Rittal SK 3186930, SK 3187930, SK 3188940, SK 3189940 Assembly instructions
Enclosure cooling unit
SK 3186930
SK 3187930
SK 3188940
SK 3189940
Assembly and operating instructions
EN
Preface
Preface
Dear Customer!
Thank you for choosing a "Blue e+" enclosure cooling
unit (referred to hereafter as "cooling unit") from Rittal.
Yours
Rittal GmbH & Co. KG
Rittal GmbH & Co. KG
Auf dem Stützelberg
35745 Herborn
Germany
Phone: +49(0)2772 505-0
Fax: +49(0)2772 505-2319
E-mail: info@rittal.com
www.rittal.com
www.rittal.de
We are always happy to answer any technical questions
regarding our entire range of products.
2 Rittal enclosure cooling unit
Contents
Contents
1 Notes on documentation .................. 4
1.1 CE labelling................................................... 4
1.2 Storing the documents.................................. 4
1.3 Symbols used in these operating instructions 4
1.4 Other applicable documents ......................... 4
2 Safety notes ..................................... 5
2.1 General safety instructions ............................ 5
2.2 Operating and technical staff......................... 5
2.3 Other dangers when using the cooling unit ... 5
3 Product description .......................... 6
3.1 Functional description and components........ 6
3.1.1 Function ............................................................... 6
3.1.2 Components ........................................................ 7
3.1.3 Control ................................................................. 7
3.1.4 Safety devices ...................................................... 7
3.1.5 Condensation ....................................................... 7
3.1.6 Filter mats ............................................................ 7
3.1.7 Door limit switch ................................................... 8
3.2 Proper use, foreseeable misuse .................... 8
3.3 Supply includes............................................. 8
4 Transport and handling .................... 9
4.1 Delivery ......................................................... 9
4.2 Unpacking .................................................... 9
4.3 Transport ...................................................... 9
5 Installation ...................................... 10
5.1 Safety instructions....................................... 10
5.2 Siting location requirements ........................ 10
5.3 Assembly procedure ................................... 10
5.3.1 Assembly instructions ......................................... 10
5.3.2 Mounting options ............................................... 11
5.3.3 Make a mounting cut-out in the enclosure .......... 12
5.3.4 External mounting of the cooling unit .................. 12
5.3.5 Mounting the cooling unit externally on a 500 mm
deep enclosure ................................................... 14
5.3.6 Partial internal mounting of the cooling unit ......... 14
5.3.7 Full internal mounting of the cooling unit ............. 18
5.3.8 Connect the condensate water discharge .......... 19
5.4 Electrical connection ................................... 20
5.4.1 Notes on electrical installation ............................. 20
5.4.2 Install the power supply ...................................... 21
5.4.3 Connect the alarm relays .................................... 22
5.4.4 Interfaces ........................................................... 22
7.4 Configuration menu.................................... 26
7.4.1 Temperature ....................................................... 26
7.4.2 Alarm relays ....................................................... 27
7.4.3 Language settings .............................................. 27
7.4.4 Self-test .............................................................. 27
7.5 System messages...................................... 28
7.5.1 Occurrence of a malfunction ............................... 28
7.5.2 Display in case of errors ..................................... 28
7.6 List of system messages ............................ 29
8 Inspection and maintenance ........... 32
8.1 Safety instructions for maintenance work ... 32
8.2 Notes on the refrigerant circuit ................... 32
8.3 Maintenance work on the cooling unit ........ 32
8.4 Compressed air cleaning............................ 32
8.4.1 Dismantling a unit with full internal mounting ....... 32
8.4.2 Dismantling the unit ............................................ 32
8.4.3 Cleaning the components with compressed air .. 35
8.4.4 Re-assembling the cooling unit ........................... 35
9 Storage and disposal ...................... 36
10 Technical specifications .................. 37
11 List of spare parts ........................... 39
12 Drawings ........................................ 40
12.1 Representation of mounting cut-outs ......... 40
12.2 Dimensions and installation depths ............ 41
13 Accessories .................................... 43
14 Customer service addresses .......... 44
15 Compact service information .......... 48
EN
6 Commissioning .............................. 23
7 Operation ....................................... 24
7.1 General....................................................... 24
7.2 Layout of the display ................................... 24
7.2.1 Start screen ........................................................ 24
7.2.2 Changing a parameter value ............................... 24
7.3 Information menu ........................................ 25
7.3.1 Temperature information .................................... 25
7.3.2 Device information .............................................. 25
7.3.3 Efficiency information .......................................... 26
Rittal enclosure cooling unit 3
EN
1 Notes on documentation
1 Notes on documentation
1.1 CE labelling
Rittal GmbH & Co. KG confirms the conformity of the
cooling unit with the European Union's Machinery Directive 2006/42/EC and EMC Directive 2004/108/EC.
