2 - PRELIMINARY CHECKS
2.1 - Check equipment received
-
Check that the unit has not been damaged during transport
and that no parts are missing. If the unit has been damaged
or the shipment is incomplete, send a claim to the shipping
company.
-
Compare the name plate data with the order. The name plate
is attached in two places to the unit:
• On one of the unit sides on the outside
• On the control box door on the inside.
-
The unit name plate must include the following information:
• Model number - size
• CE marking
• Serial number
• Year of manufacture and pressure and leak tightness test
date
• Fluid being transported
• Refrigerant used
• Refrigerant charge per circuit
• PS: Min./max. allowable pressure (high and low pressure
side)
• TS: Min./max. allowable temperature (high and low pressure
side)
• Pressure switch cut-out pressure
• Unit leak test pressure
• Voltage, frequency, number of phases
• Maximum current drawn
• Maximum power input
• Unit net weight
-
Confirm that all accessories ordered for on-site installation
have been delivered, are complete and undamaged.
-
The unit must be checked periodically, if necessary removing
the insulation (thermal, acoustic), during its whole operating
life 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 “Maintenance”.
2.2 - Moving and siting the unit
2.2.1 - Moving
See chapter 1.2 - “Installation safety considerations”.
2.2.2 - Siting the unit
The machine must be installed in a place that is not accessible
to the public or protected against access by non-authorised
persons.
In case of extra-high units the machine environment must
permit easy access for maintenance operations.
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 do not require earthquake
resistance. Earthquake resistance has not been verified and
the units are not explosion-proof.
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.
-
if the heat pump is required to operate in temperatures below
0°C it must be raised at least 300 mm from the ground. This
is necessary to avoid ice build-up on the unit chassis and also
to permit correct unit operation in locations where the snow
level may reach this height.
-
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 (see dimensional drawings).
-
the number of support points is adequate and that they are
in the right places.
-
the location is not subject to flooding.
-
Baffles may be necessary to deflect strong winds. They must
not restrict air flow into the unit.
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 TD units are hoisted with rigging, it is advisable to protect coils
against crushing while a unit is being moved. Use struts or a
lifting beam to spread the slings above the unit. Do not tilt a unit
more than 15°.
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.
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.
For these checks 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 transported’ is R407C 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 documents for pressure containers, certificates,
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.
-
Verify the instructions and directives to prevent the deliberate
removal of refrigerant gases.
-
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.
-
Ensure that the ventilation in the machine room is sufficient.
-
Check the refrigerant detectors.
AQUACIAT
CALÉO™
TD
EN-8
