EWWP045~06 ECB1~3MUW
Packaged water-cooled water chillers
4PW30041-1A
Operation manual
10
Defining the time delay between unit and pump shutdown
User parameter
c8
allows you to define the time delay between the
unit shutdown and the pump shutdown, more specifically the period
during which the pump will still be active after the unit has been shut
down. The default, limit and step values for the time delay are:
■
Default value
0
min
■
Limit values
0
to
150
min
■
Step value
1
min
To define the time delay, proceed as follows:
1
Enter the list of user parameters.
Parameter code
:d
appears on the display.
2
Select parameter code
c8
using the
A
and/or
Z
key.
3
Press the
R
key to switch to the parameter value.
4
Select the appropriate setting using the
A
and/or
Z
key.
5
Press the
R
key to return to the list of parameter codes.
6
To adjust or to consult other user parameters before saving the
modifications, select another user parameter using the
A
and/
or
Z
key and then repeat from instruction 3 onwards.
7
To save the modifications, press the
E
key. To cancel the
modifications wait approximately 40 seconds.
In the first case, the controller saves the changes, leaves the list
of user parameters and returns to normal operation, displaying
the inlet water temperature.
In the second case, the display starts flashing. Approximately
40
seconds later, the controller leaves the list of user
parameters without saving the modifications. The inlet water
temperature reappears on the display.
Defining the timer threshold for maintenance warning
User parameter
cb
allows you to define a timer threshold (running
hours of the compressor) after which the controller will generate a
maintenance warning or request. The default, limit and step values
for the timer threshold are:
■
Default value
0
hours
■
Limit values
0
to
10
,
000
hours
■
Step value
100
hours
To define the timer threshold, proceed as follows:
1
Enter the list of user parameters.
Parameter code
:d
appears on the display.
2
Select parameter code
cb
using the
A
and/or
Z
key.
3
Press the
R
key to switch to the parameter value.
4
Select the appropriate setting using the
A
and/or
Z
key.
5
Press the
R
key to return to the list of parameter codes.
6
To adjust or to consult other user parameters before saving the
modifications, select another user parameter using the
A
and/
or
Z
key and then repeat from instruction 3 onwards.
7
To save the modifications, press the
E
key. To cancel the
modifications wait approximately 40 seconds.
In the first case, the controller saves the changes, leaves the list
of user parameters and returns to normal operation, displaying
the inlet water temperature.
In the second case, the display starts flashing. Approximately
40
seconds later, the controller leaves the list of user
parameters without saving the modifications. The inlet water
temperature reappears on the display.
Enabling or disabling the buzzer
When an alarm is detected, the buzzer is activated for the period
defined by user parameter
p4
. The default, limit and step values for
the activation period are:
■
Default value
1
min
■
Limit values
0
to
15
min
0
buzzer disabled
15
buzzer active until muted by the user
■
Step value
1
min
To enable the buzzer for a certain period or to disable the buzzer,
proceed as follows:
1
Enter the list of user parameters.
Parameter code
:d
appears on the display.
2
Select parameter code
p4
using the
A
and/or
Z
key.
3
Press the
R
key to switch to the parameter value.
4
Select the appropriate setting using the
A
and/or
Z
key.
5
Press the
R
key to return to the list of parameter codes.
6
To adjust or to consult other user parameters before saving the
modifications, select another user parameter using the
A
and/
or
Z
key and then repeat from instruction 3 onwards.
7
To save the modifications, press the
E
key. To cancel the
modifications wait approximately 40 seconds.
In the first case, the controller saves the changes, leaves the list
of user parameters and returns to normal operation, displaying
the inlet water temperature.
In the second case, the display starts flashing. Approximately
40
seconds later, the controller leaves the list of user
parameters without saving the modifications. The inlet water
temperature reappears on the display.
Selecting local or remote cool/heat control
User parameter
h6
in combination with the remote cool/heat selection
switch (installed by the customer) allows the user to select cooling or
heating mode without using the
I
or
Y
key on the controller.
■
When user parameter
h6
is set to
0
(= No), cooling or heating
mode is determined by means of the controller.
■
When user parameter
h6
is set to
1
(= Yes), cooling or heating
mode is determined by means of the remote switch.
To select local or remote cool/heat control, proceed as follows:
1
Enter the list of user parameters.
Parameter code
:d
appears on the display.
2
Select parameter code
h6
using the
A
and/or
Z
key.
3
Press the
R
key to switch to the parameter value.
4
Select the appropriate setting using the
A
and/or
Z
key.
5
Press the
R
key to return to the list of parameter codes.
6
To adjust or to consult other user parameters before saving the
modifications, select another user parameter using the
A
and/
or
Z
key and then repeat from instruction 3 onwards.
7
To save the modifications, press the
E
key. To cancel the
modifications wait approximately 40 seconds.
In the first case, the controller saves the changes, leaves the list
of user parameters and returns to normal operation, displaying
the inlet water temperature.
In the second case, the display starts flashing. Approximately
40
seconds later, the controller leaves the list of user
parameters without saving the modifications. The inlet water
temperature reappears on the display.
NOTE
If the unit is always working in normal conditions, no
specific maintenance is requested. In this case the
warning function can be disabled by setting parameter
cb
to
0
.
