Hitecsa EQPL-B 4360 Manual Del Operador página 58

II.2.2 Accessories supplied separately
KTRD - Thermostat with display
KTR – Remote keypad for control at a distance with LCD display and
same functions as the machine. Connection must be made with a 6-
wire telephone cable (maximum distance 50 m) or with
KRJ1220/KRJ1230 accessories. For greater distances up to 200 m, use
an AWG 20/22 shielded cable (4 wires+shield, not supplied) and the
KR200 accessory.
KRJ1220 – Connection cable for KTR (length 20m)
KRJ1230 – Connection cable for KTR (length 30m)
KR200 - KTR remote control Kit (distance between 50 and 200m)
KBE – Ethernet interface for serial communication with other devices
(BACnet IP protocol)
KBM – RS485 interface for serial communication with other devices
(BACnet MS/TP protocol)
KUSB – RS485/USB serial converter (USB cable supplied)
Description and fitting instructions are supplied with each
accessory.
II.2.3 Guide to choosing the MCXHE accessory
The aluminium alloys used in MCHX are the best available. However,
even the best aluminium alloy needs further protection against
corrosion in corrosive environment.
The purpose of this document is to guide our customers in choosing the
MXCHE accessory. To do this, attention is required to the classification
of different environments in relation to pollution and corrosion of the
metal.
II.2.3.1 Types of installation premises
Coastal and marine environments
Coastal and marine environments are characterised by the effects of
the proximity of the sea. The corrosive environment is mainly caused by
the saline sea water and possibly by high humidity. Seal salt can be
spread by wind in forms of drops, mist or fog and cause corrosion due
to the presence of chlorine, even at several kilometres from the
coastline. Marine environments are extremely exposed to chlorine
corrosion.
Below is a table of installation sites constituting an environment with specific features:
Installation site
Power stations
Chemical industries
Bio fuels processing plants
Petrochemical industries
Petrol stations
Airports
Agriculture
Sea air, Ships, offshore
Heavy industry
Steel mill
Food industry
Waste disposal
Purification plants
Direct environment
The direct environment is that generated by emissions directly in the
place of installation or towards the unit. It may only be immediately near
the installation; e.g.: air duct drains, liquids, flues, fuel or chemical
product leaks, de-icer chemical products, weeding with chemical
products, sewage and manure tanks, grinding or welding metal dust,
etc.. The corrosive effects of the direct environment can be hazardous
and are often neglected. For example, food factory ventilation drains
containing chlorine vapours or acids from cleaning processes.
Property
Combustion products
Emissions from industrial processes
Emissions from industrial processes
Oils, Fuels, Emissions from processes
Fuel, Combustion products
Combustion products
Fertilisers, Organic compounds
Sprayed seawater
Carbon dust
Carbon dust
Fat, Air humidity, Detergents
Organic particles in the air
Organic particles in the air
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SECTION II :: INSTALLATION AND MAINTENANCE
Industrial environments
Areas with high industrial density are considered industrial
environments. Industrial environments may be very different depending
on the type of industries present and the levels of emission allowed in
that specific area. A large variety/combination of chemical substances
may be present. In industrial areas, in general, there is an increase in
sulfur, ammonia, chlorides, NOx compounds, metals in air and dust.
These substances are known for corroding metals
Urban environments
Urban environments are highly populated environments. These are
normally polluted by emissions produced by traffic and the heating of
buildings. The degree of pollution in urban environments greatly
depends on the size and traffic of the area
Rural environments
Rural environments are not normally corrosive environments. However,
some types of localised emissions are frequent in rural areas. For
example, ammonia from animal urination, fertilisers and diesel exhaust.
Environment with specific features
The environment with specific features is that near a system within a
range of 100 m. This type of environment is that generated by the
emissions near factories, traffic, power stations, airports, etc.. The
specific environment can be in any of the above types of environments
and can be very different from the environment in general. For example,
a pig farm in a rural area can create a different environment due to the
ammonia emissions from the stables.
Specific environments can be: airports, food processing factories,
chemical factories (petrochemical industry, plastics industry), power
stations, fuel station, biofuel plants, waste-water treatment plants,
animal farms, landfills, etc..
Aggressive substances
SOx, NOx, Chloride, Fluoride
Ammonia, Chloride, NOx, SOx
Ammonia, SOx, NOx
Ammonia, Chloride, NOx, SOx
Leaking of fuel, Chlorides, NOx, SOx
NOx, SOx, Chlorides
SOx, NOx, Ammonia
Chlorides, Sulphides
Sulphides, SOx, NOx
Sulphides, SOx, NOx
Chlorine, Acids, SOx, NOx
Ammonia
Sulphides, Ammonia