Salt Water / Sea Water Chillers with Screw Compressors
Sea Water Cooled
ERBAY Salt Water / Sea Water Chillers are designed to provide chilled salt water / sea water leaving temperatures
which are given on capacity tables in our factory carrying out EN ISO 9001:2008 Quality Management System. The
Units are supplied to ready for installation. All connections, oil and refrigerant charge and required tests are made in
our factory.Our units are in conformity with health and safety requirements of following European Union directives and
relevant hormonized standarts.
Machinery Directive (MD) : 2006/42/EC
Low Voltage Directive (LVD) : 2006/95/EC
Electromagnetic Compatibility Directive (EMC) : 2004/108/EC
Pressure Equipment Directive (PED) : 97/23/EC
The capacity of the Units are varying between 111,2 kW and 1987,2 kW and it’s composed of the following parts;
Cooling Compressor: 1 or 2 pieces semi-hermetic compact screw compressors are used according to capacity.
Screw compressors as it’s characteristics can operate without maintenance need for a long time. Maintenance
of the screw compressors are quite simple because of the less amount of the moving parts in it. Screw compressors
are equipped with discharge shut-off valve, check-valve that prevents to return back of the refrigerant from the
discharge line, oil level switch, oil sight glass, oil separator, oil filter, crankcase heater, capacity control solenoids,
vibration dampers,motor protection device and temperature sensors(PTC).
Condenser: Air Cooled condensers are manufactured by pipes and aluminum fins. Current overload, high efficient
direct drive axial fans which have noiseless bearing are mounted on the unit to provide condensation of the
refrigerant.
Salt Water / Sea Water Evaporator: Direct expansion evaporator is manufactured in Shell & Tube form and special
high efficient copper-nickel tubes are fixed to tubesheet holes with tube expander method. It’s allowed to maintenance
and clean up because of the removable tube bundle.Evaporators designed for salt water and sea water. External
surface of evaporators and suction lines are insulated with insulation material with suitable thickness.
Electrical Control Panel: The panel is designed to IP54. To operate the Unit automatically and securely, the
panel is composed of two different section. The first section is power section and the other one is control section.
The panel is equipped with enough number of contactors, thermics,fuses and on-off switchs. The panel and wiring
are in conformity with EN 60204-1 standart.
Microprocessor Control System: Microprocessor control system is used on the Unit. By means of this; entering
and leaving salt/sea water temperatures,refrigerant pressures on the suction and discharge lines, occured superheat
temperature, operating times of compressors, all faults occured on the system and all alarm history can be seen
on the digital screen and also capacity control can be made easily. Besides the operating times of each compressor
is balanced automatically and optimum efficient operation of the Unit is provided.
Components of the Cooling Circuit: To operate the Unit automatically and securely; electronic expansion valve,
drier-filter, sight glass, relief valve, flow-switch and shut-off valves are included.
Salt Water / Sea Water Chillers can be manufactured also with Water Cooled Condenser or Air Cooled Condenser
on request.
