Danfoss Gasketed Heat Exchangers Operating guide

Operating guide

Gasketed Heat Exchangers

Introduction

This user guide is a guide for installation,
commissioning, operation 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 if there is no local country specific
deviation from it (in a whole and/or in a part).

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 fluids)
provided by the customer and stated on the
nameplate.

Sudden pressure peaks within or 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.

Safety alert notices The following must always be observed when

installing or servicing plate heat exchangers:

• Comply with national/local safety regulations

• Ensure that the heat exchanger is
unpressurized and completely drained

• 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/free zing as a result of touching

parts with ex treme temperatures.

• Burning/free zing/poisoning as a result of
uncontrolled release of p ressurized media

• Contact with chemicals

• Touching sharp edges of e.g. plates

Equipment damage caused by:

• Wrong transport/lifting

• Liquid hammering

• External fo rces

• Corrosion

• Chemical action

• Erosion

• Material fatigue

• Thermal and/or mechanical shock

• Freezing

• Blocking of the hea t exchanger due to particl es

© Danfoss | 2020.10 AQ356845617175en-010101 | 1

Operating guide Gasketed Heat Exchangers

Cb

/L

Marking field

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. Additional nameplates can be found elsewhere if specified by the
client and ordered as an option.

On this name plate main technical details of the heat exchanger are specified. Before installation
please make sure that the intended application is compliant with the name plate application data and
use limitations.

SW19A-IG25-40-TMTL38-LIQUID

Liquid/Steam-Liquid/Condenser/Evaporator
38 = % of plates that are „Thermal long“
TL = Thermal long, TK = Thermal short
TM = Thermal mix (pairs TL+TK) – in this case 62% of the plates

consists of TK/TL combination
40 = Number of plates
25 = 25 Bar nominal pressure (6/10/16/25 available)
S = Best frame, with carrier bar and roller. Connection on follower

side possible. Lock – bush on follower side (single sided disassembly

possible)
G = Medium frame, simple carrier bar without roller. Connection on

follower side possible. No lock bush on follower side.

Each heat exchanger comes with a
data list specifying key components
and relevant accessories as per
specific customer order, heat
exchanger dimensions, and an
assembly drawing.

For more detailed technical details
please contact our support team

T = No frame, connection on follower side not possible, only blue

color, no lock bush, no carrier bar
Industrial = painted version / F = food (glass blasted stainless steel)
Gasket type: IF blank = Sonderlock, A = Hang on type A, B = Hang

on type B (rare, mostly sold in US)
Approximate area per plate. (Not all plates are named according to

this rule)
S = Standard plate, SF = Freeflow plate, SW = Semi-welded, SEC =

evaporator, SWC = condenser, A = AHRI certified type

Name plate

(example, may vary)

, e.g. CE, NoBo, ASME U, DNV-GL etc.

Month and year of production

Tag number

Type designation

Serial number

Nominal assembly measure

Min./max design temperature

Dierential pressure

Inlet / outlet connections

Design pressure

Test pressure

Total internal volume

Fluid type

Tag no.

Unit No. 1

Plate heat exchanger type Month and year

S19A-DG16

Serial no. Marking

PHE085370

A-measure nominal (tolerance -1.5%)

141

Min. / Max. design temperature Differential pressure

0 11016

/°

Inlet > Outlet /

Design pressure/bar

Test pressure/bar

Volume

Fluid /

F1

F1

F2

A-measure

F4

F3

Manufactured by Danfoss A/S, 6430 Nordborg, Denmark - Tel. [phone]

09-2020

This product fulfils PED
requirements for SEP / Art.4,
Sec.3.

mm

Hot side

F1 > F4

16

20

15,0

Water

B1

B2

B4

Do not exceed above values at any time.

B3

Please read instruction manual before
installation, operation and maintenance.

