Danfoss S19, SW19A-IG Installation, Commissioning And Maintenance
User Guide
Plate Type Heat Exchangers, Single plate & Semi-welded
Installation, Commissioning and Maintenance
www.PHE.danfoss.com
User Guide | Plate Type Heat Exchangers, Single plate & Semi-welded - Installation, Commissioning and Maintenance
Contents
Introduction .............................................................................................................................................................................................................. 3
Safety alert notices ............................................................................................................................................................................................. 3
General .......................................................................................................................................................................................................................... 4
Design: Single plate and Semi-welded .............................................................................................................................................. 6
Frame ................................................................................................................................................................................................................... 6
Single Plates .................................................................................................................................................................................................... 6
Semi-welded plates (plate cassettes) ............................................................................................................................................ 6
Gaskets ................................................................................................................................................................................................................ 6
Description ................................................................................................................................................................................................................. 7
Right (R)/ Left (L) plates ........................................................................................................................................................................... 7
Right and left plates, Single plates .................................................................................................................................................. 7
Storage........................................................................................................................................................................................................................... 8
Installation ................................................................................................................................................................................................................. 8
Transport and lifting .................................................................................................................................................................................. 9
Piping system .........................................................................................................................................................................................................10
Filtration .................................................................................................................................................................................................. 10
Installing the pipe connections.......................................................................................................................................................10
Commissioning .....................................................................................................................................................................................................11
Start-up process .........................................................................................................................................................................................11
Shut-down ................................................................................................................................................................................................................12
Shut-down for a short period ...........................................................................................................................................................12
Shut-down for a long period .............................................................................................................................................................12
Maintenance ...........................................................................................................................................................................................................12
CIP cleaning ...................................................................................................................................................................................................12
Cleaning agents guidance ..................................................................................................................................................................12
Opening the plate heat exchanger ..............................................................................................................................................13
Mechanical/Manual Cleaning ...........................................................................................................................................................14
Plate/Cassette replacement ...............................................................................................................................................................15
Gasket replacement .................................................................................................................................................................................15
Closing the plate heat exchanger ..................................................................................................................................................16
Regular Service of the plate heat exchanger .........................................................................................................................17
Additional service for semi-welded heat exchanger .......................................................................................................17
Troubleshooting ..................................................................................................................................................................................................18
After sales service ...................................................................................................................................................................................... 19
Ordering parts .............................................................................................................................................................................................19
Modications to the heat exchanger ..........................................................................................................................................19
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User Guide | Plate Type Heat Exchangers, Single plate & Semi-welded - Installation, Commissioning and Maintenance
Introduction
Safety alert notices
This user guide is a guide for installation,
commissioning and maintenance of plate type
heat exchangers supplied by Danfoss.
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
user guide carefully before commencing any
work.
This user guide is applicable for all plate type
heat exchangers produced and supplied by
Danfoss.
Danfoss can not be held responsible or liable for
damage as a result of incorrect installation, use
and/or maintenance of Danfoss plate type heat
exchanger or damage caused by as not
complying with the instructions in this user guide.
Please note that our plate type heat exchangers
are specially designed and built for the maximum
design conditions (pressures, temperatures,
capacities and type of uids) provided by the
customer and stated on the nameplate.
The following must always be observed when
installing or servicing plate heat exchangers:
Sudden pressure peaks beyond the maximum
operating pressure (or pressure surges) which
can occur during start-up or stopping of the
system can severely damage the heat exchanger
and should be prevented. Danfoss can not be
held responsible for any damage as a result of
any operation deviating from the original design
conditions.
• Comply with national/local safety regulations
• Ensure that the heat exchanger is
unpressurized
• Ensure that the heat exchanger is cooled down
to a temperature below 40 °C (104 °F)
Warning symbols refer to safety alert notices.
Warning/safety notices should be observed
carefully to prevent:
Personal injury caused by:
• Wrong transport/lifting
• Burning/freezing as a result of touching
parts with extreme temperatures.
