Page 1 ASX 176/FO High medium pressure gas regulator Revision 00 - Edition 02/2022 USE, MAINTENANCE AND WARNING INSTRUCTIONS...
Page 2 HIGH PRESSURE REGULATOR INTRODUCTION REV. 00 Use, maintenance and warning instructions...
Page 3: Introduction
It is of particular importance that the personnel responsible for the equipment be trained in its use, maintenance and ap- plication of the safety instructions and procedures indicated in this manual. Revision: 00 COPYRIGHT 2022 © PIETRO FIORENTINI S.P.A. HIGH PRESSURE REGULATOR INTRODUCTION REV. 00...
Page 4 HIGH PRESSURE REGULATOR INTRODUCTION REV. 00 Use, maintenance and warning instructions...
Page 5: Revision History
1.1 - REVISION HISTORY Revision Date Revision contents index 02/2022 Tab. 1.1. HIGH PRESSURE REGULATOR INTRODUCTION REV. 00 Use, maintenance and warning instructions...
Page 6: Table Of Contents
INDEX 1 - INTRODUCTION ........................3 1.1 - REVISION HISTORY ..........................5 2 - GENERAL INFORMATION ....................13 2.1 - MANUFACTURER IDENTIFICATION ......................13 2.2 - IDENTIFICATION OF THE PRODUCT ...................... 13 2.3 - REGULATORY FRAMEWORK ......................... 13 2.4 - WARRANTY ............................13 2.5 - SYMBOLS USED IN THE MANUAL ......................
Page 7 5.1.1 - PACKAGING AND FASTENERS USED FOR TRANSPORT ..............54 5.2 - PHYSICAL CHARACTERISTICS OF THE EQUIPMENT ................56 5.2.1 - ASX 176/FO (+LDB/176) ........................56 5.2.2 - ASX 176/FO + PM/176 .........................57 5.2.3 - ASX 176/FO + SSX/176 ........................58 5.3 - EQUIPMENT ANCHORING AND LIFTING METHOD................60 5.3.1 - FORKLIFT HANDLING METHOD ......................61...
Page 8 8.4 - CALIBRATION OF EQUIPMENT AND ACCESSORIES PRESENT ............85 8.5 - REGULATOR COMMISSIONING PROCEDURE ..................86 8.6 - COMMISSIONING PROCEDURE FOR THE ASX 176/FO REGULATOR WITH BUILT-IN MONITOR PM/176 ..88 8.7 - COMMISSIONING PROCEDURE FOR THE ASX 176/FO REGULATOR WITH BUILT-IN PM/176 MONITOR AND M/A ACCELERATING VALVE ......................
Page 9 9.4.2 - REPLACING ELEMENTS SUBJECT TO WEAR AND ABRASION............127 9.4.3 - REGULATOR MAINTENANCE PROCEDURE ASX 176/FO ..............128 9.4.4 - REGULATOR MAINTENANCE PROCEDURE ASX 176/FO WITH SILENCER LDB/176 ......144 9.4.5 - MAINTENANCE PROCEDURE BUILT-IN MONITOR PM/176 OR BUILT-IN SLAM-SHUT VALVE SSX/176 ..160 9.4.6 - PILOT MAINTENANCE PROCEDURE 200/A/FO AND 200/A SERIES + R14/A/FO AND R14/A PRE-RE-...
Page 10 11 - UNINSTALLATION AND DISPOSAL ................251 11.1 - GENERAL SAFETY WARNINGS ......................251 11.2 - QUALIFICATION OF THE OPERATORS IN CHARGE ................251 11.3 - UNINSTALLATION ..........................251 11.4 - INFORMATION REQUIRED IN CASE OF RE-INSTALLATION ..............251 11.5 - DISPOSAL INFORMATION ........................252 12 - RECOMMENDED SPARE PARTS ...................
Page 11 HIGH PRESSURE REGULATOR INTRODUCTION REV. 00 Use, maintenance and warning instructions...
Page 12 HIGH PRESSURE REGULATOR INTRODUCTION REV. 00 Use, maintenance and warning instructions...
Page 13: General Information
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, specifications 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: •...
Page 14: Symbols Used In The Manual
2.5 - SYMBOLS USED IN THE MANUAL Symbol Definition 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 consult the instruction manual/booklet.
Page 15: Addressees, Supply And Storage Of The Instruction Manual
Keep the instruction manual near the equipment, in an accessible place known by all qualified 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.
Page 16: Nameplates Applied
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).
Page 17 Type Image NAMEPLATE MONITOR NAMEPLATE SLAM-SHUT VALVE NAMEPLATE PRESSURE SWITCH NAMEPLATE ACCELERATING VALVE Tab. 2.5. HIGH PRESSURE REGULATOR GENERAL INFORMATION REV. 00 Use, maintenance and warning instructions...
Page 18: Glossary For Nameplates
2.8.1 - GLOSSARY FOR NAMEPLATES The terms and abbreviations used on the nameplates are described below: Term Description Accuracy class. Slam-shut valve accuracy class due to pressure increase. AG max “OPSO” (Overpressure shut-off). Slam-shut valve accuracy class due to pressure decrease. AG min ”UPSO”(Underpressure shut off).
Page 19 Term Description Full setpoint range with regard to tripping caused by decreased pressure in the pressure switch incorporated in the slam-shut valve. This range can be obtained by adjusting and/or replacing the components (for example, spring or sensitive element). Full setpoint range with regard to tripping caused by decreased pressure in the pressure switch Wdsu built in the slam-shut valve.
Page 20: Glossary Of Measurement Units
2.9 - GLOSSARY OF MEASUREMENT UNITS Type of measurement Unit of measurement Description Stm³/h Standard cubic metres per hour Volumetric flow rate Scfh Standard cubic feet per hour Pounds per square inch Pressure “wc inch of water column Pascal °C Degree centigrade Temperature °F...
Page 21: Qualified Professional Figures
2.10 - QUALIFIED PROFESSIONAL FIGURES Qualified operators in charge of using and managing the equipment throughout its technical service life: Professional figure Definition Qualified technician able to: • perform preventive/corrective maintenance operations on all mechanical parts of the Mechanical equipment subject to maintenance or repair; maintenance techni- •...
Page 22 HIGH PRESSURE REGULATOR GENERAL INFORMATION REV. 00 Use, maintenance and warning instructions...
Page 23: Safety
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 flammable gases (for example: natural gas). WARNING! If the gas used is a combustible gas, the installation area of the equipment is defined as a “danger zone” as there are residual risks that potentially explosive atmospheres may be generated.
Page 24: Personal Protective Equipment
3.2 - PERSONAL PROTECTIVE EQUIPMENT Table 3.9 shows the personal protective equipment (PPE) and its description. An obligation is associated with each symbol. Personal protective equipment means any equipment intended to be worn by the worker in order to protect them against one or several risks that are likely to threaten their safety or health during work.
Page 25: Residual Risks
3.3 - RESIDUAL RISKS In accordance with the requirements of PED 2014/68/EU, point 1.2 of Annex I, below is an assessment of the risks as- sociated with the equipment and an indication of the principles adopted for their prevention, according to the following classification: a) Elimination and/or reduction of the risk.
Page 26 3.3.1 - TABLE SHOWING RESIDUAL RISKS DUE TO PRESSURE Effect and Risk and Hazard Event and Cause Solution and Prevention Consequence Pressurised gas a. Handling and installation with appropri- leakage. • Violent impact; • Deformation; ate devices to avoid localised stress. Projection of me- •...
Page 27 Effect and Risk and Hazard Event and Cause Solution and Prevention Consequence Pressurised gas • Deformation; leakage. a. With the exclusion of what is set out in • Cracking and slot Projection of • External loads bear- the project, the user must verify that no formation;...
Page 28: Table Of Residual Risks For Potentially Explosive Atmospheres
3.3.2 - TABLE OF RESIDUAL RISKS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES Table 3.11 shows the conditions that can lead to the generation of a potentially explosive atmosphere respectively for: • of pressure regulator ASX 176/FO; • of the PM/176 monitor; •...
Page 29 Atmosphere Management measures in- Operating potentially Regulatory references cluded in the instructions for conditions explosive use and warning This event must be considered a rare malfunction. Breakage of the All atmospheric pressure chambers The instructions for use indicate control head dia- delimited on at least one side by a the need to meet the requirements phragm...
Page 30: Obligations And Prohibitions
3.4 - OBLIGATIONS AND PROHIBITIONS The following is a list of obligations and prohibitions to be observed for the safety of the operator. It is mandatory to: • carefully read and understand the instructions for use and warning; • The downstream equipment must be suitably sized according to the equipment performance required in the actual operating condition;...
Page 31: Safety Pictograms
Depending on the operating conditions, use and configuration 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!
Page 32 HIGH PRESSURE REGULATOR SAFETY REV. 00 Use, maintenance and warning instructions...
Page 33: Description And Operation
4 - DESCRIPTION AND OPERATION 4.1 - GENERAL DESCRIPTION The equipment ASX 176/FO is a piloted pressure regulator for medium and high pressure which reduces the inlet gas pressure, keeping the downstream value stable even when the following varies: •...
Page 34: Regulator Reaction Modes
4.1.1 - REGULATOR REACTION MODES The ASX 176/FO equipment is a regulator piloted with a “fail open” reaction (on-opening reaction), that is, it opens in the event of: • breakage of main diaphragm: • breakage of the pilot diaphragm; •...
