Related Manuals for Flo Fab FFWP Series
Summary of Contents for Flo Fab FFWP Series
- Page 1 SINCE 1981 Heat Exchangers Series FFWP & FFWPDW Operation, Maintenance & Installation Manual www.flofab.com 001-iom-2017-heffwp...
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Page 2: Table Of Contents
In December 2014, Marc Gauvreau, son of the founder, acquired all shares of The company. Flo Fab and is constantly investing in new state of the art innovations new product like the XRI series and Prefab Skid for Hydronic Hearing 8 cooling system, pumping systems. -
Page 3: Plate Heat Exchangers - Working Principle
SINCE 1981 1.0 Plate Heat Exchangers – Working Principle The Flo Fab FFWP gasketed plate heat exchanger consists of formed chevron plates of corrosion resistant metals. Every other plate is reversed so the ridges of the herringbone pattern intersect one another on adjacent plates forming a lattice of contact points. The plates have an elastomer gasket that is contained in a formed groove to seal the fluid between the plates. -
Page 4: Plates
Flo Fab heat exchanger plates are made with two different pressing patterns – one is charac- terized by an obtuse angle giving a high theta plate, the other with an acute angle giving a low-theta plate. -
Page 5: Gaskets
PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 The corrugated chevron pattern is alternated from plate to plate. This gives the plates contact points for pressure resistance and also forms a liquid stream that is subject to extensive tur- bulence resulting in a high heat transfer coefficient, as well as reducing the risk of deposits on the heat transfer surface. -
Page 6: Flow & Plate Arrangement
PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 2.4 Flow and Plate Arrangement The heat transfer plates with gaskets are arranged in an alternating pattern of left hand flow and right hand flow to direct the fluids in an opposing direction within the in the heat exchanger. The completed assembly of all the plates and gaskets is called the “plate pack”. - Page 7 PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 Depending on the number of passes a plate heat exchanger may have, the connection location may vary. Since all of the heat exchangers are parallel or same side flow, all connections for one fluid will be on the right side and the opposing fluid on the left side.
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Page 8: Installation
PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 3.0 Installation 3.1 Lifting The plate heat exchanger shall be lifted by the four lifting holes that are provided ( two in the fixed cover and two in the moveable ). 3.2 Installation The plate heat exchanger is to be mounted vertically on the floor with a level foundation and be strong enough so no settling occurs that can cause a loading strain on the connections. -
Page 9: Piping
The piping connected to the heat exchanger shall be designed and built so that it’s thermal expan- sion and weight do not apply any force to the heat exchanger’s nozzle causing premature failure. Any forces or moments applied to the connections of the heat exchanger must be approved by Flo Fab... - Page 10 PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 The following shows typical connections available on the heat exchangers; Threaded - NPT Threaded - NPT Flanged- Carbon Steel Alloy Nozzle ANSI Studded - ANSI Studded - ANSI Ferrule- Carbon Steel Alloy Lining Quick Disconnect When the heat exchanger has connections on the moveable cover there are special piping •...
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Page 11: Storage
PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 3.4 Storage If the heat exchanger is to be placed in long term storage, the following steps should be taken; • Store heat exchanger in a closed room at 60 to 70 degrees F •... -
Page 12: Operation
PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 4.0 Operation 4.1 general Check that the operating pressures and temperatures do not exceed those stated on the heat exchanger nameplate. Check that all tightening bolts are properly tightened. Be certain the plate pack tightening dimension ( “T” ) matches the nameplate or assembly drawing before pressurizing the heat exchanger. -
Page 13: Shutting Down
PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 4.3 Shutting Down Shutting down should take place slowly; 1) Slowly close the valve between the pump and the inlet connection of the heat heat exchanger for the fluid at the higher pressure and temperature. 2) Turn pump off. -
Page 14: Maintenance
PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 5.0 Maintenance 5.1 Opening the Heat Exchanger The heat exchanger must have been shut down in accordance with the previous section ( 4.3). The heat exchanger must have been shut down in accordance with the previous section ( 4.3). Allow the heat exchanger to stand and cool to room temperature, preferably overnight and Allow the heat exchanger to stand and cool to room temperature, preferably overnight and drain in accordance with the previous section. - Page 15 PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 7) Open the heat exchanger by diagonally loosening tightening bolt pairs. Keep the fixed and moveable cover parallel during opening by loosening each nut in ¼” to ½” increments. This will avoid damage to the heat transfer plates.