A corresponding declaration of conformity has been issued and enclosed with the unit.
1.2 Storing the documents
The assembly and operating instructions as well as all
other applicable documents are an integral part of the
product. They must be issued to everyone who works
with the unit and must always be available and on hand
for operating and maintenance personnel.
1.3 Symbols used in these operating instructions
The following symbols are used in this documentation:
Danger!
A dangerous situation in which failure to
comply with the instructions will result in
death or severe injury.
Warning!
A dangerous situation which may cause
death or serious injury if the instructions
are not followed.
Caution!
A dangerous situation which may lead to
(minor) injuries if the instructions are not
followed.
Note:
Important notices and indication of situations
which may result in material damage.
This symbol indicates an "action point" and shows that
you should perform an operation or procedure.
1.4 Other applicable documents
Assembly and operating instructions exist as paper documents and/or digital data carriers for the unit types described here and are enclosed with the equipment.
We cannot accept any liability for damage associated
with failure to observe these instructions. Where applicable, the instructions for any accessories used also apply.
4 Rittal enclosure cooling unit
2 Safety notes
2.1 General safety instructions
Please observe the following general safety instructions
for the installation and operation of the system:
– Please be sure to observe the applicable regulations
governing electrical installations of the country in
which the device is installed and operated as well as
national regulations for accident prevention. Please
also observe any internal company regulations, such
as work, operating and safety regulations.
– Use only original Rittal products or products recom-
mended by Rittal in conjunction with the cooling unit.
– Please do not make any changes to the cooling unit
that are not described in these operating instructions
or other applicable assembly and operating instructions.
– The operational safety of the cooling unit is only war-
ranted if used as intended. The technical specifications and limit values stated must not be exceeded under any circumstances. In particular, this applies to the
specified ambient temperature range and IP protection category.
– Operating the cooling unit in direct contact with water,
aggressive materials or inflammable gases and vapours is prohibited.
– Other than these general safety instructions, it is also
vital to observe the specific safety instructions when
carrying out the tasks described in the following chapters.
– Please note the maximum weights that may be lifted
by individuals. It may be necessary to use lifting gear.
2 Safety notes
Where applicable, use suitable components to divert
the air.
Please observe the prescribed minimum distances at
the installation site as outlined in section 5.3.1 "Assembly instructions".
EN
2.2 Operating and technical staff
– The assembly, installation, commissioning, mainte-
nance and repair of this cooling unit may only be performed by qualified, trained personnel.
– Only properly instructed personnel may operate a
cooling unit with the system operational.
– Children and persons with limited cognitive/coordina-
tive abilities must not operate, maintain or clean the
unit or be allowed to use it as a toy.
2.3 Other dangers when using the cooling unit
Particularly when the cooling unit is externally mounted
(see section 5 "Installation"), there is a risk that the enclosure could become unbalanced and tip over.
In such cases, the enclosure should be bolted to the
floor as a precaution.
If the air inlet or outlet of the cooling unit is obstructed,
there is a risk of air short-circuits, resulting in inadequate
climate control.
Please ensure that the electronic assemblies in the enclosure are installed in accordance with section 5.3.1
"Assembly instructions".
