S&A CW-7500 - Page 9

CW-7500 Series
9
NOTE:
(1) In parameter setting status, the system runs under original parameters;
(2) Under Constant Temperature control mode (“ F4” set at 0), water
temperature is controlled by “F1”;
(3) Under Intelligent Control mode (“ F4” set at 1), water temperature is
self-adjusting according to ambient temperature. The temperature difference
is controlled by “F2”.
3. Advanced parameters adjustment case
Order
Code
Set Item
Set value in
case 1
Set value in
case 2
Set value in
case 3
T-507 Temp
comptroller
default setting
1
F1
Temperature
setting
28
25
25
2
F2
Temperature
Difference values
-3
-2
3
F3
Cooling
hysteresis
0.5
2.0
1.0
0.8
4
F4
Way of control
1
0
0
0
5
F5
The highest set temp.
31
30
30
35
6
F6
The lowest set temp.
25
5
5
20
7
F7
Ultra-high room temp.alarm
45
45
45
45
8
F8
Ultra-high water temp. alarm
10
5
4
10
9
F9
Ultra-low water temp. alarm
10
10
14
15
10
F10
Temp. alarm delay
5
5
5
5
11
F11
Sensor failure alarm delay
10
10
10
10
12
F12
Water flow detection delay
of machine startup
5
5
5
5
13
F13
Flow alarm delay
2
2
2
2
14
F14
Heating hysteresis
0.8
0.8
0.8
0.8
15
F15
Water pump stop delay
5
5
5
5
16
F16
Startup delay
30
30
30
30
17
F17
Compressor activate
protection
90
90
90
90
18
F18
Turn on setting of phase
sequence protection
/
/
/
/
19
F19
Turn on setting of external
input function
(startup and standby)
off
off
off
off
20
F20
NO and NC setting of external
NC
NC
NC
NC