Rittal SK 3302.series Assembly And Operating Instructions Manual - 5 Commissioning
5 Commissioning
Rittal cooling unit assembly instructions
21
GB
4.7 Finalising assembly
4.7.1 Installing the filter media
The entire condenser in the cooling units is finished
with a dirt-repelling, easy-to-clean RiNano coating.
In many cases, therefore, the use of filter media is
unnecessary, particularly in the case of dry dusts.
For dry, coarse dust and lint in the air, we recom-
mend installing an additional PU foam filter mat
(available as an accessory) in the cooling unit. For air
containing oil condensation, we recommend the use
of metal filters (also available as an accessory).
When used in textile plants with heavy lint contami-
nation, lint screens should be used (available as an
optional extra).
• Pull the louvred air inlet grille from the enclosure.
• Insert the filter mat into the louvred grille as shown
in Fig. 32 and push it back onto the enclosure.
Fig. 32: Installing the filter mat
4.7.2 Fitting the cooling unit
For partial and full internal mounting only.
• Connect the connector to the rear of the display.
• Place the louvred grille onto the unit at the front,
and press it down until you hear it snap into place.
Fig. 33: Attach the louvred grille and connect the display
4.7.3 Setting the filter mat monitor
(only with Comfort controller)
Function of the filter mat monitor:
Dirt on the filter mat is automatically determined by
measuring the temperature difference in the external
circuit of the cooling unit (see “6.2.5 Programming
overview”, page
27
). As the level of filter mat soiling
rises, the temperature difference will increase. The
nominal value of the temperature difference in the
external circuit adapts automatically to the relevant
operating points in the performance diagrams.
Hence there is no need to readjust the nominal value
for different operating points of the cooling unit.
5
Commissioning
• Once all the assembly and installation work is
complete, switch on the power supply to the
cooling unit.
The cooling unit will commence operation:
– With Basic controller: The green operating LED
(“line”) is illuminated.
– With Comfort controller: First the software version
of the controller will appear for approx. 2 sec., then
the enclosure internal temperature will appear in
the 7-segment display.
You can now make your individual settings on the
unit e.g. set the temperature or (with Comfort control-
ler only) assign the network identifier etc. (refer to the
chapter on “Operation”).
Caution! Risk of damage!
The oil must collect in the compressor in
order to ensure lubrication and cooling.
Do not operate the cooling unit for at
least 30 min. after assembling the
equipment.