Rittal enclosure cooling unit
9
3 Product description
EN
3.1.6
Filter mats
For dry, coarse dust and lint in the ambient air, we rec-
ommend installing an additional PU foam filter mat (avail-
able as an accessory) in the cooling unit. Depending on
the incidence of dust, you will need to replace the filter
mat from time to time (see section 7.5.2 "Configura-
tion").
For oily ambient air, we recommend the use of metal fil-
ters (also available as an accessory). These may be
cleaned with suitable detergents and reused.
3.1.7
Door limit switch
The cooling unit may be operated with a floating door
limit switch connected. The door limit switch is available
as accessory from Rittal.
The door limit switch function causes the fans and the
compressor in the cooling unit to gradually slow down
and then switch off after approximately 15 seconds
when the enclosure door is opened (contacts 5 and 6
closed). This prevents the formation of condensate wa-
ter inside the enclosure while the enclosure door is
open. In order to prevent damage to the unit, it is
equipped with an ON delay: The evaporator fan will cut
in again after a delay of a few seconds on closure of the
door.
Please note that no external voltage may be applied to
the door contacts (connection clamps 5 and 6).
3.2
Intended use, foreseeable misuse
The cooling unit is intended exclusively for cooling
closed control cabinets as well as for professional use in
accordance with DIN EN 61000-3-2. Any other use is
not permitted.
The cooling unit is intended for indoor and semi-outdoor
use as standard. Semi-outdoor use is defined as fol-
lows:
– Siting in a roofed outdoor area.
The cooling unit is protected from the direct impacts
of weather conditions such as precipitation or perma-
nent sunlight.
– Always use within the admissible temperature range.
– The device is secure from unauthorized public access.
The unit must not be installed and operated in locations
which are accessible to the general public (see DIN EN
60335-2-40, paragraph 3.119).
The unit is designed solely for stationary use.
The cooling unit must not be used in environments with
conductive, flammable and explosive dusts.
These include:
– Graphite dusts
– Metal dusts
– Cereal dusts
– Wood dusts
– Textile fibres and lint
The cooling unit is state of the art and built according to
recognised safety regulations. Nevertheless, improper
use can pose a threat to the life and limb of the user or
third parties, or result in possible damage to the system
and other property.
Consequently, the cooling unit must only be used prop-
erly and in a technically sound condition! Any malfunc-
tions which impair safety should be rectified immediate-
ly.
Proper use also includes the observance of the docu-
mentation provided, and compliance with the inspection
and maintenance conditions.
Rittal GmbH & Co. KG is not liable for any damage which
may result from failure to comply with the documenta-
tion provided. The same applies to failure to comply with
the valid documentation for any accessories used.
Inappropriate use may be dangerous. Examples of inap-
propriate use include:
– Use of the cooling unit over long periods with the en-
closure open.
– Use of impermissible tools.
– Improper operation.
– Improper rectification of malfunctions.
– Use of accessories not approved by Rittal GmbH &
Co. KG.