Rittal enclosure cooling unit 5
3 Product description
EN
3 Product description
3.1 Functional description and components
3.1.1 Function
There are two separate cooling circuits installed in the
cooling unit.
– One conventional refrigerant circuit (compression sys-
tem), and
– One heat pipe integrated into the condenser and
evaporator coil.
Refrigerant circuit with compression system
The refrigerant circuit with compression system is comprised of the following four main components:
1. Evaporator coil
2. Compressor
3. Condenser
4. Expansion valve
The evaporator coil fan draws hot air from the enclosure
in the internal circuit of the cooling unit and passes it
over the evaporator coil. After the evaporator coil, the
cooled air is fed back into the enclosure via the outlet
opening.
The air is cooled down by evaporating the refrigerant in
the evaporator coil. The refrigerant vapour is transported
by the compressor in the external circuit of the cooling
unit to the condenser. There, the refrigerant condenses
and becomes a liquid. The heat produced is dissipated
by the condenser fan. The downstream electronic expansion valve reduces the high pressure of the refrigerant, and the refrigerant is then fed back into the evaporator coil.
Both the compressor and the two fans in the cooling unit
are activated via an inverter. This makes it possible to
control these components, so that the fan and compressor may be activated for a longer time but at a lower output and improved efficiency.
Fig. 1: Cooling circuit
Key
1 Compressor
2 Condenser (dual version) with fan
3Expansion valve
4 Evaporator coil (dual version) with fan
5 Refrigerant circuit with heat pipe
6 Refrigerant circuit with compression system
7 Internal circuit
8 External circuit
9 Dryer/collector
10 Internal fan
11 External fan
12 PSA
H
pressure monitor
In both cooling circuits, the individual components are
connected with pipes in which the refrigerant R134a is
circulating. This refrigerant is very environmentally friendly, thanks to the following properties:
–Chlorine-free
– Does not deplete the ozone layer (ozone destruction
potential ODP = 0)
Refrigerant circuit with heat pipe
The additional second refrigerant circuit operates without a compressor, expansion valve or other control elements, and is integrated into the evaporator coil and
condenser as a heat pipe.
The refrigerant inside the heat pipe (R134a) absorbs
thermal energy from the intake of enclosure air and
evaporates. The gaseous refrigerant then rises through
the pipeline until it reaches the condenser. The refrigerant is cooled down again in the condenser (provided Tu
< Ti), and the heat released is emitted into the environment. Gravity then causes the liquid refrigerant to flow
back down the pipelines. The whole cycle begins again.
6 Rittal enclosure cooling unit
3 Product description
3.1.2 Components
Fig. 2: Main components of cooling unit
Key
1Cover
2 Chassis
3 Connection box
4Evaporator fan
5Handle
6 Air outlet opening
7 Lower louvred grille for air inlet
8Display
9 Infill panel
10 Upper louvred grille for air outlet
11 Thread for eyebolt
3.1.3 Control
Rittal enclosure cooling units are fitted with a controller
for setting the functions of the cooling unit.
Operation using this controller is described in section 7
"Operation".
3.1.4 Safety devices
– In the refrigerant circuit, the cooling units have a type-
tested pressure monitor (to EN 12263) which switches
off the cooling unit if the maximum admissible pressure is exceeded. Once the pressure drops back below the admissible pressure, the unit will automatically
resume operation.
– Temperature monitoring prevents the evaporator coil
from icing over. If there is a risk of icing, the compressor switches itself off and automatically switches itself
back on again at higher temperatures.
– The compressor is monitored and protected by the in-
verter to prevent overloading.
– The fans have a built-in overload protection with auto-
matic reset.
– In order to allow a reduction of pressure inside the
compressor and hence a safe restart, once it has been
switched off (e.g. upon reaching the set temperature
via the door limit switch function or via de-energising),
the device will switch back on with a delay of 180 seconds.
– The device has floating contacts on the connection
pins on terminals 1 and 3 of the signal connector (X2),
via which system messages from the device may be
polled, e.g. using a PLC (2 x normally closed or normally open contacts).