Page 35 Lacking pressure, the regulator plug (5) is held in the open position by the springs (10). The upstream pressure (Pu), al- though variable, does not change this position since the regulator plug (5) is fully balanced. The position of the regulator plug (5) is controlled by the main diaphragm (7) on which the following forces are exerted: •...
Page 36: Intended Use
If no written approval is provided, use shall be considered improper. In the event of “improper use”, PIETRO FIORENTINI S.p.A. shall not be held liable for any damage caused to people or property, and any type of warranty on the equipment shall be deemed void.
Page 37: Technical Features/Performance
4.4 - TECHNICAL FEATURES/PERFORMANCE The ASX 176/FO equipment is a medium and high pressure axial type of regulator. The regulation system is balanced and guarantees a stable outlet pressure even when the inlet pressure varies. The main specifications for this regulator are:...
Page 38: Possible Configurations
4.5 - POSSIBLE CONFIGURATIONS The ASX 176/FO equipment can have different configurations through the installation of the following accessories: • Built-in silencer LDB/176; • PM 176 built-in monitor; • Built-in slam-shut valve SSX/176. The possible configurations are described in Table 4.18:...
Page 39: Built-In Silencer
4.5.1 - BUILT-IN SILENCER The LDB/176 silencer (1) is incorporated in the regulator (2). The LDB/176 silencer (1) reduces the noise generated by the equipment during the lamination process. Noise is absorbed precisely where it is generated, which prevents it from propagating. pstream pressUre ownstream pressUre oaDing pressUre...
Page 40: Monitor
LoaDing pressUre Fig. 4.4. ASX 176/FO with built-in monitor PM/176 4.5.2.1 - BUILT-IN MONITOR The PM/176 monitor (1) is mounted in series directly on the service regulator housing (2). The PM/176 (1) monitor is nor- mally in stand-by position, fully open, and in the event of a fault in the main regulator, it comes into operation, ensuring correct pressure regulation.
Page 41 BUILT-IN MONITOR OPERATION NOTICE! To check the position of the plug (3), look at the position of the stroke indicator rod (8) referring to the glass cover (9): • fully open 100%; • closed 0%. In depressurised conditions, the plug (3) is kept in a shut-off position by the spring (4) and rests on the reinforced gasket (5). The upstream pressure (Pu), although variable, does not change this position as the plug (3) is fully balanced.
Page 42 OPERATION OF THE BUILT-IN MONITOR IN STAND-BY CONDITIONS: The PM/176 built-in monitor (1) is normally open during standard operation as pilot (4) calibration is higher than that of the main regulator’s (2) pilot. The passage of the pre-regulator pressure (Pep), generated by the R14/A pre-regulator (5) through the completely open pilot (4), also keeps the PM/176 built-in monitor (1) fully open.
Page 43 HIGH PRESSURE REGULATOR DESCRIPTION AND OPERATION REV. 00 Use, maintenance and warning instructions...
Page 44 BUILT-IN MONITOR OPERATION IN THE EVENT OF FAILURE OF THE MAIN REGULATOR: pstream pressUre ownstream pressUre otorisation pressUre iLot pressUre regULator pressUre onitor LoaDing pressUre Fig. 4.7. Built-in monitor operation in the event of failure of the main regulator HIGH PRESSURE REGULATOR DESCRIPTION AND OPERATION REV.
Page 45 In the event of failure of the main regulator (2), the PM/176 monitor (1) will be tripped until the pre-set downstream pressure has been reached. Operating conditions Operating consequences Concluding outcome Opening of the plug (7) of the Decrease in downstream Imbalance between the pressure force in the PM/176 monitor (1) until the pressure (Pd) due to:...
Page 46: M/A Accelerating Valve
4.5.2.2 - M/A ACCELERATING VALVE NOTICE! For the monitor to be used as a safety accessory according to “PED” Directive 2014/68/EU, installing the M/A accelerating valve is recommended. In the event of a malfunction of the main regulator (2), the M/A accelerating valve (3) is installed to speed up tripping of the built-in PM/176 monitor (1).
Page 47: Slam-Shut Valve
4.5.3 - SLAM-SHUT VALVE The slam-shut valve is a safety device is used to shut off the gas flow if the pressure value at the control point exceeds the calibration value of the valve itself. The slam-shut valve is incorporated in the main regulator of the equipment and consists of: •...
Page 48 The SSX/176 built-in slam-shut valve consists of: Pos. Description Slam-shut valve plug LINE OFF 2.0 device Tab. 4.21. The LINE OFF 2.0 device (2) consists of: Pos. Description HP2/2: filtering device of the gas supplying the control circuit; it also acts as a bypass necessary for resetting the built-in slam-shut valve SSX/176.
Page 49 Fig. 4.9. ASX 176/FO with built-in slam-shut valve SSX/176 OPERATION: At no pressure, the valve plug (1) is kept in the shut-off position by the spring (10) and rests on the reinforced gasket (11).
Page 50: Slam-Shut Valve Pressure Switches
4.5.4 - SLAM-SHUT VALVE PRESSURE SWITCHES The pressure switch is a control device consisting of (see Fig. 4.10): Pos. Description Control element. NOTICE! The control element can be a diaphragm or a piston. Stem. Adjustment feeler gauges Spring for maximum pressure tripping. Spring for minimum pressure tripping.
Page 51 Table 4.24 lists the models of possible pressure switches for this slam-shut valve: Model pressure Max [bar] Min [bar] switch 102M 0.2 - 5.5 0.05 - 2.8 102MH 0.2 - 5.5 2.8 - 5.5 103M 2 - 22 0.2 - 8 103MH 2 - 22 8 - 19...
Page 52 HIGH PRESSURE REGULATOR DESCRIPTION AND OPERATION REV. 00 Use, maintenance and warning instructions...
Page 53: Transport And Handling
5 - TRANSPORT AND HANDLING 5.1 - SPECIFIC WARNINGS FOR TRANSPORT AND HANDLING NOTICE! Transport and handling must be carried out by personnel: • qualified (specially trained); • who are familiar with accident prevention and workplace safety regulations; • authorised to use lifting equipment; •...
Page 54: Packaging And Fasteners Used For Transport
PIETRO FIORENTINI S.p.A.. NOTICE! PIETRO FIORENTINI S.p.A. shall not be liable for any damage to people or property caused by accidents due to failure to comply with the instructions provided in this manual. Table 5.26 shows the types of packaging used: Ref.
Page 55 HIGH PRESSURE REGULATOR TRANSPORT AND HANDLING REV. 00 Use, maintenance and warning instructions...
Page 56: Physical Characteristics Of The Equipment
5.2 - PHYSICAL CHARACTERISTICS OF THE EQUIPMENT 5.2.1 - ASX 176/FO (+LDB/176) Fig. 5.11. Physical characteristics ASX 176/FO (+LDB/176) ASX 176/FO overall dimensions Nominal diameter [mm] Size [inches] 1” 2” 3” 4” 6” S - Class 300 S - Class 600 Ø...
Page 57: Asx 176/Fo + Pm/176
5.2.2 - ASX 176/FO + PM/176 Fig. 5.12. ASX 176/FO + PM/176 physical characteristics ASX 176/FO + PM/176 overall dimensions Nominal diameter [mm] Size [inches] 1” 2” 3” 4” 6” S - Class 300 S - Class 600 Ø Connecting pneumatic eØ...
Page 58: Asx 176/Fo + Ssx/176
5.2.3 - ASX 176/FO + SSX/176 Fig. 5.13. Physical characteristics ASX 176/FO + SSX/176 Overall dimensions ASX 176/FO + SSX/176 Nominal diameter [mm] Size [inches] 1” 2” 3” 4” 6” S - Class 300 S - Class 600 Ø Connecting pneumatic eØ...
Page 59 HIGH PRESSURE REGULATOR TRANSPORT AND HANDLING REV. 00 Use, maintenance and warning instructions...
Page 60: Equipment Anchoring And Lifting Method
5.3 - EQUIPMENT ANCHORING AND LIFTING METHOD HAZARD! Before moving the equipment, make sure that the capacity of the lifting equipment is suitable for the load. WARNING! Unloading, transport and handling activities must be carried out by operators qualified and specially trained: •...
Page 61: Forklift Handling Method
5.3.1 - FORKLIFT HANDLING METHOD HAZARD! It is forbidden to: • Do not transit under suspended loads; • Do not move the load over the personnel operating in the site/plant area. WARNING! The following is not allowed on forklifts: • carrying passengers;...
Page 62 Step Action Image Sollevare lentamente il carico di qualche decina di centimetri e veri carne la stabilità facendo attenzio- Inclinare il montante all’indietro (verso il posto guida) per avvantaggiare il momento ribaltante e Adeguare la velocità d ne che il baricentro del carico sia posizionato al centro delle forche di sollevamento. garantire una maggiore stabilità...
Page 63: Crane Handling Method
5.3.2 - CRANE HANDLING METHOD WARNING! It is mandatory to use chains, ropes and eyebolts CE marked or marked with conformity marks in accord- ance with the regulations in force in the place of installation. Do not use chains connected to each other by bolts.