• Burning/freezing/poisoning as a result
of uncontrolled release of pressurized
media
• Contact with chemicals
• Touching sharp edges of e.g plates or
cassettes
Equipment damage caused by:
• Wrong transport/lifting
• Liquid hammering
• External forces
• Corrosion
• Chemical action
• Erosion
• Material fatigue
• Thermal and/or mechanical shock
• Freezing
• Blocking of the heat exchanger due to
particles
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User Guide | Plate Type Heat Exchangers, Single plate & Semi-welded - Installation, Commissioning and Maintenance
1727
F1
F4
F1
B1
B2
B4
B3
F1
F4
F1
B1
B2
B4
B3
1727
General Identification of the heat exchanger
All plate type heat exchangers supplied by
Danfoss are provided with a name plate
positioned on the front (head) of the heat
exchanger.
Single plate heat exchanger Nameplate
Month/year of production
Type designation
Serial number
Assembly (A) measure min.
Assembly (A) measure max.
Max. pressure drop
Min./max. working temp.
Inlet - outlet connections
Max. working pressure
Max. allowed test pressure
Total internal volume
Fluids per side
On this plate main technical details of the heat
exchanger are specied.
Before installation please make sure that the
intended application is compliant with the name
plate application data and use limitations.
MADE IN DENMARK
Plate heat exchanger type
S19
Serial No.
IRF76804
A-measure min.
159
A-measure max.
-
Max. dierential pressure
16
Min. working temperature
0
Inlet > outlet
Max. working pressure
Max. test pressure
Volume
Fluid
Month and year
12-2018
Marking
mm
mm
Bar
Max. working temperature
80
°C
Ref. Side
F4 - F1
16 16
/
/
/
/
/
/
Brine side
F3 - F2
20,820,8
23,523,5
WaterWater
MM-Y Y
(*)
°C
Bar
Bar
Ltr.
Semi-welded plate heat exchanger Nameplate
Month/year of production
Type designation
Serial number
Assembly (A) measure nominal
Tolerance -1.5%
Max. pressure drop
Min./max. working temp.
Inlet - outlet connections
Max. working pressure
Max. allowed test pressure
Total internal volume
Fluids per side
F2
A-measure
F3
Manufactured by Danfoss A/S, 6430 Nordborg, Denmark
Plate heat exchanger type
SW19A-IG
Serial No.
76803
A-measure Nominal*
159
Max. dierential pressure
16
Min. working temperature
0 80
Inlet > outlet
Max. working pressure
Max. test pressure
Volume
Fluid
Do not exceed above values at any time.
Please read instruction manual before
installation, operation and maintenance.
mm
Bar
°C °C
Ref. Side
F4 - F1
16
20,8
23,5
NH₃
MADE IN DENMARK
Month and year
02-2019
Marking
Max. working temperature
/
Brine side
/
F3 - F2
/
16
/
20,8
/
23,5
/
PropGlycol
MM-Y Y
(*)
Bar
Bar
Ltr.
A-measure min.:
A-measure Nominal - 1.5%
F2
A-measure
F3
Manufactured by Danfoss A/S, 6430 Nordborg, Denmark
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Fig. 1. Nameplate examples. (*) Danfoss Quality approval confirms PHE has passed leak test procedure
Do not exceed above values at any time.
Please read instruction manual before
installation, operation and maintenance.
