Midea MWSC340A-FB3 - Page 43

Flooded type water cooled screw chiller (PCB Control)
42
- he special parameters
- lert configuration parameters
- Valve parameters
⑤Press UP/DOWN button to select the category, and then press ENTER to enter the first class number
⑥Press UP/DOWN to select parameters to be set, and then press ENTER to move to the parameter
value;
⑦Press UP/DOWN to modify the parameter value;
⑧Press ENTER to save the new parameter values;
⑨Repeat the above 6, 7, 8 step change other parameters;
⑩Press Esc to exit the manufacturer parameter modification program.
Unit type
340,440,540,690,805,890,1080,12
00,1385,1620,1780
Remarks
Setting
parameters
Refrigerant
R134a
Selected based on the
refrigerant type of the unit
Valve
Danfoss ETS250
Sensor S1
4-20 mA; 0-10.0 V
Automatically brought out by
subsequently set parameters
Control mode
shell-and-tube unit
Overheat degree
6
Valve opening upon start
50%
Pre-positioning delay
6
Valve opening in standby state
0
Power supply mode
1
Available values include: (1)
0: 24 V AC (2) 1: 24 V DC;
default value: 0
Check
parameters
Enable manual valve positioning
0
Manually set the valve position
0
Auxiliary control
Invalid
Relay settings
Alarm relay
DI2 settings
Invalid
Variable 1 on the display
Overheat degree
Variable 2 on the display
Valve opened
Sensor S1 alarm management
Valve at a fixed position
Sensor S2 alarm management
Valve at a fixed position
S1: calibration offset
0
S1: calibration gain, 4–20 mA
1
Pressure sensor S1: minimum
value
0
Set based on the actual
sensor
Pressure sensor S1: maximum
value
30
Set based on the actual
sensor
Pressure sensor S1: minimum
value for alarms
0
Set based on the actual
sensor
Pressure sensor S1: maximum
value for alarms
30
Set based on the actual
sensor
Sensor S2
CAREL NTC
Language
English
Measurement unit
°C (K), barg