Page 64: Packaging Removal
• do not install the equipment; • contact PIETRO FIORENTINI S.p.A. and specify the details provided on the equipment nameplate. 5.4.1 - PACKAGING DISPOSAL NOTICE! Sort the various materials making up the packaging and dispose of them in compliance with the regula- tions in force in the country of installation.
Page 65: Storage And Environmental Conditions
To replace the rubber parts of the equipment, please refer to chapter 9 “Maintenance and functional checks”. NOTICE! PIETRO FIORENTINI S.p.A. recommends checking the condition of rubber parts in case of downtime or storage longer than 3 years. HIGH PRESSURE REGULATOR TRANSPORT AND HANDLING REV.
Page 66 HIGH PRESSURE REGULATOR TRANSPORT AND HANDLING REV. 00 Use, maintenance and warning instructions...
Page 67: Installation
6 - INSTALLATION 6.1 - INSTALLATION PRE-REQUISITES 6.1.1 - ALLOWED ENVIRONMENTAL CONDITIONS WARNING! To safely use the equipment, in full respect of the allowed environmental conditions, follow the data shown on the regulator plate and on any accessories (refer to paragraph 2.8 “Nameplates applied”). The installation site must be suitable for the safe use of the equipment.
Page 68: Checks Before Installation
6.1.2 - CHECKS BEFORE INSTALLATION The equipment does not require any further upstream safety device for protection against any overpressure with respect to its PS admissible pressure when, for the upstream reduction station, the maximum incidental downstream pressure MIPd ≤ 1.1 PS MIPd = Maximum incidental downstream pressure value (for further information, see UNI EN 12186:2014).
Page 69: Specific Safety Instructions For The Installation Step
6.2 - SPECIFIC SAFETY INSTRUCTIONS FOR THE INSTALLATION STEP WARNING! Before proceeding with installation, make sure that the upstream and downstream valves installed on the line are shut off. WARNING! Installation may also take place in areas where there is a risk of explosion, which implies that all necessary prevention and protection measures have to be taken.
Page 70: General Information On Connections
6.3 - GENERAL INFORMATION ON CONNECTIONS The equipment must be installed in-line with an arrow on the body pointing to the gas flow direction. The online installation must include: Pos. Description 1 shut-off valve upstream of the equipment. 2 vent valves one upstream and one downstream of the equipment. 2 pressure gauges one upstream and one downstream of the equipment.
Page 71: Regulator Installation Positions
NOTICE! When used in gas pressure reduction stations, the device must be installed at least according to the re- quirements of standards UNI EN 12186:2014 or UNI EN 12279:2007. Equipment vents must be ducted in accordance with UNI EN 12186:2014 or UNI EN 12279:2007 or the standards in force at the place of installation of the equipment.
Page 72: Equipment Installation Procedures
6.5 - EQUIPMENT INSTALLATION PROCEDURES 6.5.1 - IN-LINE EQUIPMENT INSTALLATION PROCEDURE Fig. 6.18. Installation ASX 176/FO without spacer Step Action Place the equipment in the section of the line designated for it. Place the gaskets between the line flanges and the regulator flanges.
Page 73: In-Line Equipment Installation Procedure With Spacer
The equipment can be installed by inserting a spacer. This configuration is used to service the reinforced gasket without removing the regulator from the line. Fig. 6.19. Installation ASX 176/FO with spacer Step Action Place the equipment in the section of the line designated for it.
Page 74 Table 6.42 lists the dimensions of the mounting spacer: Tab. 6.42. Fig. 6.20. Mounting spacer HIGH PRESSURE REGULATOR INSTALLATION REV. 00 Use, maintenance and warning instructions...
Page 75: Connection Of The Sensing Lines To The Downstream Piping
6.5.3 - CONNECTION OF THE SENSING LINES TO THE DOWNSTREAM PIPING Fig. 6.21. Connection of sensing lines to the downstream piping For proper adjustment, it is essential that: • the downstream shut-off valve is placed at a distance of at least 6 times the nominal diameter of the pipe downstream of the regulator;...
Page 76 To prevent the pneumatic connections of the sensing lines from collecting impurities and condensation, it is necessary that: • the pneumatic connection couplings are always welded on the upper part or at maximum 90 degrees on the axis of the piping (refer to fig. 6.22); •...
Page 77: Post-Installation And Pre-Commissioning Checks
If there is a multiple sensing line (see fig. 6.23), provide equipment connections as shown below: • 1 and 2 to the discharge outlet of the regulator control head and PM/176 monitor if any; • 3 and 4 to the pilot sensing lines; •...
Page 78 HIGH PRESSURE REGULATOR INSTALLATION REV. 00 Use, maintenance and warning instructions...
Page 79: Commissioning/Maintenance Equipment
7 - COMMISSIONING/MAINTENANCE EQUIPMENT 7.1 - LIST OF EQUIPMENT Use of commissioning/maintenance equipment • Mechanical maintenance technician; • Electrical maintenance technician; Operator qualification • Installer; • User’s technician. WARNING! The PPE listed in this table is related to the risk associated with the equipment. PPE required For the PPE required to protect against risks associated with the workplace, installation or operating conditions, please refer to:...
Page 80: Equipment Needed For The Different Configurations
Ref. Equipment type Image O-ring extraction tool Fiorentini special tool Tab. 7.44. 7.2 - EQUIPMENT NEEDED FOR THE DIFFERENT CONFIGURATIONS Each table is distinguished by: Term Description K./Wr. Key, with reference to the equipment indicated in tab. 7.44. Code Code, referring to the equipment. Indicates the Nominal Diameter of the reference configuration.
Page 81 ASX 176/FO (+ LDB/176) Equipment Ref. Type 1” 2” 3” 4” 6” 13-17-19- 13-17-19- 13-17-19- 13-17-19- 13-17-19- K./Wr. 24-30 24-30 24-27-30 24-30-32 24-30-41 K./Wr. K./Wr. K./Wr. 5-6-7 5-6-7 5-6-7 5-6-7 5-6-7 Code 7999099 Tab. 7.46. ASX 176/FO + PM/176 Equipment Ref.
Page 82 HIGH PRESSURE REGULATOR REV. 00 COMMISSIONING AND MAINTENANCE EQUIPMENT Use, maintenance and warning instructions...
Page 83: Commissioning
8 - COMMISSIONING 8.1 - GENERAL WARNINGS 8.1.1 - SAFETY REQUIREMENTS FOR COMMISSIONING HAZARD! During commissioning the risks associated with any discharges to the atmosphere of flammable or nox- ious gases must be evaluated. HAZARD! In case of installation on distribution networks for natural gas, consider the risk associated with explosive mixtures (gas/air) being formed inside the piping, if the line is not subjected to inerting.
Page 84: Preliminary Procedures For Commissioning
8.2 - PRELIMINARY PROCEDURES FOR COMMISSIONING HAZARD! Before commissioning the equipment, it must be ensured that any source of explosion has been eliminat- ed if there is such a danger. WARNING! Before commissioning, you need to make sure that the characteristics of the equipment are suitable for the conditions of use.
Page 85: Proper Commissioning Check
8.3 - PROPER COMMISSIONING CHECK Completely sprinkle the equipment with a foaming solution (or equivalent control system) in order to check the tightness of the external surfaces of the regulator and the connections made during the installation. 8.4 - CALIBRATION OF EQUIPMENT AND ACCESSORIES PRESENT NOTICE! To properly calibrate the equipment and accessories present, refer to the accuracy class indicated on the nameplates (see section 2.8).
Page 86: Regulator Commissioning Procedure
In the application consisting of two pressure adjusting lines, it is advisable to commission one line at a time, starting with the line with the lowest set point. The set point value is mentioned on the test certificate enclosed with each piece of equipment. Fig. 8.24. Commissioning the regulator ASX 176/FO HIGH PRESSURE REGULATOR COMMISSIONING REV. 00...
Page 87 Step Action Partially open the air vent valve (6). Completely unscrew the fixing nut and adjusting screw (fig. 8.30) of the pilot (3) to relieve the spring. Set the 3-way valve (7) to the by-pass position. Check that the regulator is fully shut off (0%) by checking the position of the stroke indicator rod (fig. 4.5). NOTICE! Check the pressure referring to the pressure gauge (5) located upstream.
Page 88: Commissioning Procedure For The Asx 176/Fo Regulator With Built-In Monitor Pm/176
8.6 - COMMISSIONING PROCEDURE FOR THE ASX 176/FO REGULATOR WITH BUILT- IN MONITOR PM/176 Fig. 8.25. Procedure for commissioning the ASX 176/FO regulator with the PM/176 built-in monitor HIGH PRESSURE REGULATOR COMMISSIONING REV. 00 Use, maintenance and warning instructions...
Page 89 Completely compress the pilot spring (3) by turning the adjusting screw (fig. 8.30) clockwise. Check that the PM/176 monitor (8) is in fully shut-off position (0%) and the ASX 176/FO regulator (1) is in fully open position (100%) by checking the position of the stroke indicator rods (fig. 4.5).
Page 90: Commissioning Procedure For The Asx 176/Fo Regulator With Built-In Pm/176 Monitor And M/A Accelerating Valve
Completely compress the pilot spring (3) by turning the adjusting screw (fig. 8.30) clockwise. Check that the PM/176 monitor (8) is in fully shut-off position (0%) and the ASX 176/FO regulator (1) is in fully open position (100%) by checking the position of the stroke indicator rods (fig. 4.5).
