Frick LaZerWeld II User manual

This manual contains installation, operation, and maintenance
instructions. Read thoroughly before beginning installation. Failure
to follow these instructions may result in personal injury or death,
damage to the unit, or incorrect operation.
LaZerWeld II Plate Heat Exchangers
LZWII-2M, LZWII-4B, LZWII-4E, LZWII-6B,
LZWII-8K, LZWII-8B, and LZWII-12M
Check www.FrickCold.com for the latest version of this publication.
Form 190.210-IOM (SEP 2021)
Installation – Operation – Maintenance
File: Service Manual – Section 190
Replaces: 190.210-IOM (FEB 2020)
Distribution: 3, 3a, 3b, 3c

190.210-IOM (SEP 21)
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LazerWeld II Plate Heat Exchanger
Installation - Operation - Maintenance
Indicates an imminently hazardous situation that, if not avoided, results in death or serious
injury.
Indicates a potentially hazardous situation or practice that, if not avoided, results in death or
serious injury.
Safety precaution denitions
Indicates a potentially hazardous situation or practice that, if not avoided, results in damage to
equipment and/or minor injury.
Indicates an operating procedure, practice, etc., or portion thereof that is essential to highlight.
WARNING
CAUTION
DANGER
NOTICE
Table of Contents
General Information
Preface..............................................................................3
Safety considerations........................................................3
Warranty conditions.......................................................... 3
Advice...............................................................................3
Environmental compliance ................................................ 3
Unpacking.....................................................................3
Maintenance................................................................. 3
Scrapping .....................................................................3
Main components.............................................................. 4
Nameplate.........................................................................5
Function ............................................................................5
Identifying the plate side................................................... 6
Installation
Before installing ................................................................ 7
Requirements.................................................................... 7
Space ...........................................................................7
Foundation ...................................................................7
Elbow ...........................................................................7
Shut-off valve...............................................................7
Connections in the pressure plate ................................7
Drip tray (optional) ....................................................... 7
Lifting ...............................................................................7
Raising .............................................................................8
Connecting to the system .................................................9
Operation
Starting the unit ..............................................................11
Operating the unit........................................................... 12
Shutting down the unit.................................................... 12
Maintenance
Preventive maintenance guidelines ................................. 13
Monitor the status of your gaskets............................. 13
Design innovations .....................................................13
Fouling and cleaning................................................... 13
Audit schedule ...............................................................13
Backflushing ...................................................................14
Cleaning-in-place ...........................................................14
Reconditioning at an authorized center .......................... 14
Manual cleaning .............................................................. 14
Opening......................................................................14
Manually cleaning opened units .................................16
Deposits removable with water and brush ................. 16
Deposits not removable with water and brush ..........17
Regasketing .................................................................... 17
Clip-on and clip-grip ..................................................17
Adhesive tape............................................................. 18
Glued gaskets............................................................. 18
Closing ............................................................................18
Maximum tightening torque .......................................20
Pressure testing after maintenance.................................20
Storing the LZWII ............................................................ 20
Storage in packing box...............................................20
Taken out of service...................................................21
Installing after long-term storage...............................21

190.210-IOM (SEP 21)
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LazerWeld II Plate Heat Exchanger
Installation - Operation - Maintenance
General Information
Preface
This manual provides information necessary to install,
operate, and carry out maintenance of the Frick®
LaZerWeld II (LZWII) plate heat exchanger (PHE).
Safety considerations
Use and maintain the LZWII in accordance with Frick
instructions in this manual. Faulty handling of the heat
exchanger may result in serious consequences with inju-
ries to persons or property damage. Frick does not accept
responsibility for any damage or injury resulting from not
following the instructions in this manual.
Use the heat exchanger in accordance with the specied
conguration of material, media types, temperatures, and
pressure for the specic LZWII.
The following models are covered in this manual:
• LZWII-2M
• LZWII-4B
• LZWII-4E
• LZWII-6B
• LZWII-8K
• LZWII-8B
• LZWII-12M
Warranty conditions
The warranty conditions are usually included in the signed
sales contract before the order of the delivered LZWII.
Alternatively, the warranty conditions are included in
the sales offer documentation or with a reference to the
document specifying the valid conditions. If faults occur
during the specied warranty period, always consult your
local Frick Representative for advice.
Report the date when the heat exchanger was put into
operation to the local Frick Representative.
Advice
Consult your local Frick representative for information on
the following:
• New plate pack dimensions if you intend to change the
number of cassettes (twin plates)
• Selection of gasket material if operating temperatures
and pressures are permanently changed, or if another
medium is to be processed in the LZWII
Environmental compliance
Frick endeavours to perform its own operations as cleanly
and efciently as possible, and to take environmental
aspects into consideration when developing, designing,
manufacturing, servicing, and marketing its products.
Unpacking
Packing material consists of wood, plastics, cardboard
boxes and, in some cases, metal straps.
• Wood and cardboard boxes can be reused, recycled, or
used for energy recovery.
• Ensure plastics are recycled or burnt at a licensed
waste incineration plant.
• Send metal straps for material recycling.
Maintenance
• Send all metal parts for material recycling.
• Oil and all non-metal wear parts must be taken care of
in agreement with local regulations.
Scrapping
At end of use, recycle the equipment in accordance with
the relevant, local regulations. Besides the equipment
itself, any hazardous residues from the process liquid must
be considered and dealt with in the correct manner. When
in doubt, or in absence of local regulations, contact the
local Frick sales company.

