UK - Sondex
Contents
1. A The contents of this publication are based on the latest information available and the materials that are used at the time of printing However because of rapid developments in this field we cannot be held liable for changes in specifications affecting the contents of this publication COPYRIGHT Copyright SONDEX HOLDING A S All rights reserved No part of this publication may be reproduced or distributed without prior written permission of SONDEX HOLDING A S CONTENTS N w Ui N oo FOREWORD INTRODUCTION SAFETY ALERT NOTICES siooni wre ans ard ore ernst d ener den tieten denis GENERAL asen 4 1 Identification of the heat exchanger cece eee eee e eee e eee e en enes A Z CorrectioperatlOn sn oe varens eene ve lemen a aig eea ene 4 3 Precautions 4 4 Thermal design INSTALLATION 5 1 Requirements to the installation area cece cece cece eee enen 5 2 Transport lifting Storage rans beenen beenen E dieken 5 3 Installing the pipe connections oenen ener eeen enen eeens COMMISSIONING OPERATION scs aat oriens neen welnee venneker enn 6 1 Commissioning and pre checks 00 cece cece eee eee en eeen enen 6 2 Operation 6 3 Shut down for a short period 0 cece cece cece cece eee eneen enen enen 6 4 Shut down for a long period cece cece cece eee tence nent ene enen MAINTENANCE ZI Clean in place CIP oa2. If you wish to alter the design conditions please contact us You may only commission the heat exchanger under the modified conditions after inspection and written approval by SONDEX Also the name plate on the heat exchanger will be adapted 3 SAFETY ALERT NOTICES Safety Alert Notice Following MUST be respected by installing running servicing plate heat exchangers Keeping current local safety regulations Before any work begins ensure that the exchangers are pressureless and cooled till under 40 C Use gloves for preventing any injury In all cases ensure that all laws and regulations are strictly kept concerning human environment protection YELLOW TRIANGLE Refer to applicable SAFETY ALERT notices within the manual All SAFETY ALERT notices are applicable to personal injury and identified by the following symbol O 4 GENERAL 4 1 Identification of the heat exchanger All plate type heat exchangers supplied by SONDEX are provided with a name plate On this plate the following details are specified e type of heat exchanger e year of manufacture e manufacturing number e nominal capacity in kW e transmission area in m e max working pressure in bar e test pressure in bar e max working temperature in C Find your local service partner at www sondex net SAW Type Serial No Heat Surface Product Side Media Side Working
3. no less than the service or product flows Follow the instructions as given by the detergent supplier cleaning specialist We suggest that for recirculated cleaning detergent methods the fluid should be pumped through the exchanger for no less than 30 minutes but this is only an estimate the cleaning time depends on the type of fouling Rinsing After using any type of cleaning agent always rinse thoroughly with fresh water If cleaning in place then circulate fresh water for at least 10 minutes 7 2 Some Cleaning Detergents Oil and grease can be removed with a water emulsifying oil solvent i e BP system Organic and grease cover can be removed with sodium hydroxide NaOH maximum concentration 1 5 max temp 85 C Mixture for 1 5 concentration 5 Itr 30 NaOH per 100 Itr water Stone and limestone can be removed with nitric acid HNO3 max concentration 1 5 max temp 65 C Mixture for 1 5 concentration 2 4 Itr HNO3 62 per 100 Itr water Nitric acid also has an affective build up effect on the passivation film of stainless steel CAUTION Nitric acid and Sodium Hydroxide may cause injury to exposed skin eyes and mucous membranes Use of protective eyewear and gloves is strongly recommended 7 3 Maintenance of the heat exchanger Time interval once a year as a minimum Check temperatures and flows against commissioning data e Check general condition and look for any signs of leakage
4. to the plate package e The pipe work needs to be thoroughly cleaned and flushed before connecting up to the heat exchanger e Always install vents on both sides of the heat exchanger Note For proper venting the vents should be fitted on the highest point in the direction of the flow of the medium preferably on an air vessel To enable the heat exchanger to be opened when necessary shut off valves should be provided in all connections Make sure that the pipe work connected to the heat exchanger is secured against pressure peaks surges and temperature shocks 6 COMMISSIONING OPERATION 6 1 Commissioning and pre checks Commissioning may only be done by staff specially trained for the job or by SONDEX commissioning engineers Control maintenance and repair of the installation may only be done by authorized trained and properly instructed staff Maintenance and cleaning may only be done with a heat exchanger cooled to under 40 C and shut down Check if all connections are fitted correctly see also 5 3 Check the pressures and temperatures of the media and make sure that these are not more than the values specified on the name plate Cause of the many pressure holding weldings it is important to heat up the heat exchanger slowly The heating up time may not exceed 10 C 15 minutes when the heat exchanger has exceeded 50 C Working pressure is to be achieved gradually max 1 bar min It is e
