S&A CW-6000 - Maintenance Procedures; Routine Cleaning and Safety Precautions

TY-JS-20319-003
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2. Alarm causes and working status table.
Display
Condition
Alarm
code
Buzzer
H1 and H2
H1 and H3
Circulating pump works
properly
open circuit
connected
Ultra-high room temp
E1
Sounds
connected
open circuit
Ultra-high water temp
E2
Sounds
connected
open circuit
Ultra-low water temp
E3
Sounds
connected
open circuit
Room temp sensor failure
（constant temp invalid）
E4
Sounds
connected
open circuit
Water temp sensor failure
E5
Sounds
connected
open circuit
Alarm of water shortage
E6
Sounds
connected
open circuit
Low flow rate /
water flow alarm
E6/E7
Sounds
connected
open circuit
Circulating pump failure
E7
Sounds
connected
open circuit
Chiller power failure
connected
open circuit
Note: The alarm output port is connected with a set of normally open and normally closed contacts
of the relay inside the machine. The working current should be smaller than 3A while the working
voltage should be smaller than 300V.
VII. Maintenance
For equipment maintenance, firstly the machine must be stopped and the power must be
cut off. Wait 3 minutes before starting the maintenance process, otherwise there will be a
risk of electric shock. When the ambient temperature is lower than 2°C, the internal water
must be drained when the machine is shut down for a long time.
Disassemble the dust filter regularly for cleaning and use a compressed air gun to blow off
the dust accumulated in the condenser. (It is recommended to clean it once a week, and
the chiller should not without the dust filter, except for a quick cleaning process.)