Moving And Siting The Unit - Carrier 30GX Installation, Operation And Maintenance Instructions

2.2 - Moving and siting the unit

2.2.1 - moving
See chapter 1.1 "Installation safety considerations".
2.2.2 - siting the unit
Always refer to the chapter "Dimensions and clearances"
to confirm that there is adequate space for all connections
and service operations. for the centre of gravity coordinates,
the position of the unit mounting holes, and the weight dis-
tribution points, refer to the certified dimensional drawing
supplied with the unit.
Typical applications of these units are in refrigeration
systems, and they do not require earthquake resistance.
Earthquake resistance has not been verified.
CAUTION: Only use slings at the designated lifting
points which are marked on the unit.
Before siting the unit check that:
• the permitted loading at the site is adequate or that
appropriate strenghtening measures have been taken.
• the unit is installed level on an even surface (maximum
tolerance is 5 mm in both axes).
• there is adequate space above the unit for air flow and
to ensure access to the components.
• the number of support points is adequate and that
they are in the right places.
• the location is not subject to flooding.
• for outdoor installations, where heavy snowfall is likely
and long periods of sub-zero temperatures are normal,
provision has to be made to prevent snow accumulating
by raising the unit above the height of drifts normally
experienced. Baffles may be necessary to deflect strong
winds. They must not restrict air flow into the unit.
CAUTION: Before lifting the unit, check that all casing
panels are securely fixed in place. Lift and set down the
unit with great care. Tilting and jarring can damage the
unit and impair unit operation.
If 30GX units are hoisted with rigging, it is advisable to
protect coils against crushing while a unit is being moved.
Use struts or spreader bars to spread the slings above the
unit. Do not tilt a unit more than 15°.
WARNINg: Never push or lever on any of the enclosure
panels of the unit. Only the base of the unit frame is
designed to withstand such stresses.
Checks before system start-up
Before the start-up of the refrigeration system, the complete
installation, including the refrigeration system must be
verified against the installation drawings, dimensional
drawings, system piping and instrumentation diagrams and
the wiring diagrams.
During the installation test national regulations must be
followed. If no national regulation exists, paragraph 9-5 of
standard EN 378-2 can be used as a guide.
External visual installation checks:
• Compare the complete installation with the refrigera-
tion system and power circuit diagrams.
• Check that all components comply with the design
specifications.
• Check that all safety documents and equipments that
are required by current European standards are
present.
• Verify that all safety and environmental protection
devices and arrangements are in place and comply
with the current European standard.
• Verify that all relevant documents for pressure vessels
(certificates, name plates, files, instruction manuals etc.)
required by the current European standards are present.
• Verify the free passage of access and safety routes.
• Check that ventilation in the plant room is adequate.
• Check that refrigerant detectors are present.
• Verify the instructions and directives to prevent the
deliberate removal of refrigerant gases that are harmful
to the environment.
• Verify the installation of connections.
• Verify the supports and fixing elements (materials,
routing and connection).
• Verify the quality of welds and other joints.
• Check the protection against mechanical damage.
• Check the protection against heat.
• Check the protection of moving parts.
• Verify the accessibility for maintenance or repair and
to check the piping.
• Verify the status of the valves.
• Verify the quality of the thermal insulation and of the
vapour barriers.
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