190.210-IOM (SEP 21)
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LazerWeld II Plate Heat Exchanger
Installation - Operation - Maintenance
Table 1: LZWII main components
Bolt protection Plastic tubes that protect the threads of the tightening bolts.
Carrying bar Carries the plate pack and the pressure plate.
Frame plate Fixed steel plate with a number of port holes for the connection of the piping system. The carrying
and guiding bars are supported by the frame plate.
Guiding bar Keeps the channel plates and the pressure plate in line at their lower end.
Plate pack Heat is transferred from one medium to the other through the plates. The plate pack consists of
semi-welded plates in pairs that form a cassette (twin plate), gaskets, and distance sheets. The mea-
sure of the plate pack is the measurement between the frame plate and pressure plate. Refer to the
submittal drawing for this dimension.
Port holes with stud
bolt connections
Port holes through the frame plate allow the media to enter into or exit from the heat exchanger.
Different types of connections can be used to connect the piping system to the apparatus. Threaded
stud bolts around the port holes secure the connections to the apparatus. The port holes may be
protected against corrosion by metal linings. The LZWII can be equipped with different connection
types. For details, refer to LZWII drawings supplied with product.
Flanged pipe
connection
Illustration of connection type used for LZWII-4B.
Pressure plate Moveable steel plate that can contain a number of port holes for the connection of the piping system.
Covers Used as blind ange or inspection cover at the LZWII port holes.
Supporting column Supports carrying and guiding bars.
Tightening bolts Compress the plate pack between the frame and pressure plate.
Figure 1: LZWII main components
Port hole with stud
bolt connections
Tightening bolts
Frame plate
Distance sheets
Carrying bar
Bolt protection
Supporting column
Pressure plate
Guiding bar
Plate pack
Partition plate
Flanged pipe connection
Main components
The following gure and table details the main
components of the LZWII.

190.210-IOM (SEP 21)
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LazerWeld II Plate Heat Exchanger
Installation - Operation - Maintenance
Nameplate
On the nameplate you can nd the type of unit, manufac-
turing number, and manufacturing year. You can also nd
pressure vessel details in accordance with the applicable
pressure vessel code. The nameplate is most commonly
xed to the frame plate, or the pressure plate.
WARNING
For each unit, the mechanical design pressures and
temperatures are marked on the nameplate. These
must not be exceeded.
The mechanical design pressure and the design tem-
perature as given on the name plate are the values to
which the PHE is approved to the pressure vessel code in
question. The mechanical design temperature may exceed
the maximum operating temperature established for the
gasket material lifetime. If the operating temperatures as
specied on the assembly drawing are to be exceeded,
consult the supplier.
Figure 2: Nameplate
Material No.
FRICK Sales Order No.
Tag No. (Optional)
FOR PARTS, SERVICE AND AFTER MARKET ASSISTANCE
CALL 1-717-762-2121 | www.frickcold.com
Function
The LZWII consists of a set of corrugated metal plates
with port holes for inow and outow of two separate
uids. The plates are arranged as cassettes (twin plates) in
such a way that every second channel is welded, and ev-
ery other channel is gasketed. The heat transfer between
the two uids takes place through the plates. The cas-
sette concept gives rise to two different types of chan-
nel - welded channels used for the aggressive primary
media and gasketed channels used for the non-aggressive
secondary media.
The plate pack is assembled between a frame plate and
a pressure plate and compressed by tightening bolts. The
plates are tted with a gasket that seals the channel and
directs the uids into alternate channels. The plate cor-
rugation promotes uid turbulence and supports the plates
against differential pressure.

