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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.
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.
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
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.
EWLP012~065KAW1N
Condenserless water-cooled water chillers
4PW30043-1
buzzer disabled
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 on/off control
User parameter h7 in combination with the remote on/off switch
(installed by the customer) allows the user to switch the unit on
without using the I key on the controller.
When user parameter h7 is set to 0 (=No), the unit can only be
switched on by means of the I key on the controller.
When user parameter h7 is set to 1 (=Yes), the unit can be
switched on by means of the remote on/off switch and the
I key on the controller.
Key on the controller
Remote On/off switch
ON
ON
OFF
OFF
To select local or remote on/off control, proceed as follows:
1
Enter the list of user parameters.
Parameter code :d appears on the display.
2
Select parameter code h7 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.
Locking the controller keyboard
Once user parameter h9 is set to 0, the following advanced features
can no longer be carried out by means of the controller:
modifying direct and user parameters (parameters can be
displayed but not modified),
resetting the timers.
When user parameter h9 is set to 1, the above-described advanced
features can be carried out using the controller.
To lock or unlock the controller keyboard, proceed as follows:
1
Enter the list of user parameters.
Parameter code :d appears on the display.
2
Select parameter code h9 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.
UNIT RESULT
ON
ON
OFF
OFF
ON
OFF
OFF
OFF
Operation manual
10
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