EWWP045~06 ECB1~3MUW
Packaged water-cooled water chillers
4PW30041-1A
Operation manual
12
O
PERATION
32~72H
P
The 32~72Hp units are equipped with a built-in digital controller
offering a user-friendly way to set up, use and maintain the unit.
This part of the manual has a task-oriented, modular structure. Apart
from the first section, which gives a brief description of the controller
itself, each section or subsection deals with a specific task you can
perform with the unit.
Depending on the model there are two or three modules in the
system. The models 32~48Hp only have two modules, whereas the
models 52~72Hp consist of three modules. These modules are
generally named M1, M2 and M3 in the following descriptions. All
information about module 3 (
M3
) is not applicable for 32~48Hp
models.
Digital controller
User interface
The digital controller consists of an alphanumeric display, labelled
keys which you can press and a number of LEDs.
Figure - Digital controller
Working with the 32~72Hp units
This chapter deals with the everyday usage of the unit. Here, you will
find how to perform routine tasks, such as:
■
"Setting the language" on page 12
■
"Switching the unit on" on page 12
■
"Consulting actual operational information" on page 12
■
"Selecting cooling or heating operation" on page 13
■
"Adjusting the temperature setpoint" on page 13
■
"Resetting the unit" on page 13
Setting the language
If desired, the operating language can be changed to any of the
following languages: English, German, French, Spanish or Italian.
1
Enter the usersettings menu. Refer to chapter
2
Go to the appropriate screen of the usersettings menu using the
g
and
h
keys.
3
Select the appropriate field (
LANGUAGE
) using the
q
key.
4
Press the
g
and
h
keys to adjust the language setting.
5
Press
q
to confirm the adjusted language setting.
When the setting has been confirmed, the cursor switches to the next
setting.
Switching the unit on
1
Press the
J
key on the controller.
Depending on whether or not the remote ON/OFF switch is
configured (refer to the service manual), the following conditions
may occur.
When no remote ON/OFF switch is configured, the LED inside
the
J
key lights up and an initialization cycle is started. Once all
the timers have reached zero, the unit starts up.
When a remote ON/OFF switch is configured, the following table
applies:
2
When the unit is started up for the first time, or when the unit has
been out of operation for a longer period, it is recommended to
check the following.
Abnormal noise and vibrations
Make sure that the unit does not produce abnormal noises or
vibrations: check the fixation, stop valves and piping. If the
compressor makes abnormal noises, this may also be caused by
an overcharge of refrigerant.
3
If the water chiller does not start after a few minutes, refer to
.
Switching the unit off
If the remote on/off control parameter is set to NO:
Press the
o
key on the controller.
The LED inside the
o
key goes out.
If the remote on/off control parameter is set to YES:
Press the
o
key on the controller or switch the unit off using the
remote on/off switch.
The LED inside the
o
key goes out in the first case and starts
blinking in the second case.
Consulting actual operational information
1
Enter the readout menu through the main menu. (Refer to the
chapter
.)
The controller automatically shows the first screen of the
readout menu which provides the following information:
•
MANUAL MODE
or
INLSETP1/2
: manual/automatic control mode
operation. If the automatic control mode is selected, the
controller will indicate the active temperature setpoint.
Depending on the status of the remote contact, setpoint one
or setpoint two is active.
•
INL WATER E/C
: actual inlet water temperature.
•
THERMOSTAT STEP
: actual thermostat step. The maximum
number of thermostat steps are as listed:
f
key, to enter the main menu
o
key, to start up or to shut down the unit.
p
key, to enter the safeties menu or to reset an alarm.
g
h
keys, to scroll up or down through the screens of a menu
(only in case
W
,
X
or
C
appears) or to raise, respectively
lower a setting.
q
key, to confirm a selection or a setting.
NOTE
Temperature readout tolerance: ±1°C.
Legibility of the alphanumeric display may decrease in
direct sunlight.
Local key
Remote switch
Unit
o
LED
ON
ON
ON
ON
ON
OFF
OFF
Flashing
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
In case of emergency, switch off the unit by pushing the
emergency stopbutton.
NOTE
Also consult
"Defining the schedule timer" on page 17
32Hp
4
48Hp
4
64Hp
6
36Hp
4
52Hp
6
68Hp
6
40Hp
4
56Hp
6
72Hp
6
44Hp
4
60Hp
6
