PIETRO FIORENTINI 30051 User manual

MANUALE USO,MANUALE USO,
MANUTENZIONEMANUTENZIONE
E AVVERTENZAE AVVERTENZA
Regolatori per gas di bassa pressione
IT
Revision A - Edition 09/2022
GOVERNORS
USE, MAINTENANCEUSE, MAINTENANCE
AND WARNINGAND WARNING
MANUALMANUAL
Low pressure gas regulators
EN

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1 - INTRODUCTION
FOREWORD
All rights reserved. No part of this publication may be reproduced, distributed, translated into other languages or trans-
mitted by any electronic or mechanical media, including photocopies, recording or any other storage and retrieval system,
for any other purposes that are not exclusively the personal use of the buyer, without the express written permission of
the Manufacturer.
The manufacturer is in no way responsible for the consequences of operations carried out in a manner not in accordance
with the manual.
GENERAL REMARKS
All the operating, maintenance instructions and recommendations described in this manual must be adhered to in order
to:
• obtain the best possible performance from the equipment;
• keep the equipment in efcient conditions.
Training the personnel in charge is essential in order to:
• properly use the equipment;
• correctly apply the safety alerts and procedures recommended.
Revision: A
COPYRIGHT 2023
© PIETRO FIORENTINI S.P.A.

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1.1 - REVISION HISTORY
Revision
index Date Revision contents
A21/09/2022 First issue
Tab. 1.1.

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INDEX
1 - INTRODUCTION .................................................................................................................. 3
1.1 - REVISION HISTORY.................................................................................................................................. 5
2 - GENERAL INFORMATION .................................................................................................. 9
2.1 - MANUFACTURER IDENTIFICATION.......................................................................................................... 9
2.2 - IDENTIFICATION OF THE PRODUCT ........................................................................................................ 9
2.3 - REGULATORY FRAMEWORK................................................................................................................... 9
2.4 - WARRANTY............................................................................................................................................ 10
2.5 - ADDRESSEES, SUPPLY AND STORAGE OF THE INSTRUCTION MANUAL ........................................... 10
2.6 - LANGUAGE ............................................................................................................................................ 10
2.7 - SYMBOLS USED IN THE MANUAL......................................................................................................... 11
2.8 - APPLIED RATING PLATES...................................................................................................................... 12
2.8.1 - GLOSSARY FOR NAMEPLATES ...........................................................................................................14
2.9 - GLOSSARY OF MEASUREMENT UNITS................................................................................................. 16
2.10 -QUALIFIED PROFESSIONAL FIGURES................................................................................................... 16
3 - SAFETY .............................................................................................................................. 17
3.1 - GENERAL SAFETY WARNINGS.............................................................................................................. 17
3.2 - PERSONAL PROTECTIVE EQUIPMENT.................................................................................................. 18
3.3 - OBLIGATIONS AND PROHIBITIONS ....................................................................................................... 19
3.4 - SAFETY PICTOGRAMS .......................................................................................................................... 19
3.5 - RISK LEVEL ............................................................................................................................................ 19
3.6 - RESIDUAL RISKS ................................................................................................................................... 20
3.6.1 - TABLE SHOWING RESIDUAL RISKS DUE TO PRESSURE ...................................................................21
3.6.2 - TABLE OF RESIDUAL RISKS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES ...................................23
4 - DESCRIPTION AND OPERATION .................................................................................... 25
4.1 - VERSIONS, MODELS AND CONFIGURATIONS ...................................................................................... 25
4.1.1 - SURFACE TREATMENTS ......................................................................................................................26
4.2 - GENERAL DESCRIPTION ....................................................................................................................... 27
4.2.1 - ZERO VERSION DESCRIPTION ............................................................................................................28
4.3 - OPERATION............................................................................................................................................ 29
4.4 - INTENDED USE ...................................................................................................................................... 30
4.4.1 - ENVISAGED USE ..................................................................................................................................30
4.4.2 - REASONABLY FORESEEABLE MISUSE ...............................................................................................30
4.4.3 - TYPES OF FLUIDS................................................................................................................................30

