7 Inspection and maintenance
Rittal air/water heat exchanger assembly instructions 23
EN
7 Inspection and maintenance
7.1 General
The air/water heat exchanger is largely maintenance
free. The water circuit is checked at the factory for
leaks and subjected to a function trial run.
The installed maintenance-free fan is mounted on ball
bearings, protected against moisture and dust, and
fitted with a temperature monitor. The life expectancy
is at least 30,000 operating hours. If dirt is present in
the cooling water, a filter must be fitted.
Maintenance interval: 2,000 operating hours.
Sequence of maintenance measures:
– Check the level of dirt.
– Activate test mode; cooling function OK?
– Check the noise generation of the fan.
Fig. 27: Disconnect the mains plug (X1)
(Comfort version shown in figure)
Fig. 28: Remove the fastening screws for the cover with fan
Fig. 29: Remove the cover with fan
Fig. 30: Disconnect the connector from the display
8 Emptying, storage and disposal
During storage, the air/water heat exchanger must
stand upright.
Disposal can be performed at the Rittal plant.
Please contact us for advice.
Emptying (for units with Basic controller only):
During storage and transportation below freezing
point, the air/water heat exchanger should be
drained completely in the water supply direction
using compressed air. This requires that the mag-
netic valve is opened.
For the e-Comfort controller, this is achieved by
simultaneously pressing the H2 (°C key) and H4
(/set key) keys for 5 seconds. The magnetic valve
is then opened for approximately 5 minutes.
Risk of electric shock!
The unit is live. Switch off the power
supply before opening, and take suitable
precautions against it being accidentally
switched on again.
Caution!
Risk of fire!
Never use flammable liquids for cleaning.
Caution! Risk of damage!
The air/water heat exchanger
must not be subjected to temperatures
above +70°C during storage.
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