Inspection And Maintenance; General; Storage And Disposal - Rittal SK 3237.xxx Assemble And Operating Instructions

8 Inspection and maintenance

8 Inspection and
maintenance
Risk of electric shock!
The unit is live.
Switch off the power supply
before opening, and take
suitable precautions against
it being accidentally
switched back on.

8.1 General

The built-in, maintenance-free fan is moun-
ted on a friction bearing (SK 3237.xxx,
SK 3238.xxx and SK 3239.xxx) or ball
bearing (SK 3240.xxx, SK 3241.xxx,
SK 3243.xxx to SK 3245.xxx), and is pro-
tected against humidity and dust, and
equipped with a temperature monitor. The
life expectancy is at least 40,000 operat-
ing hours (L10, 40°C). The fan-and-filter
unit is thus largely maintenance free.
From time to time, the components may
need to be cleaned using a vacuum clean-
er or compressed air if they become visi-
bly dirty.
Any stubborn, oily stains may be removed
using a non-flammable detergent, such as
degreaser.
Maintenance interval: 2000 operating
hours. Depending on the level of contami-
nation in the ambient air, the maintenance
interval may be reduced to suit the air pol-
lution intensity.
Rittal fan-and-filter unit assembly and operating instructions
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.
– Fan membranes soiled?
Clean if necessary.
– Check the noise generation of the fan.
– Compressed air cleaning.

9 Storage and disposal

Caution!
Risk of damage!
The cooling unit must not be
stored at temperatures above
+70°C or below –30°C.
Disposal can be performed at the Rittal
plant.
Please contact us for advice.
EN
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