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3.3 Function

The heat exchanger consists of a pack of corrugated metal plates with
portholes for the input and output of the two separate fluids. The heat transfer
between the two fluids takes place through the plates.

The plate pack is assembled between a frame plate and a pressure plate and
compressed by tightening bolts. The plates are fitted with a gasket which seals
the channel and directs the fluids into alternate channels. The plate
corrugation promotes fluid turbulence and supports the plates against
differential pressure.

Figure 2: Example of a single-pass set up.

200000418-2-EN-GB

16

3 Description

EN

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Содержание Industrial Series

Страница 1: ...Gasketed plate and frame heat exchangers Industrial line M15 TL10 TL15 T20 TS20 T25 MX25 MA30 WideGap 100 WideGap 200 Lit Code 200000418 2 EN GB Instruction Manual ...

Страница 2: ...s 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 or authorized by Alfa Laval Corporate...

Страница 3: ... ovog korisničkog priručnika na poveznici www alfalaval com gphe manuals ili upotrijebite QR kod Magyar Az Ön nyelvére lefordított használati útmutatót letöltheti a www alfalaval com gphe manuals weboldalról vagy használja a QR kódot Italiano Scarica la versione in lingua locale del manuale di istruzioni da www alfalaval com gphe manuals oppure utilizza il codice QR 日本の www alfalaval com gphe manu...

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Страница 5: ...uirements 20 4 3 Lifting 22 4 4 Raising 24 5 Operation 27 5 1 Start up 27 5 2 Unit in operation 29 5 3 Shut down 29 6 Maintenance 31 6 1 Cleaning Non product side 31 6 2 Opening 33 6 2 1 Bolt configuration 33 6 2 2 Opening procedure 34 6 3 Manual cleaning of opened units 36 6 3 1 Deposits removable with water and brush 37 6 3 2 Deposits not removable with water and brush 37 6 4 Closing 38 6 5 Clos...

Страница 6: ...6 7 3 Glued gaskets 44 7 Storage of the heat exchanger 45 7 1 Storage in packing box 45 7 2 Taken out of service 46 ...

Страница 7: ...horization according to local regulations This may include actions such as piping welding and other kind of maintenance For maintenance actions not described in this manual contact your Alfa Laval representative for advice PHE drawings PHE plate heat exchanger drawings mentioned in the manual are the drawings included in the delivery of the heat exchanger Warranty conditions The warranty condition...

Страница 8: ... of wood plastics cardboard boxes and in some cases metal straps Wood and cardboard boxes can be reused recycled or used for energy recovery Plastics should be recycled or burnt at a licensed waste incineration plant Metal straps should be sent for material recycling Maintenance All metal parts should be sent for material recycling Oil and all non metal wear parts must be taken care of in accordan...

Страница 9: ...ur heat exchanger should be used in accordance with the specified configuration of material media types temperatures and pressure for your specific heat exchanger 2 2 Definitions of expressions WARNING Type of hazard WARNING indicates a potentially hazardous situation which if not avoided could result in death or serious injury CAUTION Type of hazard CAUTION indicates a potentially hazardous situa...

Страница 10: ...200000418 2 EN GB 10 2 Safety EN Safety ...

Страница 11: ...ugh the plates The plate pack consists of channel plates end plates gaskets and in some cases transition plates The measurement of the plate pack is the A dimension i e the measurement between frame plate and pressure plate Refer to the PHE drawing 4 Pressure plate Moveable plate that can contain a various number of portholes for the connection of the piping system 5 Guiding bar Keeps the channel ...

Страница 12: ...ngthens the turning plate when needed Optional components Foot Gives stability and is used to secure the heat exchanger with bolts to the foundation Protection sheets Cover the plate pack and protect against leakage of hot or aggressive fluids and the hot plate pack Bolt protection Plastic tubes that protect the threads of the tightening bolts Insulation For applications where the heat exchanger s...

Страница 13: ... heat exchanger during transportation Drip tray Depending on the type of fluid in the heat exchanger and the type of installation a drip tray drainage box may be necessary to avoid injury to personnel and damage to equipment 200000418 2 EN GB 13 Description 3 EN ...

Страница 14: ...hanger is approved according to the pressure vessel code in question The design temperature 10 may exceed the maximum operating temperature 8 for which the gaskets have been selected for If the operating temperatures as specified on the PHE drawing are to be changed the supplier should be consulted 1 Space for logotype 2 Open space 3 Website for service 4 Drawing of possible locations of connectio...

Страница 15: ... OP TEMP FLUID GROUP YEAR OF MANUFACTURING MANUFACTURER ALLOWABLE TEMP MIN MAX TYPE SERIAL NUMBER PT PS Service Year Manufacturer Fluid group Inlet Outlet Allowable press Allowable temp Volume V Manufacturer Serial No Type Max op temp Test pressure date WARNING Min Max PS Min Max TS PT 16 Figure 1 Example of CE metallic name plate to the left and CE sticker label name plate to the right 200000418 ...