Page 91 Step Action Turn the adjusting screw (fig. 8.30) on the monitor pilot (10) anti-clockwise to decrease the downstream pres- sure value to the selected monitor operating value. NOTICE! • Ensuring that the M/A accelerating valve (11) has interrupted the gas discharge; •...
Page 92: Commissioning Procedure For The Asx 176/Fo Regulator With Built-In Ssx/176 Slam- Shut Valve
8.8 - COMMISSIONING PROCEDURE FOR THE ASX 176/FO REGULATOR WITH BUILT- IN SSX/176 SLAM-SHUT VALVE SSX/176 8.8.1 - CHECKING THE SLAM-SHUT VALVE FOR PROPER SEALING DURING SHUT- Fig. 8.27. SSX/176 slam-shut valve sealing during sealing HIGH PRESSURE REGULATOR COMMISSIONING REV. 00...
Page 93 Step Action Check that the built-in slam-shut valve (8) is in the shut-off position (0%) by checking the position of the stroke indicator rod. Completely unscrew the fixing nut (fig. 8.30) of the pilot screw (3). Completely relieve the pilot spring (3) by turning the adjusting screw (fig. 8.30) anti-clockwise. Open the drain cock (6) and drain the downstream section completely.
Page 94: Line Off 2.0 Commissioning And Calibration Procedure For Ssx/176 Built-In Slam-Shut Valve
8.8.2 - LINE OFF 2.0 COMMISSIONING AND CALIBRATION PROCEDURE FOR SSX/176 BUILT- IN SLAM-SHUT VALVE Fig. 8.28. LINE OFF 2.0 commissioning and calibration for the SSX/176 built-in slam-shut valve HIGH PRESSURE REGULATOR COMMISSIONING REV. 00 Use, maintenance and warning instructions...
Page 95 Step Action Press and hold the button of the bypass valve HP2/2 (7.1) to: • bring the upstream pressure to the power supply unit of the LINE-OFF 2.0 device; • balance the pressure of the HB/97 built-in slam-shut valve plug. Release the button of bypass valve HP2/2 (7.1) after checking that the upstream and downstream pressure of the slam-shut valve is balanced.
Page 96: Pressure Switch Calibration Procedure For Line Off 2.0 Models 102M/102Mh To 105M/105Mh
8.8.3 - PRESSURE SWITCH CALIBRATION PROCEDURE FOR LINE OFF 2.0 MODELS 102M/102MH TO 105M/105MH Fig. 8.29. Pressure switches calibration Models 102M/102MH - 105M/105MH SPRING CALIBRATION FOR MAXIMUM PRESSURE TRIP Step Action By adjusting the main regulator, increase the downstream pressure up to the tripping value of the slam-shut valve, to check for proper calibration.
Page 97 SPRING CALIBRATION FOR MINIMUM PRESSURE TRIP (IF ANY) Step Action Open the drain cock (fig. 8.24, ref. 6) to the atmosphere and keep it open for the next steps. Decrease the downstream pressure to the minimum tripping pressure of the slam-shut device by adjusting the pilot.
Page 98: Calibration Of The Pressure Switch For Line Off 2.0
8.9 - CALIBRATION OF THE PRESSURE SWITCH FOR LINE OFF 2.0 NOTICE! For the pressure switch calibration procedure, refer to paragraph 8.8.3 “Calibration procedure for pressure switches 102M/102MH - 105M/105MH”. 8.10 - DEVICE CALIBRATION 8.10.1 - PILOT CALIBRATION 200/A SERIES Fig.
Page 99: Calibration Of Pressure Switches Models 102M/102Mh To 105M/105Mh
8.10.2 - CALIBRATION OF PRESSURE SWITCHES MODELS 102M/102MH TO 105M/105MH Fig. 8.31. Pressure switches models 102M/102MH - 105M/105MH Adjust the maximum pressure (11) ring nut (13): • anti-clockwise to decrease the slim-shut device tripping pressure; • clockwise to increase the slim-shut device tripping pressure. Turn the minimum pressure (17) ring nut (15): •...
Page 100 HIGH PRESSURE REGULATOR COMMISSIONING REV. 00 Use, maintenance and warning instructions...
Page 101: Maintenance And Functional Checks
WARNING! In case of doubt, do not perform any work. Contact PIETRO FIORENTINI S.p.A. for the necessary clarifica- tions. Managing and/or using the equipment includes operations that are necessary as a result of normal use such as: •...
Page 102 Before beginning disassembly of the equipment, make sure that: • the spare parts and parts used in replacements have adequate requirements to ensure the original performance of the equipment. Use original, compliant spare parts; • the operator has the necessary equipment (see chapter 7 “Equipment for commissioning/maintenance”). NOTICE! The recommended spare parts are unambiguously identified with tags indicating: •...
Page 103: Periodically Checking And Inspecting The Equipment For Proper Operation
9.2 - PERIODICALLY CHECKING AND INSPECTING THE EQUIPMENT FOR PROPER OPERATION Periodic checks and inspections Operator qualification Mechanical maintenance technician WARNING! The PPE listed in this table is related to the risk associated with the equipment. PPE required For the PPE required to protect against risks associated with the workplace, installation or operating conditions, please refer to: •...
Page 104: Routine Maintenance
9.3 - ROUTINE MAINTENANCE 9.3.1 - GENERAL SAFETY WARNINGS HAZARD! • Put the equipment in a safe condition (close the downstream shut-off valve and then the upstream one, and drain the line completely); • Ensure that the pressure upstream and downstream of the equipment is “0”. NOTICE! Before installing new sealing elements (o-rings, diaphragm, etc.), they must be checked for integrity.
Page 105: Replacement Frequency For Components Subject To Wear
9.3.2 - REPLACEMENT FREQUENCY FOR COMPONENTS SUBJECT TO WEAR NOTICE! The following provisions shall apply to equipment components only. The non-metallic parts of the equipment concerned are divided into the following two categories: Preventive maintenance work Parts subject to wear and/or abrasion, where: •...
Page 106 Minimum Category Part description Evaluation criterion replacement frequency Non-metallic parts with a static sealing If there are Various equipment function only proven leaks Shut-off valves Yearly Lubricating parts Other equipment Yearly Filter elements Filters needed Tab. 9.62. HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV.
Page 107: Routine Maintenance Procedures
9.4 - ROUTINE MAINTENANCE PROCEDURES Routine maintenance Operator qualification Mechanical maintenance technician WARNING! The PPE listed in this table is related to the risk associated with the equipment. PPE required For the PPE required to protect against risks associated with the workplace, installation or operating conditions, please refer to: •...
Page 108: Tightening Torques Asx 176/Fo
9.4.1 - TIGHTENING TORQUES ASX 176/FO 34.1 Fig. 9.32. Tightening torques ASX 176/FO HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 109 ASX 176/FO DN 1” Pos. Description Torque (Nm) Torque (ft - lb) Screw M12X30 UNI 5931 Screw M6X12 UNI 5931 Screw M16X100 UNI 5739 34.1 Screw M16X100 UNI 5739 Screw M6X10 UNI 5931 Screw M16X110 UNI 5739 Tab. 9.64. ASX 176/FO DN 2”...
Page 110 34.1 Tightening torques ASX 176/FO HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 111 ASX 176/FO DN 6” Pos. Description Torque (Nm) Torque (ft - lb) Screw M18X50 UNI 5931 Screw M18X60 UNI 5931 Screw M6X14 UNI 5931 Screw M27X200 UNI 5739 34.1 Screw M27X200 UNI 5739 Screw M6X16 UNI 5931 Pilot screw ASX 176 Tab.
Page 112 9.4.1.1 - TIGHTENING TORQUES ASX 176/FO + SILENCER LDB/176 34.1 Fig. 9.33. Tightening torques ASX 176/FO + Silencer LDB/176 HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 113 ASX 176/FO DN 1” + LDB/176 Pos. Description Torque (Nm) Torque (ft - lb) Screw M12X30 UNI 5931 Screw M6X12 UNI 5931 Screw M16X100 UNI 5739 34.1 Screw M16X100 UNI 5739 Screw M6X10 UNI 5931 Screw M16X110 UNI 5739 Tab. 9.69.
Page 114 34.1 Tightening torques ASX 176/FO + Silencer LDB/176 HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 115 ASX 176/FO DN 6” + LDB/176 Pos. Description Torque (Nm) Torque (ft - lb) Screw M18X50 UNI 5931 Screw M18X60 UNI 5931 Screw M6X14 UNI 5931 Screw M27X200 UNI 5739 34.1 Screw M27X200 UNI 5739 Screw M6X16 UNI 5931 Pilot screw ASX 176 Tab.
Page 116 9.4.1.2 - BUILT-IN MONITOR TORQUES PM/176 OR SLAM-SHUT VALVE SSX/176 34.1 Fig. 9.34. Built-in monitor torque PM/176 or slam-shut valve SSX/176 HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 117 PM/176 (or SSX/176) DN 1” Pos. Description Torque (Nm) Torque (ft - lb) Screw M12X30 UNI 5931 Screw M6X12 UNI 5931 Screw M16X100 UNI 5739 34.1 Screw M16X100 UNI 5739 Screw M6X10 UNI 5931 Screw M16X110 UNI 5739 Tab. 9.74. PM/176 (or SSX/176) DN 2”...
