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Instruction Manual
ATEX Addendum to SRU Instruction Manual - Rotary Lobe Pump - SRU Range
IMPORTANT!
When ordering spare parts please quote Pump Serial No.
Read all of this pump manual and any instructions supplied for ancillary equipment before the unit is installed,
operated or maintained.
ESE02195-EN5
Original manual
2014-11
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Summary of Contents for Alfa Laval SRU Series
- Page 1 Instruction Manual ATEX Addendum to SRU Instruction Manual - Rotary Lobe Pump - SRU Range IMPORTANT! When ordering spare parts please quote Pump Serial No. Read all of this pump manual and any instructions supplied for ancillary equipment before the unit is installed, operated or maintained.
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Page 3: Table Of Contents
Table of contents The information herein is correct at the time of issue but may be subject to change without prior notice 1. EC Declaration of Conformity ............... 1.1. ATEX Directive 94/9/EC ................1.2. ATEX marking ..................2. Safety ....................2.1. -
Page 5: Ec Declaration Of Conformity
1 EC Declaration of Conformity Revision of Declaration of Conformity 2009-12-29 The Designated Company Alfa Laval Eastbourne, Alfa Laval Ltd Company Name Birch Road, Eastbourne, East Sussex BN23 6PQ Address +44 (0) 1323 412555 Phone No. Production year We hereby declare that the following machinery conforms to the provision of directive 94/9/EC group II category 2 & 3 G & D and to the following other relevant directives. - Page 7 1 EC Declaration of Conformity Revision of Declaration of Conformity 2009-12-29 The Designated Company Alfa Laval Eastbourne, Alfa Laval Ltd Company Name Birch Road, Eastbourne, East Sussex BN23 6PQ Address +44 (0) 1323 412555 Phone No. Production year We hereby declare that the following equipment is intended for installation into a machine or to be assembled with other equipment and/or machines into a machine.
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Page 8: Atex Directive 94/9/Ec
EN13463-1, EN13463-5 (c), EN13463-6 (b), EN13463-8 (k) 1.2 ATEX marking Typical nameplate 1. Pump type Manufacturer Alfa Laval Eastbourne 2. Serial no. Alfa Laval Ltd, UK 3. Production year Type 4. Reference of technical file at notified body: 9612-9601 Serial No. Year 5. ATEX marking Tech. -
Page 9: Safety
2 Safety 2.1 Special conditions for safe use - Ensure checks and running conditions for the pump unit during operation to be according to “Operation” section 4. - Never operate pump outside max duty conditions specified in “Seal Operation Data” section 6.3 Seal Operation Data. If the duty conditions change please refer to pump manufacturer. -
Page 10: Installation
3 Installation 3.1 Installation Pumps and motorized pump units - Always follow the Installation instructions in the Standard Instruction Manual in conjunction with this addendum - Always ensure that instructions for all ATEX compliant equipment and components are followed (motors, couplings, reduction gears etc.) - Always make sure that pump gearbox, base plate and motor are electrically earthed - Always read section 4“Operation”... -
Page 11: Operation
4 Operation 4.1 Operation Pump units - Always read the operations instructions in the Standard Instruction Manual - Always read “Technical information” for shaft seals in section 6.1 - Always vent and purge the seal cavities and flush housing (if applied) of air/gas prior to start-up to avoid any dry-running. - Always make a visual inspection of the pump unit at startup to ensure there are no malfunctions e.g. -
Page 12: Daily Checks
4 Operation 4.3 Daily Checks Shaft seals, all types: - Ensure there is no unacceptable leakage. Shaft seals fitted with optional thermocouple: - Ensure proper function of signals and alarms related to the thermocouple. - Ensure for single seal, that the thermocouple reading is similar to the process media temperature (no more than 20°C above). If this is not the case, check for abnormal running conditions. -
Page 13: Maintenance
5 Maintenance 5.1 General Maintenance Guidelines - Always follow the Maintenance instructions in the Standard Instruction Manual - Always read “Technical information” section 6.1 and the “Seal Operation Data” section 6.3 - Always ensure that instructions of all ATEX compliant equipment and components are followed (motors, couplings, reduction gears etc.) - Always read section 4“Operation”... -
Page 14: Mechanical Seals
5 Maintenance 5.3 Mechanical seals Mechanical seals should not be removed unless they are to be replaced. 5.3.1 R90 Single mechanical seal Refer to section 4.5.1 in Standard Instruction Manual 5.3.2 R90 Single mechanical seal with optional thermocouple Rotor Item Description Shaft Setting Dinemsion... - Page 15 5 Maintenance Seal fitting 1. Mark the shaft to indicate the seal setting length. 2. Lightly lubricate O-rings (71 and 73) with appropriate grease and fit to rotary and stationary seals (74 and 72). 3. If fitted replace abutment spacers. 4.
- Page 16 5 Maintenance Mechanical seals should not be removed unless they are to be replaced. 5.3.3 R90 Single flushed mechanical seal Refer to section 4.5.2 in Standard Instruction Manual 5.3.4 R90 Double flushed mechanical seal Refer to section 4.5.3 in Standard Instruction Manual 5.3.5 R90 Double flushed mechanical seal with optional thermocouple Item Description...
- Page 17 5 Maintenance Seal fitting: Ensure seal orientation is correct. 1. Lightly lubricate O-rings (71 and 73) with appropriate grease and fit to rotary seal assemblies and stationary seal rings (74A, 74B and 72). 2. Fit stationary seals into the rotorcase bores and seal housings (79) making sure the thermocouple lead is positioned at the thermocouple fixture.
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Page 18: Heating/Cooling Devices
5 Maintenance 5.4 Heating/Cooling devices SRU pumps have the option of being fitted with jackets to the rotorcase cover and/or saddles to the rotorcase. These are primarily used for heating the pumphead so as to maintain the pumped media temperature. They may also be used for cooling purposes. -
Page 19: Technical Data
6 Technical data 6.1 Shaft Seals The correct function of a mechanical seal is largely dependent upon its lubrication and cooling of the sealing surfaces. It is therefore extremely important to avoid any dry-running of the seal faces since this can cause excessive generation of heat and thus the possibility of exceeding the specified temperature class. - Page 20 6 Technical data Thermocouple The thermocouple will allow temperature measurement when connected to appropriate instrumentation. The temperature reading of the thermocouple must not exceed the maximum temperature stated in the ‘Seal Operating Data - section 6.3’. The thermocouple supplied is of Type K design and should be installed and maintained to appropriate standards for intrinsically safe circuits e.g.
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Page 21: Seal Operation Data
6 Technical data 6.3 Seal Operation Data Pump type model Pump serial No: Shaft size Group and category Temp Class Explosion sub division Application Primary Process media Point of selection Product * : Concentration : Temperature (°C): Suction pressure (bar): Discharge pressure (bar): Viscosity (cP): Shaft speed (RPM):... - Page 22 © Alfa Laval Corporate AB This document and its contents is owned by Alfa Laval Corporate AB and protected by laws governing intellectual property and thereto related rights. It is the responsibility of the user of this document to comply with all applicable intellectual property laws. Without limiting any rights related to this document, no part of this document may be copied, reproduced or transmitted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), or for any purpose, without the expressed permission of Alfa Laval Corporate AB.
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