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IM-P373-18
3739350/5
CTLS Issue 5
PM6 Stainless Steel
Piston Actuated Modulating Control Valves
Installation and Maintenance Instructions
1. Safety information
2. General product and
delivery information
3. Installation
4. Commissioning
5. Maintenance
6. Spare parts
7. Fault finding
© Copyright 2017
IM-P373-18 CTLS Issue 5
1
Printed in GB
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Table of Contents
Related Manuals for Spirax Sarco PM6
Summary of Contents for Spirax Sarco PM6
- Page 1 IM-P373-18 3739350/5 CTLS Issue 5 PM6 Stainless Steel Piston Actuated Modulating Control Valves Installation and Maintenance Instructions 1. Safety information 2. General product and delivery information 3. Installation 4. Commissioning 5. Maintenance 6. Spare parts 7. Fault finding © Copyright 2017...
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Page 2: Safety Information
Group 2 of the above mentioned Pressure Equipment Directive. The PM6 can also be used on propane or methane gases which are in Group 1 of the above Pressure Equipment Directive. The products’... -
Page 3: Protective Clothing
Allow time for temperature to normalise after isolation to avoid danger of burns. 1.9 Tools and consumables Before starting work ensure that you have suitable tools and/or consumables available. Use only genuine Spirax Sarco replacement parts. 1.10 Protective clothing Consider whether you and/or others in the vicinity require any protective clothing to protect against the hazards of, for example, chemicals, high / low temperature, radiation, noise, falling objects, and dangers to eyes and face. -
Page 4: Residual Hazards
1.11 Permits to work All work must be carried out or be supervised by a suitably competent person. Installation and operating personnel should be trained in the correct use of the product according to the Installation and Maintenance Instructions. Where a formal 'permit to work' system is in force it must be complied with. Where there is no such system, it is recommended that a responsible person should know what work is going on and, where necessary, arrange to have an assistant whose primary responsibility is safety. -
Page 5: Returning Products
1.17 Returning products Customers and stockists are reminded that under EC Health, Safety and Environment Law, when returning products to Spirax Sarco they must provide information on any hazards and the precautions to be taken due to contamination residues or mechanical damage which may present a health, safety or environmental risk. - Page 6 2.1 Description This document is a general installation and maintenance manual intended for the PM6 2-port pneumatically actuated modulating stainless steel control valve. The PM6 has been designed for use on steam, water, air, oil, gases and vacuum applications. As standard it is fitted with a PEEK plug seal for operation up to 180 °C (356 °F), and both the body and...
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Page 7: Technical Details
2.3 Technical details Leakage PEEK soft seal ASME class VI Flow characteristic Equal percentage Flow direction Flow under seat Port 2 to 1 Pilot media Instrument quality air 60 °C maximum Actuator rotation 360° Pilot connection Maximum pilot pressure Actuator Push-in type to suit Type 2 = 63 mm diameter 8 bar g... - Page 8 2.4 Materials Part Material Body Stainless steel AISI 316L Bonnet Stainless steel AISI 316L Plug Stainless steel AISI 316L Valve plug seal PEEK Valve stem Stainless steel AISI 316L Stem seals PTFE + Carbographite Stem 'O' ring (Not shown) Actuator housing 30% glass filled polyamide Piston Aluminium...
- Page 9 Fig. 1 PM6 IM-P373-18 CTLS Issue 5...
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Page 10: Pressure / Temperature Limits
2.6 Pressure / temperature limits Pressure psi g Steam saturation curve Pressure bar g The product must not be used in this region or beyond the body design conditions quoted in the table below as damage to the internals will occur. A - A PN10 A - C PN50 A - B PN16 and ASME 150... - Page 11 2.7 PMX - Maximum differential pressures for PM6 piston actuated valves * Notes: 1. Maximum differential pressure for saturated steam service is 9 bar g. 2. Sanitary clamp connections are limited to PN10 pressure rating. 3. ASME flange connections are limited to ASME 150 pressure rating.
- Page 12 2.8 Dimensions and weights (approximate) in mm and kg Screwed, socket weld and butt weld Actuator type Valve size and size D† Weight DN15 - ½" (63 mm) 269.0 DN20 - ¾" (63 mm) 274.0 DN25 - 1" (90 mm) 285.0 DN32 - 1¼"...
