6 Operation
RITTAL cooling unit assembly and operating instructions 27
EN
In principle, the programming is identical for all
editable parameters.
To enter programming mode:
• Press button 2 (“Set”) for approx. 5 sec.
The controller is now in programming mode. While in
programming mode, if you do not press any buttons
for approx. 30 sec., the display will first flash, then
the controller will switch back to normal display
mode. The “Esc” display indicates that any made
changes have not been saved.
• Press the programming buttons
▲
(°C) or
▼
(°F)
to switch back and forth between the editable
parameters (see tables 4 and 5).
• Press button 2 (“Set”) to select the displayed
parameter for editing.
The current value of this parameter is displayed.
• Press one of the programming buttons
▲
(°C) or
▼
(°F).
The “Cod” display will appear. In order to be able to
change a value, you must enter the authorisation
code “22”.
• Keep the programming button
▲
(°C) held down
until “22” appears.
• Press button 2 (“Set”) to confirm the code.
You can now alter the parameter within the preset
limits.
• Press one of the programming buttons
▲
(°C) or
▼
(°F) until the required value appears.
• Press button 2 (“Set”) to confirm the change.
You can now alter other parameters in the same way.
There is no need to re-enter the authorisation code
“22”.
• To exit programming mode, press button 2 (“Set”)
again for approximately 5 sec.
“Acc” will appear in the display to indicate that the
changes have been saved. The display will then
switch back to regular operation (enclosure internal
temperature).
You can also program the Comfort controller
using a
diagnosis software package (Model No.
SK 3159.100),
the supply of which also includes
a connection cable to the PC. The cable connector
on the rear of the Comfort controller display serves
as an interface.
6.2.4 Editable parameters
See also Fig. 39 on page 28.
Tab. 4: Editable parameters
Progr.
level
Display
screen
Parameter Min.
value
Max.
value
Factory
setting
Description
1StInternal enclosure
temperature
setpoint T
i
20 55 35 The setting of the enclosure internal temperature
is preset at the factory to 35°C and may be altered
within a range of 20 – 55°C.
2FiFilter mat
monitoring
10 60 99
(= off)
To activate filter mat monitoring, set the display to
at least 10 K above the temperature differential
displayed in programming mode “Fi”. Filter mat
monitoring is preset to “deactivated” in the factory
(99 = off).
3AdMaster-slave
identifier
0190 See “6.2.7 Setting the master-slave identifier”,
page 30.
4CFTemperature
conversion
°C/°F
010 The temperature display can be switched from
°C (0) to °F (1). The corresponding LED displays
the current unit of temperature.
5H1Setting for
switching
difference
(hysteresis)
2105 The cooling unit is preset in the factory to a
switching hysteresis of 5 K. This parameter should
only be changed in consultation with us.
Please contact us for advice.
6H2Differential for
error message A2
3155 If the internal enclosure temperature exceeds the
set value by more than 5 K, then error message
A2 (enclosure internal temperature too high)
appears on the display terminal. If necessary,
the differential may be altered here within the
range of 3 – 15 K.
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