CIAT Ereba He Series, Instruction Manual, Page: 21 / 96

EN-21
EREBA He
Figure 5 : Opening cable knockouts
2.2.4 - 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 wiring diagrams.
For these checks national regulations must
be followed. If the national regulation does
not specify any details, refer to standard ISO
5149 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-410A
and is not nitrogen.
● Compare the complete installation with
the refrigeration system and power circuit
diag rams.
● 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.
2.3 - Water connections
For size and position of the unit water inlet
and outlet connections refer to the certified
dimensional drawings supplied with the unit.
The water pipes must not transmit any radial
or axial force to the heat exchangers nor any
vibration.
The water supply must be analysed and
appropriate filtering, treatment, control
devices, shut-off and bleed valves and
circuits built in, to prevent corrosion (example:
damage to the protection of the tube surface if
the fluid is polluted), fouling and deterioration
of the pump fittings.
Before any start-up verify that the heat
exchange fluid is compatible with the
materials and the water circuit coating.
In case additives or other fluids than those
recommended by the manufacturer are used,
ensure that the fluids are not considered as
a gas.
Recommendations on heat exchange fluids:
● No NH
4+
ammonium ions in the water, they
are very detrimental for copper. This is
one of the most important factors for the
operating life of copper piping. A content of
several tenths of mg/l will badly corrode the
copper over time.
2 - INSTALLATION OF UNIT