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NOTE
Touching any of the items will display a brief
explanation on the item.
"SETTING" screen (1/2) for models with 2-temperature setting
option
"SETTING" screen (2/2)
1
This is a setting on number of compressors in operation during full
load operation.
Normally select "2UNITS".
2
In this field you need to set the compressor that starts first after
power-up of the unit.
"1" is left side viewed compressor from the front of the switch box.
"2" is right side viewed compressor from the front of the switch
box.
If "UNITS TO CONTROL" is set to "1UNIT", only the compressor
selected in this setting operates.
NOTE
Touching any of the items will display a brief explanation
on the item.
How to change settings of "DATE" and "TIME"
1
Touch the time setting. The following screen appears.
2
Scroll through fields in reverse video using the arrow keys.
3
Touch the "CLR" button to erase the current setting. Input the
correct value using the keypad.
EWWD440~850AAYNNO**
Packaged water-cooled water chillers
4PW25558-1B
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1
How to change settings in the touch panel
1
2
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3
4
1
2
Example: You want to set the target temperature to 7.0°C.
1
2
3
4
5
Repeat steps 1~5 to change other settings.
History screen
In this screen you can consult the alarm history and predictive
maintenance history.
History of details as in the "MEASUREMENT" screen of the last 6
minutes is available (per minute).
History menu screen
Touch the "ENT" button to finally confirm that the correct value
has been input.
Touch the "CHANGE" button to enter your modifications into
memory.
Touch the "BACK" button to exit the date and time settings
screen.
Touch the target "SET TEMPERATURE" setting → the keypad
appears.
Touch the "CLR" button to erase the current set point (The set
point indication becomes 0.0).
Enter e.g. "7.0". If an error is committed during input, clear the
figures one by one using the "DEL" button to input the correct
value.
To confirm the correct input, touch the "ENT" button.
(*) Touching the "ENT" button results in confirmation of the
setting change. Be sure that the input is correct before touching
the "ENT" button.
Touch the "CLOSE" button to close the keypad.
1
To consult the history of predictive maintenance.
2
To consult the alarm history.
3
This screen stores the operational data history in case of
abnormalities.
Predictive maintenance history ("WARNINGS")
If harmful operating conditions occur, information about such
conditions is listed in the predictive maintenance history which
pops up.
Indications on predictive maintenance do not lead to unit stop,
but must be looked after carefully.
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5
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2
3
Installation and operation manual
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