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Page 16: Closing The Heat Exchanger
PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 5.2 Closing the Heat Exchanger Prior to installing the heat transfer plates consult the plate arrangement drawing to insure the proper sequencing of the plates. Typical single pass plate arrangement; Starter Plate Low Plate High Plate Low Plate... - Page 17 PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 6) If the plates were diagonally marked prior to their removal, verify the plates are in the proper order before tightening. 6) If the plates are assembled correctly the plate edges will form a honeycomb pattern and If glue- less gaskets are used the external tabs will be alligned.
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Page 18: Gasketing
PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 5.3 gasketing 5.3.1 Glueless or glue free gaskets are provided for most models. These gaskets are replaced as follows; 1) Peel the old gasket off of the plate and make certain all parts of it are totally removed. - Page 19 PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 4) The amount of adhesive required can be estimate as follows; Models: WP10 – WP41 WP45 – WP61 WP80 – WP140 Plate Size: up to 3 sq. ft. up to 7 sq.ft up to 20 sq.ft.
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Page 20: Problem Solving
PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 6.0 Problem Solving The following is a guide for trouble shooting a heat exchanger that may not be performing as expected. If more assistance is required please contact Graham personnel. SYMPTOM : Fluid is leaking between two heat transfer plates and to the outside. CAUSE: A gasket is loose or damaged. - Page 21 PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 SYMPTOM: Fluid is leaking between the first heat transfer plate and the fixed cover or the last plate and the moveable cover. CAUSE: The gasket sealing the heat exchanger heat transfer plate to the cover/connection may have become dislodged, particles could be under the gasket or the gasket sealing sur- face could be damaged or irregular.
- Page 22 PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 SYMPTOM: A fluid is leaking from where the external piping is connected to the heat exchan- ger. CAUSE: Either the gasket sealing the flange to the frame has become loose or damaged or in some cases the alloy nozzle liner or stub end has been damaged due to corrosion or excessive loading.
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Page 23: Cleaning
PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 7.0 Cleaning 7.1 Fouling Types The rate of fouling in a heat exchanger is dependent on the application and local conditions. This will affect the frequency and type of cleaning required. By increasing the velocity or flow through the heat exchanger at regular time intervals, some types of fouling may be minimized. -
Page 24: Cleaning Physically
PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 FOULING TYPE: SEDIMENTARY Metal oxides, corrosion products, silt, alumina and diatomic organisms cause sedimentary fouling. SOLUTION: The scale build up can be removed by either chemically cleaning in place (“CIP”) or by opening the heat exchanger and physically cleaning each heat transfer plate with a soft brush and running water. -
Page 25: Cleaning In Place
PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 4) Apply the cleaning solution to the plates and let stand as necessary. Brush and rinse, if necessary repeat the process. 5) When the final brushing is complete, rinse the plates very well with water and wipe them dry with a clean cloth. - Page 26 PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 Cleaning In Place (CIP) with cleaning agents is recomended for applications where frequent fouling of the heat transfer plates occurs. When the application is extremely corrosive, cleaning in place can prolong the life of the plates. The following is the procedure for cleaning in place;...
- Page 27 PLATE AND FrAME - HEAT ExCHANgErS SINCE 1981 8.0 Flo Fab Inc. Replacement Parts Request Form To: Flo Fab Parts Department Date: Company: Flo Fab Inc. From: Fax: Subject: Replacement Parts Price & Availability Fax: 1-450-621-4995 For best results fax this request to the number shown above. Telephone inquiries can be made...
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