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4.5 - TECHNICAL/FUNCTIONAL FEATURES................................................................................................... 31
4.5.1 - FLOW COEFFICIENTS ..........................................................................................................................32
4.6 - SAFETY DEVICES................................................................................................................................... 33
4.6.1 - SAFETY DIAPHRAGM...........................................................................................................................33
4.6.2 - SLAM-SHUT VALVE FOR MINIMUM AND MAXIMUM PRESSURE .......................................................34
4.6.3 - PRESSURE OUTLET.............................................................................................................................35
4.6.3.1 - PROCEDURE OF USE WITH STANDARD PRESSURE OUTLET ...................................................36
5 - TRANSPORT AND HANDLING......................................................................................... 37
5.1 - SPECIFIC WARNINGS FOR TRANSPORT AND HANDLING ................................................................... 37
5.1.1 - PACKAGING AND FASTENERS USED FOR TRANSPORT ....................................................................38
5.2 - PHYSICAL CHARACTERISTICS OF GOVERNOR WITH AND WITHOUT FILTER..................................... 39
5.2.1 - PHYSICAL CHARACTERISTICS OF GOVERNOR WITH SLAM-SHUT VALVE........................................40
5.2.2 - PHYSICAL CHARACTERISTICS ZERO VERSION..................................................................................41
5.2.3 - PHYSICAL CHARACTERISTICS RATIO VERSION.................................................................................42
5.3 - EQUIPMENT ANCHORING AND LIFTING METHOD................................................................................ 43
5.3.1 - FORKLIFT HANDLING METHOD...........................................................................................................44
5.4 - PACKAGING REMOVAL.......................................................................................................................... 46
5.4.1 - PACKAGING DISPOSAL .......................................................................................................................46
5.5 - STORAGE AND ENVIRONMENTAL CONDITIONS .................................................................................. 47
5.5.1 - STORAGE LASTING LONGER THAN THE MAXIMUM TIME ALLOWED................................................47
6 - COMMISSIONING/MAINTENANCE EQUIPMENT........................................................... 49
6.1 - LIST OF EQUIPMENT.............................................................................................................................. 49
7 - INSTALLATION .................................................................................................................. 51
7.1 - INSTALLATION PRE-REQUISITES........................................................................................................... 51
7.1.1 - ALLOWED ENVIRONMENTAL CONDITIONS.........................................................................................51
7.1.2 - STORAGE LASTING LONGER THAN THE MAXIMUM TIME ALLOWED................................................51
7.1.3 - CHECKS BEFORE INSTALLATION........................................................................................................52
7.2 - SPECIFIC SAFETY INSTRUCTIONS FOR THE INSTALLATION STEP ...................................................... 53
7.3 - GENERAL INFORMATION ON THE LINE ................................................................................................ 54
7.3.1 - INSTALLATION TYPE (STANDARD/GOVAL VERSION)...........................................................................55
7.3.2 - ZERO VERSION INSTALLATION............................................................................................................56
7.3.3 - INSTALLATION RATIO VERSION ...........................................................................................................57
7.4 - INSTALLATION PROCEDURES............................................................................................................... 58
7.4.1 - POST-INSTALLATION INSTRUCTIONS..................................................................................................59

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7.5 - EQUIPMENT ADJUSTMENTS................................................................................................................. 59
7.5.1 - ADJUSTMENTS STANDARD VERSION ................................................................................................60
7.5.2 - ZERO VERSION ADJUSTMENTS .........................................................................................................61
7.5.3 - RATIO VERSION ADJUSTMENTS ........................................................................................................62
8 - COMMISSIONING ............................................................................................................. 63
8.1 - GENERAL WARNINGS ........................................................................................................................... 63
8.1.1 - SAFETY REQUIREMENTS FOR COMMISSIONING ...............................................................................63
8.2 - PRELIMINARY PROCEDURES FOR COMMISSIONING .......................................................................... 64
8.3 - CALIBRATION OF SAFETY DEVICES...................................................................................................... 64
8.4 - COMMISSIONING THE REGULATOR ..................................................................................................... 64
8.4.1 - COMMISSIONING OF THE STANDARD VERSION REGULATOR...........................................................65
8.4.2 - ZERO VERSION REGULATOR COMMISSIONING.................................................................................66
8.4.3 - PUTTING THE RATIO VERSION REGULATOR INTO SERVICE ..............................................................67
8.5 - PROPER COMMISSIONING CHECK ...................................................................................................... 68
9 - MAINTENANCE AND FUNCTIONAL CHECKS................................................................ 69
9.1 - GENERAL WARNINGS ........................................................................................................................... 69
9.2 - PERIODICALLY CHECKING AND INSPECTING THE EQUIPMENT FOR PROPER OPERATION .............. 70
9.2.1 - FUNCTIONAL CHECKS OF SAFETY DEVICES......................................................................................70
9.3 - TIGHTENING TORQUES......................................................................................................................... 71
9.4 - GOVERNOR MAINTENANCE.................................................................................................................. 72
10 - UNINSTALLATION AND DISPOSAL ................................................................................. 79
10.1 -GENERAL SAFETY WARNINGS.............................................................................................................. 79
10.2 -QUALIFICATION OF THE OPERATORS IN CHARGE............................................................................... 79
10.3 -UNINSTALLATION................................................................................................................................... 79
10.4 -INFORMATION REQUIRED IN CASE OF NEW INSTALLATION................................................................ 80
10.5 -DISPOSAL INFORMATION...................................................................................................................... 80
11 - CALIBRATION TABLES..................................................................................................... 81
11.1 -CALIBRATION TABLES ........................................................................................................................... 81

