Johnson Controls SABROE GHUR 0710 User manual

GHUR intermediate cooler
Installation, operation and maintenance manual
en

Installation, operation and maintenance manual - GHUR intermediate cooler
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GHUR intermediate cooler
Design
GHUR is an open intermediate cooler. It is used in two-stage refrigeration plants for mixing of the
discharge gas from the low-stage side and the two-phase fluid from the high-stage side.
Option: for increased separator effect, a demister can be added.
Function
The low-pressure discharge line and the two-phase line from the high-pressure side, enter the
vessel through the same end cover. The fluids in the two lines are mixed inside in a mixing pipe.
The mixed fluids then enter the shell through a distribution pipe, in which the fluid is separated
from the gas. The gas leaves the intermediate cooler through a suction slot pipe at the top of the
vessel.
The liquid accumulates at the bottom and surges into the receiver. A float expansion valve inside
the receiver leads the liquid to the low-pressure side and keeps the refrigerant charge at a
minimum.

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GHUR intermediate cooler
Dimensions
GHUR-
type
1
Gas
inlet
DN
2
Mixture
inlet
DN
3
Gas
outlet
DN
4
Liquid
outlet
DN
A
mm
B
mm
C
mm
0710 100 40 100 100 396 660 Ø703
0712 100 40 100 100 642.5 665 Ø703
0715 100 40 100 100 704.5 853 Ø703
Shipping
The vessel is primed and delivered with blinded connections.
The primer is not intended for outdoor storage. If the heat exchanger is not to be placed in imme-
diate service, take precautions to prevent rusting or contamination.
The vessel must only be lifted when empty and must not be subject to strokes or bumps during
transport. When lifting the vessel before it is built into the unit, straps around the shell must be
used. The weight appears from the technical data.
When the vessel is built together with the unit, a shipping description can be made.
Installation
The site and personal protection must be in accordance with EN 378-3 or national requirements.
Check the vessel immediately upon receipt for any damage occurred during transport. If the ves-
sel is damaged, it must not be installed and started.
When placing the vessel, 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 without
settling and to absorb any normal vibrations from outside causes.

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GHUR intermediate cooler
Make sure that no dirt or other unknown elements enter the vessel during installation.
Do not remove protective plugs and covers until immediately before installation.
The entire system must be clean before starting the operation. When fitting the tube connections,
make sure that the load from the piping on the connections is kept small and insignificant as the
vessel is not designed to be an anchor point in the piping system. Vibrations must be minimised,
possibly by means of vibration dampers.
Welding must not be carried out on the vessel.
The vessel must be secured against exceeding the allowable pressures and temperatures.
All outer surfaces must have a corrosion resistant surface coating to allow the vessel to be in-
stalled in certain environments without it causing corrosion.
Safety equipment
Before the vessel is put into operation, it must be provided with safety equipment. The manufac-
turer of the refrigeration plant is responsible for the safety equipment as it is not included in the
vessel delivery.
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 con-
struction, 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 description
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.
Bolted connections
Normal relaxing of the gasketed joints may occur in the interval between testing at the manufac-
turer’s and installation on site. Therefore, all external bolted joints may require retightening after
installation and, if necessary, once again when the vessel has reached its operating temperature.
Note that retightening must never be performed during operation.
It is important that all bolted joints are tightened evenly and in a diametrically staggered pattern.
All bolts must be tightened to the same torque using a torque wrench.

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GHUR intermediate cooler
Maintenance
The vessel should be inspected at the inspection intervals stated in the compressor specification.
Only qualified personnel must carry out inspection.
Operating experience will determine how often inspection of the vessel is needed. It depends on
the operating conditions. Johnson Controls Denmark recommends inspection to be carried out in
monthly intervals during the running-in period. After a running-in period of six months, a mainte-
nance plan must be made. Johnson Controls Denmark recommends inspection to be carried out
every third month as a minimum.
Do not disconnect or tighten connections when the equipment is under pressure.
Periodic inspection during the service life of the vessel must meet the requirements of national
legislation or EN 378-2. Correspondingly, a visual inspection of connections, outer surfaces,
bases, the vibration damper and safety equipment must be carried out.
If corrosion, erosion or other weaknesses in the vessel are found, the vessel must be inspected by
a qualified authorised third party, who will provide the necessary permission to continue using it.
If repair is requested, approved personnel together with a qualified third party and Johnson Con-
trols Denmark will carry this out. If permission to continue using the vessel is not granted, it must
be scrapped.
Disassembly for inspection or cleaning
Before disassembly, the user must make sure that the vessel has been depressurised, vented and
drained, neutralised and/or purged of hazardous material.
Gasket connections
Gasket and gasket surface should be thoroughly cleaned and free of scratches and other defects.
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
See unit spare parts.
START

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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 [phone]
www.sabroe.comVersion 2