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Alfa level M3 Instruction Manual

Plate heat exchangers
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Instruction Manual - Plate Heat Exchangers
M3, M6, M10, TS6, T2, T5, T8, TL3, TL6
3490010216-EN 2014-11
Original manual

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Summary of Contents for Alfa level M3

  • Page 1 Instruction Manual - Plate Heat Exchangers M3, M6, M10, TS6, T2, T5, T8, TL3, TL6 3490010216-EN 2014-11 Original manual...

  • Page 3: Table Of Contents

    Table of contents Description ....................Components .................... Name Plate ....................Function ....................Multi-pass ....................Identification of plate side ................Installation ....................Before installation ..................Requirements ................... Lifting ..................... Raising ....................Operation ....................Start-up ....................Unit in operation ..................Shut-down ....................Maintenance ....................
  • Page 4 Preface Preface Note! This manual provides information needed to install, operate NOTE indicates a potentially hazardous situation and carry out maintenance of the Plate Heat Exchanger that, if not avoided, may result in property damage. (PHE). Safety considerations The Plate Heat Exchanger shall be used and maintained PHE drawings in accordance with Alfa Laval’s instructions in this manual.
  • Page 5 Preface Storage in packing box problem it is recommended to let the gasket rubber rest and If storage after delivery of the PHE is known in advance, regain most of its elasticity. inform Alfa Laval when ordering the PHE to ensure that it 1.

  • Page 6: Description

    Description Description Components Main components Frame plate Fixed plate with various number of port holes for connection of the piping system. The carrying and guiding bar is attached to the frame plate. Carrying bar Carries the plate pack and the pressure plate. Plate pack Heat is transferred from one media to the other through the plates.
  • Page 7 Description Connections Pipe connections The Plate Heat Exchanger can be equipped with of fixed pipe connection for different types of attachments such as pipes for welding, threaded pipes or grooved pipes. Stud bolts Threaded stud bolts around the port holes secure the flange connections to the apparatus. Squared loose flange The Squared loose flange is a special flange supplied by Alfa Laval to be used with the customers piping and is attached with four stud bolts.

  • Page 8: Name Plate

    Description Name Plate On the name plate the type of unit, manufacturing number and manufacturing year can be found. Pressure vessel details in accordance with the applicable pressure vessel code are also given. The name plate is fixed to the frame plate, most common, or the pressure plate. The nameplate can be a steel plate or a sticker label.

  • Page 9: Function

    Description Function The Plate Heat Exchanger (PHE) consists of a pack of corrugated metal plates with port holes for input and output for the two separate fluids. The heat transfer between the two fluids will take place through the plates. The plate pack is assembled between a frame plate and a pressure plate and compressed by tightening bolts.

  • Page 10: Multi-Pass

    Description Multi-pass Multi-pass can be created by using turning plates, with 1, 2 or 3 unholed ports. The main purpose is to change the flow direction of one or both fluids. For some units partition plate is required to support the unholed ports in the turning plates. Also transition plate need to be added in the package to prevent media to get in contact with the partition or pressure plate.

  • Page 11: Installation

    Installation Installation Before installation To consider before installation • Before connecting any piping, make sure all foreign objects have been flushed out of the piping system that should be connected to the PHE. • Before start-up check that all tightening bolts are firmly tightened and that the correct measurements of the plate pack, refer to PHE drawing.
  • Page 12 Installation Connection Different types of connections can be used to connect the piping system to the apparatus. Flanged connections can be attached with either pin bolts or headed bolts. Make sure the pipe connections are securely held when working on the pipings. Caution! Turning of the connections will damage the gaskets on the end plate and cause leakage.

  • Page 13: Lifting

    Installation Lifting Straps should be used when lifting the PHE. Place straps according to the picture. Warning! Never lift by the connections or the studs around them. Lifting TS-6 Raising This instruction is valid when raising the PHE after delivery from Alfa Laval. Only use a strap approved for the weight of the PHE.
  • Page 14 Installation Step 3 Place the PHE on the timber beams. Step 4 Place straps around one bolt on each side. Step 5 Lift the PHE off the timber beams. Step 6 Lower the PHE into a horizontal position and place it on the floor. Document ID Language Edition...

