Sensor alarm
Is the sensorshort-circuited?
Entering chilled-water temperature → Check all chiller sensors and contact your
sensor alarm. Carrier service agent.
Entering cooling water temperature
sensor alarm.
Leaving cooling water temperature
sensor alarm.
Cooling water intermediate
temperature sensor alarm.
Condenser temperature sensor alarm.
Refrigerant temperature sensor alarm
(evaporator).
Diluted solution temperature sensor
alarm (absorber outlet).
Leaving chilled-water temperature
sensor alarm.
High-temperature generator
temperature sensor alarm.
Purge tank pressure sensor alarm.
3.8.5 - Action in case of a power failure
Flowchart of actions in case of a power failure
Power failure
occurs.
The chiller stops
completely.
Power failure
Power alarm H-10
returns. is shown on the
data display.
Press the "RUN"
key.
Power failure
Operation alarm on the
restarts. data display
disappears.
Actions to be taken if a power failure occurs
If a power failure occurs, the chiller stops completely without
carrying out a dilution cycle. Special attention should be paid
to the following.
Actions required when a power failure occurs
Operation condition at power failure Action
Occurred during cooling operation, and Immediately contact your Carrier service agent.
power did not return for over an hour Do not restart operation.
Occurred during cooling operation, and Contact Carrier service agent after restarting
power returned in less than an hour operation.
Occurred during purging operation Immediately close the purge valve completely and
turn the purge pump switch on the control panel
off. After the power is restored, restart purging,
and consult your Carrier service agent.
4 - MAINTENANCE
4.1 - Daily maintenance
4.1.1 - Inspection of each chiller component
If you find an abnormal condition, contact your Carrier service
agent:
• Smell of gas or oil leak around the chiller
• Abnormal noise at the start of the burner
• Abnormal noise of absorbent pump and refrigerant pump
For the following items please consult the system manufacturer:
• Cleaning of cooling tower and cooling water line strainer
• Check the condition of the cooling tower
• Check for air leaks in the piping
4.1.2 - Operation data record
Please record the operation data regularly, as this is useful for
troubleshooting and alarm prevention. Show the record to the
Carrier service personnel when they visit you for the service or
the periodic inspection.
On the next page you will find a sample of the operation data
sheet.
NOTE: The chiller automatically
stops for safety reasons when
either the generator temperature
or the chilled-water temperature
sensor has an alarm. It does not
stop when other sensors have
an alarm, but this could cause
control failure. Please contact
your Carrier service agent as
soon as possible.
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