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2 - GENERAL INFORMATION
2.1 - MANUFACTURER IDENTIFICATION
Manufacturer PIETRO FIORENTINI S.P.A.
Address
Via Enrico Fermi, 8/10
36057 Arcugnano (VI) - ITALY
Tel. [phone] Fax [phone]
www.orentini.com sales@orentini.com
Tab. 2.2.
2.2 - IDENTIFICATION OF THE PRODUCT
Equipment LOW-PRESSURE GAS REGULATOR
Series GOVERNORS
Possible versions
• Standard.
• Zero.
• Ratio.
• Goval.
Tab. 2.3.
2.3 - REGULATORY FRAMEWORK
PIETRO FIORENTINI S.P.A. with registered ofces in Arcugnano (Italy) - Via E. Fermi, 8/10, declares that the equipment of
GOVERNORS described in this manual is designed, manufactured, tested and checked in compliance with the require-
ments of standards: UNI EN 88-1:2016; UNI 11655:2016, UNI EN 16129:2013 where applicable.
NOTICE!
For specic type approvals, see the appropriate section on the Manufacturer’s website: https://www.or-
entini.com
NOTICE!
The declaration of conformity in its original version is delivered together with the equipment and this man-
ual.

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2.4 - WARRANTY
PIETRO FIORENTINI S.P.A. guarantees that the equipment was manufactured using the best materials, with high quality
workmanship, and complies with the quality requirements, specications and performance set out in the order.
The warranty shall be considered null and void and PIETRO FIORENTINI S.P.A. shall not be liable for any damage and/or
malfunctions:
• due to any acts or omissions of the purchaser or end-user, or any of their carriers, employees, agents, or any third
party or entity;
• in the event that the purchaser, or a third party, makes changes to the equipment supplied by PIETRO FIORENTINI S.P.A.
without the prior written approval of the latter;
• in the event of failure by the purchaser to comply with the instructions contained in this manual, as provided by
PIETRO FIORENTINI S.P.A.
NOTICE!
The warranty conditions are specied in the commercial contract.
2.5 - ADDRESSEES, SUPPLY AND STORAGE OF THE INSTRUCTION MANUAL
The instruction manual is intended for qualied technicians responsible for operating and managing the equipment
throughout its service life.
It contains the necessary information to properly use the equipment and keep its functional and qualitative characteristics
unchanged over time. All information and warnings for safe, correct use are also provided.
The instruction manual, as well as the declaration of conformity and/or test certicate, is an integral part of the equipment
and must always accompany it whenever it is moved or resold. It is up to the user to keep this documentation intact for
reference throughout the lifespan of the equipment.
WARNING!
Removing, rewriting or editing the pages of the manual and their contents is not allowed.
Keep the instruction manual near the equipment, in an accessible place known by all qualied technicians
involved in using and running it.
PIETRO FIORENTINI S.p.A. shall not be held liable for any damage to people, animals and property caused
by failure to adhere to the warnings and operating procedures described in this instruction manual.
2.6 - LANGUAGE
The original instruction manual was drawn up in Italian.
Any translations into additional languages are to be made from the original instruction manual.
HAZARD!
The translations into other languages cannot be fully veried. If any inconsistency is found, please refer to
the original instruction manual.
If inconsistencies are found or the text does not make sense:
• stop any actions;
• immediately contact PIETRO FIORENTINI S.p.A. at the addresses specied in paragraph 2.1.
WARNING!
PIETRO FIORENTINI S.p.A. shall be held liable for the information provided in the original manual only.