MADE IN DENMARK

/

Cold side

F3 > F2

16

20

15,0

Water

MM-YYYY

ar

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Operating guide Gasketed Heat Exchangers

Name plate

(example, may vary)
(continuous)

SONDEX A/S

Plate heat
exchanger Type

Serial No

Nominal
capacity [k/w]

Assembly measure min. [mm]

Max working
pressure [Bar]

Max di󰀨erential pressure [Bar]

Volume Product
side [ltr]

Working temp.
min. [°C]

Product / Medium Product / Medium

IMPORTANT:

1) The plate heat exchanger must not be
assembled under the stated minimum assembling
measure. Please contact your SONDEX A/S
distributor if the heat exchanger is leaking when
tightened to the minimum measurement.

2) The starting up must be done without schocks
and against closed valves.

3) Max. working pressure may not be exceeded at
any time.

Build year

Heat surface
[m2]

Flow [l/h]

Max test
pressure [Bar]

Volume Medium
side [ltr]

Working temp.
max. [°C]

SONDEX A/S DK-6000 KOLDING DENMARK

Design: Gasketed heat
exchanger

(may vary)

1

2

3

4

6

5

7

9

10

8

AQ356845617175en-010101 | 3© Danfoss | 2020.10

Operating guide Gasketed Heat Exchangers

Start plate

Left plate

Left plate

Right plate

End plate

Flow arrows shown are only indicative

Design: Gasketed heat
exchanger

(may vary)
(continuous)

1 Roller (for certain types)

Making it easier for service and maintenance to
slide the follower back and forth

2 Carrying bar

Connects and carries the head (frame plate),
plates (plate pack) and follower (pressure plate)

3 Column

Ensures plate pack support usually for mid ad
larger heat exchangers

4 Name Plate

Carries all the information about the heat
exchanger (design temperature, operating
pressure, testing pressure,…)

5 Follower

Back (pressure plate) of the gasketed heat
exchanger where we can connect it to the
pyping system

7 Plate

The plate pack package consists of plates with a
groove along the rim of the plate and around the
ports. The number of plates is, as well as size and
dimension dependant on the thermal output
required.

8 Anchoring brackets

Are used to prevent the heat exchanger’s
movement on the foundation/floor surface or
mouting frames

9 Guiding bar

Connects and keeps in place the plates (plate
pack package) at the lower part of heat
exchanger

10 Tie bolt

Are used to press the plate package together.
Size and number depends on the type of heat
exchanger.

6 Head

Front (frame plate) of gasketed heat exchanger
where we can connect it to the pyping system

Frame

The heat exchanger consists of a frame plate (head), a pressure plate (follower), a carrying bar, a
guiding bar and a column. To all these components we usually refer as a frame.

Single plates

Right (R)/ Left (L) plates

Plates are designed in such a way that they can be used both as right and left plates by alternately
turning them 180°.
On a right plate the flow runs from porthole 2 to 3 or reverse from porthole 3 to 2.On a left plate the
flow runs from porthole 1 to 4 or reverse from porthole 4 to 1.
The opening of the corner portholes is described in a “plate code index”. For instance 1234 means that
all corner portholes are open. Every plate can be identified by the gasket configuration, the plate code
index, and the plate geometry (e.g. thermal short or thermal long geometry).

F1

F4

Connections:
F1 > F4 (Flow 1)
F2 > F3 (Flow 2)

Special gasket
Used for start plate only.
All portholes are gasketed

F2

F3

Standard gasket.

Used on all plates except the first plate

Each plate are rotated 180° relative to the plate before/after

Used on all plates except the first plate

Each plate are rotated 180° relative to the plate before/after

Standard gasket.

Single plates x N

Standard gasket.

Used on all plates except the first plate

Each plate are rotated 180° relative to the plate before/after

Standard gasket.

Used on all plates except the first plate.

Note that the plate are without port holes

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Operating guide Gasketed Heat Exchangers

Design: Gasketed heat
exchanger

(may vary)
(continuous)

Fishbone design

TL plate TK plate

Gaskets

The channel gasket material is carefully selected to match the combination of temperature and
chemical resistance requirements.
The following gasket type are used in Danfoss gasketed plate type heat exchangers:

• D-Lock gaskets

• Sonderlock gaskets

• Hang-on gaskets

• Glued gaskets

If any recommendations are required please contact our representative in your country

AQ356845617175en-010101 | 5© Danfoss | 2020.10