List Of Machine Internal Symbols; Acoustic Data; Procedure For Requesting Support; Machine Identification - Mitsubishi Electric s-MEXT Serie Manual De Instalación, Uso Y Mantenimento

s-MEXT
The oil must be recovered in accordance with current laws.
Do not disperse the oil in the environment.
Prevention of other residual risks
•
the machine contains pressurised refrigerant gas: the pressurised equipment must
not be touched except during maintenance, which must be entrusted to qualified and
authorised personnel
•
connect the utilities to the machine following the indications set out in this manual
and in the symbols on the panels of the machine itself;
•
the water circuit (condensate drain pipe, humidifier) contains harmful substances. Do
not drink from the hydraulic circuit and make sure the material contained in it does
not touch your skin, eyes or clothing.
•
in order to avoid an environmental risk, make sure that any leaking fluid is collected
in suitable devices in accordance with local regulations
•
if a part needs to be dismantled, make sure that it is correctly re-assembled before
starting the unit;
•
when the rules in force require the installation of fire-fighting systems near the
machine, check that these are suitable for extinguishing fires on electrical equipment
and on the lubricating oil of the compressor and the refrigerant, as specified on the
safety data sheets of these fluids (for example, a CO
• keep all lubricants in suitably marked containers
•
do not store inflammable liquids near the unit
• solder or braze only empty pipes after removing all traces of lubricant oil; do not use
flames or other heat sources in the vicinity of pipes containing refrigerant fluid
• do not use naked flames near the machine;
•
the machinery must be installed in structures protected against atmospheric
discharge according to the applicable laws and technical standards
•
do not bend or hit pipes containing pressurised fluids
• it is not permitted to walk or rest other objects on the machines
•
the user is responsible for overall evaluation of the risk of fire in the place of
installation (for example, calculation of the fire load)
•
during transport, always secure the unit to the bed of the vehicle to prevent it from
moving about and overturning
•
the machine must be transported according to the regulations in force taking into
account the characteristics of the fluids in the machine and the description of these
on the safety data sheet
•
inappropriate transport can cause damage to the machine and even leaking of the
refrigerant fluid. Before the first start up, check that the cooling circuit is pressurised;
•
the accidental discharge of refrigerant in a closed area can cause a lack of oxygen
and, therefore, the risk of asphyxiation: install the machine in a well ventilated area
according to the EN 378-3 standard and the local regulations in force, and refrigerant
detectors whenever required;
•
unless arranged otherwise with the Manufacturer, the machine be installed in
environments where there is no risk of explosion (SAFE AREA)
1.1.6

LIST OF MACHINE INTERNAL SYMBOLS

Equipment
Danger of burns
under voltage
Earth connection
1.1.7

ACOUSTIC DATA

Standard machine acoustic data in full load operating conditions.
In a closed environment, the noise of a sound source reaches the individual in two different
ways:
•
Directly;
•
Reflected by the surrounding walls, floor, ceiling and furniture.
With the same sound source, the noise produced in a closed environment is stronger than
outside. This is because the noise directly produced by the source is amplified as it bounces
around the objects. The shape of the room also affects noise levels.
INTERNAL UNIT
MODEL
SIZE
SOUND LEVEL (1)
On air delivery dB(A)
On air suction UNDER dB(A)
On unit front OVER dB(A)
On unit front UNDER dB(A)
1. Sound pressure level at 1 metre, free field - ISO EN 3744
1.1.8

PROCEDURE FOR REQUESTING SUPPORT

For support, please contact one of the authorised centres (Italy) or our branches/distributors
(outside Italy). When requesting technical support concerning the machine, cite the data on
the identification plate, and the serial number in particular, and describe the conditions of
access and the area around the machine.
In your request, indicate the approximate hours of use and the fault detected. In case of
alarm, indicate the alarm message number.
UM_s-MEXT_01_Z_03_19_ML
extinguisher)
2
Internal moving
components
Check the drain
006 009 013 022 038
F1 F1 F1 F2 F3
60.9 64.9 68.9 67.2 69.7
56.6 60.6 64.6 62.9 53.1
51.6 55.6 59.6 58.0 48.8
46.9 50.8 54.9 53.3 44.4
1.2

MACHINE IDENTIFICATION

1.2.1

NOMENCLATURE

The alphanumerical code of the model of the machine, which is given on the identification
plate, represents precise technical specifications which are indicated in the figure.
Model: s-MEXT DX O 022 S F2
s-MEXT Series identification
INTERNAL UNIT
DX Unit type
DX – direct expansion, air-cooled unit
O Air delivery
O = over – delivery air flow up
U = under – delivery air flow down
022 Model / Cooling capacity (kW) at the nominal conditions
S Refrigerant circuits
S = single
D = double
F2 Construction size
EXTERNAL UNIT:
PUHZ – ZRP Unit type
250 Cooling capacity code
YKA3 Construction size
1.2.2

IDENTIFICATION PLATE

The type of machine is shown on the label on the machine, normally found in the electrical
panel.
The label provides the reference data and all the essential information required to ensure
safe operation.
1.3

STORAGE TEMPERATURE

When stored for a long period of time, the machine must be placed in a protected
environment, at a temperature between -30 °C and 46 °C, without surface condensation
and away from direct sunlight.
1.4

OPERATING RANGE

044
F3
Temperature with
wet bulb - °C
73.7
57.1
52.8
48.4
17
TRANSLATION OF THE ORIGINAL INSTRUCTIONS
Relative humidity - %
Machine
operating
area.
Temperature with dry bulb - °C
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