Page 118 34.1 Built-in monitor torque PM/176 or slam-shut valve SSX/176 HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 119 PM/176 (or SSX/176) DN 6” Pos. Description Torque (Nm) Torque (ft - lb) Screw M18X50 UNI 5931 Screw M18X60 UNI 5931 Screw M6X14 UNI 5931 Screw M27X200 UNI 5739 34.1 Screw M27X200 UNI 5739 Screw M6X16 UNI 5931 Pilot screw ASX 176 Tab.
Page 120 9.4.1.3 - PILOT TORQUES 200/A AND 200/A/FO SERIES 204/A/FO - 204/A 205/A/FO - 205/A 207/A/FO- 207/A Fig. 9.35. Tightening torques 200/A and 200/A/FO series pilots PILOTS 204/A/FO-204/A and 205/A/FO-205/A Pos. Description Torque (Nm) Torque (ft - lb) Nut M16X1 Screw M8X30 UNI 5931 Nut M16X1.5 Nut M18X1.5 Tab.
Page 121 9.4.1.4 - R14/A/FO AND R14/A PRE-REGULATOR TORQUES R14/A R14/A/FO Fig. 9.36. R14/A/FO and R14/A pre-regulator tightening torques R14/A/FO and R14/A PRE-REGULATOR Pos. Description Torque (Nm) Torque (ft - lb) Nut M8X30 UNI 5931 Nut M8 UNI 5588 Nut M18X1 Tab. 9.81. HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV.
Page 122 9.4.1.5 - TIGHTENING TORQUES FOR PRESSURE SWITCHES MODELS 102M/102MH - 105M/105MH 102M/102MH 104M/104MH 103M/103MH 105M/105MH Fig. 9.37. Tightening torques for pressure switches models 102M/102MH - 105M/105MH HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 123 Mod. 102M/102MH Pos. Description Torque (Nm) Torque (ft - lb) Screw M4X10 UNI 5931 Screw M5X10 UNI 5933 Screw M6X16 UNI 5931 Nut M6 UNI 5588 Screw M5X15 UNI 8112 Screw M6X25 UNI 5931 Nut M20X1 Screw M5X16 UNI 5931 Tab.
Page 124 9.4.1.6 - TIGHTENING TORQUES FOR HP2/2 BYPASS DEVICE Fig. 9.38. Tightening torques for HP2/2 bypass device HP2/2 Pos. Description Torque (Nm) Torque (ft - lb) Screw M8X20 UNI 5931 Screw M8X45 UNI 5931 Tab. 9.85. HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV.
Page 125 9.4.1.7 - TIGHTENING TORQUES FOR R44/SS REGULATOR 24.1 Fig. 9.39. Tightening torques for R44/SS regulator R44/SS Pos. Description Torque (Nm) Torque (ft - lb) Nut M16X1 Screw M8X110 UNI 5931 24.1 Screw M8X70 UNI 5931 Nut M16X1.5 Nut M18X1.5 Tab. 9.86. HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV.
Page 126 9.4.1.8 - TIGHTENING TORQUES FOR LAMINATION VALVE AR100 Fig. 9.40. Tightening torques for lamination valve AR100 LAMINATION VALVE AR100 Pos. Description Torque (Nm) Torque (ft - lb) Cap M20X1.5 Screw M8 Tab. 9.87. HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV.
Page 127: Replacing Elements Subject To Wear And Abrasion
9.4.2 - REPLACING ELEMENTS SUBJECT TO WEAR AND ABRASION 9.4.2.1 - INITIAL OPERATIONS ATTENTION! Before carrying out any work, it is important to ensure that the line on which the regulator is installed has been shut off upstream and downstream, and discharged. ATTENTION! During assembly, make sure to tighten the screws as per the tables (tightening torques), according to the size for which maintenance is being carried out.
Page 128: Regulator Maintenance Procedure Asx 176/Fo
9.4.3 - REGULATOR MAINTENANCE PROCEDURE ASX 176/FO 9.4.3.1 - REGULATOR ASX 176/FO DN 1" 34.1 Fig. 9.42. Regulator ASX 176/FO DN 1" HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 129 Step Action WARNING! If fitted, remove the spacer. Place the regulator with the upstream mouthpiece (1) of the main regulator on a shockproof surface. Unscrew and remove the stroke indicator cap (13) together with the indicator slide (14) from the indicator rod guide (12).
Page 130 34.1 Regulator ASX 176/FO DN 1" HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 131 Step Action Insert and fix the screws (36) according to the following tightening torque: • DN 1”: tab. 9.65. NOTICE! Tighten the screws according to the cross diagram in paragraph 9.4.2.2. Remove and replace the O-ring (48) from the upstream mouthpiece (1), lubricating it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
Page 132 34.1 Regulator ASX 176/FO DN 1" HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 133 Step Action Insert and fasten the screw (33) together with the locking ring (6) according to the tightening torque: • DN 1”: tab. 9.65. NOTICE! Tighten the screws according to the cross diagram in paragraph 9.4.2.2. Remove the O-ring (41) and replace it, taking care to lubricate it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
Page 134 34.1 Regulator ASX 176/FO DN 1" HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 135 Step Action Remove and replace the O-rings (42, 44, 47) from the indicator rod guide (12), lubricating them with synthetic grease. NOTICE! Before inserting the replacement O-rings, clean the retaining slots with a cleaning solution. Remove and replace the O-ring (42) from the stroke indicator cap (13), lubricating it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
Page 136 9.4.3.2 - REGULATOR ASX DN 2" - 6 " 34.1 Fig. 9.43. Regulator ASX 176/FO DN 2" - 6 " HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 137 Step Action WARNING! If fitted, remove the spacer. Place the regulator with the upstream mouthpiece (1) of the main regulator on a shockproof surface. Unscrew and remove the stroke indicator cap (13) together with the indicator slide (14) from the indicator rod guide (12).
Page 138 34.1 Regulator ASX 176/FO DN 2" - 6" HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 139 Step Action Insert and fix the screws (36) according to the following tightening torque: • DN 2”: tab. 9.66; • DN 3”: tab. 9.67; • DN 4”: tab. 9.68; • DN 6”: tab. 9.69. NOTICE! Tighten the screws according to the cross diagram in paragraph 9.4.2.2. Undo and remove the screws (31).
Page 140 34.1 Regulator ASX 176/FO DN 2" - 6" HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 141 Step Action Remove the downstream mouthpiece (4). Remove the reinforced gasket assembly (5, 6, 7, 8, 33, 43) from the downstream mouthpiece (4). Unscrew and remove the screws (33) together with the locking ring (6) from the gasket support (5). Remove and replace gasket ring support (8), gasket ring (7) and O-ring (43) from gasket support (5).
Page 142 34.1 Regulator ASX 176/FO DN 2" - 6" HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 143 Step Action Insert and fasten the screws (34.1) in the two threaded holes of the downstream cover (3) to compress the spring (54) and hold the upstream mouthpiece (1) and cover (2) assembly parallel to the downstream cover (3), according to the tightening torque: •...
Page 144: Regulator Maintenance Procedure Asx 176/Fo With Silencer Ldb/176
9.4.4 - REGULATOR MAINTENANCE PROCEDURE ASX 176/FO WITH SILENCER LDB/176 9.4.4.1 - REGULATOR ASX 176/FO WITH SILENCER LDB/176 DN 1" 34.1 Fig. 9.44. Regulator ASX 176/FO with silencer LDB/176 DN 1" HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00...
Page 145 Step Action WARNING! If fitted, remove the spacer. Place the regulator with the downstream mouthpiece (4) of the main regulator on a shockproof surface. Unscrew and remove the stroke indicator cap (13) together with the indicator slide (14) from the indicator rod guide (12).
Page 146 34.1 Regulator ASX 176/FO with silencer LDB/176 DN 1" HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 147 Step Action Check the hole in the transfer (19) on the diaphragm holder (10). WARNING! Make sure the hole is not obstructed. Remove and replace the O-ring (48) from the upstream mouthpiece (1), lubricating it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution. Remove and replace the I/DWR ring (52) from the upstream mouthpiece (1).
Page 148 34.1 Regulator ASX 176/FO with silencer LDB/176 DN 1" HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 149 Step Action Remove the O-ring (41) and replace it, taking care to lubricate it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution. Place the reinforced gasket assembly (5, 6, 7, 8, 33, 43) in the downstream cover (3). Place the downstream mouthpiece (4) in the downstream cover (3).
Page 150 34.1 Regulator ASX 176/FO with silencer LDB/176 DN 1" HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 151 Step Action Insert the indicator rod assembly (15, 16) into the downstream cover (3) and coupling disc (18). Hook the extension (15) into the diaphragm holder (11). Insert and screw the indicator rod guide (12) into the downstream cover (3). Insert and secure the stroke indicator cap (13) together with the indicator slide (14) in the indicator rod guide (12).
Page 152 9.4.4.2 - REGULATOR ASX 176/FO WITH SILENCER LDB/176 DN 2” - 6” 34.1 34.1 34.1 Fig. 9.45. Regulator ASX 176 with silencer LDB/176 DN 2” - 6” HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 153 Step Action WARNING! If fitted, remove the spacer. Place the regulator with the downstream mouthpiece (4) of the main regulator on a shockproof surface. Unscrew and remove the stroke indicator cap (13) together with the indicator slide (14) from the indicator rod guide (12).
