Flooded type water cooled screw chiller (PCB Control)
50
⑧
Display if the starting temperature is satisfied, when compressor starts, it need to be satisfied that
water temperature is satisfied with “compressor start” is‘
ＹＥＳ
’;
⑨
Display if the delay restart is satisfy, when compressor starts, it need to be satisfied that “delay
restart” is‘
ＮＯ
’;
⑩
Display if the minimum operation time is satisfy, when compressor stops, it need to be satisfy that
“Min. Running Time Elapsed” is‘
ＹＥＳ
’.
Note: when the compressor has oil temperature sensor, it displays that the oil temperature is satisfied
with compressor start. When it has no oil temperature sensor, it displays the remaining time of oil heating.
It depends on the unit
It displays the refrigerant type on the top left of the screen.
To start the unit must meet the following conditions:
①
“Delaying Restart” need to be “NO”, if it is “YES”, the delay time to start the unit is not reached.
②
“Water Temperature Allow Compressor Start” need to be “YES”, if it is “NO”, that means the current
water temperature is not satisfied with the startup condition of compressor.
③
“Oil Temp. Allow Compressor Start” need to be “YES”, if it is “NO”, that means the current oil
temperature is not satisfy with the startup condition of compressor.
Shutdown must meet the following conditions:
“Min. Running Time Elapsed” need to be“YES”, if it is “NO”, the delay time of shutdown is not reached.
1)Status information- display of temperature and pressure
Figure 6.7
2) Status information-input status:
Input status page:
“ON” represents the input point is closed, OFF represents the input point break.
“Compressor overload protection switch”, when the machine is overload, “compressor overload
protection switch” input state switches to “ON” and unit enters fault protection state. Normal state of
compressor overload protection switch is “OFF”, and normal state of rest protections is “ON”.