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2.7 - SYMBOLS USED IN THE MANUAL
Symbol Denition
Symbol used to identify important warnings for the safety of the operator and/or equipment.
Symbol used to identify information of particular importance in the instruction manual.
The information may also concern the safety of the personnel involved in using the equipment.
Obligation to refer to the manual.
Indicates a requirement for the personnel to refer to (and understand) the instruction manual
before working with or on the equipment.
Tab. 2.4.
HAZARD!
Alerts to a hazard with a high level of risk, an imminent hazardous situation which, if not prevented, will
result in death or severe damage.
WARNING!
Alerts to a hazard with a medium level of risk, a potentially hazardous situation which, if not prevented,
may result in death or severe damage.
ATTENTION!
Alerts to a hazard with a low level of risk, a potentially hazardous situation which, if not prevented, could
result in minor or moderate damage.
NOTICE!
Alerts to specic warnings, directions or notes of particular concern, that are not related to physical injury,
as well as practices for which physical injury is not likely to occur.

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2.8 - APPLIED RATING PLATES
WARNING!
Removing nameplates and/or replacing them with other plates is strictly not allowed.
Should the plates be unintentionally damaged or removed, the customer must notify
PIETRO FIORENTINI S.p.A.
The equipment and its accessories are provided with nameplates (from Id.1 to Id.8).
The nameplates specify identication details of the equipment and its accessories to be mentioned in case of need to
PIETRO FIORENTINI S.p.A.
List of the rating plates applied:
Id. Type Image
1STANDARD CE LABEL
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
Filter: ____
Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
DN : ____
PL: - yy
Filter: ____
Classe A
Gruppo 2
Détendeur pour appareils à gaz
USF3XXXXXXXXXX
Date: xxxxx
2STANDARD LABEL (non-CE)
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
Filter: ____
Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
DN : ____
PL: - yy
Filter: ____
Classe A
Gruppo 2
Détendeur pour appareils à gaz
USF3XXXXXXXXXX
Date: xxxxx
3STANDARD CSA LABEL
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
Filter: ____ Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
DN : ____
PL: - yy
Filter: ____
Classe A
Gruppo 2
Détendeur pour appareils à gaz
USF3XXXXXXXXXX
Date: xxxxx
4GOVAL CE LABEL
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
Filter: ____ Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
DN : ____
PL: - yy
Filter: ____
Classe A
Gruppo 2
Détendeur pour appareils à gaz
USF3XXXXXXXXXX
Date: xxxxx

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Id. Type Image
5GOVAL LABEL (non-CE)
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
Filter: ____ Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
DN : ____
PL: - yy
Filter: ____
Classe A
Gruppo 2
Détendeur pour appareils à gaz
USF3XXXXXXXXXX
Date: xxxxx
6RATIO LABEL
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
Filter: ____ Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
DN : ____
PL: - yy
Filter: ____
Classe A
Gruppo 2
Détendeur pour appareils à gaz
USF3XXXXXXXXXX
Date: xxxxx
7ZERO LABEL
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
Filter: ____ Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
DN : ____
PL: - yy
Filter: ____
Classe A
Gruppo 2
Détendeur pour appareils à gaz
USF3XXXXXXXXXX
Date: xxxxx
8NF LABEL
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
FMF3XXXXXXXXXX
PL: xxxxx
Filter: ____
Filter: ____ Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
FMF3XXXXXXXXXX CONNECTION
PL: xxxxx
Filter: ____
DN : ____
PL: - yy
Filter: ____
Classe A
Gruppo 2
Détendeur pour appareils à gaz
USF3XXXXXXXXXX
Date: xxxxx
Tab. 2.5.

