Safety Advice; Unit Identification - Carrier 38RM-N Series Installation, Operation And Maintenance Instructions

Top discharge condensing units air cooled with axial fans
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3 - SAFETY ADVICE

To avoid any risk of accident during installation, commission-
ing or maintenance, it is obligatory to take into consideration
the following specifications for the units: refrigerated circuits
under pressure, refrigerant presence, electrical voltage pres-
ence and implantation place.
Because of all of this, only qualified and experienced person-
nel can perform maintenance tasks or unit repairs.
The technician who involved in indoor module, when
is working in the installation as compact version, to
access to components placed over 2 m high must take
all necessary security measures.
It is required to follow the recommendations and in-
structions in this brochure, the labels, and the specific
instructions.
Compliance with the norms and regulations in effect is
mandatory. It is recommended to consult the compe-
tent authorities regarding the applicable regulations
for users of units or components under pressure. The
characteristics of these units or components are includ-
ed on the plates of characteristics or in the regulatory
documentation provided with the product.
Caution: Before intervening in the unit, verify that the
main power to the unit is cut off. An electric shock
can cause personal damage. The main disconnect
switch is located outside the unit's electrical panel.
The compressor and line surfaces can reach
temperatures above 100ºC causing burns to the body.
In the same fashion, under certain conditions these
surfaces can reach very cold temperatures that can
cause freezing risks.
During any handling, maintenance or service opera-
tions, the technicians involved must be equipped with
safety gloves, glasses, shoes, insulating clothing, etc.
Refrigerant:
Important: These units contain R-410A, a fluorinated greenhouse
gas covered by the Montreal protocol.
All interventions on the refrigerating circuit must be performed
in accordance with applicable legislation. Within the European
Union, it is necessary to observe regulation (EU) No.517/2014,
known F-Gas, over specific fluorinated greenhouse gases.
Ensure that refrigerant is never released to the atmosphere when
the equipment is installed, maintained or sent for disposal.
It is prohibited to deliberately release refrigerant into the atmo-
sphere. The operator must ensure that any refrigerant recovered is
recycled, regenerated or destroyed.
The operator is bound by the obligation to perform periodical
sealing tests on the refrigerating circuit according to the regula-
tion (EU) No.517/2014. Please, consult the frequency of tests in
chapter of "Maintenance". In case of a leak:
- Toxicity: According to EN 378-1, R-410A belongs to the A1/A1 group,
i.e. with high safety both in the mix and also in the case of a leak.
- Although it is not toxic, in case of a leak to atmospheric pressure
the liquid phase evaporates. The resulting vapors are still hazardous
because they are heavier than air and can force the latter out of
the machine rooms. If refrigerant is accidentally released,
ventilate the room with fans.
- Although it is not flammable, keep them away from open
flames (e.g. cigarettes) as temperatures of over 300°C cause
their vapors to break down and form phosgene, hydrogen
fluoride, hydrogen chloride and other toxic compounds.
These compounds may produce severe physiological conse-
quences if accidentally inhaled or swallowed.
- To detect leaks, an electronic leak detector, an ultraviolet lamp
or soapy water must be used. Flame detectors do not help.
- Immediately repair any refrigerant leak, using a recovery
unit specific for R-410A that avoids a possible mixture of
refrigerants and/or oils.

4 - UNIT IDENTIFICATION

Check the unit for any damage or missing components upon
delivery.
Check that the details on the label, the packing and the name
plate match the order. If equipment has been damaged, or
there is a shortfall in delivery, notify accordingly.
All units (outdoor module) bear, legibly and indelibly, a name
plate located in a prime space, as appears in the attached im-
age: Check that this plate matches the correct model.
Important:
The serial number must be used in all
communications regarding the unit.
Markings (name plate, punch marks, labels) must remain
visible. They must not be altered, removed or modified.
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