S&A CW-7500 - Page 10

CW-7500 Series
10
Case 1: cooling water temperature is controlled by intelligent mode.
Requiring water temperature to be between 25℃ to 31℃. When the set water
temperature is 3 ℃ lower than the ambient temperature and ambient
temperature remains steady, the fluctuation will not exceed ±0.5℃. There will
be an alert when water temperature is 10℃ lower or higher than target. (e.g.
when ambient temperature is 30.0 ℃ , cooling water temperature is between
27.5℃ to 26.5℃, if ambient temperature is up to 30.5℃, water temperature
will be between 28.0℃ to 27.0℃.)
Case 2: cooling water temperature is controlled by constant mode. Requiring
water temperature is constant at 28℃, and the fluctuate does not exceed ±2℃.
The ultrahigh water temperature alarm will be on when water temperature is
5 ℃ higher than normal temperature, and the ultralow water temperature
alarm will be on when water temperature is 10 ℃ lower than normal
temperature.
Case 3: cooling water temperature is controlled by constant mode. Requiring
water temperature is constant in 25℃, and the fluctuate does not exceed ±1℃.
The ultrahigh water temperature alarm will be on when water temperature is
higher than 30℃ , and the ultralow water temperature alarmwill be on when
water temperature is lower than 10 ℃ . (No matter what is the ambient
temperature, the cooling water temperature is constant between 24.0℃ and
26.0℃)
4. Failure warning processing mode
When alarm occurs, the failure alarm code will be displayed on the upper right
corner of the LCD screen. In alarming state, the alarm sound could be
suspended by pressing any button, but the alarm display remains until the
alarm condition is eliminated.
input function
21
F21
External input activation delay
0
0
0
0
22
F22
External input standby
activation delay
0
0
0
0
23
F23
Key lock of Chiller On/Off
1
1
1
1
24
F24
Self-starting after being
electrified
off
off
off
off