FRIEDHELM LOH Rittal 3273 Series Assembly And Operating Instructions Manual Download Page 3

Rittal enclosure cooling unit

3

1 Notes on documentation

EN

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 Di-
rective 2006/42/EC and EMC Directive 2014/30/EC. A 
corresponding declaration of conformity has been is-
sued. This can be found at the end of this document, or 
on the Rittal  homepage.

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 in-
structions

The following symbols are used in this documentation:

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 in paper and digital 
format are available for the unit types described here. 
We cannot accept any liability for damage associated 
with failure to observe these instructions. Where applica-
ble, the instructions for any accessories used also apply.

2

Safety notes

Please observe the following general safety notes when 
assembling and operating the unit:
– Assembly, installation and servicing may only be per-

formed by properly trained specialists.

– Do not obstruct the air inlet and air outlet of the cooling 

unit inside and outside the enclosure (see sec-
tion 4.2.2 "Layout of the electronic components in the 
enclosure").

– The heat loss of the components installed in the enclo-

sure must not exceed the specific useful cooling pow-
er of the cooling unit.

– The cooling unit must always be transported in a hori-

zontal position.

– Use only original spare parts and accessories.
– Do not make any changes to the cooling unit other 

than those described in these instructions or associat-
ed instructions.

– Risk of burns! On cooling units with automatic con-

densate evaporation, the surface of the thermal ele-
ment will get very hot during operation, and will remain 
so for some time afterwards.

– The mains connector of the cooling unit must only be 

connected and disconnected with the system de-en-
ergised. Connect the protective device specified on 
the rating plate.

3

Device description

Depending on the model chosen, your cooling unit may 
vary in appearance from the illustrations contained in 
these instructions. However, the functions are identical 
in principle.

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.

Summary of Contents for Rittal 3273 Series

Page 1: ...Enclosure cooling unit Assembly and operating instructions 3359 xxx 3273 xxx 3382 xxx 3383 xxx 3384 xxx 3385 xxx 3386 xxx 3387 xxx...

Page 2: ...oad 9 4 5 3 Three phase devices 9 4 5 4 Door limit switch 9 4 5 5 Notes on the flicker standard 9 4 5 6 Potential equalisation 9 4 6 Making the electrical connection 10 4 6 1 Bus connection only when...

Page 3: ...ed by properly trained specialists Do not obstruct the air inlet and air outlet of the cooling unit inside and outside the enclosure see sec tion 4 2 2 Layout of the electronic components in the enclo...

Page 4: ...cooling circuit Fig 2 Cooling circuit In the evaporator coil 1 the liquid refrigerant is convert ed to a gaseous state The energy needed for this pur pose is taken from the enclosure air in the form...

Page 5: ...nser is covered with a dirt repelling easy to clean RiNano coating In many appli cations therefore the use of filter media is unnecessary particularly with dry dusts For dry coarse dust and lint in th...

Page 6: ...at least 200 mm The cooling unit must be installed and operated in a horizontal position maximum deviation 2 The site must be free from excessive dirt aggressive ambient conditions and moisture The a...

Page 7: ...ng frame onto the cut out roof plate Note When using an air duct system care must be taken to ensure that it is laid straight and without kinks wherever possible This mini mises the resistance to the...

Page 8: ...lock refer also to Accessories in the Rittal Catalogue 4 4 Connecting the condensate discharge A condensate discharge hose 1 2 may be fitted to the cooling unit The condensate discharge must be laid w...

Page 9: ...specified value This will achieve the best short circuit protection for cables and equip ment Example Specified setting range 6 3 10 A set to 6 3 A 4 5 3 Three phase devices The electrical connection...

Page 10: ...or remotely setting parameters and monitor ing or for integration into the facility management sys tem Fig 12 Connection example Master slave operation Key 1 Serial interface Model No 3124 200 2 Seria...

Page 11: ...ver see fig 29 on page 22 marked with an arrow If you would like the system messages from the cool ing unit to be evaluated via the system message relay you should also connect a suitable low voltage...

Page 12: ...heavy lint contamination lint screens should be used available as an optional extra Pull the louvred air inlet grille off the enclosure Secure the filter mat in front of the condenser using the suppl...

Page 13: ...temper ature and all error messages in the 7 segment display Using an interface card Model No 3124 200 the unit may be incorporated into higher level remote monitor ing systems The cooling unit opera...

Page 14: ...y In order to be able to change a value you must enter the authorisation code 22 Keep the programming button C held down until 22 appears Press button 2 Set to confirm the code You can now alter the p...