User Guide | Plate Type Heat Exchangers, Single plate & Semi-welded - Installation, Commissioning and Maintenance
General
(continued)
Datalist (example)
Drawing (example)
Each heat exchanger comes with a data list
specifying key components and relevant
Customer: Contact person:
Project: E-mail:
HEX Type: SW40A-72-TM Engineer: IR
Unit: 1 (Parallel) Code: – Date: 04-03-2019 16:28:08
Calculated parameters Unit Ref Side Brine Side
Flow Type Co-Current
Load kW 350,00
Inlet temperature °C -7,59 -1,00
Evaporating temperature °C -8,00
SuperHeating K 0,00
Outlet temperature °C -8,00 -5,00
Inlet/Outlet quality 0,000/0,667
Mass flow rate kg/h 1464,4 83899,1
Volumetric flow rate L/min 1346,458
Total pressure drop kPa 5,03 93,71
Pressure drop - In port kPa 0,63 5,20
Total area m 26,60
Surface margin % 8,7
LMTD K 4,48
HTC(Available / Required) W/m-K 3189/2935
Heat flux kW/m 13,158
Abs.Evaporating pressure bar 3,15
Port velocity m/s 0,09(Inlet)/15,22(Outlet) 3,23
Shear stress Pa 5,41 109,07
Properties of fluid Unit Ref Side Brine Side
Fluid Ammonia Ethylene glycol(25,00%)
Liquid viscosity mPa-s 0,1855 3,6207
Liquid density kg/m 649,1 1039,1
Liquid heat capacity kJ/kg-K 4,575 3,755
Liquid thermal conductivity W/m-K 0,583 0,451
Vapor viscosity mPa-s 0,0088
Vapor density kg/m 2,6
Vapor heat capacity kJ/kg-K 2,570
Vapor thermal conductivity W/m-K 0,023
Specification: Unit Ref Side Brine Side
HEX Type: – SW40A-72-TM
Number of plates: – 72
Max.number of plates in current frame:
Grouping: – (35TM)/(36TM)
Plate thickness / material: – 0,5mm / EN1.4301(AISI304)
Main Gasket / Ring Gasket: – NITRIL HT (H) / CHLOROPRENE
Connection: – DN 100 Flange cl. AISI316 PN16 DN 100 Flange cl. AISI316 PN16
Counter Flange – Yes Yes
Frame type / color: – C2L / RAL3020
Certification/Approval type: – PED
Volume: L 26,28 28,7
Weight: kg 253,74
Min. wall temperature °C -7 -6,56
Design Temp. (Max/Min): °C 50/-12
Design Pressure(Max) Ref./Brine: bar 16/16
– 84
accessories as per specic customer order, heat
exchanger dimensions, and an assembly drawing.
Fig. 2. Standard documentation datalist and drawing (examples)
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User Guide | Plate Type Heat Exchangers, Single plate & Semi-welded - Installation, Commissioning and Maintenance
Ro ller
C a rryin g bar
Head
Na m e P la t e
Tie bolt
Guiding bar
Plate /Cassette
Follo wer
Co lumn
Anchoring
bra ck e ts
Design:
Single plate and
Semi-welded
Roller
Carrying bar
Column
Name Plate
Head
Anchoring
brackets
Fig. 3. Construction of generic Semi-welded heat exchanger.
Single Plate construction is identical except plates are not paired (welded) into cassettes.
Frame
The heat exchanger consists of a frame plate
(head), a pressure plate (follower), a carrying bar,
a guiding bar and a column. Tie bolts are used to
The ring gasket material is carefully selected to
match the combination of temperature and
chemical resistance requirements (e.g. NH₃ and
compressor oil on the welded side).
press the plate package together. The size and
number of bolts depend on the type of heat
exchanger.
Gaskets
The following gasket types are used in Danfoss
plate type heat exchangers:
Single Plates
Single plate pack consists of single plates tted
with a ow gasket on each plate to seal the plate
pack. The number of plates, size and dimension
depend on the thermal output required. The
number of plates determines the total heat
• Sonderlock gaskets
• Glued gaskets
• Sonder Snap gaskets (semi-welded plate heat
exchangers, large range)
• Hang-on gaskets (semi-welded plate heat
exchangers)
transfer area (surface).
Semi-welded plates (plate cassettes)
A plate cassette consists of two single ow plates
welded together, creating a sealed ow channel.
The cassettes are tted with two individual
gaskets, a ring gasket and a eld gasket, to seal
the plate pack preventing the intermixing of
media. This gasket design allows the use of
dierent gasket materials for the ring and eld
gaskets respectively for best t to the actual
media and temperature conditions.
Follower
Plate/Cassette
Guiding bar
Tie bolt
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Fig. 4. ”Hang-on” gasket
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