9
2 - PRELIMINARY CHECKS
2.1 - Check equipment received
•
Inspect the unit for damage or missing parts. If damage
is detected, or if shipment is incomplete, immediately
file a claim with the shipping company.
•
Confirm that the unit received is the one ordered. The
name plate is attached to the outside right-hand side
of the control box.
•
The unit name plate must include the following
information:
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Version number
-
Model number
-
CE marking
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Serial number
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Year of manufacture and test date
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Fluid being transported
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Refrigerant used and refrigerant class
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Refrigerant charge per circuit
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Containment fluid to be used
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PS: Min./max. allowable pressure (high and low
pressure side)
-
TS: Min./max. allowable temperature (high and
low pressure side)
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Pressure switch cut-out pressures
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Unit leak test pressure
-
Voltage, frequency, number of phases
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Maximum current drawn
-
Maximum power input
-
Unit net weight
•
Confirm that all accessories ordered for on-site
installation have been delivered, and are complete
and undamaged.
The unit must be checked periodically during its whole
operating life - if necessary by removing any thermal or
sound insulation - to ensure that no shocks (handling
accessories, tools etc.) have damaged it. If necessary, the
damaged parts must be repaired or replaced. See also
chapter 11 “Standard maintenance”.
The machine must be installed in a place that is not
accessible to the public or protected against access by
non-authorised persons.
2.2 - Moving and siting the unit
2.2.1 - Moving
See chapter 1.1 “Installation safety considerations”.
CAUTION: Only use slings at the designated lifting
points which are marked on the unit.
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
distribution 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.
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.
CAUTION: Lift and set down the unit with great care.
Tilting and jarring can damage the unit and impair unit
operation.
2.2.3 - 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 the national regulation does not specify any
details, refer to standard EN 378 as follows:
External visual installation checks:
•
Ensure that the machine is charged with refrigerant.
Verify on the unit nameplate that the ‘fluid being
transported’ is R-134a and is not nitrogen.
•
Compare the complete installation with the refrigeration
system and power circuit diagrams.
•
Check that all components comply with the design
specifications.
•
Check that all protection documents and equipment
provided by the manufacturer (dimensional drawings,
P&ID, declarations etc.) to comply with the regulations
are present.
•
Verify that the environmental safety and protection and
devices and arrangements provided by the manufacturer
to comply with the regulations are in place.
•
Verify that all document for pressure containers, certi-
ficates, name plates, files, instruction manuals provided
by the manufacturer to comply with the regulations 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.
•
Check the condition of the insulation of the 400 V
cables.