Страница 16: ...h the plates The plate pack is assembled between a frame plate and a pressure plate and compressed by tightening bolts The plates are fitted with a gasket which seals the channel and directs the fluids into alternate channels The plate corrugation promotes fluid turbulence and supports the plates against differential pressure Figure 2 Example of a single pass set up 200000418 2 EN GB 16 3 Descript...

Страница 17: ...ning plate 5 Partition plate 3 5 Identification of plate side The A side of the plates symmetric pattern are identified by a stamp with the letter A and the model name at the top of the plate refer to image 1 below Plates with asymmetric pattern has two possible sides for placement of the gaskets The pattern is marked A W for the wide side image 2 and B N for normal side image 3 Plates with WideGa...

Страница 18: ...200000418 2 EN GB 18 3 Description EN ...

Страница 19: ...e pack has the correct measurements Refer to the PHE drawing When connecting the piping system make sure the pipes do not subject the heat exchanger to stress or strain To avoid water hammer do not use fast closing valves Make sure that no air remains inside the heat exchanger Safety valves shall be installed according to current pressure vessel regulations It is recommended that protection sheets...

Страница 20: ...n giving enough support to the frame Elbow To make it easier to disconnect the heat exchanger an elbow should be fitted to the connection in the pressure plate directed upwards or sideways and with another flange located just outside the contour of the heat exchanger Shut off valve To be able to open the heat exchanger shut off valves should be provided in all connections Connection Different type...

Страница 21: ...e pressure plate must be moved Do not use fixed pipes or other parts like feet fasteners etc inside the shaded area Drip tray optional Depending on the type of fluid in the heat exchanger and the type of installation a drip tray drainage box may be necessary to avoid injury to personnel and damage to equipment NOTE Put the drip tray in place before positioning the heat exchanger 200000418 2 EN GB ...

Страница 22: ...f other attachment points or strap load directions than those described are not allowed If the heat exchanger is not supplied with lifting devices from Alfa Laval the corresponding equipment must be selected and the same attachment points must be used The authorized personnel have full responsibility for selecting components and procedures in a safe and correct way Always be careful during the lif...

Страница 23: ...Figure 5 Lifting device for T25 MX25 and MA30 S 200000418 2 EN GB 23 Installation 4 EN ...

Страница 24: ...g enough to be able to rotate the heat exchanger without obstruction Consider especially the space for the support column Always be careful during the raising procedure to avoid damage to the heat exchanger components 1 Place two timber beams on the floor 2 Lift the heat exchanger off the pallet using e g straps 3 Place the heat exchanger on the timber beams 4 Place straps around one bolt on each ...

Страница 25: ...5 Lift the heat exchanger off the timber beams 6 Lower the heat exchanger into a horizontal position and place it on the floor 200000418 2 EN GB 25 Installation 4 EN ...

Страница 26: ...200000418 2 EN GB 26 4 Installation EN ...

Страница 27: ...luded in the system make sure you know which one should be activated first Centrifugal pumps must be started with valves closed and the valves must be operated as smoothly as possible Do not run pumps temporarily empty on the suction side NOTE Adjustments of flow rates should be made slowly in order to avoid the risk of pressure surge water hammer Water hammer is a short lasting pressure peak that...

Страница 28: ...ease the flow rate slowly 5 Open the air vent and start the pump A 6 Open the valve slowly NOTE Avoid rapid temperature changes in the heat exchanger With media temperatures over 100 C slowly increase the temperature preferably at least for one hour 7 When all the air is expelled close the air vent 8 Repeat step 1 on page 27 to step 7 on page 28 for the second media 200000418 2 EN GB 28 5 Operatio...

Страница 29: ...ke sure you know which one should be stopped first 1 Slowly close the valve controlling the flow rate of the pump you are about to stop 2 When the valve is closed stop the pump 3 Repeat step 1 on page 29 and step 2 on page 29 for the other side for the second media 4 If the heat exchanger is shut down for several days or longer it should be drained Draining should also be done if the process is sh...

Страница 30: ...200000418 2 EN GB 30 5 Operation EN ...

Страница 31: ... the tightening bolts cleaned and greased Check that all the tightening bolts are firmly tightened and that the dimension A is correct Refer to the PHE drawing 6 1 Cleaning Non product side The cleaning in place CIP equipment permits cleaning of the heat exchanger without opening it The purpose of cleaning with CIP is as follows Cleaning of fouling and descaling of lime deposits Passivation of cle...

Страница 32: ... for the removal of inorganic scale AlfaDegreaser A non hazardous cleaning agent for the removal of oil grease or wax deposits Also prevents foaming when using Alpacon Descaler AlfaAdd AlfaAdd is a neutral cleaning strengthener designed to be used with AlfaPhos AlfaCaus and Alfa P Scale 0 5 1 vol is added to the total diluted cleaning solution to provide better cleaning results on oily and fatty s...

Страница 33: ...f necessary use proper protective equipment such as safety boots safety gloves and eye protection depending on the type of media in the heat exchanger 6 2 1 Bolt configuration The bolt configuration of the heat exchanger varies between different models The major force of the plate pack is held by the tightening bolts TB To distribute the force evenly over the frame plate and pressure plate locking...