Page 154 34.1 34.1 34.1 Regulator ASX 176 with silencer LDB/176 DN 2” - 6” HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 155 Step Action Insert and fix the screws (36) according to the following tightening torque: • DN 2”: tab. 9.71; • DN 3”: tab. 9.72; • DN 4”: tab. 9.73; • DN 6”: tab. 9.74. NOTICE! Tighten the screws according to the cross diagram in paragraph 9.4.2.2. Check the hole in the transfer (19) on the diaphragm holder (10).
Page 156 34.1 34.1 34.1 Regulator ASX 176 with silencer LDB/176 DN 2” - 6” HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 157 Step Action Remove the reinforced gasket assembly (5, 6, 7, 8, 33, 43) together with the LDB/176 grid (70) from the down- stream mouthpiece (4). Remove and replace the O-rings (49) from the downstream cover (3) by lubricating them with synthetic grease. NOTICE! Before inserting the replacement O-rings, clean the retaining slots with a cleaning solution.
Page 158 34.1 34.1 34.1 Regulator ASX 176 with silencer LDB/176 DN 2” - 6” HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 159 Step Action Place the upstream cover (2) and the upstream mouthpiece (1) in the plug (9). NOTICE! Take care not to damage the O-ring (48), the I/DWR (52). Insert and fasten the screws (34.1) in the two threaded holes of the downstream cover (3) to compress the spring (54) and hold the upstream mouthpiece (1) and cover (2) assembly parallel to the downstream cover (3), according to the tightening torque: •...
Page 160: Maintenance Procedure Built-In Monitor Pm/176 Or Built-In Slam-Shut Valve Ssx/176
9.4.5 - MAINTENANCE PROCEDURE BUILT-IN MONITOR PM/176 OR BUILT-IN SLAM-SHUT VALVE SSX/176 9.4.5.1 - BUILT-IN MONITOR PM/176 OR BUILT-IN SLAM-SHUT VALVE SSX/176 DN 1" Fig. 9.46. PM/176 or SSX/176 DN 1" HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 161 Step Action WARNING! If fitted, remove the spacer. Place the regulator with the downstream mouthpiece (4) of the main regulator on a shockproof surface. Unscrew and remove the stroke indicator cap (13) together with the indicator slide (14) from the indicator rod guide (12).
Page 162 PM/176 or SSX/176 DN 1" HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 163 Step Action VALID ONLY FOR PM/176 DN 1" Check the hole in the transfer (19) on the diaphragm holder (10). WARNING! Make sure it is not obstructed. Remove and replace the O-ring (48) from the upstream mouthpiece (1), lubricating it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
Page 164 PM/176 or SSX/176 DN 1" HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 165 Step Action Remove the O-ring (41) and replace it, taking care to lubricate it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution. Place the reinforced gasket assembly (5, 6, 7, 8, 33, 43) in the mouthpiece (70). Place the downstream cover (3) in the mouthpiece (70).
Page 166 PM/176 or SSX/176 DN 1" HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 167 Step Action Insert the indicator rod assembly (12) into the downstream cover (3). Hook the extension (15) into the left diaphragm holder (10). Insert and screw the indicator rod guide (12) into the downstream cover (3). Insert and secure the stroke indicator cap (13) together with the indicator slide (14) in the indicator rod guide (12).
Page 168 9.4.5.2 - BUILT-IN MONITOR PM/176 OR BUILT-IN SLAM-SHUT VALVE SSX/176 DN 2" TO 6 " Fig. 9.47. PM/176 or SSX/176 DN 2” - 6” HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 169 Step Action WARNING! If fitted, remove the spacer. Place the regulator with the downstream mouthpiece (4) of the main regulator on a shockproof surface. Unscrew and remove the stroke indicator cap (13) together with the indicator slide (14) from the indicator rod guide (12).
Page 170 PM/176 or SSX/176 DN 2” - 6” HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 171 Step Action Insert and fix the screws (36) according to the following tightening torque: • DN 2”: tab. 9.76; • DN 3”: tab. 9.77; • DN 4”: tab. 9.78; • DN 6”: tab. 9.79. NOTICE! Tighten the screws according to the cross diagram in paragraph 9.4.2.2. ONLY VALID FOR PM/176 DN 2"...
Page 172 PM/176 or SSX/176 DN 2” - 6” HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 173 Step Action Undo the screws (32) together with the washers (61). Remove the downstream mouthpiece (70). Remove the reinforced gasket assembly (5, 6, 7, 8, 33, 43) from the mouthpiece (70). Unscrew and remove the screws (33) together with the locking ring (6) from the gasket support (5). Remove and replace gasket ring support (8), gasket ring (7) and O-ring (43) from gasket support (5).
Page 174 PM/176 or SSX/176 DN 2” - 6” HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 175 Step Action Insert and fasten the screws (34.1) in the two threaded holes of the downstream cover (3) to compress the spring (54), and hold the upstream mouthpiece (1) and cover (2) assembly parallel to the downstream cover (3), according to the tightening torque: •...
Page 176: Pilot Maintenance Procedure 200/A/Fo And 200/A Series + R14/A/Fo And R14/A Pre-Regulator
9.4.6 - PILOT MAINTENANCE PROCEDURE 200/A/FO AND 200/A SERIES + R14/A/FO AND R14/A PRE-REGULATOR 9.4.6.1 - 200/A/FO AND 200/A SERIES PILOT DISCONNECTION + R14/A/FO AND R14/A PRE-REGULA- DOWNSTREAM SENSING ELEMENT IMPULSO A VALLE LOADING MOTORIZZAZIONE UPSTREAM SENSING ELEMENT IMPULSO DI MONTE VENT SFIATO VENT...
Page 177 To disconnect the 200/A/FO series pilot, proceed as in Table 9.95: Step Action Disconnect the sensing lines between the 200/A/FO pilot and the regulator by adjusting the fittings (2, 3, 8, 9). Unscrew and remove the fixing screw to remove the pilot from the regulator. Remove the pipe (20) by adjusting the fittings (4, 5).
Page 178 9.4.6.2 - PILOT 204/A/FO-204/A AND 205/A/FO-205/A A ASSEMBLY (PLUG) 26.1 B ASSEMBLY (VALVE) Fig. 9.49. Pilot 204/A/FO-204/A and 205/A/FO-205/A HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 179 Step Action Loosen the nut (9). Completely release the spring (22) by turning the adjusting screw (10). Remove the adjusting screw (10) together with the cap (9). Remove the cap (8). Remove the O-ring (38) from the cap (8) and replace it, taking care to lubricate it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
Page 180 A ASSEMBLY (PLUG) 26.1 B ASSEMBLY (VALVE) Pilot 204/A/FO-204/A and 205/A/FO-205/A HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 181 Step Action Unscrew and remove the nut (25). Remove the lower protection disc (15). Remove and replace the lower diaphragm (16), taking care to lubricate the lanyards with synthetic grease. NOTICE! Before inserting the replacement diaphragm, clean the retaining slots with a cleaning solution. Fit the lower protection disc (15).
Page 182 9.4.6.3 - PILOT 207/A/FO AND 207/A A ASSEMBLY (PLUG) B ASSEMBLY (VALVE) Fig. 9.50. Pilot 207/A/FO and 207/A HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 183 Step Action Loosen the nut (9). Completely release the spring (22) by turning the adjusting screw (10). Remove the adjusting screw (10) together with the cap (9). Remove the cap (8). Remove the O-ring (38) from the cap (8) and replace it, taking care to lubricate it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
Page 184 A ASSEMBLY (PLUG) B ASSEMBLY (VALVE) Pilot 207/A/FO and 207/A HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 185 Step Action Insert assembly “A” (plug) the bottom upwards into the valve body (4). NOTICE! • Take care not to damage the diaphragms (16) during this step. • Make sure the marking on the lower section of the headframe is parallel to the axis of the hole for inserting the seat (3) into the valve body (4).
Page 186 9.4.6.4 - R14/A/FO PRE-REGULATOR A ASSEMBLY (PLUG) B ASSEMBLY (CAP) Fig. 9.51. R14/A/FO Pre-regulator HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 187 Step Action Undo and remove the screws (15). Remove the cover (2) Remove assembly “A” (plug). Remove the spring (12). Unscrew and remove the nut (16). Remove the spring (25). Remove the plug (5). Remove and replace the O-ring (17) from the diaphragm protection disc (6), lubricating it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
Page 188 A ASSEMBLY (PLUG) B ASSEMBLY (CAP) R14/A/FO Pre-regulator HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 189 Step Action Remove the O-rings (18, 19) from the cap (4) and replace them, taking care to lubricate them with synthetic grease. NOTICE! Before inserting the replacement O-rings, clean the retaining slots with a cleaning solution. Put the filter (13) and the plug guide (3) in place. Fit the ring (8).
Page 190 9.4.6.5 - PRE-REGULATOR R14/A A ASSEMBLY (PLUG) B ASSEMBLY (CAP) Fig. 9.52. Pre-regulator R14/A HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 191 Step Action Undo and remove the screws (15). Remove the cover (2) Remove assembly “A” (plug). Remove the spring (12). Unscrew and remove the nut (16). Insert the diaphragm protection disc (6) and the diaphragm (10). Remove and replace the O-ring (17) from the diaphragm protection disc (7), lubricating it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
Page 192 A ASSEMBLY (PLUG) B ASSEMBLY (CAP) Pre-regulator R14/A HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 193 Step Action Fit the ring (8). Position and secure the assembly " B " (cap). NOTICE! Take care not to damage the O-rings (18, 19) during this step. Fit the spring (12). Insert assembly “A” (plug) into the body (1). NOTICE! Before inserting the plug unit, lubricate the plug surface with silicone grease.
