9 Inspection and maintenance
Rittal cooling unit assembly and operating instructions
page 10
of
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free. All that may be required from time to time is to
clean the components of the external air circuit using
a vacuum cleaner or compressed air if they become
visibly dirty. Any stubborn, oily stains may be re-
moved using a non-flammable detergent, such as
degreaser. Maintenance interval: 2,000 operating
hours. Depending on the level of contamination in the
ambient air, the maintenance interval may be re-
duced to suit the air pollution intensity.
Notice!
Caution!
Risk of fire!
Never use flammable liquids for
cleaning.
Sequence of maintenance measures:
–Check the level of dirt.
–Filter soiling? Replace the filter if necessary.
–Cooling membranes soiled? Clean if necessary.
–Activate test mode; cooling function OK?
–Check noise generation of compressor and fans.
Sequence of maintenance measures:
-Check the level of dirt.
-Filter soiling? Replace the filter if necessary.
-Cooling membranes soiled? Clean if necessary..
-Check noise generation of compressor and fans.
9.1
Compressed air cleaning
Figure 14: Break power
Figure 15: Twist off the screw on the top of the cover
Figure 16: Twist off the screw on the bottom of the cover
Figure 17: Open the cover
Figure 18: Disconnect the plug of the display
