Flooded type water cooled screw chiller (PCB Control)
48
Figure 6.5
Startup operation: Press “startup” is not valid if unit is in malfunction state.
Press START button, and confirm in the pop-up window for startup, then unit can start.
If the compressor startup conditions are not satisfied, the unit goes into a pause state after running the
water pump. The interface display "compressor start conditions are not satisfied, please check state
information".
Shutdown operation:
Press the STOP button, pop-up window for shutdown confirmation will display. Press Confirm button,
then unit status display "stop". After the unit is satisfied with the stop condition, it will carry out the
shutdown process.
Standby status: machine is powered on, it will display “standby status” normally.
①
Unit operation: the start-up of the unit is finished.
②
Pause state: Control water temperature to be lower than water temperature of paused state.
The unit enters “pause state” and compressor stops operating. Control water temperature to be
higher than water
temperature of compressor starting, compressor starts and enters “operating
state”.
③
Shutting down
：
the unit enters “shutting down” state when carry out operation of shutdown to
the unit. After shutdown is finished, unit enters “standby state”.
④
Unit protection
：
when the unit appears fault alarm, it enters “unit protection” state, and on the
top of the screen will inform user which unit has malfunction.
Note:
Cooling mode: water temperature of paused state = setting chilled water temperature- temperature
control range. When unit is in paused state, if temperature controlling is higher than compressor starting