3.1.5 Condensation
At high levels of humidity and low temperatures inside
the enclosure, condensate water may form on the evaporator coil.
The cooling units have an automatic electrical condensate water evaporator. The thermal component used for
this purpose is based on self-regulating PTC technology. Condensate water arising on the evaporator coil is
collected in a tank in the external circuit of the cooling
unit, and partially evaporated via the airflow. When the
water level rises, the water enters the PTC thermal component and is evaporated (through-flow heater principle). The water vapour streams out of the cooling unit
with the airflow from the external fan.
The PTC thermal component is activated automatically
when the compressor is running, and continues to run
for around 15 minutes after the compressor has been
switched off. During the after-run phase, the condenser
fan will likewise continue to run at low speed.
In the event of a short-circuit in the PTC component or if
there is a risk of inverter overload (possible at high ambient temperatures), the PTC component will be deactivated. This means that any condensate water arising
can be discharged via the safety overflow.
If the fuse has tripped, any condensate water is drained
off via the safety overflow. The condensation is routed
downwards out of the unit via a drain pipe on the evaporator coil divider panel. For this purpose, a hose may be
connected to the condensate water nozzle (see section
5.3.8 "Connect the condensate water discharge").
3.1.6 Filter mats
The entire cooling unit condenser is covered with a dirtrepelling, easy-to-clean RiNano coating. In many applications, therefore, the use of filter media is unnecessary,
particularly with dry dusts.
For dry, coarse dust and lint in the ambient air, we recommend installing an additional PU foam filter mat (available 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 8 "Inspection and
maintenance").
For oily ambient air, we recommend the use of metal filters (also available as an accessory). These may be
cleaned with suitable detergents and reused.
EN
Rittal enclosure cooling unit 7
3 Product description
EN
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 1 and 2
closed). This prevents the formation of condensate water 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 (terminals 1 and 2)
3.2 Proper use, foreseeable misuse
The cooling unit is only intended for cooling connected
enclosures. Any other use is not permitted.
– The unit must not be installed and operated in loca-
tions 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 manufacturer's consent must be obtained in ad-
vance for mobile applications, e.g. on cranes.
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.
3.3 Supply includes
Qty. Description
1 Enclosure cooling unit
1 Shipping bag with
1 – Declaration of conformity
1 – Assembly and installation instructions
1 – Assembly, installation and operating in-
structions on digital data carrier
1 – Warning and safety notes
6 – Grub screws M8 x 40 mm
6 – Nut-and-washer assembly M8
1 – Sealing tape 10 x 10 mm, L = 4.1 m
1 – Signal connector X2
1–Connector X1
1 – Cover for connection unit
1 – Membrane entry grommet
1 – Clip
1 – Wedge element
6 – Fixing clamps
4 – Corner bracket for internal/external
mounting
2 – L-shaped brackets
Consequently, the cooling unit must only be used properly and in a technically sound condition! Any malfunctions which impair safety should be rectified immediately.
Proper use also includes the observance of the documentation 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 documentation provided. The same applies to failure to comply with
the valid documentation for any accessories used.
Inappropriate use may be dangerous. Examples of inappropriate 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.
1–Earth clamp 4 NS
1–Earth clamp 5 NS
1 – Washer for attaching the earth clamp
1 – Contact washer for attaching the earth
clamp
1 – M4 nut for attaching the earth clamp
1 – Cable gland M20 x 1.5 mm
1 – EMC cable gland M20 x 1.5 mm
1 – Strain relief
Tab. 1: Supply includes
8 Rittal enclosure cooling unit
4 Transport and handling
4.1 Delivery
The cooling unit is supplied in one packaging unit.
Check the packaging carefully for signs of damage.
Traces of oil on damaged packaging indicate a loss of
refrigerant and/or a leak in the cooling unit. Any packaging damage may be the cause of a subsequent
functional failure.
4.2 Unpacking
Remove the packaging materials from the cooling unit.
Note:
After unpacking, the packaging materials
must be disposed of in an environmentally
friendly way.