190.210-IOM (SEP 21)
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LazerWeld II Plate Heat Exchanger
Installation - Operation - Maintenance
Figure 3: Cassette arrangement forming the plate pack
Identifying the plate side
The A orientation of the cassette is identied by the stamp
with the letter A or the model name, in some cases both,
at the top of the plate. See Figure 4. The separate ring
gaskets always point to the right when the cassette is
oriented as A.
Figure 4: Plate side identication
End cassette II
End single plate
Channel cassettes
End cassette I
End single plate
Gasketed channel
created between
two cassettes
(blue)
Two plates that form
the welded channel
inside the cassette
(red)
Identication stamp Ring gasket

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LazerWeld II Plate Heat Exchanger
Installation
Installation
Before installing
NOTICE
Before start-up, check that all tightening bolts are
rmly tightened and that you use the correct mea-
surements of the plate pack. See LWZWII drawing
and Closing section.
• To avoid water hammer, do not use fast-closing valves.
• Install safety valves according to current pressure ves-
sel regulations.
• If the LZWII surface temperature is expected to be hot
or cold, insulate the heat exchanger.
• Use protective sheets to cover the plate pack.
• For each model, design pressures and temperatures are
marked on the identication plate. These must not be
exceeded.
• Full vacuum conditions apply at start up for refrig-
eration duties to avoid moisture and air in the heat
exchanger.
Requirements
Space
A minimum free space is needed for lifting cassettes in
and out. Refer to the delivered drawing.
Foundation
Install on a at foundation giving enough support to the
frame.
Elbow
To allow easier disconnection of the LZWII, connect an el-
bow to the pressure plate using a ange, directed upwards
or sideways, and with another ange located just outside
the contour of the heat exchanger.
Shut-off valve
In order to open the LZWII, install shut-off valves at all
connections.
Connections in the pressure plate
Ensure the plate pack is tightened to the correct dimen-
sion A before connecting the pipe system. Verify on the
nameplate.
Drip tray (optional)
Depending on the type of uid in the LZWII 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 LZWII
Figure 5: Shut-off valve and elbow location
Lifting
Use straps when lifting the LZWII. Attach the straps as
illustrated in Figure 6 with a minimum angle of 45°.
Position straps as illustrated in Figure 7 to Figure 10.
Figure 6: Lifting straps
WARNING
Never lift by the connectors or studs.
Shut-off valve
Elbow

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LazerWeld II Plate Heat Exchanger
Installation
Figure 7: Lifting device for LZWII-2M and LZWII-4B
Figure 8: Lifting device for LZWII-6B
Figure 9: Lifting device for LZWII-8K and LZWII-8B
Figure 10: Lifting device for LZWII-12M
Raising
This instruction is valid when raising the LZWII after
delivery. The strap is approved for the weight of the heat
exchanger to be used.
CAUTION
The straps are long enough to rotate the PHE without
obstructions. Pay particular attention to the space
required for the support column.
1. Place two timber posts on the oor.
Figure 11: Timber posts
2. Lift the LZWII off the pallet using straps.
Figure 12: LZWII on pallet

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LazerWeld II Plate Heat Exchanger
Installation
3. Position the LZWII on the timber posts.
Figure 13: LZWII on timber posts
4. Place straps around one bolt on each side.
Figure 14: Straps
5. Lift the LZWII off the timber posts.
Figure 15: Lifting LZWII with straps
6. Lower the LZWII onto the oor in a horizontal position.
Figure 16: LZWII, horizontal
Connecting to the system
Before connecting any piping, complete the following:
• Ensure that no foreign objects have been left in the
system that connects to the LZWII.
• Remove the sealing blind covers from the port holes.
When connecting the piping system, complete the follow-
ing steps:
1. Ensure the pipes do not subject the LZWII to stress or
strain.
2. Install a strainer or lter with 0.5 mm to 1.0 mm mesh
size to prevent problems with foreign objects in the
piping system.
NOTICE
Frick suggests installing an external secondary media
inlet strainer with a mesh size of between 0.5 mm to
1.0 mm.

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LazerWeld II Plate Heat Exchanger
Installation
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