Flooded type water cooled screw chiller (PCB Control)
45
6.2 Operation part
The control system adopts touch screen, and all the operation is done on the screen directly. Take the
unit with dual compressors and step control as example, the actual display of different product may have
a little difference, but basically the operation is the same.
Welcome page
The first welcome page as the figure 6.1
Figure 6.1
When press Enter button, password keyboard will appear. User input 58806/40828 and press Enter
button to enter the main page.
Indicators explanation on the right are as following:
Yellow indicator is the power indicator. It keeps lighting under normal condition, if it is not light, please
check if the power supply wiring is correct.
Green indicator is the touch screen operation indicator, under normal condition it flashes with low
frequency.
Red indicator is communication indicator, under normal condition it flashes with high frequency, if not,
please check if the communication wire connected with the main control board is connected properly and
tightly.
Main page
Figure 6.2
The main page displays the current status, control mode and operating mode of the unit.
Main
control
board and HMI
program version
number
Clear
Delete
Function
button
Display when
compressor
start condition
is not met
Display
when unit is
fault
