Sabroe HXSG Installation Operation and Maintenance Guide

Brand
Sabroe
Model
HXSG
Type
Installation Operation and Maintenance Guide
HXSG
Suction gas superheater
Installation, operation and maintenance manual
Installation, operation and maintenance manual - HXSG suction gas superheater
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Suction gas superheater - HXSG-type
Installation, operation and maintenance manual
Design
In principle, the suction gas superheater is a shell-and-tube heat exchanger with flange and
nozzles welded in the shell. On delivery, the connection is blanked off to protect against mois-
ture and dirt during transport and storage.
Application
The suction gas superheater is built together with the evaporator or, in the suction string, to the
compressor. It superheats the gas from the evaporator in order to decrease the possibility of
liquid or liquid formation in the compressor, which could result in breakdown. Additionally, the
suction gas superheater increases the cooling capacity a little.
Function
The condensate or subcooled liquid from the condenser is used to overheat the steam from
the evaporator. This results in a more efficiently used heating surface inside the evaporator
due to the higher level of subcooling. This increases the evaporator capacity, and the overheat-
ing of the evaporator can be minimised, as the suction gas heat exchanger minimises the risk
of liquid in the compressor.
Length Pass ø19 tube *)
Type DShell (dm) xx number N2+N3 N4+N5 Shell ( l ) Tube ( l ) Weight (kg)
HXSG 1614xx 16 14 08-16 30 50-80 50-80 12 15 120
HXSG 2114xx 21 14 08-16 48 100-125 50-80 25 25 124
HXSG 2120xx 21 20 08-16 48 100-125 50-80 35 30 170
HXSG 2126xx 21 26 08-16 48 100-125 50-80 45 40 220
HXSG 2706xx 27 06 08-16 82 80-150 65-100 20 33 72
HXSG 2714xx 27 14 08-16 82 80-150 65-100 30 35 210
HXSG 2726xx 27 26 08-16 82 80-150 65-100 70 55 330
HXSG 3214xx 32 14 08-16 130 80-150 65-100 42 50 310
HXSG 3220xx 32 20 08-16 130 80-150 65-100 85 80 490
HXSG 4115xx 41 15 08-16 130 80-150 65-100 105 120 380
*) Volume side
*) approx.
N2
N4
N5
N3
20
D
Lg
Inlet
Outlet
Outlet
Inlet
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Suction gas superheater - HXSG-type
Material specification
Description Material specification
Shell
P235GH EN 10216-2 or P235GH EN 10217-2 or P265GH EN 10216-2 or
St 35.8 DIN 17175 or P265GH EN 10217-2 or St 45.8 DIN 17175 or
SA-333 Gr. 6
Tube plate P265GH EN 10028-2
Reducer
P235GH EN 10216-2 or P235GH EN 10217-2 or P265GH EN 10216-2 or
St 35.8 DIN 17175 or P265GH EN 10217-2 or St 45.8 DIN 17175 or
SA-333 Gr. 6
Nozzle P235GH EN 10216-2
Tubes E235+N EN 10305-4 or St 37.4 DIN 1630
Or similar.
Connection
nominal
diameter
Connection
external
diameter
OD
Standard
connection
thickness
DIN 2448
Connection possibilities
DN inch ANSI SCH40
x cut off
ANSI SCH80
y cut off
15 1/2 21.3 2.3 7 11
20 3/4 26.9 2.3 711
25 1 33.7 2.6 8 13
32 1 1/4 42.4 2.6 9 14
40 1 1/2 48.3 2.6 9 15
50 2 60.3 2.9 9 16
65 2 1/2 76.1 2.9 20 22
80 3 88.9 3.2 14 23
100 4 114.3 3.6 15 25
Shipping
The vessel must be blanked off and primed on delivery. The primer is not intended for outdoor
storage. If the vessel is not put into immediate service, take precautions against corrosion or
contamination.
Only lift the vessel when it is empty, and make sure it is not subjected to strokes or bumps dur-
ing transport. When lifting the vessel before it is built into the unit, always use straps around
the shell.
The weight is stated in the technical data.
A shipping description can be made when the vessel is built together with the unit.
Temporary seal cap.
OD
Cut off = Standard marking line
X Cut off = SCH 40
Y Cut off = SCH 80
Std. thickness
DIN 2448
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Suction gas superheater - HXSG-type
Installation
The site and personal protection must be in accordance with EN 378-3 or national
requirements.
Check the suction gas superheater immediately upon receipt for any damage occurred during
transport. If the suction gas superheater is damaged, it must not be installed and started.
When placing the suction gas superheater, make sure there is enough space for inspection,
maintenance, escape and emergency.
Foundations must be sufficiently robust as their purpose is to provide permanent support with-
out settling and to absorb any normal vibrations from outside causes.
This suction gas superheater type is for horizontal installation.
If corrosion, erosion or other weaknesses in the suction gas superheater are found, the suction
gas superheater must be inspected by a qualified authorised third party, who will provide the
necessary permission to continue using it. If repair is requested, competent personnel together
with a qualified third party and Johnson Controls Denmark will carry this out. If permission to
continue using the suction gas superheater is not granted, it must be scrapped.
Gasket connections
Gasket and gasket surface should be thoroughly cleaned and free of scratches and other de-
fects. The gasket should be properly positioned before attempting to retighten bolts. When a
vessel is dismantled for any cause, it must be reassembled with new gaskets. This will prevent
further leaks and/or damage to the gasket-seating surface of the vessel.
Spare parts and replacement parts
Spare parts and replacement parts can be ordered directly from Johnson Controls Denmark.
When ordering parts, please provide the name of the needed part as well as the vessel serial
number, type, size and other information from the name plate.
Start-up and operation
Before start-up, make sure that all connections are tight.
To avoid accidents or personal injury, the person responsible for the plant must make sure that
the operating staff is duly trained and instructed before the refrigeration plant is started. The in-
struction should be based on the unit instruction manuals and should include instructions in
construction, supervision, operation and maintenance of the system as well as the handling of
used refrigerant.
Evacuation and charging with refrigerant must be carried out in accordance with the descrip-
tion in the unit instruction manual.
Before operation, the refrigeration plant must be leak tested and inspected by an authorised
person.
Local safety and health regulations must be observed.
The authorised person makes a certificate which must be kept by the user.
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Environmentally correct removal
The vessel does not contain environmentally damaging material such as asbestos, mercury or
heavy metals.
All parts of the vessel can be re-used after being scrapped.
• Refrigerant and oil must be drained off before destruction
• All steel materials can be used again after remelting
• During the remelting process, the coating will disappear without harming the
environment.
Johnson Controls Denmark ApS
Sabroe Factory
Christian X's Vej 201 ∙ 8270 Højbjerg
Denmark
Phone +45 87 36 70 00
www.sabroe.com
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Sabroe HXSG Installation Operation and Maintenance Guide

Brand
Sabroe
Model
HXSG
Type
Installation Operation and Maintenance Guide
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