- Page 13 Sanitary clamp (ISO 2852) Actuator type Valve size and size Weight DN15 - ½" (63 mm) 313.0 269.0 34.0 17.2 DN20 - ¾" (63 mm) 320.5 274.0 34.0 21.3 DN25 - 1" (90 mm) 341.0 285.0 50.5 25.0 DN32 - 1¼" 3 (90 mm) 353.5 292.5...
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Page 14: Installation
3. Installation Note: Before actioning any installation observe the 'Safety information' in Section 1. Referring to the Installation and Maintenance Instructions, name-plate and Technical Information Sheet, check that the product is suitable for the intended installation: Check materials, pressure and temperature and their maximum values. Do not exceed the performance rating of the valve. - Page 15 Position transducer Pneumatic valve Outlet microvalve Port 2 Port 1 Fluid flow direction The fluid flow direction for the PM6 range of valves is always under the seat (ports 2 to 1) as illustrated Fig. 4 IM-P373-18 CTLS Issue 5...
- Page 16 (see auto set-up procedure in Section 4.4.2). PM6 valves are supplied pre-set, calibrated and tested by the manufacturer according to the model ordered. It is possible to modify the valve set-up from its factory default setting to better suit a particular application if required.
- Page 17 4.2 Valve positioner disassembly Note: Before actioning disassembly observe the ‘Safety information’ in Section 1. Caution: Ensure that valve is both electrically and pneumatically disconnected before disassembly. Unscrew the two blind nuts and remove the two rubber gaskets (as shown in Figure 6). Then, firmly hold the aluminium cylinder and then remove the top cover to access the electronic board (see Figure 5).
- Page 18 4.3 Dip switces - Configuration Altering the settings of the four dip switches gives different operating functions. Contact 1 – Process temperature: Fig. 7 Switch 1 is factory set. Contact 2 – Fail safe position: This parameter must be strictly defined upon order because it needs some specific components.
- Page 19 4.4 Connections and first start-up Caution: in order to safeguard the valve from electrostatic shocks or other electrical problems, it is necessary to connect the valve to earth (Contact No. 9 of the connector). 4.4.1 Electrical connection 1. U n s c r ew a n d r e m ove t h e connector from the positioner.
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Page 20: General Features
4.4.2 When the valve is connected in to the pipeline proceed as follows: 1. Connect the instrument quality air supply to the valve by means of flexible pipes Ø6 mm. CAUTION: A 25 μm mesh filter must be installed on the air supply in order to protect the micro- valves. -
Page 21: Maintenance
5. Maintenance Note: Before actioning any maintenance observe the 'Safety information' in Section 1. After replacing the spare parts, it is necessary to follow the first start-up procedure indicated in Section 4.4 and repeat the auto set-up cycle. 5.1 Reconfiguring the settings of the valve: Isolate the electricity supply to the unit (first the mA instrument signal, then the 24 Vdc power supply). - Page 22 Carefully lift the valve top cover. Caution: Care must be taken to avoid damaging the electrical connections when removing the top cover. Note: A gasket for the Ingress protection is assembled in the valve top cover; this offers some resistance when trying to lift it up: Carefully lift the electronic board from the two threaded bearings to access the dip switches (see Figure 14).
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Page 23: Spare Parts
6. Spare parts 6.1 Available spares Electronic board spare kit Transducer spare kit Inlet microvalve spare kit Outlet microvalve spare kit Spare seal kit - Is available for all valve and actuator sizes comprising: Piston 'O' ring, stem 'O' ring, valve head seal (PEEK), body seal and 'O' ring. Spring washer Stem lock-nut Spring... -
Page 24: Fault Finding
7. Fault finding Problem Solution status Check that the 24 Vdc electrical supply is connected and switched on. If it is a NC valve, please check that the set- point signal reaches the connector properly and that its value is higher than 0.2 V (or 4.4 mA). Flashing light If it is a NO valve, please check that the set-... - Page 25 Problem Solution status 1. Check if there is enough pressure in the air pipeline. The valve alarm 2. Check if there are possible mechanical is activated after obstructions or unrelated components inside Fixed light a few seconds of the valve which may hinder the movement of the valve.
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