Page 15: ...Switch between C F 0 1 0 The temperature display can be switched be tween C 0 and F 1 The LED displays the current unit of temperature 5 H1 Setting for switch ing difference hys teresis 2 K 10 K 5 K...

Page 16: ...6 Operation EN 16 Rittal enclosure cooling unit 6 1 6 Programming overview Fig 19 Programming overview 5 sec 5 sec...

Page 17: ...supply is interrupted the corresponding relay will drop out and open the contact The RiDiag II software available as an accessory Model No 3159 100 allows you to invert the system message relay circu...

Page 18: ...onnection examples see section 4 6 1 Bus connection only when interconnecting several units with a Comfort controller For details of how to set the identifier see section 6 1 5 Editable parameters or...

Page 19: ...ry A10 Evaporator fan Blocked or defective Clear the blockage replace if necessary A11 Compressor Compressor overloaded internal winding protection No action required Unit switches on again independen...

Page 20: ...perating hours Depending on the level of contamination in the ambient air the maintenance interval may be reduced to suit the air pol lution intensity Sequence of maintenance measures Check the level...

Page 21: ...enance EN Fig 22 Release the louvred grille Fig 23 Remove the louvred grille Fig 24 Disconnect the connector from the display Fig 25 Disconnect the earthing cable Fig 26 Remove the assembly screws fro...

Page 22: ...The closed cooling cycle contains refrigerant and oil which must be properly disposed of for the protection of the environment Facilities for disposal are available at the Rittal plant Please contact...

Page 23: ...0 62 0 42 0 48 0 55 0 62 0 42 0 58 0 77 0 79 0 52 0 47 0 77 0 79 0 52 0 47 0 77 0 79 0 52 0 47 1 00 1 09 0 71 0 81 1 00 1 09 0 71 0 81 1 00 1 09 0 71 0 81 Sensible cooling output Ps to DIN EN 14511 L...

Page 24: ...50 kW kW 1 10 1 20 0 85 0 87 1 10 1 20 0 85 0 87 1 50 1 65 1 15 1 30 1 50 1 65 1 15 1 30 1 50 1 65 1 15 1 30 2 00 2 14 1 41 1 51 2 00 2 14 1 41 1 51 2 00 2 14 1 41 1 51 Sensible cooling output Ps to...

Page 25: ...circuit breaker or gG slow fuse T Total cooling output Pc to L 35 L 35 DIN EN 14511 L 35 L 50 kW kW 3 00 3 30 2 20 2 50 3 80 4 00 3 05 3 30 Sensible cooling output Ps to DIN EN 14511 L 35 L 35 kW 2 7...

Page 26: ...s Fig 33 Spare parts for 3359 xxx 3382 xxx Fig 34 Spare parts for 3273 xxx 3383 xxx 3384 xxx 3385 xxx 101 102 100 71 45 55 25 5 10 10 95 95 70 70 40 75 30 80 15 20 1 90 3359 xxx 3382 xxx 101 15 95 25...

Page 27: ...le 55 Display 71 Temperature sensor 75 Cover 80 Transformer 90 Evaporator coil 100 Condenser 101 Condensate evaporator 102 Miniature fuse condensate evaporator T4A 6 3 x 32 mm 40 25 5 90 55 95 75 30 7...

Page 28: ...ions for assembly Fig 36 3359 xxx 3382 xxx assembly Fig 37 3273 xxx 3383 xxx 3384 xxx 3385 xxx assembly Fig 38 3386 xxx 3387 xxx assemblyf 375 415 326 170 597 415 365 80 30 475 260 326 375 597 475 415...

Page 29: ...X2 X3 K2 K1 B5 B4 B3 2 2 2 NTCCwhite NTCA yellow Level green 1 2 MS1 Serial 3 8 2 L N A1 Kx 13 12 11 10 14 3359 5xx 6xx 3382 5xx 6xx PE PE PE 22 21 3383 5xx 6xx 3384 5xx 6xx 3385 5xx 6xx Power F3 Kx...

Page 30: ...contact F11 F12 Miniature fuses condensate evaporator K1 Relay collective fault 1 K2 Relay collective fault 2 M1 Compressor M2 Condenser fan M3 Condenser fan optional 3383 xxx to 3387 xxx M4 Evaporat...

Page 31: ......

Page 32: ...an find the contact details of all Rittal companies throughout the world here www rittal com contact RITTAL GmbH Co KG Postfach 1662 D 35726 Herborn Phone 49 0 2772 505 0 Fax 49 0 2772 505 2319 E mail...

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