Emerson Bettis M3 Manuale utente
Service Instructions
153701 Rev. D
October 2014
Operating Instructions M3 and M3HW
Jackscrew Manual Override
I
Service Instructions
153701 Rev. D
Table of Contents
October 2014
Table of Contents
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
1
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
2
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
4
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
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The Emerson logo is a trademark and service mark of Emerson Electric Co.
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