Installation and operation manual
14
EWWD440~850AAYNNO**
Packaged water-cooled water chillers
4PW25558-1B
Operation screen
With this screen you can select remote operation/local operation for
running and stopping the unit. In case of models with 2 temperature
setting option, selection of the operation mode during on the unit
operation, is also available.
Standard model
Models with 2-temperature setting option
Measurement screen
This screen indicates various operation data of the unit.
Indications appear, whether the unit is running or has stopped.
"MEASUREMENT" screen (1/2)
"MEASUREMENT" screen (2/2)
Settings screen
Through this screen you can make various settings including the
chilled water outlet target temperature.
Standard model "SETTING" screen (1/2)
1
With the touch of this button you shift to the menu screen.
2
When you want to perform ON-OFF of the unit by means of an
external signal, select this button in advance.
3
When you want to perform ON-OFF of the unit by means of
operation and stop buttons on the door of the switch box, select
this button.
1
When “LOCAL” is selected, select the operation mode with these
buttons. (Buttons are disabled when “REMOTE” is selected.)
NOTE
For both the standard model and the 2-temperature
setting model
If you stop the unit with the stop button on the door of
the switch box during Run/Stop of the unit by means of
an external signal, the operation mode switches from
"REMOTE" to "LOCAL" automatically. If you want to
continue Run/Stop by means of an external signal, you
need to select "REMOTE" again on this screen.
2
1
3
1
1
NOTE
■
The items in the figure with “1” at the end of the
left column is data for the left compressor.
■
The items in the figure with “2” at the end of the
left column is data for the right compressor.
1
Set the target value of the chilled water outlet temperature.
2
Make settings related to the low load stop.
3
Make setting of the remaining operating time of the pump.
The setting value shall be 360 seconds or more.
4
Make setting of the current demand control.
Compressor operating time and ON-OFF count of
the compressor is indicated individually for No. 1
(Left) and No. 2 (Right).
1
2
3
4