-EN Rev. 1
Actuator Construction
SECTION A-A, MODELS 135 - 1150
YOKE SHOWN AT MID-STROKE,
POINTER OMITTED FOR CLARITY
SECTION A-A, MODELS 003 - 1150
Double-Acting Air to Air One Piston
Models: 003, 006, 015, 023, 036, 050, 135, 210, 370, 575
Single acting Spring-Return Two Pistons
Models: 1485, 1934, 1935, 2385-5336
Section 4: Actuator Construction
May 2020