Flooded type water cooled screw chiller (MIC)
MCAC-CTSM-2018-1
100
If chilled water flow fails, chilled water pump stops after 30s delay; cooling water pump and cooling
tower stops after 60s delay.
If cooling water flow fails, the cooling water pump and cooling tower stops after a 60s delay; the
chilled water pump stops after 600s delay.
Note: The fault can be cleared after power is re-energized and it needs to be confirmed manually,
then when both temperature and time condition gets satisfied, the chiller can restart.
Temperature sensor failure
Entering the chilled water temperature sensor short circuit/open circuit will display the entering
chilled water temperature fault, and the chiller will stop according to the abnormal shutdown
program. After the sensor resets, faults on the screen must be cleared manually; when both
temperature and time conditions are satisfied, the chiller can restart.
Leaving chilled water temperature sensor short circuit/open circuit will display the leaving chilled
water temperature fault, and chiller will stop according to the abnormal shutdown program. After the
sensor resets, faults on the screen must be cleared manually; when both temperature and time
conditions are satisfied, the chiller can restart.
Entering cooling water temperature sensor short circuit/open circuit will display the entering cooling
water temperature fault, and chiller will stop according to abnormal shutdown program. After the
sensor resets, faults on the screen must be cleared manually; when both temperature and time
conditions are satisfied, the chiller can restart.
Leaving cooling water temperature sensor short circuit/open circuit, display leaving cooling water
temperature fault and chiller stops according to abnormal shutdown program. After the sensor reset,
fault on screen must be cleared manually; when both temperature and time condition gets satisfied,
the chiller can restart.
Discharging the temperature sensor short circuit/open circuit will display the discharge temperature
fault, and chiller will stop according to abnormal shutdown program. After the sensor resets, faults
on the screen must be cleared manually; when both temperature and time conditions are satisfied,
the chiller can restart.
Oil temperature sensor short circuit/open circuit will display oil temperature fault, and chiller will stop
according to abnormal shutdown program. After the sensor resets, faults on screen must be cleared
manually; when both temperature and time conditions are satisfied, the chiller can restart.
Over/under voltage
When power supply voltage is less than 90% or more than 110%, the corresponding alarm over
voltage or under voltage will occur. The chiller will stop immediately according to the abnormal
shutdown program. Faults on screen must be cleared manually; when both temperature and time
conditions are satisfied, the chiller can restart.
High/low pressure protection
As alarm as soon as the high-pressure switch trips and will stop the chiller immediately according to
abnormal shutdown program. This is one kind of NC switch that needs to be manually reset via the
