16
AIR COOLED WATER CHILLERS
– AXIAL FANS
EKWXA/EKWXBA
11.15 207443 Rev104
START UP
• Start up to be performed by qualified technical people.
• Make start-up check list and use similar check up for service and maintenance. Record chilled water inlet
and outlet temperatures and pressures, outdoor air temperature, volts and amps of each compressor and
fan motor, suction and discharge pressure of each compressor.
• Should remind that after four hours of system operation is necessary to clean air filters.
• Observe at least 3 cooling cycle operations.
• Due to the fact that the unit has frequency converters for compressors and fans, it’s essential that the
supply be at a minimum of 300 mA to prevent supply cuts caused by the differential switch.
LCX CONTROL
►
START UP:
►
SHUTDOWN:
•
Check if all wires are well tightened
.
•
Check if all panels are firmly secured with screws
.
•
Verify if there is no refrigerant or oil leakage
.
•
Verify if unit is installed on level
.
•
Verify if there is enough space for service and maintenance
.
• Check if drain holes in unit base are not blocked.
• Check if the cranckcase heater of each compressor has been energized at least 24 hours before unit start up.
• Check if air filters are clean and correctly mounted.
• Check all grills, air diffusers, air ducts and flexible connections.
• Be sure that electrical power source agrees with unit nameplate rating.
•
Fans rotate in the right direction.
BEFORE START
– UP