Page 194 9.4.6.6 - 200/A/FO AND 200/A SERIES PILOT CONNECTION + R14/A/FO AND R14/A PRE-REGULATOR IMPULSO DOWNSTREAM A VALLE SENSING ELEMENT LOADING MOTORIZZAZIONE VENT UP- IMPULSO STREAM DI MONTE SENSING SFIATO VENT ELEMENT Fig. 9.53. 200/A and R14/A series pilot NOTICE! The connection to the pilot circuit piping of the 200/A/FO pilot and R14/A/FO pre-regulator is different: please refer to the picture below.
Page 195 To disconnect the 200/A/FO series pilot, proceed as in Table 9.101: Step Action Insert and fasten the screw (7) to the pilot 200/A/FO. Insert and fasten the screw (6) to connect the R14/A/FO pre-regulator to the 200/A/FO pilot. Connect the pipe (20) by adjusting the fittings (4, 5). Insert and fix the fixing screw to connect the pilot to the regulator.
Page 196: Maintenance Procedure For M/A Accelerating Valve
9.4.7 - MAINTENANCE PROCEDURE FOR M/A ACCELERATING VALVE Fig. 9.54. M/A accelerating valve HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 197 Step Action Loosen the nut (27). Completely release the spring (22) by turning the adjusting screw (28). Remove the adjusting screw (28) together with the nut (27). Remove the cap (17). Remove the O-ring (40) from the cap (17) and replace it, taking care to lubricate it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
Page 198 Accelerating valve M/A HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 199 Step Action Remove the O-ring (43) from the plug guide (9) and replace it, taking care to lubricate it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution. Fit the plug guide (9) together with the reinforced gasket (7). Place the gasket support (1) in the body (10).
Page 200: Maintenance Procedure For Pressure Switches Models 102M/102Mh - 105M/105Mh
9.4.8 - MAINTENANCE PROCEDURE FOR PRESSURE SWITCHES MODELS 102M/102MH - 105M/105MH 9.4.8.1 - PRESSURE SWITCH MOD. 102M/102MH Mod. 102 Fig. 9.55. Pressure switch Mod. 102M/102MH HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 201 Step Action Unscrew and remove the cap (18). Remove the O-ring (16) from the cover (18) and replace it, taking care to lubricate it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution. Completely release the spring (11) by adjusting the ring nut (13).
Page 202 Mod. 102 Pressure switch Mod. 102M/102MH HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 203 Step Action Remove the U-shaped ring (4) from the bush (35) and replace it, taking care to lubricate it with synthetic grease. NOTICE! Before inserting the replacement U-ring, clean the retaining slots with a cleaning solution. Position the bush (35) together with the O-ring (27). NOTICE! Before inserting the bush (35), lubricate the inner surface with silicone grease.
Page 204 9.4.8.2 - PRESSURE SWITCH MOD. 103M/103MH Mod. 103/103MH Fig. 9.56. Pressure switch Mod. 103M/103MH HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 205 Step Action Unscrew and remove the cap (18). Remove the O-ring (16) from the cover (18) and replace it, taking care to lubricate it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution. Completely release the spring (11) by adjusting the ring nut (13).
Page 206 Mod. 103/103MH Pressure switch Mod. 103M/103MH HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 207 Step Action Position the bush (35) together with the O-ring (27). NOTICE! Before inserting the bush (35), lubricate the internal surface with silicone grease. Remove the lower cover (41) Insert and fix the screws (48) according to the following tightening torque: •...
Page 208 9.4.8.3 - PRESSURE SWITCH MOD. 104M/104MH - 105M/105MH Mod. 104M/104MH Mod. 105M/105MH Fig. 9.57. Pressure switch Mod. 104M/104MH - 105M/105MH HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 209 Step Action Unscrew and remove the cap (18). Remove the O-ring (16) from the cover (18) and replace it, taking care to lubricate it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution. Completely release the spring (11) by adjusting the ring nut (13).
Page 210 Mod. 104M/104MH Mod. 105M/105MH Pressure switch Mod. 104M/104MH - 105M/105MH HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 211 Step Action Insert and fix the screws (48) according to the following tightening torques: • Mod. 104M/104MH - 105M/105MH > tab. 9.85 NOTICE! Tighten the screws according to the cross diagram in paragraph 9.4.2.2. Fit the upper cover (40). Insert and fix the screws (42) according to the following tightening torques: •...
Page 212: Line-Off 2.0 Maintenance Procedure
9.4.9 - LINE-OFF 2.0 MAINTENANCE PROCEDURE 9.4.9.1 - LINE OFF 2.0 DISCONNECTION IMPULSO DI UPSTREAM SENS- MONTE ING ELEMENT IMPULSO A VALLE DOWNSTREAM SENSING ELEMENT BY-PASS BYPASS PRESSIONE DI COMANDO CONTROL PRESSURE Fig. 9.58. LINE OFF 2.0 HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV.
Page 213 To disconnect, proceed as in Table 9.107: Step Action Disconnect the pipes from the fittings (1, 2, 3, 4). Unscrew and remove the fixing screw to disconnect the LINE OFF 2.0. Disconnect the pipe (20) from the fittings (5, 6). Disconnect the pipe (21) from the fittings (7, 8).
Page 214 9.4.9.2 - HP2/2 BYPASS DEVICE Fig. 9.59. HP2/2 bypass device HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 215 Step Action Remove the knob (9). Undo and remove the screws (15). Remove the cover (2) together with the bush (4), spring (13), plug (12) and stem (8). Remove the bush (4), together with the spring (13), plug (12), stem (8) from the cover (2). Remove the O-ring (22) from the cover (2) and replace it, taking care to lubricate it with synthetic grease.
Page 216 HP2/2 bypass device HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 217 Step Action Fit and fix the seat (6) in the body (1). NOTICE! Care must be taken not to ruin the seat profile during this step. Fit the bush (4) in the cover (2). Screw the stem (8) into the plug (12). NOTICE! Before fitting the stem (8), apply thread locking glue.
Page 218 9.4.9.3 - PRESSURE REGULATOR R44/SS 24.1 24.1 A ASSEMBLY (PLUG) 26.1 26.1 B ASSEMBLY (VALVE) Fig. 9.60. Pressure regulator R44/SS HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 219 Step Action Remove the seeger ring (54). Unscrew the nut (9). Completely release the spring (23) by turning the adjusting screw (10) Unscrew and remove the cap (8). Remove the spring (23) and the spring supports (7). Remove the screw (10) from the cap (8) clockwise, from the inside to the outside. Remove the O-ring (11) from the cap (8) and replace it, taking care to lubricate it with synthetic grease.
Page 220 24.1 24.1 A ASSEMBLY (PLUG) 26.1 26.1 B ASSEMBLY (VALVE) Pressure regulator R44/SS HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 221 Step Action Remove the O-ring (56) from the cover (1) and replace it, taking care to lubricate it with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution. Remove the O-rings (53, 62) from the cover (1) and replace it, taking care to lubricate them with synthetic grease.
Page 222 24.1 24.1 A ASSEMBLY (PLUG) 26.1 26.1 B ASSEMBLY (VALVE) Pressure regulator R44/SS HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 223 Step Action Insert and fix the valve seat (38). NOTICE! Take care not to damage the valve seat profile (38) and the O-ring (50). Remove assembly “A” (plug) from the valve body (4). Unscrew and remove the pilot nut (2). Remove the spring (21).
Page 224 24.1 24.1 A ASSEMBLY (PLUG) 26.1 26.1 B ASSEMBLY (VALVE) Pressure regulator R44/SS HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 225 Step Action Insert and fix the screws (24.1) according to the following tightening torque: • R44/SS > tab. 9.87 NOTICE! Tighten the screws according to the cross diagram in paragraph 9.4.2.2. Fit the gaskets (19) and the filter (68). Position and secure the nut (13). Fit the piston (59) into the spacer (4).
Page 226 9.4.9.4 - AR100 LAMINATION VALVE SEZ. A-A SECT. A-A Fig. 9.61. AR100 lamination valve Step Action Undo and remove the locking screw (97). Remove the O-rings (96) from the AR100 lamination valve body (1) and replace them, taking care to lubricate them with synthetic grease.
Page 227 Step Action Remove the O-rings (6, 7) from the cap (2) and replace them, taking care to lubricate them with synthetic grease. NOTICE! Before inserting the replacement O-rings, clean the retaining slots with a cleaning solution. Remove and replace the filter (5). Fit and fix the cap (2) according to the following tightening torque: •...
Page 228 9.4.9.5 - SAFETY VALVE VS/FI FOR LINE OFF 2.0 Fig. 9.62. Safety valve VS/FI for LINE OFF 2.0 HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 229 Step Action Pull out the locking screw (1). Remove the O-rings (8) from the body (2) and replace them, taking care to lubricate them with synthetic grease. NOTICE! Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution. Remove the vent plug (7) and make sure that it is not obstructed by any dirt.