Check the cooling unit for any damage that may have
occurred during transport.
Note:
Damage and other faults, e.g. incomplete delivery, should be reported immediately, in
writing, to the shipping company and to Rittal
GmbH & Co. KG.
4 Transport and handling
Fig. 3: Thread and eyebolt on top of the chassis
Key
1Eyebolt
2 M12 thread
Before transporting by crane, please ensure that the
lifting gear and crane have sufficient load capacity to
transport the cooling unit safely.
Never allow anyone to stand beneath a suspended
load, even for a short time, during transportation by
crane.
Protect the lifting gear on the crane hook from load deflection, because the load's centre of gravity may be
off-centre.
First position the cooling unit close to the installation
site and protect from accidentally being knocked over.
EN
Check the supply contents for completeness (see section 3.3 "Supply includes").
4.3 Transport
Depending on the chosen version, the cooling unit may
weigh up to 85 kg. The components in the cooling unit
chassis account for the bulk of the weight.
Warning!
Please note the maximum weights that
may be lifted by individuals. It may be
necessary to use lifting gear.
At the rear of the cooling unit is a handle which can be
used to briefly lift the cooling unit when inserting into the
mounting cut-out.
There is also an M12 thread at the top of the chassis,
into which a Rittal eyebolt (e.g. belonging to an enclosure) may be screw-fastened. The cooling unit is readily
transported with the aid of lifting gear and an indoor
crane.
Note:
An eyebolt with M12 thread may be ordered
as an accessory from Rittal (see section 13
"Accessories").
Rittal enclosure cooling unit 9
5 Installation
EN
5 Installation
5.1 Safety instructions
Warning!
Please note the maximum weights that
may be lifted by individuals. It may be
necessary to use lifting gear.
Warning!
Work on electrical systems or equipment may only be carried out by an electrician or by trained personnel under the
guidance and supervision of an electrician. All work must be carried out in accordance with electrical engineering
regulations.
The cooling unit may only be connected
after the aforementioned personnel have
read this information!
Use only insulated tools.
Follow the connection regulations of the
appropriate electrical supply company.
The cooling unit must be connected to
the mains via an all-pin isolating device
to overvoltage category III (IEC 61058).
The cooling unit is not de-energised until
all of the voltage sources have been disconnected!
– The installation site must be free from excessive dirt,
aggressive ambient conditions and moisture.
– The ambient temperature must not exceed 60°C.
– It must be possible to fit a condensate water discharge
(see section 5.3.8 "Connect the condensate water
discharge").
– The mains connection data as stated on the rating
plate of the cooling unit must be guaranteed.
Size of installation room
– Units SK 3186930 and SK 3187930 must not be in-
stalled in rooms of less than 6 m³.
– Units SK 3188940 and SK 3189940 must not be in-
stalled in rooms of less than 12 m³.
Electromagnetic interference (EMI)
– Interfering electrical installations (high frequency) must
be avoided.
5.3 Assembly procedure
5.3.1 Assembly instructions
Before assembling, please ensure that the enclosure
is sealed on all sides (IP 54). Increased condensation
will occur later during operation if the enclosure is not
airtight.
If applicable, additionally fit a door limit switch (such as
4127.010) to the enclosure which switches off the
cooling unit when the enclosure door is opened to pre-
vent excessive condensation (see section 3.1.7 "Door
limit switch").
Please ensure that the electronic assemblies in the en-
closure allow the even circulation of air.
Please be sure to observe the applicable regulations
governing electrical installations of the country in
which the device is installed and operated, as well as
national regulations for accident prevention. Please
also observe any internal company regulations, such
as work, operating and safety regulations.
The technical specifications and limit values stated
must not be exceeded under any circumstances. In
particular, this applies to the specified ambient temperature range and IP protection category.
5.2 Siting location requirements
When choosing the installation site for the enclosure,
please observe the following:
– The site for the enclosure, and hence the positioning
of the cooling unit, must be carefully selected so as to
ensure good ventilation (clearance between cooling
units and clearance between a cooling unit and the
wall must be at least 200 mm in each case).
