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07.17 207443 Rev.105
EKWXA│EKWXBA
AIR-COOLED WATER CHILLERS
AXIAL FANS
OPERATION
START UP
It is necessary to take notes of the air inlet and outlet temperatures to the internal coil, the volts and amps of the compressor and
motor fan, as well as the suction and discharge pressure of each compressor.
It should be remembered that it is necessary to clean the air filters after the first 4 hours of operation.
Observe at least, 3 cooling cycle operations.
Due to the unit equips frequency converters, it is essential that the power is at least 300mA to prevent power cuts caused by the
activation of the circuit breaker.
THERMOSTAT AND CONTROL
MCX06 CONTROL
Programmable controller with LED display, installation in panel. The thermostat consists of a user interface terminal and electronic board
of a single set.
Characteristics:
Isolated power supply, 20/60 VDC
– 24 VAC.
LED display with 2 groups of digits and several icons that show all the desired
information on the same screen.
Operation Mode: 1 compressor, olny cooling and heat pump.
Defrost maneuver by pressure transducers.
Management of the recirculation pump and inertia module.
Time schedule: RTC clock for periodic weekly program management and data
logging.
Parameterizable control, with 3 access levels: user, maintenance and
manufacturer.
Modbus serial communication interface RS-485.
Start up has to be performed by a qualified service person.
Check the following points:
Electrical connections are well tightened.
Panels are firmly secured with screws.
There are no oil or refrigerant leaks.
The unit is correctly leveled.
There is enough space for service and maintenance.
Drainage is not blocked.
Check that the crankcase heater of each compressor is in operation for 24 hours prior to commissioning.
Air filters are cleaned and correctly mounted.
Grilles, air diffusers, air ducts and flexible connections are in good condition.
Electrical power source is in accordance with what is said in the nameplate.
Fans rotate in the right direction.
Reed the User Manual
BEFORE START UP