  • Page 15: Operation

    Operation Operation Start-up During start-up check that no visible leakages appear from plate pack, valves or piping system. Caution! Before pressurizing the PHE it is important to ensure that the temperature of the PHE is within the temperature range stated in the PHE drawing. Caution! If the temperature of the PHE is below the minimum temperature for the gaskets prior to the service it is recommended to heat up the PHE above this limit to avoid cold leakage.
  • Page 16 Operation Step 4 Increase the flow rate slowly. Step 5 Open the air vent and start the pump. Step 6 Open the valve slowly. Note! Avoid rapid temperature changes in the PHE. With media temperatures over 100 °C, slowly increase the temperature preferably at least for one hour.

  • Page 17: Unit In Operation

    Operation Unit in operation Adjustments of flow rates should be made slowly in order to protect the system against sudden and extreme variations of temperature and pressure. During operation, check that media temperatures and pressures are within the limits stated on the name plate and PHE-drawing.

  • Page 18: Maintenance

    Maintenance Maintenance To keep the PHE in good condition regular maintenance of the component is required. It is recommended to record maintenance of the PHE. The plates needs to be cleaned on a regular basis. The frequency depends on several of factors such as type of media and temperatures.
  • Page 19 Maintenance Cleaning liquids Liquids Description AlfaCaus A strong alkaline liquid, for removing paint, fat, oil and biological deposits. AlfaPhos An acid cleaning liquid for removing metallic oxides, rust, lime and other inorganic scale. Contains repassivation inhibitor AlfaNeutra A strong alkaline liquid for neutralization of AlfaPhos before drainage.

  • Page 20: Opening

    Maintenance Opening To perform manual cleaning it is required to open the PHE to clean the plates. Note! Before opening the PHE check the warranty conditions. If in any doubt, contact an Alfa Laval sales representative. Refer to “Warranty conditions” on page 4 . Warning! If the Plate Heat Exchanger is hot, wait until it has cooled down to about 40°C (104°F).
  • Page 21 Maintenance Step 3 Drain the PHE. Step 4 Remove the protective sheets, if any. Step 5 Dismantle pipes from the pressure plate so that the pressure plate are free to move along the carrying bar. Step 6 Inspect the sliding surfaces of the carrying bar and wipe clean and grease.
  • Page 22 Maintenance Step 9 Loosen and remove the locking bolts, identify according to on page the bolt configuration prior to this step instruction. Note! Brush the threads of the tightening bolts with a steel wire brush and then grease before loosening them. Step 10 Use the tightening bolts to open the PHE.
  • Page 23 Caution! When opening the plate pack of the models M3, T2 and TL3, be careful when moving the pressure plate. Make sure the pressure plate is positioned safely from the end of the carrying bar.

  • Page 24: Manual Cleaning Of Opened Units

    Maintenance 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 for the preparation of cleaning solutions. It is very important that carrying bars and support columns in aluminium are protected against chemicals.
  • Page 25 Maintenance Deposits not removable with water and brush Plates must be removed from the PHE during cleaning. For a choice of cleaning agents, refer to “Cleaning liquids” on page 19. Step 1 Brush with cleaning agent. Step 2 Rinse immediately with water. Note! Long exposure to the cleaning agents can damage the gasket glue.

  • Page 26: Closing

    Maintenance Closing Follow the instructions below to ensure that the PHE will be properly closed. For identifying bolt refer to Bolt configuration on page 20 Step 1 Check that all the sealing surfaces are clean. Step 2 Brush the threads of the bolts clean, using a steel wire brush or the Alfa Laval thread cleaner.
  • Page 27 Maintenance Step 6 Press the plate package together. Position the tightening bolts according to the figure. Note! For TL6-B: Position tightening bolts 1 and 2 (alternatively 3 and 4). Tighten the tightening bolts until the reaction force of the plate package can be noticed. Make sure that the frame and pressure plate are in parallel during the closing procedure (within maximum 10 mm).

  • Page 28: Pressure Test After Maintenance

    Maintenance Step 9 Mount protection sheets (if provided). Step 10 Connect pipes. Step 11 If the PHE does not seal when the measure A has been reached, it can be tightened further to A minus 0.5 %. Note! For TL6-B: When using frame ASME standard! PHE units with pressure vessel code ASME are equipped with top and bottom bolts.

  • Page 29: Regasketing

    Maintenance Regasketing The procedures below regards Field gaskets, Ring gaskets and End gaskets Note! Before removing the old gaskets check how it is attached. Clip-on/ClipGrip Step 1 Open the PHE, refer to on page and remove the plate that is to have a new gasket.
  • Page 30 Maintenance 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. Warning! Do not use sharp tools when removing the glued gasket to avoid damage to the plates. Document ID Language Edition...

This manual is also suitable for:

M6M10Ts6T2T5T8 ... Show all

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