– The cooling unit must be installed and operated with a
maximum deviation of 2° from the vertical.
10 Rittal enclosure cooling unit
Fig. 4: Never direct the cold airflow at active components
Under no circumstances should the air inlet and outlet
openings of the cooling unit be obstructed. Only in this
way is it possible to ensure that the maximum cooling
output is available.
Please ensure that the cold airflow from the cooling
unit is not directed at active components.
Fig. 5: Never direct the cold airflow at active components
If appropriate, install components to divert the air.
When installing in a dismantled door or side panel,
please ensure that it cannot fall over when installing
the cooling unit in the mounting cut-out.
Note:
The pictures in this chapter illustrate the in-
stallation of the cooling unit in an enclosure
door. Installation in a side panel is carried out
in the same way.
5.3.2 Mounting options
In principle, there are three different options for installing
the cooling unit on an enclosure door or side panel.
5 Installation
EN
Fig. 6: Mounting options
Key
1 External mounting
2 Partial internal mounting
3 Full internal mounting
– External mounting: All of the cooling unit is outside the
enclosure.
– Partial internal mounting The cooling unit chassis is in-
side the enclosure, while the cover and the louvred
grilles are outside.
– Full internal mounting: All of the cooling unit is inside
the enclosure. Only the louvred grilles project on the
outside.
Note:
– Full installation of the 6 kW cooling unit is
not possible.
– On an enclosure with 500 mm depth, the
unit may only be externally mounted on the
side panel.
Your chosen installation option will ultimately depend on
how much space you require inside and outside of the
enclosure. The various mounting options have no influence on the cooling output of the cooling unit, which remains the same in all cases.
– If there are a large number of components installed in-
side the enclosure, external mounting or partial internal mounting of the cooling unit may be appropriate. In such cases, the space inside the enclosure may
be insufficient for full internal mounting, or it may not
be possible to guarantee adequate cooling of all components inside the enclosure.
– If the space surrounding the enclosure is limited,
full internal mounting may be suitable, so as to keep
essential escape routes clear.
Rittal enclosure cooling unit 11
EN
5 Installation
5.3.3 Make a mounting cut-out in the enclosure
In order to mount the cooling unit on the enclosure, a
suitable mounting cut-out must be made in the door or
side panel of the enclosure. In principle, the mounting
cut-out is identical for all three mounting options. A special mounting cut-out is only required for external mounting on the side panel of a 500 mm deep enclosure.
Note:
The dimensions of the mounting cut-outs
can be found in section 12.1 "Representation
of mounting cut-outs".
Using the diagrams in section 12.1 "Representation of
mounting cut-outs", calculate the required dimensions
for your mounting cut-out .
Drill all the required holes and make the mounting cutout.
Carefully deburr all drilled holes and the cut-out to prevent injuries caused by sharp edges.
Caution!
Drilled holes and cut-outs that have not
been fully deburred may cause cut injuries, particularly when assembling the
cooling unit.
5.3.4 External mounting of the cooling unit
Note:
The description in this section does not ap-
ply to external mounting of the cooling unit on
the side panel of a 500 mm deep enclosure.
This is described in section 5.3.5 "Mounting
the cooling unit externally on a 500 mm deep
enclosure".
Fig. 7: Threaded bolts at the rear of the cooling unit
Key
1 Rear of cooling unit
2 Lower threaded bolt
3 Joint of sealing tape
4Cover
Push the clip included with the supply into the relevant
hole at the top edge of the cooling unit at the rear.
This clip will prevent the cooling unit from falling out of
the mounting cut-out later on if it is not yet adequately
secured with the threaded bolt.
Cut the sealing tape in the dispatch bag to the required length so that it can be placed all the way round
the rear of the cooling unit once.
Start by positioning the sealing tape on the bottom
edge, so that the joint between the two ends of the
sealing tape is likewise on the lower edge of the unit.
Carefully stick the sealing tape as close to the edge as
possible on the rear of the cooling unit.