5. Temperature Min C Max C Max Working Pressure bar bar Volume Ltr Ltr Important 1 The starting of the SAW must be done without shocks and against colsed valves 2 Max working pressure may not be exceeded at any time FIG 1 A 4 2 Correct operation This user manual provides information and instructions for correct and safe operation of the unit Many accidents are caused by incorrect use It is essential that you study the instructions carefully and above all ensure the availability to those who install maintain and operate the heat exchanger on a daily basis This manual is of no value if it is not available at the time when your staff needs it If a problem occurs with your SONDEX Heat Exchanger which is beyond the scope of this manual do not hesitate to contact us The installation should not be put into operation before all indistinctnesses have been solved To avoid injuries and damages follow the instructions and local applicable safety regulations Also take the necessary protective measures depending on the nature of your process or circumstances related to it at your plant Please note that our plate type heat exchangers are especially designed and built for the operating conditions pressures temperatures capacities and type of fluids provided by the customer Sudden pressure peaks beyond the normal operating pressure or pressure surges which can occur during starting up or s
6. at exchanger is dirty e Clean the heat exchanger The connections have been interchanged Redo the pipe work Flow larger the the design flow e Adjust the flow Channels in plate s blocked e Flush clean Too high pressure drop Incorrect measurements e Check the pressure indicator Medium deviating from the design e Addition of for instance anti freeze will increase the pressure drop Air in the system e De aerate the pipe system e Check the pipe work for possible air traps Sondex A S Head Office Jernet 9 DK 6000 Kolding Denmark Tel 45 76 306 100 Fax 1 45 75 538 968 Fax 2 45 75 505 019 info sondex dk www sondex net
7. e Wipe clean all painted parts and check surfaces for signs of damage touch up if necessary e Check bolts and bars for rust and clean Lightly coat threaded parts with molybdenum grease or a corrosion inhibitor ensure that no grease etc falls onto the plate gaskets 8 PROBLEM SOLVING If you have problems with your heat exchanger in most cases these can be solved by your own personnel Please find below a summary of possible problems as well as possible causes and solutions A condition for the continuous proper functioning of your heat exchanger is in strict compliance with the permissible values for pressure and temperature mentioned on the name plate Exceeding these values even as short lasting pressure peaks will cause damage to the unit and be the cause of problems To avoid costly repairs we advise you to have the installation work and maintenance carried out by properly trained personnel You can also contact relevant SONDEX Sales Office Problem Possible Cause Possible Solution Leakage At the connections e Check the flange gasket if fitted e Check the O ring e Fit the pipes tension free Mixing of primary and secondary circuit e Please contact Sondex Insufficient capacity Air in the system e De aerate the pipe system e Check the pipe work for possible air traps The operating conditions deviate from the specification e Adjust the operating conditions The he
8. ment If you are A picture A Never lift the heat exchanger by using the connections or studs around them Attention ALWAYS Use the lifting eyes if fitted Attach the straps to the clamping bolts NEVER Lift using the connections Storage Should it be necessary to store the heat exchanger for a longer period 1 month or more certain precautions should be taken in order to prevent unnecessary damage to the equipment Preferably the heat exchanger should be stored inside in a room with a temperature around 15 to 20 C and a humidity of max 70 If this is not possible place the heat exchanger in a wooden box which is provided with a lining on the inside against penetration of moisture 5 3 Installing the pipe connections Depending on the type the SONDEX plate type heat exchanger will be provided with flanges couplings threaded pipes etc When connecting the pipe system to the heat exchanger make sure that no stress or strain is imposed by the pipe system on to the heat exchanger We advise you of the following e Heavy pipe work needs to be supported This will prevent heavy forces on the heat exchanger e Always install flexible connections to prevent vibrations on the heat exchanger These flexible connections also prevent expansion of the pipe work caused by temperature influence onto the heat exchanger These flexible connections need to be fitted in a longitudinal direction
9. nt bar eidacian tan a aes bal eheadades bas ebauestan4 7 2 Some cleaning detergents oon eeen en eere en eeen 7 4 Maintenance of the heat exchanger oaeen on eee eeen eeen PROBLEM SOLVING NN DO DO U U W 10 10 11 11 12 12 12 12 1 FOREWORD This manual is a guide for installation commissioning and maintenance of SAW plate type heat exchangers supplied by SONDEX It is meant for those who are responsible for the installation the use and maintenance of the heat exchangers We recommend that you read this manual carefully before commencing any work 2 INTRODUCTION This manual is applicable for all SAW heat exchangers produced and supplied by SONDEX SONDEX can not be held responsible or liable for damage as a result of incorrect installation use and or maintenance of SONDEX plate type heat exchanger as well as not complying with the instructions in this manual Please note that our heat exchangers are specially designed and built for the operating conditions pressures temperatures capacities and type of fluids provided by the customer Sudden pressure peaks beyond the normal operating pressure or pressure surges which can occur during starting up or stopping of the system can severely damage the heat exchanger and should be prevented SONDEX can not be held responsible for any damage as a result of any operation deviating from the original design conditions
