Daikin WCT Series, Руководство по эксплуатации и техническому обслуживанию

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OMM WCT Centrifugal Chillers D-EOMWC01302-16EN - 47/84
Fault Alarms
All fault alarms require a manual reset.
Table 17, Fault Alarm Description
Description Occurs When: Action Taken
Low Evaporator Pressure Evaporator Press < Low Evap Pressure SP Rapid Stop
High Condenser Pressure Cond Press > High Condenser Pressure SP Rapid Stop
Vanes Open No Start
Compressor state = PRELUBE for 30 sec after Prelube
timer expires
Rapid Stop
Low Oil Delta Pressure
(Comp State=PRELUBE, RUN, UNLOAD, or
POSTLUBE)
& Net Oil Press < Low Net Oil Press SP
Rapid Stop
Low Oil Feed Temperature
(Comp State=RUN or UNLOAD) &
Oil Feed temp <
(Evap Saturated Refr Temp + Low Oil Delta
Temperature SP) for > 1 min
Rapid Stop
High Oil Feed Temperature
Temp > High Oil Feed Temperature SP
OR, Sump Temp > Max Sump T Sp > Sump T Delay
Rapid Stop
Low Motor Current I < Motor Current Threshold with Comp. ON for 30 sec Rapid Stop
High Discharge Temperature Temp > High Discharge Temperature SP Rapid Stop
Mechanical High Pressure Digital Input = High Pressure Rapid Stop
High Motor Temperature Digital Input = High Temperature Rapid Stop
Surge High
Surge Temp > Surge Temp SP
Surge Temp Slope > Surge High Slope SP
Rapid Stop
No Starter Transition
Starter Transition Digital Input = No Transition AND
Compressor ON for > 15 seconds
Rapid Stop
Starter Fault
Starter Fault Digital Input = Fault AND Compressor
State = START, PRELUBE, RUN, or UNLOAD
Rapid Stop
Low Oil Pressure Start Compressor State = START for 30 sec Rapid Stop
No Evaporator Water Flow Chilled Water Flow Switch Open Rapid Stop
No Condenser Water Flow Condenser Water Flow Switch Open Rapid Stop
Leaving Evaporator Water
Temperature Sensor Fault
Sensor shorted or open Rapid Stop
Evaporator Pressure Sensor Fault Sensor shorted or open Rapid Stop
Condenser Pressure Sensor Fault Sensor shorted or open Rapid Stop
Suction Temperature Sensor Fault Sensor shorted or open Rapid Stop
Discharge Temperature Sensor
Fault
Sensor shorted or open Rapid Stop
Oil Feed Temperature Sensor
Fault
Sensor shorted or open Rapid Stop
Oil Sump Temperature Sensor
Fault
Sensor shorted or open Rapid Stop
Oil Feed Pressure Sensor Fault Sensor shorted or open Rapid Stop
Oil Sump Pressure Sensor Fault Sensor shorted or open Rapid Stop
Low Lift Pressure
Lift Pressure < SP
AND Enabled, AND Delay
Rapid Stop
Economizer Pressure Sensor Fault Sensor shorted or open Rapid Stop
IGV Position Sensor Failure Calibration Span < SP Rapid Stop
DDC Position Sensor Failure Calibration Span < SP Rapid Stop
Low Discharge Superheat Indication of possible flooded Economizer Shutdown(3)
NOTES :
1. Surge Temperature is the suction temperature minus the leaving chilled water temperature.
2. Shutdown is an Unload state/routine prior to actual shutdown, it is the normal shutdown sequence.
Problem Alarms
The following alarms do not cause compressor shutdown but limit operation of the chiller in some way
as described in the Action Taken column. A limit alarm will trigger the red alarm screen and the digital
output for the optional remote alarm.