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2.8.1 - GLOSSARY FOR NAMEPLATES
The terms and abbreviations used on the nameplate are described below:
Description
Label terms
Standard Russia Poland Turkey Romania Spain
Kroms
Inlet pressure range bpu bpu Pe Pg
max/min -bpu
Adjusted pressure pds Pd Pa Pç - Pd
Tripping pressure
maximum pressure slam-shut device
Slam-shut
device
VIS
Slam Shut
pdso
ЛЗК Макс
Pdso Zaw.up. EBÜ -
Slam-shut
device
VIS
Slam Shut
Pdso
Pdsu
Tripping pressure
minimum pressure slam-shut device
Slam-shut
device
VIS
Slam Shut
pdsu
ЛЗК МИН
Pdsu Zaw.szybkz. EBA -
Slam-shut
device
VIS
Slam Shut
Pdso
Pdsu
Minimum nominal ow rate Q pumin -- Q min/max - Q Pumin
Maximum nominal ow rate Q pumax -Q max Q min/max - Q Pumax
Regulator model Reg. per. Type - FE Reg.
Regulator production lot P.L. ДАТА P.L. Data + bar-
code Year P.L.
Regulator serial number S.N. С.н. No. barcode - S.N.
Regulator nominal ow rate -Nom Q - - - -
Inlet connections - -DNe - DN /
Connection -
Outlet connection - -DNa - DN /
Connection -
Operating temperature range --T3 - T -
Accuracy class --- ÇT - -
Shut-off class - -- KT - -
Maximum pressure slam-shut device
Accuracy Group ---ETA - -
Minimum pressure slam-shut device
Accuracy Group --- ETÜ - -
Regulator head range - -- As - -
Calibration spring range --- - Wds -
Maximum pressure slam-shut device
spring range --- EBÜ - -
Minimum pressure slam-shut device
spring range --- EBA - -
Design pressure --- - PS -
Type of uid N.G. -- - Fluid -
Description
Label terms
Standard Russia Poland Turkey Romania Spain
Kroms
Relief calibration - -- - -
Relief
VAS
Relief Valve
Tab. 2.6.

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2.9 - GLOSSARY OF MEASUREMENT UNITS
Type of measurement Unit of measurement Description
Consumption and
Volumetric ow rate
Sm³/h Standard cubic metres per hour
Sm³ Standard cubic metres
m³/h Cubic metres per hour
m³ Cubic metres
Pressure
bar Bar
˝wc Water column inch
Pa Pascal
Temperature °C Degree centigrade
K Kelvin
Tightening torque Nm Newton metro
Other measures
V Volt
W Watt
ΩOhm
Tab. 2.7.

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2.10 - QUALIFIED PROFESSIONAL FIGURES
Qualied operators in charge of using and managing the equipment throughout its technical service life:
Professional gure Denition
Installer
Qualied operator able to:
• handle materials and equipment.
• carry out all the operations necessary to properly install the equipment;
• perform all the operations necessary to safely operate the equipment and system;
• be able to perform all the operations necessary to uninstall and subsequently dispose of
the equipment in compliance with the regulations in force in the country of installation.
Specialised technician/
Maintenance techni-
cian
Trained and authorised technician on the management and use of the equipment, who
must:
• be able to perform all operations required for the proper functioning of the equipment
and the system, and for their safety and that of any third parties present;
• perform maintenance on all parts of the equipment subject to maintenance (board and
batteries);
• access all device parts for visual inspection, checking equipment status, making adjust-
ments and calibrations;
• have proven experience in properly using the equipment similar to that described in this
manual, and be trained, informed and instructed in this regard.
Tab. 2.8.

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3 - SAFETY
3.1 - GENERAL SAFETY WARNINGS
WARNING!
The equipment described in this instruction manual is:
• a device subjected to pressure in pressurised systems;
• normally installed in systems carrying ammable gases (for example: natural gas).
WARNING!
If the gas used is a combustible gas, the installation area of the equipment is dened as a “danger zone”
as there are residual risks that potentially explosive atmospheres may be generated.
In “danger zones” and in close proximity thereto:
• there must not be any effective sources of ignition;
• smoking is not allowed.
ATTENTION!
Authorised operators must not carry out operations or services on their own initiative that do not fall with-
in their competence.
Never operate the equipment:
• while under the inuence of intoxicating substances such as alcohol;
• if you are using drugs that may slow reaction times.
NOTICE!
The employer must train and inform operators on how to behave during operations and on the equipment
to be used.
Before installation, commissioning or maintenance, operators must:
• take note of the safety regulations applicable to the place of installation they are working in;
• obtain the necessary permits to operate when required;
• wear the personal protective equipment required by the procedures described in this instruction manual:
• ensure that the required collective protective equipment and safety information are available in the area they are op-
erating in.

