CIAT DYNACIAT LG 080, Инструкция по эксплуатации

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1 - INTRODUCTION
Prior to the initial start-up of the units, the people involved in the
on-site installation, start-up, operation and maintenance of this
unit should be thoroughly familiar with these instructions and the
specific project data for the installation site.
The units are designed to provide a very high level of safety
during installation, start-up, operation and maintenance. They
will provide safe and reliable service when operated within their
application range.
They are designed for an operating life of 15 years by assuming
a 75% utilisation factor; that is approximately 100,000 operating
hours.
This manual provides the necessary information to familiarize
yourself with the control system before performing start-up
procedures. The procedures in this manual are arranged in the
sequence required for machine installation, start-up, operation
and maintenance.
Be sure you understand and follow the procedures and safety
precautions contained in the instructions supplied with the
machine, as well as those listed in this guide.
To find out, if these products comply with European directives
(machine safety, low voltage, electromagnetic compatibility,
equipment under pressure etc.) check the declarations of
conformity for these products.
1.1 - Installation safety considerations
After the unit has been received, when it is ready to be installed
or reinstalled, and before it is started up, it must be inspected
for damage. Check that the refrigerant circuit(s) is (are) intact,
especially that no components or pipes have shifted (e.g.
following a shock). If in doubt, carry out a leak tightness check
and verify with the manufacturer that the circuit integrity has not
been impaired. If damage is detected upon receipt, immediately
file a claim with the shipping company.
Do not remove the skid or the packaging until the unit is in
its final position. These units can be moved with a fork lift
truck, as long as the forks are positioned in the right place
and direction on the unit.
The units can also be lifted with slings, using only the
designated lifting points marked on the unit.
These units are not designed to be lifted from above. Use
slings with the correct capacity, and always follow the lifting
instructions on the certified drawings supplied with the unit.
Safety is only guaranteed, if these instructions are carefully
followed. If this is not the case, there is a risk of material
deterioration and injuries to personnel.
DO NOT COVER ANY PROTECTION DEVICES.
LGN units are provided without a relief valve on the high-
pressure refrigerant circuit and are equipped with
automatically reset pressure switches in accordance with
EN378.
For unit installation and connection to the remote condenser
it is necessary to:
-
Check the applicable air conditioning regulations and
safety standards (e.g. PED and EN378 for the European
Union)
-
Determine which accessories (safety valves, fuses etc.)
are required so that these circuits comply with the
applicable regulations and standards.
If shut-off valves are used on the circuit, ensure that these
valves do not shut off the safety valve for the different
containers that they protect.
The protection devices include the fuse plugs and safety
valves (if used) in the refrigerant or heat transfer medium
circuits. Check if the original protection plugs are still
present at the valve outlets. These plugs are generally made
of plastic and should not be used. If they are still present,
please remove them. Install devices at the valve outlets or
drain piping that prevent the penetration of foreign bodies
(dust, building debris, etc.) and atmospheric agents (water
can form rust or ice). These devices, as well as the drain
piping, must not impair operation and not lead to a pressure
drop that is higher than 10% of the control pressure.
Classification and control
In accordance with the Pressure Equipment Directive and
national usage monitoring regulations in the European
Union the protection devices for these machines are
classified as follows:
Safety
accessories
(1)
Over pressure protection in case
of an external fire
(2)
Refrigerant side
High pressure switch X
External relief valve (3) X
Rupture disk X
Fuse plug X
Heat transfer fluid side
External relief valve (4) (4)
(1) Classified for protection in normal service situations.
(2) Classified for protection in abnormal service situations. These accessories
are sized for fires with a thermal flow of 10kW/m². No combustible matter
should be placed within 6.5 m of the unit.
(3) The instantaneous over-pressure limitation of 10% of the operating pressure
does not apply to this abnormal service situation.
The control pressure can be higher than the operating pressure. In this case
either the design temperature or the high-pressure switch ensures that the
service pressure is not exceeded in normal service situations.
(4) The selection of these discharge valves must be made by the personnel
responsible for completing the hydraulic installation.
Do not remove these valves and fuses, even if the fire risk
is under control for a particular installation. There is no
guarantee that the accessories are re-installed if the
installation is changed or for transport with a gas charge.
All factory-fitted safety valves are lead-sealed to prevent
any calibration change. If the safety valves are factory-fitted
on a reversing valve (change-over), this is equipped with a
valve on each of the two outlets. Only one of the two safety
valves is in operation, the other one is isolated. Never leave
the reversing valve in the intermediate position, i.e. with
both ways open (locate the control element in the stop
position).
If a safety stop is removed for checking or replacement
please ensure that there is always an active safety stop on
each of the reversing valves installed in the unit.
The external safety valves must always be connected to
drain pipes for units installed in a closed room. Refer to the
installation regulations, for example those of European
standard EN 378 and EN 13136.
These pipes must be installed in a way that ensures that
people and property are not exposed to refrigerant leaks.
As the fluids can be diffused in the air, ensure that the outlet
is far away from any building air intake, or that they are
discharged in a quantity that is appropriate for a suitably
absorbing environment.
Periodic check of the safety valves: See paragraph 1.3 -
“Maintenance safety considerations”.
Provide a drain in the drain pipe, close to each safety valve,
to avoid an accumulation of condensate or rain water.
Dynaciat LG/LGN EN-6