Страница 34: ...system 3 Drain the heat exchanger NOTE Avoid vacuum in the heat exchanger by opening vent valves 4 Remove the protection sheets if any 5 Dismantle pipes from the pressure plate so that the pressure plate are free to move along the carrying bar 6 Inspect the sliding surfaces of the carrying bar and wipe clean and grease 200000418 2 EN GB 34 6 Maintenance EN ...

Страница 35: ...eat exchanger During the opening procedure keep the frame plate and pressure plate parallel Skewing of the pressure plate during opening must not exceed 10 mm 2 turns per bolt across the width and 25 mm 5 turns per bolt vertically Loosen the four tightening bolts 1 2 3 4 diagonally until the plate pack measure is 1 05 A making sure that the frame plate and pressure plate are parallel while opening...

Страница 36: ...ain a small residual amount of liquid after draining Depending on the type of product and type of installation special arrangements e g drainage box may be necessary to avoid injury to personnel and damage to equipment 6 3 Manual cleaning of opened units CAUTION Never use hydrochloric acid with stainless steel plates Water of more than 330 ppm Cl may not be used in the preparation of cleaning solu...

Страница 37: ... from the heat exchanger during cleaning 1 Start cleaning when the heating surface is still wet and the plates are hanging in the frame 2 Remove deposits using a soft brush and running water 3 Rinse with water using a high pressure hose 6 3 2 Deposits not removable with water and brush Plates must be removed from the heat exchanger during cleaning For a choice of cleaning agents refer to Cleaning ...

Страница 38: ...g Gleitmo 800 or its equivalent 3 Attach the gaskets to the plates or check that all gaskets are properly attached Check that all gaskets are correctly positioned in the grooves NOTE If the gasket is wrongly positioned it will show by the fact that it rises out of the gasket groove or that it is positioned outside the groove 4 If the plates have been removed insert them in alternate directions and...

Страница 39: ...en closing A A 3 1 2 4 7 Tighten the four bolts 1 2 3 4 evenly until dimension A has been reached When a pneumatic tightening device is used see table below for maximum torque Measure dimension A during tightening Bolt size Bolt with bearing box Bolt with washer Nm kpm Nm kpm M30 900 90 M39 1300 130 2000 200 M48 2100 210 3300 330 For manual tightening the tightening torque has to be estimated If d...

Страница 40: ...r to Bolt configuration on page 33 1 Check that all the sealing surfaces are clean 2 Brush the threads of the bolts clean using a steel wire brush or the Alfa Laval thread cleaner Lubricate the threads with a thin layer of grease e g Gleitmo 800 or its equivalent 3 Attach the gaskets to the plates or check that all gaskets are properly attached Check that all gaskets are correctly positioned in th...

Страница 41: ...ached NOTE Make sure that the frame plate and the pressure plate are always positioned in parallel within maximum 10 mm 1 5 4 3 6 2 1 5 7 4 3 8 6 2 6 6 Pressure test after maintenance Neither of these processes are allowed unless performed by a person authorized according to local laws and regulations and following applicable standards If no such person is internally available a third party author...

Страница 42: ...ification and pressure test PT of the heat exchanger the local laws and regulations for in service inspection must be respected Example of a rebuilding is that more number of plates are added to the plate pack If there is any uncertainty about the testing procedure of the heat exchanger consult an Alfa Laval representative 6 7 Regasketing The procedures below concern field gaskets ring gaskets and...

Страница 43: ...ad gaskets MX25 and TL15 The Clip ad gasket represents a system with the conventional Clip on fastening around the ports and fastening by means of adhesive tape along the sides of the plates The use of the adhesive tape GC1 is a simple way to obtain secure gasket positioning It is adhered to the gasket groove by means of a special tape gun making it easy to apply the tape exactly where wanted 1 NO...

Страница 44: ... edge of the plate 6 Close the heat exchanger according to Closing on page 38 6 7 3 Glued gaskets Use glue recommended by Alfa Laval Separate gluing instructions will be delivered together with the glue CAUTION Other glues than those recommended can contain chlorides that can damage the plates CAUTION Do not use sharp tools when removing the glued gasket to avoid damage to the plates 200000418 2 E...

Страница 45: ...ger after delivery is known in advance inform Alfa Laval when ordering the heat exchanger to ensure that it will be properly prepared for storage before packing Indoor storage Store inside a room with the temperature between 15 and 20 C 60 70 F and humidity up to 70 For outdoor storage read Outdoor storage on page 45 To prevent damage to the gaskets there should not be any ozone producing equipmen...

Страница 46: ... of service for an extensive period of time longer than one year the risk of leakage when starting up increases To avoid this problem it is recommended to let the gasket rubber rest to regain most of its elasticity 1 If the heat exchanger is not in position follow the instructions in Installation on page 19 2 Note the measurement between frame plate and pressure plate A dimension 3 Remove the feet...

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