Emerson Bettis M3 Manuale utente

Service Instructions

153701 Rev. D

October 2014

Operating Instructions M3 and M3HW

Jackscrew Manual Override

Service Instructions

153701 Rev. D

Table of Contents

October 2014

Table of Contents

Section 1: Operating Instructions for CBA M3/M3HW, NCBA

M3, CBB M3/M3HW, NCBB M3, G M3/M3HW and

NG M3 Series (Jackscrew Override)

1.1 Operating Procedure for M3 Jackscrew....................................................... 1

1.2 Return M3 to Regular Service...................................................................... 2

Section 2: Operating Instructions for HD, NHD, T and NT

Series M3/M3HW (Jackscrew Override)

2.1 Operating Procedure for M3 Jackscrew....................................................... 3

2.2 Return M3 to Regular Service...................................................................... 3

Section 3: Document Revision

Service Instructions

153701 Rev. D

October 2014

Section 1: Operating Instructions

Operating Instructions

Section 1: Operating Instructions for CBA

M3/M3HW, NCBA M3, CBB M3/

M3HW, NCBB M3, G M3/M3HW

and NG M3 Series

(Jackscrew Override)

NOTE:

The M3/M3HW have left handed threads (that is, rotate counterclockwise to screw in).

NOTE:

For operating instructions for the “HD” Series M3/M3HW (Jackscrew Override), skip

Page 1 and proceed to Page 2.

1.1 Operating Procedure for M3 Jackscrew

1.1.1 Bleed off and remove all pressure to the actuator. On double-acting actuators,

make sure that both ends of cylinder (s) are exhausted and vented to

atmosphere.

1.1.2 Apply a generous coating of grease to the M3 threads before operating.

1.1.3 Loosen the M3 locking nut and turn M3 counterclockwise sufficiently to allow

for the customers' desired actuator travel (that is, to screw in and override the

actuator).

Service Instructions

153701 Rev. D

October 2014

Section 1: Operating Instructions

Operating Instructions

1.2 Return M3 to Regular Service

1.2.1 Turn M3 clockwise until the actuator is returned to its original position.

1.2.2 If desirable, wipe away excess grease on M3 after operation.

NOTE:

If preferred, grease may be left on M3 to provide additional corrosion protection.

1.2.3 Turn jam nut counterclockwise until tight.

1.2.4 Restore supply pressure to the actuator's power cylinder.

Service Instructions

153701 Rev. D

October 2014

Section 2: Operating Instructions Part 2

3Operating Instructions Part 2

Section 2: Operating Instructions for HD,

NHD, T and NT Series M3/M3HW

(Jackscrew Override)

NOTE:

The M3/M3HW have right handed threads (that is, rotate clockwise to screw in).

2.1 Operating Procedure for M3 Jackscrew

2.1.1 Bleed off and remove all pressure to the actuator. On double-acting actuators,

make sure that both ends of cylinder (s) are exhausted and vented to

atmosphere.

2.1.2 Apply a generous coating of grease to the M3 threads before operating.

2.1.3 Loosen the M3 locking nut and turn M3 clockwise sufficiently to allow for

the customers' desired actuator travel (that is, to screw in and override the

actuator).

2.2 Return M3 to Regular Service

2.2.1 Turn M3 counterclockwise until the actuator is returned to its original position.

2.2.2 If desirable, wipe away excess grease on M3 after operation.

NOTE:

If preferred, grease may be left on M3 to provide additional corrosion protection.

2.2.3 Turn jam nut clockwise until tight.

2.2.4 Restore supply pressure to the actuator's power cylinder.

Service Instructions

153701 Rev. D

October 2014

Section 3: Document Revision

Document Revision

Section 3: Document Revision

Table 1. Revision Overview

ECN DATE REV BY * DATE

VAWCO925 January 2011 D COMPILED B. Jumawan 14 January 2011

CHECKED D. Blahnik 14 January 2011

APPROVED Kenneth Chin 14 January 2011

* Signatures on file Emerson, Actuation Technologies, Waller, Texas

For complete list of sales and manufacturing sites, please visit

www.emerson.com/actuationtechnologieslocations or contact us at

info.actuationtechnologie[email protected]om

World Area Conﬁ guration Centers (WACC) offer sales support, service,

inventory and commissioning to our global customers.

Choose the WACC or sales ofﬁ ce nearest you:

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www.emerson.com/bettis

The Emerson logo is a trademark and service mark of Emerson Electric Co.

BettisTM is a mark of one of the Emerson family of companies.

All other marks are property of their respective owners.

The contents of this publication are presented for information 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. All sales are governed by our terms and conditions, which

are available on request. We reserve the right to modify or improve the

designs or specifications of our products at any time without notice.

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