4-7-3. Content of alarm and setting
List of alarm and setting
Purpose Display Contents of alarm Set point
Chilled water
Chilled water temperature is too low. 2.5
o
C(36.5
o
F) or below
freeze protection
Chilled water pump interlock failure
-
Few flow rate of chilled water
50% or below
Cooling water temperature is too low. 24
o
C(75.2
o
F) or below
continues 30 minutes
Cooling water pump operation failure.
-
Refrigerant temperature is too low. 2.0
o
C(35.6
o
F) or below
Crystallization
Cooling water pump interlock failure
-
prevention
Few flow rate of cooling water(option)
50% or below
Generator’s temperature is too high. 105
o
C(221
o
F) or avove
Protection of
High concentration of absorbent
2 times of 65.0%
generator
or above
65.5% or above
Motor protection
No.1 Absorbent pump is overloaded.
Rated current
No.2 Absorbent pump is overloaded.
value or above
Refrigerant pump is overloaded.
Purge pump is overloaded.
Others
Chilled water flow switch failure
-
Cooling cycle failure
*1
Power failure (while operating)
More than 1 hour
*1 Chilled water temp. difference 1.0
o
C(1.8
o
F) or below for 30min. at 85% or above input.
4-11
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