10. osed to prevent air being sucked into the system When in operation the conditions should not be changed The max conditions specified on the name plate should not be exceeded 6 3 Shut down for a short period If the heat exchanger has to be shut down for a short period please follow this procedure Slowly close the control valve in the hot circuit whilst maintaining the full flow in the cold circuit e Switch off the hot circuit pump e Cool down the heat exchanger to under 40 C e Slowly close the control valve in the cold circuit e Switch off the cold circuit pump e Close all remaining shut off valves 6 4 Shut down for a long period If the unit is to be taken off line for an extended period of time then the following procedure should be followed Point 6 3 must be followed then e Allow unit to cool down e Drain all circuits Please also see chapter 5 2 Storage G 7 MAINTENANCE 7 1 Clean in place CIP CIP cleaning clean in place by circulating cleaning detergents To use CIP cleaning it is a condition that the scaling on the plates is soluble All materials in the whole circulation system of course have to be resistant to the cleaning detergent We advise you to ask for a confirmation from the supplier of the cleaning detergent that it will not damage the materials in the heat exchanger If the solution requires recirculation select a flow that is as high as possible and certainly
11. ssential that the heat exchanger is not subjected to thermal or mechanical shock as this could lead to premature gasket failure 6 2 Operation Start cold circuit first then the hot circuit Fully vent the system e Close shut off valve fitted between pump and exchanger Fully open valve fitted into return line from the exchanger e Start the circulation pump normally placed by the inlet e Gradually open closed shut off valve between pump and exchanger e Vent system again if necessary Repeat the above for the secondary circuit G When using steam as one of the media Use slow acting steam control valves and open slowly shut off valves Before start up e Ensure that the steam control valve is fully closed e Ensure that the heat exchanger is fully drained of condensate e Start cold circuit first then the steam side Open steam control valve slowly this prevents water hammer of any condensate in the steam line and reduces the pressure thermal shock to the exchanger Ensure that the steam trap is correctly sized to allow full condensate discharge this prevents water clogging inside the exchanger Check for proper operation e Check for pressure pulses in the system caused by the pumps or control valves If found stop operation and rectify Continuous pressure pulses will result in fatigue failure of the heat exchanger e Visually check the unit for leakages e Check that all vents are cl
12. topping of the system can severely damage the heat exchanger and should be prevented SONDEX can not be held responsible for any damage as a result of any operation deviating from the original design conditions If you wish to alter the design conditions please contact us You may only commission the heat exchanger under the modified conditions after inspection and written approval by SONDEX Also the name plate on the heat exchanger will be adapted 4 3 Precautions All potential personal injury hazards are identified by safety alert symbol Bodily harm can be caused by burning as a result of touching the heat exchanger or other parts of the installation e the uncontrolled release of pressurized media with which the danger of burning and other injuries is present contact with chemicals e touching sharp edges of the installation Damage to equipment can be caused by external forces e corrosion e chemical action e erosion material exhaustion e water hammer thermal and or mechanical shock freezing wrong transport lifting C Even after stopping the installation some parts of it can still be hot The heat exchanger may only be used with the fluids specified on the datasheet The hot medium may not flow through the exchanger without the cold medium flowing through This is to prevent damage to the exchanger In case the cold medium is present but does not flow while the hot medium is flowing thro
13. ugh the cold medium will start boiling and the exchanger will be damaged Sudden pressure and temperature changes should be prevented When a heat exchanger filled with water or a water mixture which is not in operation is exposed to temperatures below zero the plates can become deformed If a danger of frost occurs the heat exchanger should be drained completely If the heat exchanger is being used with temperatures above 60 C or with aggressive fluids we advise you cover the heat exchanger with a screen plate to prevent the risk of touching If welding activities have to be carried out near the heat exchanger never use the heat exchanger for earthing the construction work If you have to weld dismantle the connecting flanges and isolate the heat exchanger from the system 4 4 Thermal Design Sondex heat exchangers are designed and calculated according to the newest technology If performance test has to be carried out the exchanger must be totally clean In the Sondex data sheet the nominal capacity and pressure losses are mentioned A 5 INSTALLATION 5 1 Requirements to the installation area It is very important that enough space around the heat exchanger is kept free for servicing of the unit 5 2 Transport lifting and storage to lift the heat exchanger itself straps should be used They should be placed as shown on the WARNING To prevent personal injury always use appropriate hoisting equip
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