
Type OS2
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Francel is a mark of Francel SAS, 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 specications of such products at any
time without notice.
Emerson Process Management does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Emerson Process
Management product remains solely with the purchaser.
©Emerson Process Management Regulator Technologies, Inc., 2007, 2014; All Rights Reserved
Industrial Regulators
Emerson Process Management
Regulator Technologies, Inc.
USA - Headquarters
McKinney, Texas 75070, USA
Tel: +1 800 558 5853
Outside U.S. +1 972 548 3574
Asia-Pacic
Shanghai 201206, China
Tel: +86 21 2892 9000
Europe
Bologna 40013, Italy
Tel: +39 051 419 0611
Middle East and Africa
Dubai, United Arab Emirates
Tel: +011 971 4811 8100
For further information visit www.emersonprocess.com/regulators
Natural Gas Technologies
Emerson Process Management
Regulator Technologies, Inc.
USA - Headquarters
McKinney, Texas 75070, USA
Tel: +1 800 558 5853
Outside U.S. +1 972 548 3574
Asia-Pacic
Singapore 128461, Singapore
Tel: +65 6777 8337
Europe
O.M.T. Tartarini s.r.l. Via P. Fabbri 1,
I-40013 Castel Maggiore (Bologna), Italy
Tel: +39 051 419 0611
Francel SAS, 3 ave Victor Hugo,
CS 80125 - Chartres 28008, France
Tel: +33 2 37 33 47 00
Middle East and Africa
Dubai, United Arab Emirates
Tel: +011 971 4811 8100
TESCOM
Emerson Process Management
Tescom Corporation
USA - Headquarters
Elk River, Minnesota 55330-2445, USA
Tels: +1 763 241 3238
+1 800 447 1250
Asia-Pacic
Shangai 201206, China
Tel: +86 21 2892 9499
Europe
Selmsdorf 23923, Germany
Tel: +49 38823 31 287
O.M.T. Ofcina Meccanica Tartarini S.R.L., R.E.A 184221 BO Cod. Fisc. 00623720372 Part. IVA 00519501209 N° IVA CEE IT 00519501209,
Cap. Soc. 1.548 000 Euro i.v. R.I. 00623720372 - M BO 020330
Francel SAS, SIRET 552 068 637 00057 APE 2651B, N° TVA : FR84552068637, RCS Chartres B 552 068 637, SAS capital 534 400 Euro
MAINTENANCE (BMS)
• Control
The safety valve and pressure accessories are subject
to normal wear and must be inspected periodically and
replaced if necessary.
- Slam shut releasing
- External tight shut
- Impulse part (diaphragm, bellows or piston)
The frequency of inspections, checks and replacement
depends on the severity of service conditions and must
comply with the national or industrial codes, standards
and regulations/recommendations applicable.
• Disassembly
- Unscrew the connector form the sensing line
- Remove the safety manometric box (BMS)
- Unscrew the blocking nut on the adjustment
screw (manually)
- Unscrew the adjustment screw (resetting tool)
- Remove the hook or plate, depending on the type of
Type BMS 1 or 2, from the detection rod
(flat spanner 7)
- Remove the upper case
BMS 162 (flat spanner 11)
BMS 071 (flat spanner 8)
BMS piston 27/17 (key 5)
BMS bellows 236/315 (key 5)
- Disassemble the set plate/counter plate (flat spanner 17
and pliers) or
- Remove the bellows or piston and guide (manually)
• Assembly
- Proceed in reverse order to disassembly
• BMS torque values
- Upper spring case/manometric box
BMS162: 8N•m
BMS071: 5N•m
BMSpiston27/17: 6N•m
BMSbellows236/315: 6N•m
- BMS162and071nut/diaphragmplate: 20N•m
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