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4930000/1
Steam Jet Thermocompressor
Installation and Maintenance Instructions
IM-P493-01 EMM Issue 2
SJT
Please note
that the
preferred
installation
orientation
is in the
horizontal
plane
IM-P493-01
1. Safety information
2. General product
information
3. Installation
4. Operation
5. Maintenance
6. Commissioning
7. Spare parts
8. Troubleshooting
© Copyright 2017
EMM Issue 2
1
Printed in GB
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Table of Contents
Related Manuals for Spirax Sarco Steam Jet Thermocompressor
Summary of Contents for Spirax Sarco Steam Jet Thermocompressor
- Page 1 IM-P493-01 4930000/1 EMM Issue 2 Steam Jet Thermocompressor Installation and Maintenance Instructions 1. Safety information 2. General product Please note that the information preferred installation orientation 3. Installation is in the horizontal plane 4. Operation 5. Maintenance 6. Commissioning 7. Spare parts 8.
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Page 2: Safety Information
Determine the correct installation situation and direction of fluid flow. iv) Spirax Sarco products are not intended to withstand external stresses that may be induced by any system to which they are fitted. It is the responsibility of the installer to consider these stresses and take adequate precautions to minimise them. - Page 3 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.
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Page 4: Residual Hazards
1.16 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 5: General Product Information
Instruction Manuals for these items to the rear of this document. An SJT Steam Jet Thermocompressor can be described as a particular type of Ejector. An Ejector is a device in which steam under pressure is used to entrain a gas or vapour that is at a lower pressure. - Page 6 2.4.2 User’s Rating Inspection Before installation of the SJT Steam Jet Thermocompressor, the user must ensure that the mechanical rating of the unit is suitable for the intended service. Details of the mechanical rating can be found on the name-plate and associated documentation.
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Page 7: Installation
Installation and Maintenance Instructions. 3.1 Suction piping and orientation - Installation considerations: 3.1.1 Spirax Sarco SJT Steam Jet Thermocompressors can be installed and operated in any position but, the preferred orientation is to have the ejector discharge connection pointing virtically downwards. - Page 8 3.2 Motive steam piping - Installation considerations: 3.2.1 The steam supply line to the thermocompressor is to be insulated to minimise heat loss and for personnel protection. 3.2.2 A steam isolation valve should be provided in the steam line, feeding the SJT steam jet thermocompressor.
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Page 9: Unit Installation
Actuator, a Positioner and an Air Regulating Set, assembly of the a aforementioned upon the Steam Jet Thermocompressor will already have been effectuated by Spirax-Sarco Limited prior to dispatch of the equipment. -
Page 10: Operation
4. Operation 4.1 General information regarding operation Steam under pressure is introduced to the Motive Nozzle, which is usually a converging / diverging type. As the steam passes through the Nozzle, its velocity is greatly increased and its pressure is reduced (pressure energy converted to velocity (Kinetic) energy). This results in a high velocity jet of steam emerging from the Nozzle outlet. -
Page 11: Pre-Operational Checks
4.2 Pre-operational checks 4.2.1 Check that all installation procedures have been carried out in accordance with the recommendations of these Installation and Maintenance Instructions and other Suppliers’ Manuals which may appear at the rear of this document. 4.2.2 Ensure that all connecting lines have been made free of foreign materials (e.g. weld spatter) which could potentially clog the small bores within the body of the Thermocompressor. -
Page 12: Preventive Maintenance
We recommend that the user creates maintenance schedules, safety manuals and inspection details for each specific installation of an SJT Steam Jet Thermocompressor. On all installations of the SJT Steam Jet Thermocompressor, the following items and conditions should be regularly checked by the user, for the purposes of maintenance: 1. -
Page 13: Spare Parts
7. Spare parts The only available spare parts for the SJT Steam Jet Thermocompressor is the Nozzle and its Gasket. For a complete replacement unit please contact Spirax Sarco and quote the following data: Unit Serial number: ........................ -
Page 14: Troubleshooting
Before setting out to examine why an SJT Steam Jet Thermocompressor is not performing correctly, we strongly recommend that all instruments are first checked to ensure that it is not them that is giving false readings. - Page 15 Sections 3.1, 3.2 and 3.3. 8.3 Internal causes of poor performance This involves an investigation into the individual SJT Steam Jet Thermocompressor. To perform a full investigation on an individual SJT, we recommend that the Nozzle is removed from its location, as described in Section 5.2 of these Installation and Maintenance Instructions.
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