Screw the four threaded bolts into the blind nuts in the
corners at the rear of the cooling unit.
Fig. 8: Clip at the rear of the cooling unit
Key
1 Clip
2 Rear of cooling unit
12 Rittal enclosure cooling unit
Lift up the cooling unit, preferably from a lifting eye using suitable lifting gear, and initially set the cooling unit
down with the two bottom threaded bolts on the door
or side panel of the enclosure.
If transportation by crane is not possible, lift the cooling unit into the mounting cut-out in the same way using the handle.
Fig. 9: Threaded bolt in door cut-out
Key
1 Inside of enclosure door
2 Threaded bolts at bottom (2x)
3 Cooling unit on the outside of the enclosure door
5 Installation
Fig. 11: Corner brackets on the threaded bolts
Key
1Corner bracket
2 Threaded bolt
Next, attach the two corner brackets to the threaded
bolts at the bottom and secure with the corresponding
nuts.
EN
Slide the cooling unit into the mounting cut-out at the
top until the clip behind the cut-out latches home.
Fig. 10: Clip in mounting cut-out
Key
1 Inside of enclosure door
2 Clip
Attach the two corner brackets to the threaded bolts
at the top and secure with the corresponding nuts.
Fig. 12: Threaded bolts at rear
Key
1 Threaded bolts (4x)
2 Fastening clamps (6x)
3 Rear of cooling unit
4 Cooling unit in front of enclosure door
Insert the six fastening clamps into the rear of the cool-
ing unit.
Rittal enclosure cooling unit 13
5 Installation
EN
These fastening clamps ensure that the cooling unit is
directly in contact with the mounting cut-out of the enclosure door over the entire height.
If applicable, re-attach the door or side panel including
cooling unit to the enclosure, if not mounted directly
on the enclosure.
5.3.5 Mounting the cooling unit externally on a 500 mm deep enclosure
Note:
The description in this section applies to ex-
ternal mounting of the cooling unit on the
side panel of a 500 mm deep enclosure. External mounting on deeper enclosures is also
possible with this type of installation.
In principle, external mounting on the side panel is carried out in the same way as described in section 5.3.4
"External mounting of the cooling unit". However, please
note the following differences:
– Six threaded bolts are required for installation, rather
than four.
5.3.6 Partial internal mounting of the cooling unit
At the front of the cooling unit, pull the top louvred
grille away from the mounting clips on the cover, and
place or lay it down somewhere safe.
Fig. 13: Threaded bolts at rear
Key
1 Threaded bolts (6x)
2 Rear of cooling unit
Fig. 14: Remove the top louvred grille
Key
1Mounting clip
2Cover
3 Top louvred grille
4 Infill panel on cooling unit
Flip open the bottom louvred grille below the infill pan-
el.
Release the two stays in the hinge mechanism at the
top from the brackets attached to the cover of the
cooling unit.
– The unit with the threaded bolts is lowered into the rel-
evant holes, rather than on the mounting cut-out.
– No fastening clamps are fitted into the rear of the unit.
14 Rittal enclosure cooling unit
Fig. 15: Attachments on hinge mechanism
Key
1Cover
2 Stays in hinge mechanism
3 Bracket
4 Bottom louvred grille
5 Installation
Fig. 17: Remove the infill panel
Key
1 Mounting clips
2Cover
3 Infill panel
On the rear of the display, disconnect both of the con-
nectors (PE conductor and connection) and remove
the infill panel completely from the cooling unit.
EN
Pull the bottom louvred grille forwards out of its hold-
ers, and place or lay it down somewhere safe.
Fig. 16: Bottom holders of louvred grille
Key
1 Bottom louvred grille
2Holders
Gently pull the infill panel including display forwards to
release it from the mounting clips on the cover.
Fig. 18: Connection point on the rear of the cooling unit
Key
1 Connection point
Place the infill panel somewhere safe.
Carefully push the connector including connection cable inwards through the cable gland in the cover.
Fig. 19: Cable gland in the cover
Key
1Cover
2 Cable gland
Rittal enclosure cooling unit 15
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