Technical data

Rittal Modular Safe LMS 9.3 Operation and functionality
We reserve the right to make technical changes Version 2.2
Operator Manual Page 43
NOTICE
Note about the switching hysteresis:
At a low hysteresis and thus short switching cycles, there is a danger
that the cooling may be inadequate or only partial cooling occurring in
some sections of the cabinet.
NOTICE
Note about the set temperature:
The set temperature of the comfort controller has been set to 25 °C in
the factory. For energy-saving purposes, the set temperature should
not be set any lower than is absolutely necessary.
NOTICE
Note about the cooling capacity:
Interactive sets of characteristic curves to determine the useful cooling
capacity can be found at www.rittal.com.
In principle, programming is identical for all variable parameters. To enter programming mode:
• Press button 2 (“Set”) for approx. 5 seconds.
The controller is now in programming mode. While in programming mode, if you do not press any buttons for
approx. 30 seconds, the display will first flash, then the controller will switch back to normal display mode.
The display “Esc” indicates that any amendments made have not been saved.
• Press the programming buttons σ (°C) or τ (°F) to switch between the settable parameters (see Tables
on page 44 and 46).
• 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 σ (°C) or τ (°F).
The display “Cod” will appear. In order to be able to change a value, you must enter the authorisation code
“22”.
• Keep the programming button σ (°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 σ (°C) or τ (°F) until the required value appears.
• Press button 2 (“Set”) to confirm the amendment.
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”) for a further 5 seconds or so.
“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.