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3.2 - PERSONAL PROTECTIVE EQUIPMENT
NOTICE!
Personal Protective Equipment (PPE) means any equipment intended to be worn by the worker for the pur-
pose of protecting him against one or more risks likely to threaten his safety or health at work.
Depending on the type of intervention required, the appropriate PPE will be indicated (and must be used). Tab. 3.9., the
Personal Protective Equipment (PPE) and its description are listed. An obligation is associated with each symbol.
Symbol Meaning
Obligation to use safety or insulated gloves.
Indicates a requirement for the personnel to use safety or insulated gloves.
Obligation to use safety goggles.
Indicates a requirement for personnel to use protective goggles for eye protection.
Obligation to use safety shoes.
Indicates a requirement for the personnel to use accident-prevention safety shoes.
Obligation to use noise protection equipment.
Indicates a requirement for the personnel to use ear muffs or ear plugs to protect their hearing.
Obligation to wear protective clothing.
Indicates a requirement for the personnel to wear specic protective clothing.
Obligation to use a protective mask.
Indicates a requirement for the personnel to use respiratory masks in the event of a chemical
risk.
Obligation to use a protective helmet.
Indicates a requirement for the personnel to use protective helmets.
Obligation to wear high visibility vests.
Indicates a requirement for the personnel to use high visibility vests.
Tab. 3.8.
WARNING!
Each licensed operator is obliged to:
• take care of his/her own health and safety and that of other people in the workplace who are affected
by his/her actions or omissions, in accordance with the training, instructions and equipment provided
by the employer;
• appropriately use the PPE made available;
• immediately report to the employer, the manager or the person in charge of the deciencies of the
means and devices as well as any possible dangerous conditions of which they become aware.

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3.3 - OBLIGATIONS AND PROHIBITIONS
The following is a list of obligations and prohibitions to be observed for the safety of the operator:
• carefully read and understand the use, maintenance and warning manual;
• check whether the downstream equipment is suitably sized according to the performance required of the regulator in
the actual operating condition;
• before installing the equipment, strictly refer to the details specied on the nameplates and in the manual;
• avoid violent shocks and impacts that could damage the equipment and cause the uid under pressure to escape.
It is strictly forbidden to:
• operate in various capacities on the equipment without the PPE indicated in the work procedures described in this
manual;
• operate in the presence of open ames or bring open ames close to the work area;
• smoke near the equipment or while working on it;
• use the equipment with parameters other than those indicated on the nameplate;
• use the equipment with uids other than those indicated in this manual;
• use the equipment outside the operating temperature range specied in this manual;
• install or use the equipment in environments other than those specied in this manual.
3.4 - SAFETY PICTOGRAMS
The following safety pictograms may be shown on the equipment and/or packaging PIETRO FIORENTINI S.p.A.:
Symbol Denition
Symbol used to identify an ELECTRICAL HAZARD.
Symbol used to identify a GENERIC HAZARD.
Tab. 3.9.
HAZARD!
It is absolutely forbidden to remove the safety pictograms on the equipment.
The user is required to replace the safety pictograms which, following wear, removal or tampering, are
illegible.
3.5 - RISK LEVEL
Depending on the operating conditions, use and conguration required, the equipment may generate noise beyond the
limits allowed by current legislation in the country of installation.
For the value of the noise generated by the equipment and further information, contact PIETRO FIORENTINI S.p.A.
ATTENTION!
The obligation to use earmuffs or ear plugs to protect the operator's hearing remains in the event that the
noise in the installation environment of the equipment (depending on specic operating conditions) ex-
ceeds the value of 85 dBA.

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GOVERNORS
EN LOW-PRESSURE GAS REGULATOR |SAFETY | REV. A
Use, maintenance and warning manual
3.6 - RESIDUAL RISKS
NOTICE!
The equipment of STABILIZZATORI does not fall within the scope of the PED 2014/68/EU directive.
WARNING!
If there are any functional faults, do not operate.
Immediately contact PIETRO FIORENTINI S.p.A. for the necessary directions.
The equipment does not present residual risks for the operator related to its normal operation.
The risks associated with the equipment are assessed below and the principles adopted for their prevention are indicated,
according to the following classication:
a) Elimination and/or reduction of the risk.
b) Application of appropriate protective measures.
c) information to users about residual risks.