CW-5000/5200 Series
<5> Flow alarm and output ports
In order to guarantee the equipment will not be damaged while cooling
water circulation is out of control, CW-5000/5200series chillers possesses an
unique low flow alarm protection.
(1) Flow alarm output ports and the wiring diagram
(2) Flow alarm causes of circulating cooling water and working state
Normal
flow
indicator
Circulating
pump works
properly
Blocked cooling
water
circulation loop
Alarm of water
shortage
Faulted
circulating
pump
ON
OFF
OFF
OFF
Power interruption
Flow
alarm
indicator
OFF
ON
ON
ON
Buzzer
Output ports
H1, H2
Output ports
H1, H3
NOT
RING
DISCONNECTION
BREAKOVER
RING
BREAKOVER DISCONNECTION
RING
BREAKOVER DISCONNECTION
RING
BREAKOVER DISCONNECTION
BREAKOVER DISCONNECTION
Note: The flow alarm is connected to the normally open relay and normally closed
relay contacts, requiring operating current less than 5A, working voltage less
than 300V.
10
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