Page 230 9.4.9.7 - VALVE 3/2 SECT. A-A DETAIL C 46.1 SECT. B-B 46.2 46.3 Fig. 9.63. Valve 3/2 HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 231 Step Action NOTICE! Make sure the slam-shut device is set to “OFF”. Undo and remove the screws (122) of the pressure switch cover (119). Remove the pressure switch cover (119) together with the gasket (139). Turn the device upside down. Undo and remove the screw (19) and the lever (18).
Page 232 SECT. A-A DETAIL C 46.1 SECT. B-B 46.2 46.3 Valve 3/2 HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 233 Step Action Remove the O-ring (46.3) and the bush (8). Remove the O-ring (46.2) and the bush (9). Take out the O-ring (46.1). Replace the O-rings (46.1, 46.2 and 46.3) and lubricate them with synthetic grease. NOTICE! Before inserting the replacement O-rings, clean the retaining slots with a cleaning solution. Remove the O-ring (46.1) and the perforated bush (9).
Page 234 SECT. A-A DETAIL C 46.1 SECT. B-B 46.2 46.3 Valve 3/2 HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 235 Step Action Insert the valve cover (4) so that the spring (12) rests on the lever of the pressure switch. NOTICE! Keep the valve cover (4) tilted for easier assembly. Push and tilt the valve cover upwards (4). Insert the valve body (3) together with the stem assembly (5, 6, 7, 8, 9, 10) into the valve cover (4). NOTICE! The valve body (3) must be centred with the centring pin (2).
Page 236 9.4.9.8 - LINE OFF 2.0 RECONNECTION IMPULSO DI UPSTREAM SENS- MONTE ING ELEMENT IMPULSO A VALLE DOWNSTREAM SENSING ELEMENT BY-PASS BYPASS PRESSIONE DI COMANDO CONTROL PRESSURE Fig. 9.64. LINE OFF 2.0 HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 237: Procedure For Recommissioning After Maintenance
To reconnect, proceed as in Table 9.113: Step Action Remove assembly “E” (valve 3/2 and control device) from assembly “C” (regulator R44/SS) together with the fitting (12). Remove assembly “D” (safety valve VS/FI) together with the fitting (11). Remove assembly “B” (lamination valve AR100) together with the fitting (10). Remove assembly “A”...
Page 238 HIGH PRESSURE REGULATOR MAINTENANCE AND FUNCTIONAL CHECKS REV. 00 Use, maintenance and warning instructions...
Page 239: Troubleshooting
• qualified and authorised to carry out activities related to the equipment. WARNING! PIETRO FIORENTINI S.p.A. shall not be held liable for any damage to people and property due to services: • other than those described; • performed according to methods other than those specified;...
Page 240: Operator Qualification Specification
10.2 - OPERATOR QUALIFICATION SPECIFICATION Commissioning • Mechanical maintenance technician; • Electrical maintenance technician; Operator qualification • Installer; • User’s technician. WARNING! The PPE listed in this table is related to the risk associated with the equipment. PPE required For the PPE required to protect against risks associated with the workplace, installation or operating conditions, please refer to: •...
Page 241: Troubleshooting Tables
10.4 - TROUBLESHOOTING TABLES NOTICE! Refer to chapter 9 “Maintenance and functional checks” for the pictures of the ASX 176/FO regulator and its accessories. 10.4.1 - TROUBLESHOOTING REGULATOR ASX 176/FO WARNING! If the built-in slam-shut valve has tripped, close the upstream and downstream shut-off valves (V1 and V2) of the line before any operation and relieve the pressure.
Page 242 Failure Device Possible causes Service Reinforced gasket (7) dirty or Clean and replace if needed damaged O-ring (43) not sealing Clean and replace if needed REGULATOR Upstream O-ring (48) not Clean and replace if needed sealing Plug (9) dirty or damaged Clean and replace if needed O-ring (17) not sealing Clean and replace if needed...
Page 243 Failure Device Possible causes Service Reinforced gasket (7) dirty or Clean and replace if needed damaged Ice between reinforced gasket Increase the regulator gas (7) and plug (9) inlet temperature O-ring (43) not sealing Clean and replace if needed O-ring (48) not sealing Clean and replace if needed Plug locked (9) Clean...
Page 244: Troubleshooting Of Silencer Ldb/176
10.4.2 - TROUBLESHOOTING OF SILENCER LDB/176 Failure Device Possible causes Service Downstream pressure LDB/176 Grid (70) dirty Clean decreases Tab. 10.116. HIGH PRESSURE REGULATOR TROUBLESHOOTING REV. 00 Use, maintenance and warning instructions...
Page 245: Troubleshooting Of Built-In Monitor Pm/176
10.4.3 - TROUBLESHOOTING OF BUILT-IN MONITOR PM/176 Failure Device Possible causes Service Lubricate and replace if I/DWR (52) frictions necessary Lubricate and replace if O-ring (48) friction necessary Plug locked (9) Clean and replace if needed Breakage of the diaphragm (50) Replace Transfer hole (19) obstructed Clean...
Page 246 Failure Device Possible causes Service Reinforced gasket (7) dirty or Clean and replace if needed damaged Ice between reinforced gasket (7) Clean and plug (9) O-ring (43) not sealing Clean and replace if needed O-ring (48) not sealing Clean and replace if needed Plug locked (9) Clean PM/176...
Page 247: Troubleshooting Of Built-In Slam-Shut Valve Ssx/176
10.4.4 - TROUBLESHOOTING OF BUILT-IN SLAM-SHUT VALVE SSX/176 AND LINE OFF 2.0 DEVICE Failure Device Possible causes Service Incorrect calibration of maxi- Repeat calibration by ad- mum or minimum spring justing the ring nuts Clean and lubricate levers; Incorrect tripping PRESSURE SWITCH MOD.
Page 248 Failure Device Possible causes Service Plug (9) with friction Clean and lubricate Lubricate and replace if O-ring (48) friction SSX/176 necessary Lubricate and replace if I/DWR (52) friction necessary HP2/2 Filter (11) clogged Replace AR100 Filter (5) clogged Replace Breakage of the lower dia- Replace phragm (16) Breakage of the upper dia-...
Page 249 Failure Device Possible causes Service Plug (9) with friction Clean and lubricate Lubricate and replace if O-ring (48) friction necessary SSX/176 Lubricate and replace if I/DWR (52) frictions necessary Breakage of the diaphragm Replace (50) Lower diaphragm (16) not Clean and replace if needed sealing Intentional tripping O-ring (28) not sealing...
Page 250 HIGH PRESSURE REGULATOR TROUBLESHOOTING REV. 00 Use, maintenance and warning instructions...
Page 251: Uninstallation And Disposal
11 - UNINSTALLATION AND DISPOSAL 11.1 - GENERAL SAFETY WARNINGS HAZARD! Make sure that there are no potentially explosive ignition sources in the work area set up to uninstall and/ or dispose of the equipment. WARNING! Before proceeding with uninstallation and disposal, make the equipment safe by disconnecting it from any power supply.
Page 252: Disposal Information
11.5 - DISPOSAL INFORMATION NOTICE! Bear in mind that the laws in force in the country of installation must be complied with. Illegal or improper disposal involves the application of the penalties provided for by the legislation in force in the country of installation. NOTICE! Proper disposal prevents damage to humans and the environment and promotes the reuse of precious raw materials.
Page 253: Recommended Spare Parts
If non-original spare parts are used,PIETRO FIORENTINI S.p.A. their declared performance cannot be guaranteed. It is recommended to use PIETRO FIORENTINI S.p.A. original spare parts PIETRO FIORENTINI S.p.A. shall not be held liable for any damage caused by using non-original parts. 12.2 - HOW TO REQUEST SPARE PARTS NOTICE! For specific information, please refer to the sales network of PIETRO FIORENTINI S.p.A.
Page 254 HIGH PRESSURE REGULATOR RECOMMENDED SPARE PARTS REV. 00 Use, maintenance and warning instructions...
Page 255: Calibration Tables
13 - CALIBRATION TABLES 13.1 - 200 SERIES PILOT CALIBRATION TABLES The PM/176 monitor uses the 204/A, 205/A and 207/A pilots, and the R14/A pre-regulator. The adjustment ranges of the different pilots are shown in the following tables: Pilot 204/A Pos.
Page 256: Calibration Tables For Pressure Switches Models 102M/102Mh - 105M/105Mh
13.2 - CALIBRATION TABLES FOR PRESSURE SWITCHES MODELS 102M/102MH - 105M/105MH Below are the calibration tables for the pressure switches that may be installed in the built-in slam-shut valves: Mod. 102M/102MH - Max pressure Pos. Spring item code Spring colour Min.
Page 257 Mod. 103M - Min pressure Pos. Spring item code Spring colour Min. 2700464 Orange 2700513 0.501 2700713 Green 0.801 2700750 Black 1.701 2700985 Brown 4.001 d = Wire Diameter (mm) Lo = Spring Length (mm) De = External Diameter (mm) Min./Max. = pressure (bar) Tab.
Page 258 Mod. 105M/105MH - Max pressure Pos. Spring item code Spring colour Min. 2702280 White/Red 2702454 Fuchsia 65.001 d = Wire Diameter (mm) Lo = Spring Length (mm) De = External Diameter (mm) Min./Max. = pressure (bar) Tab. 13.135. Mod. 105M - Min pressure Pos.

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